44 results on '"Petropoulos, S. A."'
Search Results
2. Effect of soils with varying degree of weathering and pH values on phosphorus sorption
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Antoniadis, V., Koliniati, R., Efstratiou, E., Golia, E., and Petropoulos, S.
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- 2016
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3. O-234 The guinea pig embryo: a potential new model for human development
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Canizo, J, primary, Zhao, C, additional, Vandal, K, additional, Biondic, S, additional, and Petropoulos, S, additional
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- 2022
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4. Assessment of growth and yield components following the application of different biological fertilizers on soybean ('Glycine max' l.) Cultivation
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Zarei, I, Khah, EM, Mohammadi, G, and Petropoulos, S
- Published
- 2011
5. Placental drug transporters and their role in fetal protection
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Iqbal, M., Audette, M.C., Petropoulos, S., Gibb, W., and Matthews, S.G.
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- 2012
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6. Effect of glucocorticoids on regulation of placental multidrug resistance phosphoglycoprotein (P-gp) in the mouse
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Petropoulos, S., Gibb, W., and Matthews, S.G.
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- 2010
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7. 14-3-3ζ constrains insulin secretion by regulating mitochondrial function in pancreatic β-cells
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Mugabo, Y, primary, Zhao, C, additional, Tan, JJ, additional, Ghosh, A, additional, Campbell, SA, additional, Fadzeyeva, E, additional, Paré, F, additional, Pan, SS, additional, Galipeau, M, additional, Ast, J, additional, Broichhagen, J, additional, Hodson, DJ, additional, Mulvihill, EE, additional, Petropoulos, S, additional, and Lim, GE, additional
- Published
- 2021
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8. Antioxidant activity and chemical composition of Cichorium spinosum L. in relation to nitrogen rate
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Petropoulos, S., primary, Fernandes, Â., additional, Karkanis, A., additional, Ntasti, G., additional, Barros, L., additional, and Ferreira, I.C.F.R., additional
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- 2021
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9. Breast Cancer Resistance Protein (Bcrp1/Abcg2) in Mouse Placenta and Yolk Sac: Ontogeny and its Regulation by Progesterone
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Kalabis, G.M., Petropoulos, S., Gibb, W., and Matthews, S.G.
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- 2007
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10. Chemical composition and quality of various garlic (Allium sativum L.) genotypes cultivated in Greece
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Petropoulos, S., primary, Ntatsi, G., additional, Fernandes, Â., additional, Barros, L., additional, and Ferreira, I.C.F.R., additional
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- 2019
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11. Interference of weeds in vegetable crop cultivation, in the changing climate of Southern Europe with emphasis on drought and elevated temperatures: a review
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Karkanis, A., primary, Ntatsi, G., additional, Alemardan, A., additional, Petropoulos, S., additional, and Bilalis, D., additional
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- 2018
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12. Position- and Hippo signaling-dependent plasticity during lineage segregation in the early mouse embryo.
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Posfai, E, Petropoulos, S, de Barros, FRO, Schell, JP, Jurisica, I, Sandberg, R, Lanner, F, Rossant, J, Posfai, E, Petropoulos, S, de Barros, FRO, Schell, JP, Jurisica, I, Sandberg, R, Lanner, F, and Rossant, J
- Abstract
The segregation of the trophectoderm (TE) from the inner cell mass (ICM) in the mouse blastocyst is determined by position-dependent Hippo signaling. However, the window of responsiveness to Hippo signaling, the exact timing of lineage commitment and the overall relationship between cell commitment and global gene expression changes are still unclear. Single-cell RNA sequencing during lineage segregation revealed that the TE transcriptional profile stabilizes earlier than the ICM and prior to blastocyst formation. Using quantitative Cdx2-eGFP expression as a readout of Hippo signaling activity, we assessed the experimental potential of individual blastomeres based on their level of Cdx2-eGFP expression and correlated potential with gene expression dynamics. We find that TE specification and commitment coincide and occur at the time of transcriptional stabilization, whereas ICM cells still retain the ability to regenerate TE up to the early blastocyst stage. Plasticity of both lineages is coincident with their window of sensitivity to Hippo signaling.
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- 2017
13. Single-cell RNA sequencing: revealing human pre-implantation development, pluripotency and germline development
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Petropoulos, S., primary, Panula, S. P., additional, Schell, J. P., additional, and Lanner, F., additional
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- 2016
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14. Long-term storage of onion and the factors that affect its quality: A critical review
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Petropoulos, S. A., primary, Ntatsi, G., additional, and Ferreira, I. C. F. R., additional
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- 2016
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15. Wild Edible Species with Phytoremediation Properties
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Salonikioti, A., primary, Petropoulos, S., additional, Antoniadis, V., additional, Levizou, E., additional, and Alexopoulos, A., additional
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- 2015
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16. Finite elements analysis of cylindrical copper shelled SLA electrodes
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G. Petropoulos S. Maropoulos, John Kechagias, and Vassilis Iakovakis
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Rapid prototyping ,Steady state (electronics) ,Materials science ,chemistry ,Electrode ,Industrial research ,chemistry.chemical_element ,Mechanics ,Copper ,Finite element method ,Thermo mechanical ,Stress concentration - Published
- 2009
17. Long-term storage of onion and the factors that affect its quality: A critical review.
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Petropoulos, S. A., Ntatsi, G., and Ferreira, I. C. F. R.
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ONION storage , *POSTHARVEST diseases , *PLANT diseases , *VEGETABLE storage , *BIOCHEMISTRY - Abstract
Storage of onions is a multifaceted issue, which involves many preharvest and postharvest factors. One of the major factors that affect onion storage is the selection of the proper cultivar, since there are significant differences in storability between the cultivars and not all of them are suitable for storage. Proper preharvest and postharvest conditions are essential for storability of onion bulbs, whereas they also affect marketability (weight losses, texture and color depth of bulbs) and quality (chemical composition, nutritional value, antioxidant activity). Irrigation and fertilization are essential preharvest factors that substantially affect storability, whereas curing methods and storage conditions (temperature, relative humidity, controlled atmospheres) and processing treatments are postharvest factors. This review article examines the effect of long-term storage on the main quality features of onions, such as the incidence of sprouting and root growth, water losses, and changes in chemical composition (mineral composition, sugar content, nutritional value) and antioxidant activity (phenolic and flavonoid contents, DPPH [2,2-diphenyl-1-picrylhydrazyl] scavenging activity). [ABSTRACT FROM AUTHOR]
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- 2017
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18. Breast Cancer-Resistance Protein (BCRP1) in the Fetal Mouse Brain: Development and Glucocorticoid Regulation
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Petropoulos, S., primary, Gibb, W., additional, and Matthews, S. G., additional
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- 2010
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19. Fruit Volatiles, Quality, and Yield of Watermelon as Affected by Grafting.
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Petropoulos, S. A., Olympios, C., Ropokis, A., Vlachou, G., Ntatsi, G., Paraskevopoulos, A., and Passam, H. C.
