30 results on '"Ajani Y"'
Search Results
2. The Intelligent Libraries: Innovation for a Sustainable Knowledge System in the Fifth (5th) Industrial Revolution
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Adigun Ganiyu O., Ajani Yusuf Ayodeji, and Enakrire Rexwhite T.
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intelligent libraries ,innovation ,sustainable knowledge system ,fifth industrial revolution ,Bibliography. Library science. Information resources - Abstract
The Fifth Industrial Revolution is ushering in a profound era of technological advancement and societal transformation, prompting a critical examination of the evolving role of libraries in this digital landscape. Traditionally regarded as the custodians of knowledge, libraries must adapt to these changing dynamics of the digital world while preserving their core principles. This study looks into the strategic integration of advanced technologies, aiming to redefine the mission of libraries in the face of complex challenges. The Fifth Industrial Revolution encompasses a convergence of diverse technologies, including the Internet of Things (IoT), cloud computing, biotechnology, nanotechnology, and quantum computing, all underpinned by the currency of data. Artificial intelligence (AI) is a focal point, promising enhancements in user experiences and operational efficiency, however, it also raises critical ethical and privacy concerns that challenge fundamental library principles. This research employs an interpretive content/document analysis approach to examine the evolving roles of libraries, considering their pivotal function in bridging the digital divide, providing equitable access to technology and digital resources, advancing research and innovation, and fostering community engagement. The study underscores the imperative to address challenges related to data privacy, digital inclusion, resource allocation, intellectual property, and sustainability. However, despite these challenges, libraries are poised to remain indispensable pillars of education, research, and community interaction. To do so, they must embrace technology strategically to redefine their roles and expand their influence within evolving knowledge systems. more...
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- 2024
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Catalog
3. Tryptophan and Sterols from Salvia limbata
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Saeidnia, S., Gohari, A. R., Maryam Malmir, Moradi-Afrapoli, F., and Ajani, Y.
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salvia limbata ,RA1190-1270 ,Toxicology. Poisons ,daucosterol ,tryptophan ,Therapeutics. Pharmacology ,RM1-950 ,stigmasterol- 3-o-glucoside - Abstract
Background: Salvia limbata is an aromatic herbaceous plant and grows widely in Iran Turkey and Afghanistan. In the previous study, six flavones together with rosmarinic acid were isolated from the ethyl acetate and methanol extracts of S. limbata. In this report, we focused on the isolation and identification of the glycosylated sterols and the main accumulated amino acid of the species S. limbata, which has not been previously reported. Methods: Aerial parts of the plant were dried, cut into small pieces and extracted with ethyl acetate and methanol by percolation at room temperature. The separation process was carried out using several chromatographic methods. Structural elucidation was based on NMR data, in comparison with those reported in the literature. Results: The isolated compounds (Figure 1) from the ethyl acetate and MeOH extracts of S. limbata were identified as beta-sitosterol (1), stigmasterol (2), daucosterol (3), stigmasterol 3- O-glucoside (4) and tryptophan (5) by comparison of their NMR spectral data with those reported in the literature Conclusions: S. limbata can accumulate the tryptophan as a major free amino acid together with sterols and their glucosides. Therefore, consumption of S. limbata (as a herbal tea or other preparations), which contains the essential amino acid tryptophan, might be useful for dietary deficiency of tryptophan. more...
- Published
- 2011
4. Evaluation of Botanical Traits and Oil Content/Chemical Composition in Iranian Thymus carmanicus Jalas Ecotypes
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Makkizadeh Tafti, M., Naghdi Badi, H., Rezazadeh, Sh, Ajani, Y., and Kadkhoda, Z.
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thymus caramanicus ,thymol ,RA1190-1270 ,carvacrol ,Toxicology. Poisons ,Therapeutics. Pharmacology ,RM1-950 ,essential oil - Abstract
Background: Thymus caramanicus is an aromatic and perennial plant of Lamiaceae family, which distributes in different areas of Iran. Objective: In this study, botanical traits and oil content/chemical composition of Thymus carmanicus Jalas ecotypes are evaluated in natural habitats of Iran. Methods: Ecotypes of Th. carmanicus were collected from Kerman (Sirch and Rayen), Yazd, Esfahan and Shahrud. In addition, the geographical origins and the botanical traits of ecotypes were recorded. Oils were extracted by hydrodistillation method for 3h and its constituents determined by GC and GC-MS. Results: The essential oils content (w/w%) of the Kerman-Rayen, Kerman-Sirch, Yazd, Shahrud and Esfahan ecotypes were 2.5%, 1.9%, 2.0%, 1.8% and 1.5%, respectively. 34, 36, 37, 38 and 33 components were identified and quantified in oil samples of Kerman-Rayen, Kerman-Sirch, Yazd, Shahrud and Esfahan ecotypes, representing 98.7, 98.9, 96.9, 92.3 and 98.2% of these oils, respectively. The ranges of major constituents were as follow: carvacrol (42.0 – 80.7%), thymol (4.1 – 11.8%), ρ-cymene (2.5 – 12.8%), γ- terpinene (3.7–7.3%). and borneol (3.1–8.3%). The carvacrol was the main compound in all ecotypes. Conclusion: Th. carmanicus contains the high content of essential oil and phenolic components including carvacrol and thymol, which can be used in pharmaceutical industries. more...