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FRUIT yield , *WATERMELONS , *GRAFTING (Horticulture) , *FRUIT quality , *CUCURBITA , *CAROTENOIDS - Abstract
The aim of the present study was to examine the effect of grafting of watermelon hybrids 'Obla F1' and 'Vanessa F1' on to Cucurbita maxima × Cucurbita moschata rootstock TZ 148 and Lagenaria sp. rootstock 'Dias F1', on the volatiles and yield of fruit and the plant growth. Fruit volatiles analysis showed the presence of two aldehydes, namely (E)-2-nonenal and (E,Z)-2,6-nonadien-1-al, with (E)-2-nonenal being present at higher concentrations in grafted than in un-grafted plants. Grafted plants had also higher growth rate, total yield, and fruit number than un-grafted plants, whereas the percent dry matter of leaves and shoots was higher in ungrafted plants. No differences were observed for mean fruit weight, fruit shape, and rind thickness. Fruit from grafted plants had more compact flesh and less acid fruit juice than fruit from ungrafted plants. Fruit volatile components differed between ungrafted and grafted plants. With regards to sugar content, no significant differences between grafted and ungrafted plants were observed, except in the case of 'Obla F1 ' hybrids. Sodium concentration of plant tissues and fruit was higher in 'Obla F1 ' ungrafted plants, as well as carotenoid, lycopene, and vitamin C content in fruit, but only in the second year. In conclusion, rootstock-scion combination implemented in the present study affected plant growth and fruit yield and quality, rendering the choice of rootstocks and scions of major importance in order to achieve the highest yield and quality of watermelon fruit. [ABSTRACT FROM AUTHOR]
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- 2014
20. Evaluation of rootstocks for watermelon grafting with reference to plant development, yield and fruit quality.
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Petropoulos, S. A., Khah, E. M., and Passam, H. C.
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WATERMELONS , *ROOTSTOCKS , *PLANT growth , *PLANT development , *SUGAR content of fruit , *FRUIT quality , *GRAFTING (Horticulture) - Abstract
The effect of grafting and post-grafting temperature on the plant development of two watermelon cultivars at transplantation and on subsequent fruit quality was studied. Watermelon cv. Sugar Baby and Crimson Sweet were self-rooted or grafted onto rootstock RS 841 F1 (Cucurbita maxima × C. moschata) or bottlegourd [Lagenaria siceraria f. clavata] (year 1), plus L. siceraria f. pyrotheca (year 2). After grafting, plants were held at 8 °C or 16 °C (minimum) until transplantation (28-29 days), at which stage growth was compared with that of the self-rooted control held under the same conditions. Plants were planted in the field and fruit quality assessed at harvest. At the time of transplantation in year 1, plants at 16 °C were taller and had a higher total fresh weight than those at 8 °C. The grafted plants of both cultivars were taller and had a higher leaf area and fresh weight than the self-rooted plants, irrespective of rootstock. In year 2, the grafted plants of both cultivars had better development (height, leaf area, leaf number, fresh weight) than self-rooted plants. The plants of Crimson Sweet × L. siceraria f. pyrotheca were taller than those of the other two scion-rootstock combinations, irrespective of temperature. Mean fruit weight at harvest was higher in grafted plants than in self-rooted plants, and sugar content varied with scion-rootstock combination. Grafting of watermelon results in better plant growth by the time of transplantation, whereas the scion-rootstock combination affects fruit quality. A minimum temperature of 16 °C is indicated during the post-grafting stage. [ABSTRACT FROM AUTHOR]
- Published
- 2012
21. Evaluation of Growth Media Incorporating Cotton Ginning By-products for Vegetable Production.
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Khah, E. M., Petropoulos, S. A., Karapanos, I. C., and Passam, H. C.
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COTTON gins & ginning , *SOIL amendments , *ORGANIC fertilizers , *VEGETABLES , *WASTE recycling - Abstract
The suitability of by-products from the cotton ginning industry for incorporation into growth media for three vegetable crops was examined. Composts were prepared by mixing the by-product with soil in 5 ratios (20:80, 40:60, 60:40, 80:20, 100:0, v/v compost and soil). Seeds of lettuce (Lactuca sativa L.), radish (Raphanus sativus L.) and spinach (Spinacia oleraceae L.) were sown directly within the composts and in 100% peat (control) in October (autumn crop) and December (winter crop). Plant growth (height, leaf number, dry and fresh weight, chlorophyll content) was recorded 19 and 17 days after transplantation (first and second sowing respectively) and at harvest. Fresh and dry weight was recorded at harvest. Overall, plant height and leaf number were higher when the growth media consisted principally of compost (higher ratios of cotton by-product: soil) than in the control (peat), whereas among the various ratios of compost: soil significant differences were recorded, media with a high compost content showing better growth in most cases. Similar results were reported for fresh and dry weight and chlorophyll content, except for dry weight in the second sowing, where growth media with a lower compost content had a higher dry weight. In conclusion, the incorporation of the cotton ginning by-product into compost resulted in better growth of lettuce, spinach and radish, suggesting that the use of this material may be of economical value as a spin-off product for the cotton ginning plant and also as a means of reducing present pollution of the environment due to the accumulation of waste material. [ABSTRACT FROM AUTHOR]
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- 2012
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22. Diurnal variation in the nitrate content of parsley foliage.
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Petropoulos, S . A., Constantopoulou, E., Karapanos, I., Akoumianakis, C. A., and Passam, H. C.
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FOLIAGE plants , *PARSLEY , *EFFECT of nitrates on plants , *PLANT species , *CULTIVARS , *HARVESTING - Abstract
The diurnal fluctuation of nitrate concentration in the foliage of three parsley subspecies (plainleafed, curly-leafed and turnip rooted parsley) cultivated in the spring and autumn of two consecutive years was examined. Nitrogen was applied at 30 (Control), 75, I 50, 300 mg kg-1 in both years, but with the addition of 450 mg kg-1 in year 2. Harvest was carried out at 08:30, 1 2 :30 and 1 7:30 on a single day for each sowing. The results showed that the nitrate concentration of the foliage was lowest when harvest was carried out at midday ( 1 2 :30), although not always to a statistically significant level in the low N-application rates (?? 75 mg kg-1). In addition, increasing the rate of N application from 30 to 450 mg kg-1 resulted in a progressive increase in the nitrate concentration of the foliage irrespective of the time of day at which the plants were harvested. The concentration of nitrate differed between subspecies and was higher in the older, outer leaves in the case of turnip-rooted parsley than in the younger, inner leaves. It is concluded that although the nitrate concentration of the foliage of all three parsley subspecies increased with increasing rates of N-application, even the implement of the highest nitrogen rate (< 400 mg kg-1 fresh weight), did not resulted in nitrate content that exceeded the maximum level recommended by the E.U., irrespective of the time of harvest, subspecies, age of the leaves and the season of cultivation. [ABSTRACT FROM AUTHOR]
- Published
- 2011
23. OR31-03 Single-Cell Profiling of Adult Human Ovarian Cortex Reveals Six Main Cell Types but No Germline Stem Cells
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Wagner M, Yoshihara M, Douagi I, Damdimopoulos A, Panula S, Petropoulos S, Lu H, Pettersson K, Palm K, Katayama S, Hovatta O, Juha Kere, Lanner F, and Damdimopoulou P
24. Single-Cell RNA-Seq Reveals Lineage and X Chromosome Dynamics in Human Preimplantation Embryos
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Petropoulos S, Edsgärd D, Reinius B, Deng Q, Sp, Panula, Codeluppi S, Plaza Reyes A, Linnarsson S, Sandberg R, and Fredrik Lanner
25. Fruit volatiles, quality, and yield of watermelon as affected by grafting
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Petropoulos, S. A., Olympios, C., Ropokis, A., Vlachou, G., Georgia Ntatsi, Paraskevopoulos, A., and Passam, H. C.