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- 2010
5. Chemical Compounds of Essensial oil and Antibacterial Effects of Thymus caucasicus
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Hajiaghaee, R., Rezazadeh, Sh, Ajani, Y., Nasrin Samadi, Ashoury, N., Agha-Mohammadzade, S., and Alavi, H. R.
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t. caucasicus ,antimicrobial activity ,RA1190-1270 ,Toxicology. Poisons ,Therapeutics. Pharmacology ,RM1-950 ,essential oil - Abstract
Background: Thymus, one of the important genus of Labiatae family, have been used since ancient times as folk remedies for some medical treatments. Objective: In this study, chemical compositions of essential oil of Thymus caucasicus were analyzed and antibacterial effects of fractions were surveyed. Methods: Thymus caucasicus (lamiaceae) at the flowering stage were collected, from Ardabil province (No. 41and 87 at Central Herbarium of Institute of Medicinal Plants, ACECR). The essential oil aerial parts of T. caucasicus was collected by Hydrodistillation and Steam distillation method. The essential oils were dried over anhydrous sodium sulphate and after filtaration, stored at +4˚C until tested and GC/MS analyzed. Antibacterial activities of essential oil and fractions of the plant were studied by agar dilution on eight bacterial strains. Results: In hydro and steam distillation essence of T. caucasicus, 44 and 58 compounds were identified, respectively. In vitro antimicrobial activities showed that was positive effect against Staphylococcus aureus, Staphylococcus epidermidis, Bacillus subtilis, Escherichia coli, Klebsiella pneumonia, Pseudomonas aeruginosa and Meticillin Resistant Staphylococcus aureus. Conclusion: Nerolidol was major compound in hydro and steam distillation essential oil of T. caucasicus. In this study, we showed the essential oil and n- butanol fraction of T. caucasicus have lower MIC against tested microorganisms. more...
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- 2009
6. Medicinal Application of Native Plants (Lamiaceae and Rosaceae Family) in Alamut Region in Gazvin Province
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Ahvazi, M., Mozaffarian, V., Nejadsatari, T., Mojab, F., Charkhchiyan, M. M., Farahnaz Khalighi-Sigaroodi, and Ajani, Y.
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lamiaceae ,ethnobotany ,alamut ,RA1190-1270 ,Toxicology. Poisons ,rosacrae ,Therapeutics. Pharmacology ,RM1-950 ,gazvin ,medicinal plants - Abstract
Background: Considering the fact that traditional knowledge forms the basis for development of new natural products in the other hands the elder people in some villages possess the traditional knowledge and with death of them, this knowledge is rapidly eroding. So it is an urgent necessity to record and conserving as quickly as possible all information about plants. Objective: Consideration and study of connections between usage and cultures believes about medicinal plants (Ethnobotany) is interesting and important basis for research. The aim of this research was studied of two family (Lamiaceae and Rosaceae) in some Alamut villages to know how the people use of these plants for their treatment. Methods: The investigated area was divided into different villages with the help of map. Questionnaires were used and devised to identify and document the traditional knowledge of local people. Information and data on various aspects of the plants such as traditional uses, and collection method and time of each species in the area were gathered from the local experienced persons through interviews and discussions. The plants were gathered from different altitude and sites. Then the fully dried specimens were mounted on herbarium sheets. A set of voucher specimens were deposited to IMPH. Results: In this investigation 11 medicinal species of Lamiaceae and 10 medicinal species of Rosaceae family were found that used frequently by native people. Conclusion: In this region there are some rare plants that can be subjected for investigations by researcher for their effects that may be interesting for their therapeutic effects. more...
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- 2007
7. Study on Chemical Composition and Antimicrobial Activity of the Essential Oil of Thymus trautvetteri Klokov & Desj. – Shost
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Shahnazi, S., Farahnaz Khalighi-Sigaroodi, Ajani, Y., Yazdani, D., Ahvazi, M., and Taghizad-Farid, R.