26. Comprehensive Cell Surface Protein Profiling Identifies Specific Markers of Human Naive and Primed Pluripotent States
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Collier, AJ, Panula, SP, Schell, JP, Chovanec, P, Plaza Reyes, A, Petropoulos, S, Corcoran, AE, Walker, R, Douagi, I, Lanner, F, and Rugg-Gunn, PJ
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cell surface markers ,blastocyst ,reprogramming ,antibody library ,differentiation ,embryonic stem cells ,pluripotency ,3. Good health - Abstract
Human pluripotent stem cells (PSCs) exist in naive and primed states and provide important models to investigate the earliest stages of human development. Naive cells can be obtained through primed-to-naive resetting, but there are no reliable methods to prospectively isolate unmodified naive cells during this process. Here we report comprehensive profiling of cell surface proteins by flow cytometry in naive and primed human PSCs. Several naive-specific, but not primed-specific, proteins were also expressed by pluripotent cells in the human preimplantation embryo. The upregulation of naive-specific cell surface proteins during primed-to-naive resetting enabled the isolation and characterization of live naive cells and intermediate cell populations. This analysis revealed distinct transcriptional and X chromosome inactivation changes associated with the early and late stages of naive cell formation. Thus, identification of state-specific proteins provides a robust set of molecular markers to define the human PSC state and allows new insights into the molecular events leading to naive cell resetting.
27. Domestication of Wild Edible Species: The Response of Scolymus hispanicus Plants to Different Fertigation Regimes
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Beatriz H. Paschoalinotto, Nikolaos Polyzos, Maria Compocholi, Youssef Rouphael, Alexios Alexopoulos, Maria Inês Dias, Lillian Barros, Spyridon A. Petropoulos, Paschoalinotto, B. H., Polyzos, N., Compocholi, M., Rouphael, Y., Alexopoulos, A., Dias, M. I., Barros, L., and Petropoulos, S. A.
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nutritional value ,organic acid ,common golden thistle ,wild edible greens ,mineral profile ,chemical composition ,Mediterranean diet ,Spanish oyster thistle ,organic acids ,tocopherols ,Plant Science ,Horticulture ,tocopherol - Abstract
Scolymus hispanicus L. is a wild edible species with wide distribution in the Mediterranean area. Recent research has focused on the domestication of wild edible greens, which is essential for the preservation of agroecosystems and the increase in biodiversity, especially under the adversely changing climate conditions. In the present work, the aim was to evaluate the response of S. hispanicus plants to different fertilization regimes that varied in the amounts of nitrogen, phosphorus and potassium in regard to plant growth and chemical composition of leaves. For this purpose, plants were grown in pots within an unheated greenhouse. Seven experimental treatments were used, including six fertigation regimes (SH1-SH6) and the control treatment (SHC), where no fertilizers were added. Fresh yield was beneficially affected by the treatments that included a high content of P and K (e.g., SH3 and SH5), while lesser amounts of these macronutrients (e.g., SH1 and SH4) resulted in higher chlorophyll content (SPAD index) and leaf area. In terms of mineral profile, high amounts of P and K improved dietary fiber and carbohydrates content, whereas the untreated plants had the highest content of ash, fat and crude protein. Oxalic and quinic acid were the major organic acids detected, with fertigation regimes significantly reducing their content compared to the control treatment. α-tocopherol was the only isoform of vitamin E detected in all the samples, while glucose and fructose were the most abundant sugars, with their highest content detected in control and SH4 treatments, respectively. Scolymus hispanicus leaves were rich in macro and micro minerals, while their contents varied depending on the fertigation regime. Finally, α-linolenic, palmitic, and linoleic acid were the major fatty acids detected, while their contents were beneficially affected by low nutrient inputs (e.g., untreated plants and SH1 and SH2 treatments). In conclusion, the regulation of nutrient solution seems to be an effective practice to increase fresh yield in S. hispanicus without compromising the nutritional profile of the edible product, while low inputs of macronutrients such as P and K may improve the chemical composition of the species, especially in terms of n-fatty acids.
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- 2023
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28. Bioactive Compounds, Antioxidant Activity, and Mineral Content of Wild Rocket (Diplotaxis tenuifolia L.) Leaves as Affected by Saline Stress and Biostimulant Application
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Ida Di Mola, Spyridon A. Petropoulos, Lucia Ottaiano, Eugenio Cozzolino, Christophe El-Nakhel, Youssef Rouphael, Mauro Mori, Di Mola, I., Petropoulos, S. A., Ottaiano, L., Cozzolino, E., El Nakhel, C., Rouphael, Y., and Mori, M.
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chlorophylls ,Fluid Flow and Transfer Processes ,total phenols ,Process Chemistry and Technology ,carotenoids ,General Engineering ,antioxidant activity ,carotenoid ,Computer Science Applications ,tropical plants extracts ,protein hydrolysates ,General Materials Science ,chlorophyll ,Instrumentation ,total phenol ,protein hydrolysate - Abstract
Featured Application: The results of the present work provide useful insights into the response of Diplotaxis tenuifolia L. plants to salinity stress and biostimulant application under successive crop cycles. Considering the complex effects of biostimulants on vegetable crops, providing new information regarding the positive effects of this agronomic practice under salinity stress and variable growing conditions will be useful for farmers and crop production stakeholders in their efforts to address the increasing soil salinization and degradation of the quality of irrigation water. The availability of irrigation water of good quality is decreasing due to soil salinization and the deterioration of aquifers. Moreover, ongoing climate change severely affects crop production and necessitates the intensification of cropping systems in order to ensure food security at a global scale. For this purpose, the aim of the present study was to evaluate the mitigating effects of two natural biostimulants on Diplotaxis tenuifolia L. plants cultivated at different salinity levels (EC of 0 dS m−1, 2 dS m−1, 4 dS m−1, and 6 dS m−1) and harvested at six consecutive cropping cycles. The tested factors showed a varied combinatorial effect on the tested parameters. These findings indicate the importance of considering growing conditions and cropping periods when applying biostimulants in D. tenuifolia plants under salinity stress. Antioxidant activity and bioactive compounds, such as total phenols, carotenoids, and total ascorbic acid, were variably affected by salinity, biostimulant application, and harvesting time, while mineral profile was also affected by the tested factors depending on the combination of factors. Finally, nitrate content showed decreasing trends with increasing salinity, while biostimulant application resulted in the higher accumulation of nitrates compared to the untreated plants. Although biostimulant application seems to alleviate the negative effects of salinity stress, the effect of growing conditions, as indicated by successive crop cycles, is also important for the response of D. tenuifolia plants to saline conditions and biostimulant application.
- Published
- 2023
29. Effect of Biostimulant Application on Plant Growth, Chlorophylls and Hydrophilic Antioxidant Activity of Spinach (Spinacia oleracea L.) Grown under Saline Stress
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Christophe El-Nakhel, Eugenio Cozzolino, Lucia Ottaiano, Spyridon A. Petropoulos, Sabrina Nocerino, Maria Eleonora Pelosi, Youssef Rouphael, Mauro Mori, Ida Di Mola, El Nakhel, C., Cozzolino, E., Ottaiano, L., Petropoulos, S. A., Nocerino, S., Pelosi, M. E., Rouphael, Y., Mori, M., and Di Mola, I.