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antimicrobial activity ,RA1190-1270 ,Toxicology. Poisons ,Therapeutics. Pharmacology ,RM1-950 ,thymus trautvetteri ,essential oil - Abstract
Background: The genus Thymus belongs to Lamiaceae family. This genus is comprised of about 350 species widespread in the world. 14 species exist in Iran of which four are endemic. Objective: In this study chemical compounds and antibactrial activity in essential oil of Thymus trautvetteri was identified. Methodes: Thymus trautvetteri has been collected from the highlands of Ardabil province in june 2006. Then air-dried aerial parts of the plant were submitted to hydrodistillation using a Clevenger apparatus to produce the essential oil and the extract was analysed by GC/MASS. Investigation of antimicrobial activity was conducted by Disc-diffusion, MIC and MBC technique and different antibiotics compared with antimicrobial activity of this essential oil. Results: In this study, 49 constituents were found representing 99.76% of the oil. The major components were thymol (24.43%), borneol (11.36%), para-cymene (10.09%) and gamma-terpinene (7.78%), alpha-pinene (5.29%) and carvacrol (5.07%). The antibacterial activity of essential oil of this plant was assayed against seven bacteria and Staphylococcus aureus resulted to be the most sensitive microorganism with a MIC value of 125 µg/ml. This study showed that essential oil of this plant have strong inhibitory and bactricidal effects against gram-positive and gram-negative bacteria. Conclusion: Identification of chemical compounds of this species showed that thymol represented the most abundant compounds as the other Thymus species. The antimicrobial activity of essential oil of Thymus trautvetteri can be attributed of thymol and other terpenoides compounds. more...
- Published
- 2007
8. Characterization of Morphological, Phytochemical and Molecular Diversity of Artemisia annua Accessions in Hyrcanian Area of Iran.
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Naghavi, M. R., Aryakia, E., Hadi, S., Ghafoori, H., Mousavi, H., Ramazani, H., Feyzbakhsh, M., Ajani, Y., Farahmand, Z., Poorhosseini, L., and Fazeli, S. A. Shahzadeh
- Abstract
Artemisia annua L. is an important medicinal plant used as an original source of artemisinin for treating malaria. Although there is a wide distribution of A. annua in Hyrcanian Areas (Mazandaran, Guilan, and Golestan Provinces in N Iran), no considerable effort has been made for diversity assessment. In this study, morphological, phytochemical, and molecular characterization of A. annua accessions in this area were assessed using 4 quantitative characteristics (height, fresh weight, dry weight, and trichome density), artemisinin content, and 15 ISSR primers. Using these traits, a high level of morphological, phytochemical and molecular diversity was revealed among A. annua accessions in the provinces (populations) of Hyrcanian Areas. At inter-population level, the highest value of artemisinin was observed in Mazandaran Province. Moreover, significant correlation between artemisinin content and trichome density was observed that could be useful for indirect selection of artemisinin yield in different accessions of A. annua. In addition, fifteen ISSR primers generated a total number of 222 amplified bands, consisting of 177 and 45 polymorphic and monomorphic loci across the 60 accessions, respectively. These results indicate that ISSR-PCR is a reliable tool for fingerprinting A. annua at the intra-population level. Our results altogether are valid contributions for gene bank management and Artemisia annua breeding programs. [ABSTRACT FROM AUTHOR] more...
- Published
- 2019
9. Comparison of the antioxidant activity and total phenolic contents in some Stachys species
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Khanavi, M, Hajimahmoodi, M, Cheraghi-Niroomand, M, Kargar, Z, Ajani, Y, Hadjiakhoondi, A, and Oveisi, MR
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Stachys, antioxidant, total phenol - Abstract
The methanolic extracts of the aerial parts of nine Stachys species: S. persica Gmel., S. fruticulosa M. B., S. laxa Boiss. & Buhse., S. inflata Benth., S. turcomanica Trautv., S. subaphylla Rech. F., S. setiferaC. A. Mey., S. byzantina C. Koch and S. trinervis Aitch. & Hemsl. were investigated for their antioxidant activity and total phenolic content using FRAP and Folin-Ciocalteu assays respectively. S. persica Gmel. and S. fruticulosa M. B. had the highest antioxidant activity (61.42 and 62.02 mmol FeII/100g) and total phenolic content (3294.96 and 4450.36 mg gallic acid/100 g) among these nine species. There was a direct correlation between total phenol and antioxidant activity (R2 = 0.9446, p 0.001) which indicates that polyphenols are the main antioxidants. more...
- Published
- 2010
10. Coumarins from the aerial parts of Lomatopodium staurophyllum
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Malmir, M, primary, Gohari, AR, additional, Saeidnia, S, additional, and Ajani, Y, additional
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- 2012
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11. Specifying Human Platelet cAMP and cGMP Phosphodiesterase Inhibitory Activity of the Plants Used in Traditional Iranian Medicine for the Purpose of Erectile Dysfunction
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Khanavi, M., primary, Azimi, H., additional, Ghiasi, S., additional, Hassani, S., additional, Rahimi, R., additional, Nikfar, S., additional, Ajani, Y., additional, Shams-Arde, M.R., additional, and Abdollahi, M., additional more...