- Subjects
leafy vegetable ,nitrate ,quality ,foliar application ,legume-derived protein hydrolysate ,Plant Science ,Horticulture ,abiotic stre ,salt stress ,abiotic stress ,leafy vegetables ,nitrates - Abstract
Irrigated agricultural lands are prone to salinity problems which may imperil horticultural crops by reducing growth, yield and even qualitative traits. Eco-friendly approaches such as biostimulant application and in particular protein hydrolysates from vegetal origin are implemented to mitigate salinity stress effects on crops. For this reason, a greenhouse experiment on spinach irrigated with increasing concentrations of saline water (EC = 3 dS m−1 (EC3), 6 dS m−1 (EC6) and 9 dS m−1 (EC9), in addition to non-saline treatment (EC0)) was organized, while plants were subjected to foliar applications of a protein hydrolysate from vegetal origin on a weekly basis. The application of this biostimulant helped mitigate the adverse effects of saline stress, by increasing the SPAD index and total chlorophylls of spinach plants. Yield was significantly boosted under biostimulant treatment in saline conditions and reached the value obtained in control treatment (no biostimulants added) × EC0 in the case of EC 3 and 6 dS m−1. In addition, the number of leaves and plants m−1 was increased under biostimulant treatment, and most importantly the hydrophilic antioxidant activity of spinach, thus a qualitative aspect of great importance was also increased. Such results increase the knowledge on the effects of protein hydrolysates application on an important leafy vegetable and may help growers mitigate saline conditions and maintain high crop yield and high quality of the final product when no other source of irrigation water is available.
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- 2022
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30. Nutritive and Phytochemical Composition of Aromatic Microgreen Herbs and Spices Belonging to the Apiaceae Family
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Maria Giordano, Spyridon A. Petropoulos, Marios C. Kyriacou, Giulia Graziani, Armando Zarrelli, Youssef Rouphael, Christophe El-Nakhel, Giordano, M., Petropoulos, S. A., Kyriacou, M. C., Graziani, G., Zarrelli, A., Rouphael, Y., and El Nakhel, C.
- Subjects
functional food ,phenolic compound ,controlled environment ,Ecology ,ICP-OES ,antioxidant activity ,UHPLC-Q-Orbitrap HRMS ,quinic acid ,Plant Science ,young leafy greens ,phenolic compounds ,Ecology, Evolution, Behavior and Systematics - Abstract
Microgreens represent a new generation of food products, commonly used to garnish and embellish culinary dishes, and recently associated with an increasing interest in their nutraceutical and phytochemical profiles. Four Apiaceae species: Pimpinella anisum L. (anise), Anthriscus cerefolium L. (chervil), Carum carvi L. (caraway), and Anethum graveolens L. (dill) were assessed for fresh yield, macro- and microminerals, total chlorophylls, total ascorbic acid, carotenoids, polyphenols, and their antioxidant activity. Anise was the species yielding the most (2.53 kg m−2) and having the highest lutein content (18.4 µg g−1 dry weight (DW)). Chervil and dill were characterized by the highest total ascorbic acid content (~151 mg AA g−1 fresh weight (FW)). The phenolic profile highlighted the presence of five flavonoid derivatives and 12 phenolic acid derivatives, with quinic acid derivatives being the most abundant phenols in the species tested. In addition, anise, caraway, and dill proved to be considerably rich in total polyphenols (~11056 μg g−1 DW). Caraway and dill were characterized by the highest antioxidant activity measured by the DPPH and ABTS methods, whereas the FRAP method revealed caraway as having the highest antioxidant activity. Such results highlight the potential of Apiaceae species as an alternative to other families which are commonly used for microgreens production.
- Published
- 2022
31. Bioactive Compounds and Antioxidant Activity of Lettuce Grown in Different Mixtures of Monogastric-Based Manure With Lunar and Martian Soils
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Luigi G. Duri, Antonio Pannico, Spyridon A. Petropoulos, Antonio G. Caporale, Paola Adamo, Giulia Graziani, Alberto Ritieni, Stefania De Pascale, Youssef Rouphael, Duri, L. G., Pannico, A., Petropoulos, S. A., Caporale, A. G., Adamo, P., Graziani, G., Ritieni, A., De Pascale, S., and Rouphael, Y.
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phenolic compound ,Nutrition and Dietetics ,Endocrinology, Diabetes and Metabolism ,antioxidant activity ,space farming ,Orbitrap LC-MS/MS ,in situ resource utilization (ISRU) ,mars and lunar simulant ,organic amendment ,carotenoid ,Food Science - Abstract
The supplementation of bioactive compounds in astronaut’s diets is undeniable, especially in the extreme and inhospitable habitat of future space settlements. This study aims to enhance the Martian and Lunar regolith fertility (testing two commercial simulants) through the provision of organic matter (manure) as established by in situ resource utilization (ISRU) approach. In this perspective, we obtained 8 different substrates after mixing Mojave Mars Simulant (MMS-1) or Lunar Highlands Simulant (LHS-1), with four different rates of manure (0, 10, 30, and 50%, w/w) from monogastric animals. Then, we assessed how these substrates can modulate fresh yield, organic acid, carotenoid content, antioxidant activity, and phenolic profile of lettuce plants (Lactuca sativa L.). Regarding fresh biomass production, MMS-1-amended substrates recorded higher yields than LHS-1-ones; plants grown on a 70:30 MMS-1/manure mixture produced the highest foliar biomass. Moreover, we found an increase in lutein and β-carotene content by + 181 and + 263%, respectively, when applying the highest percentage of manure (50%) compared with pure simulants or less-amended mixtures. The 50:50 MMS-1/manure treatment also contained the highest amounts of individual and total organic acids, especially malate content. The highest antioxidant activity for the ABTS assay was recorded when no manure was added. The highest content of total hydroxycinnamic acids was observed when no manure was added, whereas ferulic acid content (most abundant compound) was the highest in 70:30 simulant/manure treatment, as well as in pure LHS-1 simulant. The flavonoid content was the highest in pure-simulant treatment (for most of the compounds), resulting in the highest total flavonoid and total phenol content. Our findings indicate that the addition of manure at specific rates (30%) may increase the biomass production of lettuce plants cultivated in MMS-1 simulant, while the phytochemical composition is variably affected by manure addition, depending on the stimulant. Therefore, the agronomic practice of manure amendment showed promising results; however, it must be tested with other species or in combination with other factors, such as fertilization rates and biostimulants application, to verify its applicability in space colonies for food production purposes.
- Published
- 2022
32. Antimicrobial Properties, Cytotoxic Effects, and Fatty Acids Composition of Vegetable Oils from Purslane, Linseed, Luffa, and Pumpkin Seeds
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Jovana Petrović, Youssef Rouphael, Lillian Barros, Marina Soković, Isabel C.F.R. Ferreira, Spyridon A. Petropoulos, Ângela Fernandes, Ricardo C. Calhelha, Petropoulos, S. A., Fernandes, A., Calhelha, R. C., Rouphael, Y., Petrovic, J., Sokovic, M., Ferreira, I. C. F. R., and Barros, L.