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- 2012
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12. Antioxidant activity and major constituents of methanol extract of Polygonum hyrcanicum
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Moradi-Afrapoli, F, primary, Yassa, N, additional, Saeidnia, S, additional, Ajani, Y, additional, Malmir, M, additional, Shamsi, M, additional, Mirjani, M, additional, Dolatabadi, R, additional, and Hadjiakhoondi, A, additional more...
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- 2010
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13. A NEW SPECIES OF FERULA (UMBELLIFERAE) FROM SOUTHERN IRAN
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Ajani, Y., primary and Ajani, M., additional
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- 2008
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14. Analysis of some Iranian Mentha species
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Hajimehdipoor, H, primary, Zahedi, H, additional, Kalantari, N, additional, Abedi, Z, additional, Soleimani, H, additional, Pirali, M, additional, and Ajani, Y, additional
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- 2008
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15. Comparison of the Essential Oil Composition ofStachys trinervisAitch. & Hemsl. andStachys subaphyllaRech. F
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Khanavi, M., primary, Farahanikia, B., additional, Janbakhsh, S., additional, Sheibani, S., additional, Hoseini-Sajedi, S.M., additional, Salahi-Oliaee, M.H., additional, Ajani, Y., additional, and Hadjiakhoondi, A., additional more...
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- 2008
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16. Comparison of the Essential Oil Composition of Stachys trinervisAitch. & Hemsl. and Stachys subaphyllaRech. F
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Khanavi, M., Farahanikia, B., Janbakhsh, S., Sheibani, S., Hoseini-Sajedi, S.M., Salahi-Oliaee, M.H., Ajani, Y., and Hadjiakhoondi, A.
- Abstract
AbstractThe essential oils obtained from the aerial parts of Stachys trinervisAitch. & Hemsl. and Stachys subaphyllaRech. F. were analysed by using GC and GC-MS. Sixteen compounds representing 95.43 % of S. trinervisoil were identified. The main ones were Ot-pinene (42.68 %), ô-2-carene (31.90 %), 1,8-cineole (7.03 %), limonene (4.39 %) and (Z)-ß-ocimene (4.21 %). Twenty three components accounting for 97.62 % of S. subaphyllaoil were identified. The major constituents were ô-2-carene (23.93 %), a-pinene (19.29 %), sabinene (19.11 %), ô-3-carene (9.22 %) and (Z)-ß-ocimene (5.90 %). Both oils were rich in monoterpene hydrocarbons, especially a-pinene and ô-2-carene. more...
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- 2008
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17. Cytotoxic effects of essential oils and extracts of some Mentha species on Vero, Hela and Hep2 cell lines
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Nahid Rahimifard, Hajimehdipoor, H., Hedayati, M. H., Bagheri, O., Pishehvar, H., and Ajani, Y.
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cytotoxic effects ,mtt ,hep2 cell line ,RA1190-1270 ,Toxicology. Poisons ,hela ,mentha ,Therapeutics. Pharmacology ,RM1-950 ,vero - Abstract
Background: Mentha species are widely used in traditional medicine mostly as anti-flatulence. Nowadays, their usage as flavor and preservative in food, cosmetic and pharmaceutical industries has been developed. Moreover, cytotoxic effects of some Mentha species have been reported. Objective: In this study, cytotoxic properties of Mentha piperita, M. spicata, M. aquatica, M. crispa, M. pulegium and M. longifolia have been investigated. Methods: Different concentrations of essential oils and total extracts of six Mentha species were tested by MTT assay against Vero, Hep2 and Hela cell lines. Results: The results showed that all samples were toxic against Vero, Hela and Hep2 cell lines (IC50 28.1-166.2 µg/ml). Conclusion: All examined Mentha species extracts and essential oils have cytotoxic effects but some of them could be considered as potent toxic agents. more...
18. Sterols and flavonoids of Lomatopodium staurophyllum
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Gohari, A. R., Saeidnia, S., Maryam Malmir, Yazdanpanah, M., and Ajani, Y.