- Subjects
Omega-6 fatty acid ,Technology ,Portulaca oleracea L ,Cytotoxicity ,Linum usitatissimum L ,Omega-3 fatty acid ,Seed oils ,01 natural sciences ,Antibacterial properties ,chemistry.chemical_compound ,Linseed oil ,General Materials Science ,Food science ,Antitumor activitie ,Biology (General) ,Instrumentation ,Fluid Flow and Transfer Processes ,omega-3 fatty acids ,Physics ,General Engineering ,Luffa aegyptica Mill ,04 agricultural and veterinary sciences ,Antibacterial propertie ,Antimicrobial ,Engineering (General). Civil engineering (General) ,040401 food science ,Computer Science Applications ,omega-6 fatty acids ,Chemistry ,cytotoxicity ,Composition (visual arts) ,Stearic acid ,TA1-2040 ,Antifungal properties ,seed oils ,food.ingredient ,QH301-705.5 ,Linoleic acid ,QC1-999 ,Antitumor activities ,0404 agricultural biotechnology ,food ,Omega-3 fatty acids ,Penicillium verrucosum ,Omega-6 fatty acids ,antibacterial properties ,QD1-999 ,Antifungal propertie ,Pumpkin seed ,010405 organic chemistry ,Process Chemistry and Technology ,Cucurbita maxima L ,food.food ,0104 chemical sciences ,chemistry ,antifungal properties ,Aspergillus versicolor - Abstract
In the present study, the antimicrobial and cytotoxic activities, as well as the fatty acids composition in vegetable seed oils from linseed, purslane, luffa, and pumpkin were evaluated. For this purpose, two linseed oils and one luffa oil were commercially obtained, while purslane and pumpkin oils were obtained from own cultivated seeds. The results showed a variable fatty acids composition among the tested oils, with α-linolenic, linoleic, oleic, palmitic, and stearic acid being the most abundant compounds. In regards to particular oils, linseed oils were a rich source of α-linolenic acid, luffa and pumpkin oil were abundant in linoleic acid, while purslane oil presented a balanced composition with an almost similar amount of both fatty acids. Luffa oil was the most effective against two of the tested cancer cell lines, namely HeLa (cervical carcinoma) and NCI-H460 (non-small cell lung cancer), while it also showed moderate toxicity against non-tumor cells (PLP2 cell line). Regarding the antibacterial activity, linseed oil 3 and pumpkin oil showed the highest activity against most of the tested bacteria (especially against Enterobacter cloacae and Escherichia coli) with MIC and MBC values similar to the used positive controls (E211 and E224). All the tested oils showed significant antifungal activities, especially luffa and pumpkin oil, and for most of the tested fungi they were more effective than the positive controls, as for example in the case of Aspergillus versicolor, A. niger, and Penicillium verrucosum var. cyclopium. In conclusion, the results of our study showed promising antimicrobial and cytotoxic properties for the studied seed oils which could be partly attributed to their fatty acids composition, especially the long-chain ones with 12–18 carbons. This work was funded by the General Secretariat for Research and Technology of Greece and PRIMA foundation under the project PULPING (Prima2019-08). The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES to CIMO (UIDB/00690/2020); for the financial support through national funding from the FCT, within the scope of the Project PRIMA Section 2—Multi-topic 2019: PulpIng (PRIMA/0007/2019); and L. Barros and Â. Fernandes thank the national funding by FCT, P.I., through the institutional scientific employment program-contract for their contracts. The authors are also grateful to the Ministry of Education, Science and Technological Development of the Republic of Serbia, grant number 451-03-9/2021-14/ 200007. info:eu-repo/semantics/publishedVersion
- Published
- 2021
33. Response and Defence Mechanisms of Vegetable Crops against Drought, Heat and Salinity Stress
- Author
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Spyridon A. Petropoulos, Maria Giordano, Youssef Rouphael, Giordano, M., Petropoulos, S. A., and Rouphael, Y.
- Subjects
0106 biological sciences ,Sustainable agricultural practice ,defense mechanisms ,Agriculture (General) ,Climate change ,Environmental pollution ,Plant Science ,01 natural sciences ,salinity ,S1-972 ,Crop ,03 medical and health sciences ,water stress ,Molecular mechansim ,Greenhouse effect ,030304 developmental biology ,Abiotic component ,0303 health sciences ,business.industry ,Agroforestry ,Osmotic stre ,Stressor ,fungi ,food and beverages ,extreme temperature ,Salinity ,climate change ,Agriculture ,Environmental science ,osmotic stress ,business ,Agronomy and Crop Science ,010606 plant biology & botany ,Food Science ,Defense mechanism - Abstract
Environmental pollution, increasing CO2 atmospheric levels and the greenhouse effect are closely associated with the ongoing climate change and the extreme climatic events we are witnessing all over the Earth. Drought, high temperature and salinity are among the main environmental stresses that negatively affect the yield of numerous crops, challenging the world food safety. These effects are more profound in vegetable crops which are generally more susceptible to climate change than field or tree crops. The response to single or combined environmental stressors involves various changes in plant morphology and physiology or in molecular processes. Knowing the mechanisms behind these responses may help towards the creation of more tolerant genotypes in the long-term. However, the imediacy of the problem requires urgently short-term measures such as the use of eco-sustainable agricultural practices which can alleviate the negative effects of environmental pollution and allow vegetable crops to adapt to adverse climatic conditions. In this review, the main abiotic stressors were examined, namely drought, heat and salinity stress, focusing on the mechanisms involved in the most common vegetable crops responses. Moreover, the use of eco-sustainable cultural techniques, such as biostimulants, grafting and genomic sequencing techniques, to increase the quality of tomato crop under adverse environmental conditions are also presented.
- Published
- 2021
34. The effects of nutrient solution feeding regime on yield, mineral profile, and phytochemical composition of spinach microgreens
- Author
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Marios C. Kyriacou, Spyridon A. Petropoulos, Giulia Graziani, Youssef Rouphael, Christophe El-Nakhel, Petropoulos, S. A., El Nakhel, C., Graziani, G., Kyriacou, M. C., and Rouphael, Y.
- Subjects
0106 biological sciences ,chlorophylls ,Chlorophyll ,Lutein ,macronutrients ,Spinacia oleracea L ,Macronutrient ,Plant Science ,Horticulture ,Nitrate ,01 natural sciences ,SB1-1110 ,chemistry.chemical_compound ,Nutrient ,UHPLC-HRMS ,Food science ,Vitamin C ,Carotenoid ,040502 food science ,chemistry.chemical_classification ,Phenolic acid ,biology ,nitrates ,carotenoids ,Plant culture ,04 agricultural and veterinary sciences ,Ascorbic acid ,biology.organism_classification ,Microgreen ,Bioactive compound ,chemistry ,flavonoids ,Flavonoid ,Spinach ,0405 other agricultural sciences ,phenolic acids ,010606 plant biology & botany - Abstract
Microgreens are receiving increasing popularity as functional and healthy foods due to their nutritional value and high content of bioactive compounds. The aim of the present study was to evaluate the effects of nutrient deprivation through the regulation of nutrient solution (NS) feeding days on the plant growth and chemical composition of spinach microgreens. For this purpose, spinach microgreens were subjected to four different fertigation treatments—namely, 0 (control), 5, 10, and 20 NS feeding days before harvesting—and harvested tissues were evaluated with regard to fresh and dry yield, color of true leaves, antioxidant activity, and chlorophyll, carotenoid, and phenolic compound contents. The results of our study revealed that prolonged NS feeding (20 NS) resulted in the highest fresh yield and photosynthetic pigment contents (chlorophylls, lutein, and β-carotene). In contrast, mineral concentrations (P, K, Ca, and Mg) were the lowest for the 20 NS, whereas the control (0 NS) and 5 NS recorded the highest concentrations. Apart from that, spinach microgreens subjected to 10 NS treatment recorded 70.7% less nitrates, better mineral concentrations, 7.0% higher total ascorbic acid, similar polyphenol contents, higher DM%, and only 12.6% yield decrease compared to 20 NS treatment. In conclusion, although the highest overall fresh yield was recorded with the 20 NS treatment, the highest nitrate concentrations and the lowest mineral concentrations may raise food safety concerns. On the other hand, 10 NS treatment seems to be the most promising, since it combined high yields with high mineral concentrations and low nitrate concentrations, without compromising bioactive compound (e.g., polyphenols) contents, presenting a cost-effective and sustainable practice for microgreen cultivation.
- Published
- 2021
35. The fate of nitrogen from soil to plants: Influence of agricultural practices in modern agriculture
- Author
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Maria Giordano, Spyridon A. Petropoulos, Youssef Rouphael, Giordano, M., Petropoulos, S. A., and Rouphael, Y.