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stigmasterol acetate ,quercetin 3 -o-glucoside ,RA1190-1270 ,Toxicology. Poisons ,food and beverages ,lomatopodium staurophyllum ,quercetin 3 – o - rhamnoglucoside ,apiaceae ,nonanal ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Background: The genus Lomatopodium Fisch. & C.A.Mey., belongs to Apiaceae family and contains one herbaceous species growing wildly in Iran. There are only a few papers about the chemical constituents of these plants. Here, we focused on the isolation and identification of the main flavonoid glycosides and sterols from the aerial parts of L. staurophyllum, which has not been previously reported. Methods: Flowered aerial parts of the plant were dried and cut into small pieces, then extracted with ethyl acetate and methanol by percolation at room temperature. The separation process was carried out using several chromatographic methods. Structural elucidation was based on NMR and MS data, in comparison with those reported in the literature. Results: The isolated compounds from ethyl acetate and methanol extracts of L. staurophyllum were identified as nonanal (1), stigmasterol acetate (2), beta-sitosterol (3), quercetin 3-O-glucoside (4) and quercetin 3 – O - rhamnoglucoside (5) by comparison of their NMR spectral data with those reported in the literature. Conclusion: Ethyl acetate and methanol extracts of L. staurophyllum contain various flavonol glycosides and sterols as the main components. Pelargonic aldehyde (nonanal), a growth promoting factor in plant cells, is found to be occurred in this species and might be a cause of anti -diarrhea activity. more...
19. The study of morphological characteristics of St. John's wort (Hypericum perforatum L.) populations in Iran's natural habitats
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Riazi, A., Majnoun Hosseini, N., Naghdi Badi, H., Mohammad Reza Naghavi, Rezazadeh, Sh, and Ajani, Y.
20. Characterization of morphological, phytochemical and molecular diversity of Artemisia annua accessions in hyrcanian area of Iran
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Mohammad Reza Naghavi, Aryakia, E., Hadi, S., Ghafoori, H., Mousavi, H., Ramazani, H., Feyzbakhsh, M., Ajani, Y., Farahmand, Z., Poorhosseini, L., and Fazeli, S. A. Shahzadeh
21. The chemical composition and antimicrobial activity of essential oil of Satureja intermedia C. A. Mey
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Shahnazi, S., Khalighi-Sigaroodi, F., Ajani, Y., Darab Yazdani, Taghizad-Farid, R., Ahvazi, M., and Abdoli, M.
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satureja intermedia c. a. mey ,antimicrobial activity ,savory ,RA1190-1270 ,Toxicology. Poisons ,Therapeutics. Pharmacology ,RM1-950 ,essential oil - Abstract
Background: The genus Satureja belongs to Lamiaceae family. 12 species exist in Iran of which 8 are endemic. Some of this genus had shown antibacterial effects. Objective: In this study chemical compounds and antibacterial activity of essential oil of Satureja intermedia was identified. Methods: Satureja intermedia has been collected from the elevation of Ardabil province in August 2006. Then air-dried aerial parts of the plant were submitted to hydrodistillation using a Clevenger apparatus to produce the essential oil and was analysed by GC/MASS. Investigation of antimicrobial activity was conducted by Disc-diffusion, MIC and MBC technique and different antibiotics compared with antimicrobial activity of this essential oil. Results: In this study, 34 constituents were found representing 99.8% of the oil. The major components were thymol (25.6%), para-Cymene (21.44%), gamma-Terpinene (20%), Carvacrol (9.48%), alpha-Terpinene (7.94 %) and Myrcene (3.58 %). The antibacterial test results showed that essential oil of this plant had a great potential antibacterial activity against Gram-positive and Gram-negative bacteria. Conclusion: Results presented here may suggest that the essential oil of Satureja intermedia possess antibacterial properties and is therefore a potential source of antibacterial ingredients for the food and pharmaceutical industry. more...
22. Dark-centred umbels in Apiaceae: diversity, development and evolution.
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Claßen-Bockhoff R, Celep F, Ajani Y, Frenken L, Reuther K, and Doğan M
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The wild carrot ( Daucus carota ) is famous for its dark flowers in the umbel centre. Several studies have been conducted to figure out their functional significance, but the evolution of the dark centre remains an enigma. In the present paper, we consider all known apioid species with dark-centred umbels to get a deeper understanding of their biology and evolution. Based on herbaria studies, literature and field work, we reconstructed the distribution area of 10 species (7 genera, 6 clades) of Apiaceae-Apioideae. To recognize homology of the dark structures, developmental studies were conducted in Artedia squamata and Echiophora trichophylla Field studies included architecture, flower morph distribution (andromonoecy) and flowering sequence within the plants, abundancy and behaviour of umbel visitors and preliminary manipulation experiments (removal/adding of dark structures). The dark structures are not homologous to each other. In the Daucus alliance, central flowers or umbellets are conspicuous, whereas in other species dark brush-like ( A. squamata ) or club-shaped structures ( Dicyclophora persica , Echinophora trichophylla , Tordylium aegyptiacum , T. cappadocicum ) develop from a naked receptacle. Species are andromonoecious, have a modular architecture and flower in multicyclic protandrous sequence. Among the many umbel visitors, beetles were the most abundant group. Only visitors found on umbels in both flowering phases were recognized as possible pollinators. Manipulation experiments indicated that the dark structures influence the behaviour of some, but not all umbel visitors. In Echinophora trichophylla , a massive gall infection was observed. It is evident that the dark structures evolved several times in parallel. The brush- and club-shaped structures are interpreted as the results of mutations affecting umbel development. Dark umbel centres are most likely stabilized by selection due to their general adaptive function. Their appearance in an area known as a hotspot of beetle pollination gives rise to the assumption that they may act as beetle marks., Competing Interests: None declared., (© The Author(s) 2023. Published by Oxford University Press on behalf of the Annals of Botany Company.) more...
- Published
- 2023
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23. Astrodaucus persicus as a new source of bioinsectisides against malaria vector, Anopheles stephensi.
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Goodarzi S, Vatandoost H, Abai MR, Tavakoli S, Hatamian A, Ajani Y, Hadjiakhoondi A, Yassa N, and Tofighi Z
- Abstract
Objective: To determine the larvicidal activities of petroleum ether, chloroform, ethyl acetate and methanol fractions of roots and fruits extracts of Astrodaucus persicus from Apiaceae family against malaria vector, Anopheles stephensi (An. stephensi)., Methods: Twenty five third instar larvae of An. stephensi were exposed to various concentrations (10-160 g/L) of fractions and were assayed according to World Health Organization protocol. The larval mortality was calculated after 24 h treatment., Results: Among tested fractions, the highest larvicidal efficacy was observed from ethyl acetate fraction of fruits extract with 50% and 90% mortality values (LC
50 and LC90 ) of 34.49 g/L and 108.61 g/L, respectively. Chloroform fraction of fruits extract was the second larvicidal sample with LC50 of 45.11 g/L and LC90 of 139.36 g/L. Petroleum ether fractions of fruits and roots and methanol fraction of fruits showed moderate toxicity against An. stephensi., Conclusions: Astrodaucus persicus is a potential source of valuable and natural larvicidal compounds against malaria vector, An. stephensi and can be used in mosquitoes control programs as an alternative to synthetic insecticides., (Copyright © 2017 Hainan Medical University. Production and hosting by Elsevier B.V. All rights reserved.) more...- Published
- 2017
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24. Phytochemical and Antioxidant Investigation of the Aerial Parts of Dorema glabrum Fisch. & C.A. Mey.
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Delnavazi MR, Hadjiakhoondi A, Delazar A, Ajani Y, Tavakoli S, and Yassa N
- Abstract
Dorema glabrum Fisch. & C.A. Mey. (Apiaceae) is a monocarpic perennial plant distributed in southern Caucasus. In Azerbaijan Republic folk medicine, the gum-resin of this species is used as a diuretic and anti-diarrheal agent. It is also traditionally used for the treatment of bronchitis and catarrh. In the present study, chemical constituents of the essential oil and extract of D. glabrum aerial parts were investigated and their free radical scavenging potentials were assessed. GC-MS and GC-FID analyses of the plant essential oil resulted in identifying twenty compounds, out of which elemicin (38.6%) and myristicin (14.3%) were main compounds. Seven compounds including daucosterol (1), chlorogenic acid (2), a mixture of cynarin (3) and 3,5-di-O-caffeoylquinic acid (4), isorhamnetin-3-O-β-D-glucopyranoside (5), isoquercetin (6) and astragalin (7) were also isolated from the ethyl acetate and methanol fractions of D. glabrum aerial parts using different chromatographic methods on silica gel (normal and reversed-phase) and sephadex LH20. Structures of the isolated compounds were elucidated using UV and (1)H, (13)C-NMR spectrain comparison with those reported in respective published data. Antioxidant activities of the crude extract, fractions and isolated compounds were evaluated using DPPH free radical scavenging assay method. Among the fractions, methanol fraction (IC50=53.3 ±4.7μg mL(-1)) and among the isolated compounds, caffeoylquinic acid derivatives exhibited the highest free radical scavenging activity (IC50= 2.2-2.6 μg mL(-1)). more...