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Pollution ,NH3 volatilization ,Reactive nitrogen ,media_common.quotation_subject ,Agriculture (General) ,NH ,chemistry.chemical_element ,Environmental pollution ,O emission ,Plant Science ,S1-972 ,Nitrogen turnover ,Nitrate leaching ,chemistry.chemical_compound ,Nitrate ,Environmental protection ,Per capita ,Climate change ,volatilization ,Nitrogen cycle ,media_common ,business.industry ,Eco-sustainable agriculture ,Nitrogen fertilizer ,Nitrogen ,nitrogen fertilizers ,chemistry ,Agriculture ,Environmental science ,N2O emissions ,business ,Agronomy and Crop Science ,Food Science - Abstract
Nitrogen is an element present on Earth in different forms, such as gaseous in the air, dissolved in water, immobilized in the soil, as well as biologically bound in all living organisms. The transition from one form to another constitutes the nitrogen cycle. Current agricultural systems rely on nitrogen fertilizers, which represent the reactive or biologically available nitrogen in soil. The excessive presence of reactive nitrogen in the environment has become a threat to soil, water, and air. The increasing demands for food in the world are associated with significant increase in nitrogen fertilizers inputs which threatens the environment and living organisms. The quantities of nitrogen used per capita in developed countries exceed those in developing countries. However, developed countries are regulated by restrictions of fertilizers inputs in agriculture, whereas such regulations do not exist in most of the developing countries. The need to resort to alternative and eco-sustainable strategies to mitigate the pollution related to human activities, is increasingly evident. This review aims to highlight the fate of nitrogen through the main agricultural practices in modern agriculture. Special attention was given to rocket (Eruca sativa) which is considered a nitrate hyper-accumulator and was used as a case study in the present review. Finally, some eco-sustainable solutions, useful for mitigating or preventing the excessive release of harmful forms of nitrogen into the environment, were also discussed.
- Published
- 2021
36. Grown to Be Blue—Antioxidant Properties and Health Effects of Colored Vegetables. Part II: Leafy, Fruit, and Other Vegetables
- Author
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Shirley L. Sampaio, Nikolaos Tzortzakis, Marios C. Kyriacou, Youssef Rouphael, Francesco Di Gioia, Isabel C.F.R. Ferreira, Spyridon A. Petropoulos, Gioia, F. D., Tzortzakis, N., Rouphael, Y., Kyriacou, M. C., Sampaio, S. L., Ferreira, I. C. F. R., and Petropoulos, S. A.
- Subjects
Anthocyanin ,0106 biological sciences ,Antioxidant ,Physiology ,medicine.medical_treatment ,Clinical Biochemistry ,Coloring agents ,Review ,tomato ,01 natural sciences ,Biochemistry ,Antioxidants ,Anthocyanins ,Common species ,Food science ,Cultivar ,Inflorescence ,leafy vegetables ,fruit vegetables ,Agricultural Sciences ,04 agricultural and veterinary sciences ,Lettuce ,040401 food science ,anthocyanins ,lettuce ,Functional quality ,antioxidants ,Colored ,Fruit vegetables ,Natural colorant ,Leafy vegetables ,Beverage industry ,natural colorants ,Biology ,Tomato ,0404 agricultural biotechnology ,medicine ,inflorescence ,Molecular Biology ,Leafy ,functional quality ,Flavonoids ,Fruit vegetable ,lcsh:RM1-950 ,Natural colorants ,Leafy vegetable ,Cell Biology ,Agriculture Forestry and Fisheries ,lcsh:Therapeutics. Pharmacology ,flavonoids ,Flavonoid ,010606 plant biology & botany ,Plant Sources - Abstract
The current trend for substituting synthetic compounds with natural ones in the design and production of functional and healthy foods has increased the research interest about natural colorants. Although coloring agents from plant origin are already used in the food and beverage industry, the market and consumer demands for novel and diverse food products are increasing and new plant sources are explored. Fresh vegetables are considered a good source of such compounds, especially when considering the great color diversity that exists among the various species or even the cultivars within the same species. In the present review we aim to present the most common species of colored vegetables, focusing on leafy and fruit vegetables, as well as on vegetables where other plant parts are commercially used, with special attention to blue color. The compounds that are responsible for the uncommon colors will be also presented and their beneficial health effects and antioxidant properties will be unraveled.
- Published
- 2020
37. Grown to be blue—antioxidant properties and health effects of colored vegetables. Part I: Root vegetables
- Author
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Marios C. Kyriacou, Francesco Di Gioia, Youssef Rouphael, Nikos Tzortzakis, Isabel C.F.R. Ferreira, Spyridon A. Petropoulos, Shirley L. Sampaio, Petropoulos, S. A., Sampaio, S. L., Di Gioia, F., Tzortzakis, N., Rouphael, Y., Kyriacou, M. C., and Ferreira, I.
- Subjects
Anthocyanin ,0301 basic medicine ,Antioxidant ,genetic structures ,Physiology ,medicine.medical_treatment ,Clinical Biochemistry ,Cyanidin ,Review ,Biochemistry ,blue potatoes ,Anthocyanins ,chemistry.chemical_compound ,Food science ,Carotenoid ,chemistry.chemical_classification ,Agricultural Sciences ,carotenoids ,food and beverages ,Beet root ,04 agricultural and veterinary sciences ,anthocyanins ,040401 food science ,Colored ,visual_art ,visual_art.visual_art_medium ,Natural colorant ,Blue potatoe ,Beverage industry ,Blue potatoes ,natural colorants ,Biology ,betacyanins ,03 medical and health sciences ,Pigment ,0404 agricultural biotechnology ,Functional food ,Antioxidant activity ,Betacyanin ,medicine ,Molecular Biology ,Hue ,Flavonoids ,030109 nutrition & dietetics ,Natural colorants ,Cell Biology ,Agriculture Forestry and Fisheries ,Carotenoids ,chemistry ,Sweet potato ,flavonoids ,Flavonoid ,Betacyanins - Abstract
During the last few decades, the food and beverage industry faced increasing demand for the design of new functional food products free of synthetic compounds and artificial additives. Anthocyanins are widely used as natural colorants in various food products to replenish blue color losses during processing and to add blue color to colorless products, while other compounds such as carotenoids and betalains are considered as good sources of other shades. Root vegetables are well known for their broad palette of colors, and some species, such as black carrot and beet root, are already widely used as sources of natural colorants in the food and drug industry. Ongoing research aims at identifying alternative vegetable sources with diverse functional and structural features imparting beneficial effects onto human health. The current review provides a systematic description of colored root vegetables based on their belowground edible parts, and it highlights species and/or cultivars that present atypical colors, especially those containing pigment compounds responsible for hues of blue color. Finally, the main health effects and antioxidant properties associated with the presence of coloring compounds are presented, as well as the effects that processing treatments may have on chemical composition and coloring compounds in particular.
- Published
- 2019
38. Reducing Energy Requirements in Future Bioregenerative Life Support Systems (BLSSs): Performance and Bioactive Composition of Diverse Lettuce Genotypes Grown Under Optimal and Suboptimal Light Conditions
- Author
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Antonio Dario Troise, Maria Giordano, Paola Vitaglione, Christophe El-Nakhel, Spyridon A. Petropoulos, Marios C. Kyriacou, Antonio Pannico, Youssef Rouphael, Stefania De Pascale, Rouphael, Y., Petropoulos, S. A., El-Nakhel, C., Pannico, A., Kyriacou, M. C., Giordano, M., Troise, A. D., Vitaglione, P., and De Pascale, S.
- Subjects
0106 biological sciences ,Lutein ,Pigmentations ,Plant Science ,Biology ,lcsh:Plant culture ,01 natural sciences ,03 medical and health sciences ,chemistry.chemical_compound ,Neoxanthin ,nitrate ,lcsh:SB1-1110 ,Cultivar ,Carotenoid ,bioactive compound ,polyphenols ,030304 developmental biology ,Original Research ,chemistry.chemical_classification ,0303 health sciences ,bioactive compounds ,bioregenerative food systems ,carotenoids ,food and beverages ,Phenolic acid ,Lactuca sativaL ,light intensity ,carotenoid ,Horticulture ,Light intensity ,polyphenol ,chemistry ,space life support systems ,bioregenerative food system ,Lactuca sativa L ,010606 plant biology & botany ,Violaxanthin - Abstract
Space farming for fresh food production is essential for sustaining long-duration space missions and supporting human life in space colonies. However, several obstacles need to be overcome including abnormal light conditions and energy limitations in maintaining Bioregenerative Life Support Systems (BLSSs). The aim of the present study was to evaluate six lettuce cultivars (baby Romaine, green Salanova, Lollo verde, Lollo rossa, red oak leaf and red Salanova) of different types and pigmentations under optimal and suboptimal light intensity and to identify the most promising candidates for BLSSs. Baby Romaine performed better than the rest of the tested cultivars under suboptimal light intensity, demonstrating a more efficient light-harvesting mechanism. Stomatal resistance increased under suboptimal light conditions, especially in the case of Lollo verde and red oak leaf cultivars, indicating stress conditions, whereas intrinsic water-use efficiency was the highest in baby Romaine and red oak leaf cultivars regardless of light regime. Nitrate content increased under suboptimal light intensity, especially in the cultivars green Salanova and Lollo verde, while P and Ca accumulation trends were also observed in baby Romaine and Lollo verde cultivars, respectively. Chicoric acid was the major detected phenolic acid in the hydroxycinnamic derivatives sub-class, followed by chlorogenic, caffeoyl-tartaric and caffeoyl-meso-tartaric acids. Chicoric and total hydroxycinnamic acids were not affected by light intensity, whereas the rest of the detected phenolic compounds showed a varied response to light intensity. Regarding cultivar response, red oak leaf exhibited the highest content in chicoric acid and total hydroxycinnamic acids content under suboptimal light intensity, whereas red Salanova exhibited the highest hydroxycinnamic derivatives profile under optimal light conditions. The main detected carotenoids were β-cryptoxanthin and violaxanthin+neoxanthin, followed by lutein and β-carotene. All the target carotenoids decreased significantly under low light intensity, while red Salanova maintained a distinct carotenoids profile. Overall, cultivation of assorted lettuce cultivars is the optimal scenario for space farming, where baby Romaine could provide adequate amounts of fresh biomass owing to its high light-use efficiency while red oak leaf and red Salanova could contribute to the daily dietary requirements for health-promoting bioactive compounds such as polyphenols and carotenoids.
- Published
- 2019
39. Dataset on the organic acids, sulphate, total nitrogen and total chlorophyll contents of two lettuce cultivars grown hydroponically using nutrient solutions of variable macrocation ratios
- Author
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Christophe El-Nakhel, Maria Giordano, Giuseppe Colla, Spyridon A. Petropoulos, Stefania De Pascale, Youssef Rouphael, Antonio Dario Troise, Marios C. Kyriacou, Antonio Pannico, Paola Vitaglione, El Nakhel, C., Pannico, A., Kyriacou, M. C., Petropoulos, S. A., Giordano, M., Colla, G., Troise, A. D., Vitaglione, P., De Pascale, S., and Rouphael, Y.
- Subjects
Ion chromatography ,Tartrate ,Lactuca ,Lactuca sativa.L ,lcsh:Computer applications to medicine. Medical informatics ,03 medical and health sciences ,chemistry.chemical_compound ,0302 clinical medicine ,Nutrient ,Agricultural and Biological Science ,NFT ,Oxalate ,Cultivar ,lcsh:Science (General) ,Kjeldahl method ,030304 developmental biology ,0303 health sciences ,Multidisciplinary ,biology ,Growth chamber ,Malate ,food and beverages ,Isocitrate ,biology.organism_classification ,Horticulture ,chemistry ,Chlorophyll ,Total nitrogen ,lcsh:R858-859.7 ,Composition (visual arts) ,Citrate ,030217 neurology & neurosurgery ,lcsh:Q1-390 - Abstract
The data presented in this article were derived from dry and fresh samples of soilless-grown butterhead lettuce (Lactuca sativa L. var. Capitata). Organic acids, total nitrogen, sulphate and total chlorophyll concentrations varied in response to cultivar (red or green butterhead Salanova) and to nutrient solution macrocation ratios (high proportion of K, Ca or Mg). Kjeldahl, spectrophotometry and ion chromatography were the principal employed methods. Data of total nitrogen and sulphate concentrations contribute to the understanding of macrocation uptake by plants and may drive prospective relevant research. Organic acids are indicators of plant tolerance to stress, including nutrient deficiencies, and the variability of their concentrations provide insights to plant stress physiology. The data reported in this paper are related to the research article “The bioactive profile of lettuce produced in a closed soilless system as configured by combinatorial effects of genotype and macrocation supply composition”, authored by El-Nakhel et al. (2020) [1]. Keywords: Lactuca sativa.L, Malate, Tartrate, Oxalate, Citrate, Isocitrate, NFT, Growth chamber
- Published
- 2020
40. The bioactive profile of lettuce produced in a closed soilless system as configured by combinatorial effects of genotype and macrocation supply composition
- Author
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Antonio Dario Troise, Stefania De Pascale, Maria Giordano, Marios C. Kyriacou, Giuseppe Colla, Antonio Pannico, Spyridon A. Petropoulos, Paola Vitaglione, Youssef Rouphael, Christophe El-Nakhel, El-Nakhel, C., Petropoulos, S. A., Pannico, A., Kyriacou, M. C., Giordano, M., Colla, G., Troise, A. D., Vitaglione, P., De Pascale, S., and Rouphael, Y.
- Subjects
Anthocyanin ,Phytochemicals ,Macrocation proportion ,Caffeoyl-meso-tartaric acid (PubChem CID: 447315) ,Ascorbic Acid ,01 natural sciences ,Analytical Chemistry ,Anthocyanins ,chemistry.chemical_compound ,Bioma ,Nitrate ,Genotype ,Biomass ,Cultivar ,Food science ,Carotenoid ,Caffeoyl-tartaric acid (PubChem CID: 129829909) ,chemistry.chemical_classification ,Minerals ,Principal Component Analysis ,Phenolic acid ,Violaxanthin (PubChem CID: 448438) ,Fresh weight ,food and beverages ,04 agricultural and veterinary sciences ,General Medicine ,Lettuce ,β-Cryptoxanthin (PubChem CID: 5281235) ,040401 food science ,Chlorogenic acid (PubChem CID: 1794427) ,Lactuca sativa L ,Composition (visual arts) ,Chlorogenic Acid ,Plant Leave ,β-Carotene (PubChem CID: 5280489) ,Color ,Phytochemical ,Neoxanthin (PubChem CID: 5281247) ,0404 agricultural biotechnology ,stomatognathic system ,Chlorogenic acid ,Cations ,Salanova lettuce® ,Mineral ,Cation ,010401 analytical chemistry ,Nutrients ,Ascorbic acid ,Carotenoids ,0104 chemical sciences ,Plant Leaves ,chemistry ,Lutein (PubChem CID: 145858) ,Bioactive compound ,Chicoric acid (PubChem CID: 5281764) ,Nutrient ,Food Science - Abstract
The effect of cultivar and nutrient solution macrocation proportions (SK, SCa, SMg) on the bioactive content of hydroponically cultivated lettuce was evaluated on two lettuce cultivars (red and green-pigmented Salanova®) grown in a fully controlled Fitotron® chamber. Fresh weight and color attributes were superior in green Salanova and in SK-treated plants, while elevated macrocation proportions (SK, SCa, and SMg) affected the corresponding minerals, P and Na content. SCa and SMg treatments raised ascorbate concentration and reduced nitrate levels in treated plants. Chicoric and chlorogenic acids were higher in red over green Salanova. Chlorogenic acid was higher in SCa and SMg plants and chicoric acid levels were SMg > SCa > SK. The SMg-treated red Salanova contained higher concentrations of target carotenoids. In conclusion, nutrient solution management constitutes an effective cultural practice to increase bioactive properties and functional quality of hydroponically grown lettuce.