- Published
- 2015
25. Presence of phthalate derivatives in the essential oils of a medicinal plant Achillea tenuifolia.
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Manayi A, Kurepaz-Mahmoodabadi M, Gohari AR, Ajani Y, and Saeidnia S
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- Gas Chromatography-Mass Spectrometry, Humans, Oils, Volatile adverse effects, Phthalic Acids adverse effects, Phytotherapy, Plant Oils adverse effects, Plant Roots, Plants, Medicinal, Risk Assessment, Achillea, Oils, Volatile chemistry, Phthalic Acids analysis, Plant Oils chemistry
- Abstract
Background: Phthalate, esters of phthalic acid, are mainly applied as plasticizers and cause several human health and environment hazards. The essential oils of Achillea species have attracted a great concern, since several biological activities have been reported from varieties of these medicinal species. On the other side, due to the problems regarding the waste disposal in developing countries, phthalate derivatives can easily release from waste disposal to the water and soil resulting in probable absorption and accumulation by medicinal and dietary plants. As a matter of fact, although the toxicity of phthalate derivatives in human is well-known, food crops and medicinal plants have been exposing to phthalates that can be detected in their extracts and essential oils. Achillea tenuifolia (Compositea) is one of these herbaceous plants with traditional applications which widely growing in Iran., Finding: The plant root was subjected to hydro-distillation for 4 h using Clevenger type apparatus to obtain its essential oil before and after acid treatment. Both of the hydro-distilled essential oils were analysed by GC-MS method resulted in recognition of their constituent. Phthalate contamination as (1, 2-benzenedicarboxylic acid, bis (2-methylpropyl) ester (5.4%) and phthalic acid (4.5%), were identified in the first and second extracted oils, respectively., Conclusion: As a warning, due to the potential role of phthalates to cause reproductive toxicity, disturb of endocrine system and causing cancers, medicinal plants have to be considered through quality control for detection of these compounds. more...
- Published
- 2014
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26. Alpha-amylase inhibitory activity and phytochemical study of Zhumeria majdae Rech. f. and Wendelbo.
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Mirshafie B, Mokhber-Dezfouli N, Manayi A, Saeidnia S, Ajani Y, and Gohari AR
- Abstract
Background: Zhumeria majdae (Lamiaceae) is an endemic species growing in the South parts of Iran especially Hormozgan province. The plant is so-called Mohrekhosh locally and widely used for medicinal purposes including stomachache and dysmenorrhea., Objective: In order to separation and identification of the main flavonoid glycosides of the plant (aerial parts including leaves, stems, flowers, and fruits were used) and evaluation of its alpha-amylase inhibitory (AAI) activity, methanolic extract was prepared and fractionated to botanolic portion., Materials and Methods: Isolation of the main compounds of the butanol extract of the plant have been performed using different column chromatography methods such as high-performance liquid chromatography (C18 column) and Sephadex LH-20 as well. The isolated compounds were identified by Hydrogen-1 nuclear magnetic resonance and Carbon-13 nuclear magnetic resonance spectra and comparison with those reported in previous literature. Moreover, inhibitory activity of the butanolic extract of the plant against alpha-amylase enzyme was examined in different concentrations (15-30 mg/mL), where acarbose used as a positive control., Results: Three flavonoid glycosides: Linarin (1), hispidulin-7-O-(4-O-acetyl-rutinoside) (2), hispidulin-7-O-rutinoside (3) were successfully identified in the extract. The activity of alpha amylase enzyme was dose-dependently suppressed by the butanol extract. The extract exhibited the highest inhibition at 30 mg/mL toward enzyme (77.9 ± 2.1%), while acarbose inhibited the enzyme at 20 mg/mL by 73.9 ± 1.9%. The inhibitory concentrations of 50% for the extract and acarbose were calculated at 24.5 ± 2.1 and 6.6 ± 3.1 mg/mL, respectively., Conclusion: Z. majdae contains glycosylated flavones and could be a good candidate for anti-diabetic evaluations in animal and clinical trials due to possessing AAI activity. more...
- Published
- 2014
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27. Quantification of verbascoside in medicinal species of Phlomis and their genetic relationships.
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Sarkhail P, Nikan M, Sarkheil P, Gohari AR, Ajani Y, Hosseini R, Hadjiakhoondi A, and Saeidnia S
- Abstract
Background: The genus Phlomis (Lamiaceae) is introduced by its valuable medicinal species, of which 17 species are growing wildly and ten of them are exclusively endemic of Iran. The main phytochemical characteristic of this genus is presence of iridoid glycosides including ipolamide, auroside, lamiide and also phenylethanoids such as verbascoside (acetoside) found in Lamiales order.Due to the broad range of biological and pharmacological activities of verbascoside and lack of any report on quantification of this compound within Iranian species of Phlomis, we conducted a research to achieve two main goals, finding a genetic biodiversity by RAPD (Randomly Amplified Polymorphic DNA), as well as detecting and quantifying verbascoside in nine species of Phlomis growing wildly in Iran., Results: The results showed that various samples of P.olivieri possess different genetic distances from each other. Also, various species of P.olivieri display close relationships to P.anisodonta and P. persica. Phytoanalysis of Phlomis species by means of TLC scanner using verbascoside as a phytochemical marker showed that the highest concentration of verbascoside was found in P. anisodonta, however, P. bruguieri and P. olivieri (from Mazandaran) were in the second and third places. Interestingly, the lowest concentration of verbascoside was detected in P. olivieri (from Azerbayjan), exhibiting the effect of various growing areas and conditions on the measured levels of this compound., Conclusions: verbascoside can be found in various species of Iranian Phlomis, of which P. anisodonta, P. bruguieri and P. olivieri might be the best choices. In addition, although the concentration of verbascoside in these plants may be affected by the growing areas and conditions, there are a good agreement between genetic relations and verbascoside levels. more...