- Published
- 2020
41. Improving vegetable quality in controlled environments
- Author
-
Marios C. Kyriacou, Stefania De Pascale, Giuseppe Colla, Spyridon A. Petropoulos, Youssef Rouphael, Rouphael, Y., Kyriacou, M. C., Petropoulos, S. A., De Pascale, S., and Colla, G.
- Subjects
0106 biological sciences ,Salinity ,media_common.quotation_subject ,Phytochemicals ,Biofortification ,Greenhouse ,Context (language use) ,Agricultural engineering ,Horticulture ,Phytochemical ,01 natural sciences ,Eustre ,Hydroponics ,Quality (business) ,media_common ,Food security ,Hydroponic ,Plant biostimulants ,business.industry ,Plant biostimulant ,Biofortification Eustress ,04 agricultural and veterinary sciences ,Product (business) ,Functional quality ,Agriculture ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Business ,Cropping ,Eustress ,Genetic improvement ,010606 plant biology & botany - Abstract
During the last decades, food security has become a vital global concern driven by projections of population increase and exacerbated by the impending pressure of climate change on agriculture. Vegetable crops represent a fundamental ingredient of human diet due to their high nutritional value and bioactive content and could serve towards improving food security and nutritional quality, especially when managed under highly intensified cropping systems in controlled environments. Greenhouse and indoor growing modules not only allow for significantly higher yields compared to open field cropping systems, but also they can facilitate out of season production and substantial manipulation of the chemical composition and bioactive profile of the final product. The present work provides an updated critical overview of scientific advances regarding genotype and microclimate effects on the quality of greenhouse crops. In this context, innovative crop management practices are discussed, including management of the nutrient solution, biofortification and application of plant biostimulants. The review concludes by proposing future research pathways towards enhancing product quality of greenhouse vegetables.
- Published
- 2018
42. The compositional aspects of edible flowers as an emerging horticultural product
- Author
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Cristina Caleja, Eleomar de O. Pires, Isabel C.F.R. Ferreira, Spyridon A. Petropoulos, Youssef Rouphael, Lillian Barros, Francesco Di Gioia, Pires, E. O., Di Gioia, F., Rouphael, Y., Ferreira, I. C. F. R., Caleja, C., Barros, L., and Petropoulos, S. A.
- Subjects
Anthocyanin ,Pigments ,Phenolic compound ,High variability ,antioxidant activity ,Pharmaceutical Science ,Review ,Flowers ,phenolic compounds ,Biology ,alkaloids ,betacyanins ,Antioxidants ,Analytical Chemistry ,Anthocyanins ,Human health ,QD241-441 ,Alkaloids ,Common species ,Antioxidant activity ,Betacyanin ,Alkaloid ,Drug Discovery ,Humans ,Physical and Theoretical Chemistry ,Edible flowers ,Flavonoids ,Plant Extracts ,business.industry ,Organic Chemistry ,food and beverages ,anthocyanins ,Edible flower ,Phenolic compounds ,Biotechnology ,Product (business) ,edible flowers ,Chemistry (miscellaneous) ,Food products ,Molecular Medicine ,Betacyanins ,Plants, Edible ,business - Abstract
Edible flowers are becoming very popular, as consumers are seeking healthier and more attractive food products that can improve their diet aesthetics and diversify their dietary sources of micronutrients. The great variety of flowers that can be eaten is also associated with high variability in chemical composition, especially in bioactive compounds content that may significantly contribute to human health. The advanced analytical techniques allowed us to reveal the chemical composition of edible flowers and identify new compounds and effects that were not known until recently. Considering the numerous species of edible flowers, the present review aims to categorize the various species depending on their chemical composition and also to present the main groups of compounds that are usually present in the species that are most commonly used for culinary purposes. Moreover, special attention is given to those species that contain potentially toxic or poisonous compounds as their integration in human diets should be carefully considered. In conclusion, the present review provides useful information regarding the chemical composition and the main groups of chemical compounds that are present in the flowers of the most common species. info:eu-repo/semantics/publishedVersion
- Published
- 2018
43. Halophytic herbs of the Mediterranean basin: An alternative approach to health.
- Author
-
Petropoulos SA, Karkanis A, Martins N, and Ferreira ICFR
- Subjects
- Health, Humans, Mediterranean Region, Plant Extracts chemistry, Plants, Medicinal classification, Plants, Medicinal metabolism, Salt-Tolerant Plants classification, Salt-Tolerant Plants metabolism, Sodium Chloride analysis, Sodium Chloride metabolism, Plant Extracts pharmacology, Plants, Medicinal chemistry, Salt-Tolerant Plants chemistry
- Abstract
Wild native species are usually grown under severe and stressful conditions, while a special category includes halophytic species that are tolerant to high salinity levels. Native halophytes are valuable sources of bioactive molecules whose content is higher in saline than normal conditions, since the adaptation to salinity mechanisms involve apart from changes in physiological functions the biosynthesis of protectant molecules. These compounds include secondary metabolites with several beneficial health effects which have been known since ancient times and used for medicinal purposes. Recent trends in pharmaceutical industry suggest the use of natural compounds as alternative to synthetic ones, with native herbs being strong candidates for this purpose due to their increased and variable content in health promoting compounds. In this review, an introductory section about the importance of native herbs and halophyte species for traditional and modern medicine will be presented. A list of the most important halophytes of the Mediterranean basin will follow, with special focus on their chemical composition and their reported by clinical and ethnopharmacological studies health effects. The review concludes by suggesting future requirements and perspectives for further exploitation of these valuable species within the context of sustainability and climate change., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
- Full Text
- View/download PDF
44. Long-term storage effect on chemical composition, nutritional value and quality of Greek onion landrace "Vatikiotiko".
- Author
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Petropoulos SA, Ntatsi G, Fernandes Â, Barros L, Barreira JC, Ferreira IC, and Antoniadis V
- Subjects
- Food Storage, Greece, Minerals analysis, Temperature, Nutritive Value, Onions chemistry
- Abstract
The effect of storage at two temperatures (5±1 and 25±1 °C and 60-70±5% RH for both temperatures) on marketability and quality features of dry bulbs of local landrace "Vatikiotiko", "Sivan F1", "Red Cross F1" and "Creamgold" was examined. During storage measurements for fresh and dry weight of bulbs, tunic and flesh color, bulb firmness, nutritional value and mineral composition were taken at regular intervals. Storage concluded when either bulbs lost marketable quality or sprouting occurred. "Vatikiotiko" onion can be stored for at least 7months at 25±1 °C, whereas at 5±1 °C storage could be prolonged without significant marketability and quality loss. The fact that "Vatikiotiko" landrace can be considered a "storage" onion has to be capitalized in order to increase total production and yield, since storage could cover the market needs that arise throughout the year., (Copyright © 2016 Elsevier Ltd. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
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