- Published
- 2014
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28. In vitro α-glucosidase inhibitory activity of phenolic constituents from aerial parts of Polygonum hyrcanicum.
- Author
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Moradi-Afrapoli F, Asghari B, Saeidnia S, Ajani Y, Mirjani M, Malmir M, Dolatabadi Bazaz R, Hadjiakhoondi A, Salehi P, Hamburger M, and Yassa N
- Abstract
Background and the Purpose of the Study: The early stage of diabetes mellitus type 2 is associated with postprandial hyperglycemia. Hyperglycemia is believed to increase the production of free radicals and reactive oxygen species, leading to oxidative tissue damage. In an effort of identifying herbal drugs which may become useful in the prevention or mitigation of diabetes, biochemical activities of Polygonum hyrcanicum and its constituents were studied., Methods: Hexane, ethylacetate and methanol extracts of P. hyrcanicum were tested for α-glucosidase inhibitory, antioxidant and radical scavenging properties. Active constituents were isolated and identified from the methanolic extract in an activity guided approach., Results: A methanolic extract from flowering aerial parts of the plant showed notable α-glucosidase inhibitory activity (IC50 = 15 μg/ml). Thirteen phenolic compounds involving a cinnamoylphenethyl amide, two flavans, and ten flavonols and flavonol 3-O-glycosides were subsequently isolated from the extract. All constituents showed inhibitory activities while compounds 3, 8 and 11 (IC50 = 0.3, 1.0, and 0.6 μM, respectively) were the most potent ones. The methanol extract also showed antioxidant activities in DPPH (IC50 = 76 μg/ml) and FRAP assays (1.4 mmol ferrous ion equivalent/g extract). A total phenol content of 130 mg/g of the extract was determined by Folin-Ciocalteu reagent., Conclusion: This study shows that P. hyrcanicum contains phenolic compounds with in vitro activity that can be useful in the context of preventing or mitigating cellular damages linked to diabetic conditions. more...
- Published
- 2012
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29. Flavones and Flavone Glycosides from Salvia macrosiphon Boiss.
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Gohari AR, Ebrahimi H, Saeidnia S, Foruzani M, Ebrahimi P, and Ajani Y
- Abstract
Salvia genus, which is generally called Maryam-Goli in the Persian language, belongs to Lamiaceae family and comprises 58 species in Iran. Four flavonoids plus a steroid compound were isolated from the ethyl acetate and methanol extracts of the aerial parts of Salvia macrosiphon Boiss, using different chromatographic methods on the silica gel and sephadex LH20. The structures of the isolated compounds were determined to be apigenin-7, 4'-dimethyl ether (1), β-sitosterol (2), salvigenin (3) apigenin-7-O-glucoside (4) and luteolin-7-O-glucoside (5) using the (1)H, (13)C-NMR and MS spectra in comparison with those reported in the literature. more...
- Published
- 2011
30. Flavones and rosmarinic acid from Salvia limbata.
- Author
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Gohari AR, Saeidnia S, Malmir M, Hadjiakhoondi A, and Ajani Y
- Subjects
- Chromatography, Gel, Cinnamates chemistry, Cinnamates isolation & purification, Depsides chemistry, Depsides isolation & purification, Flavones chemistry, Flavones isolation & purification, Flavonoids isolation & purification, Iran, Magnetic Resonance Spectroscopy, Molecular Structure, Plant Extracts chemistry, Plant Extracts isolation & purification, Rosmarinic Acid, Cinnamates analysis, Depsides analysis, Flavones analysis, Plant Components, Aerial chemistry, Plant Extracts analysis, Salvia chemistry
- Abstract
The genus Salvia (Lamiaceae) contains more than 50 shrub species in Iran, and Salvia limbata C.A. Meyer grows widely in the north and central parts of the country. Six flavones and rosmarinic acid were isolated from the ethyl acetate and methanol extracts of the flowered aerial parts of S. limbata collected from Semnan province. The separation process was carried out using several chromatographic methods. Structural elucidation was based on NMR data, in comparison with those reported in the literature. The isolated compounds were identified as ladanein (1), salvigenin (2), luteolin 7-methyl ether (3), cirsiliol (4), eupatorin (5), luteolin 7-O-glucoside (6) and rosmarinic acid (7). Some of these flavonoids have been reported to show antibacterial and cytotoxic activities. more...
- Published
- 2010
- Full Text
- View/download PDF
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