Search

Vitamin C is of great importance for the body, being necessary for the formation of blood vessels, cartilage, muscle, collagen and for the healing process, so its deficiency in the body, known as hypovitaminosis C, can cause problems such as anemia, bleeding gums, bruising and poor healing. Thus, the present work, through a bibliographic review of scientific articles found on digital platforms, seeks to talk about the role and use of ascorbic acid (AA); Talking about the history of vitamin C, its effects on tissue metabolism, as well as presenting the pharmacological application of vitamin C, addressing its effects on the body, emphasizing the importance of daily use of this vitamin and its benefits for human life and health, in order to inform society about the benefits linked to its use as well as to warn of the risks of lack of this vitamin. Taking into account what was observed, it was possible to perceive the importance of the need to maintain a healthy diet rich in vitamin C, since a deficient diet of this vitamin can cause tiredness, weakness, irritation while a more severe deficiency can cause scurvy. With this, it is essential to look for a competent professional so that he can make the diagnosis, and if it is necessary to use food supplementation of this vitamin via medication. [ABSTRACT FROM AUTHOR]

Pitayas belong to the Cactaceae family, with high economic potential due to their exotic appearance and nutritional and functional properties. Thus, it is essential to compare studies related to their physicochemical characteristics, in addition to demonstrating the innovation of food products based on their compounds. It is a narrative review on the properties of pitayas. We performed searches in databases such as SciELO, Oasisbr, and Google Scholar, and the descriptors were "pitaya" (pitaia), "characteristics of pitaya" (características da pitaia), "Hylocereus polyrhizus", "Hylocereus undatus", "Hylocereus costaricensis", "Selenicereus setaceus", and "Pitaya cultivation in Brazil" (cultivo da pitaia no Brasil). This work aimed to find different studies related to pH, soluble solids, titratable acidity, proteins, fibers, lipids, vitamin C, and minerals, in addition to bioactive compounds such as polyphenols, flavonoids, phenols, and pigments, which are the anthocyanins, betalains, and carotenoids. The physicochemical characteristics of pitayas are of great importance for their consumption and exploration of their compounds for new products. [ABSTRACT FROM AUTHOR]

This research aims to verify the effectiveness of the topical use of vitamin C as a preventive treatment in premature skin aging. This is an integrative literature review, using existing scientific articles as a source of data. To survey the articles, searches were carried out in the following databases: LILACS, Dialnet, Medline and Scielo, using the descriptors: ascorbic acid; vitamin C; antioxidant; free radicals and skin aging. The studies evaluated suggest that premature skin aging can be mitigated through the use of cosmetics that contain vitamin C in their composition, since its antioxidant action promotes deep hydration, making the skin bright, young and healthy, in addition to preventing and softening wrinkles. and expression lines, increasing skin elasticity and promoting collagen synthesis. [ABSTRACT FROM AUTHOR]

Background: Heat treatment is one of the most used methods to preserve food, such as orange juice, increasing its shelf life. However, little is known about the temperature and speed profiles during heat treatment of liquid food in commercial packaging. Aim: This work aimed to determine the vitamin C content and the convective heat transfer coefficient in the pasteurization of orange juice. Methods: Two tests were performed: in test 1, the heating started with a water bath at 22 ºC and was heated to 80 ºC. In test 2, the water bath started at 80 ºC. Results and Discussion: The convective heat transfer coefficient was analyzed in the wall region, and it is higher in test 2. In both tests, the curve graphic profile follows the same literature trend. Regarding vitamin C, in test 1, there was a reduction in it. In test 2, it remained constant. Conclusions: Studying the thermal behavior of orange juice is extremely important to ensure its quality. In order to avoid this degradation and reduce its loss, it is necessary that in thermal treatments, rapid heating is carried out and that the juice has low exposure to air and heat at the time of its preparation. [ABSTRACT FROM AUTHOR]

This work evaluates the physical and physicochemical parameters of the "Festival" strawberry variety, obtained under the edaphoclimatic conditions of Humpata, Province of Huila, Angola, followed by its transformation into sweet of adequate quality. The analyzes carried out were: the mass was determined on analytical balance and the transversal and longitudinal diameters with a caliper. Other analyzes were: total acidity titratable by volumetry, pH by potentiometry, total soluble solids by refractometry, moisture and ash by gravimetry. The study carried out showed that the pH of the pulp was 3.41; and in the sweet it was 3.31. The titratable acidity in the strawberry pulp was 0.186 g/100 ml and in the sweet 0.096 g/100 ml; the ascorbic acid content in the pulp was 18.60 mg/100g. The average content of soluble solids in the pulp was 9.51°Brix and for the sweet 68.83°Brix. These chemical characteristics of the pulp and the sweet provide information about their nutritional values. [ABSTRACT FROM AUTHOR]

The study aimed to describe the knowledge of the members of the Butia Palm Groves Network about the properties of butiá that are beneficial to health. It was a qualitative research, with a descriptive approach, with data collection in March and April of 2020. Semistructured interviews were applied to 20 key members of the Rota dos Butiazais. The interviews were applied in person to nine people (recorded and transcribed by the researcher) and via e-mail to 11 participants (due to the social distance, imposed by the pandemic of Covid-19). Thematic content analysis by Laurence Bardin and the theoretical framework of the Theory of Social Representations by Serge Moscovici were used. Participants reported on the antioxidant compounds, fibers, carotenes, vitamins and potassium present in the butiá pulp, stating that these compounds bring benefits for health. They also mentioned that butiá has a nutritional value, is rich in vitamin C, and that there may be properties that have not been studied. Each interviewee has a distinct personal and family history, but they converge on several points related to the knowledge related to the properties of butiá. The participants' reports demonstrate the social representations based on the butiá. [ABSTRACT FROM AUTHOR]

The research analyzed the production, commercialization and consumption of unconventional food plants (PANC) at fairs in São Luís (MA) and the chemical composition of the species Hibiscus sabdariffa L. (vinagreira) and Talinum paniculatum (Jacq.) Gaertn (joão-gome). Questionnaires were applied to three priority groups: marketers, consumers and producers, asking about their knowledge related to PANC, financial return, benefits, planting and frequency of consumption. The chemical parameters analyzed were protein, lipids, fibers, ashes, Brixº, pH, titratable acidity, vitamin C and reducing sugars following different methodologies. The results showed that in the commercial centers of São Luís, the PANC are commercialized and their benefits to health and income generation are recognized by the marketers, producers and consumers, mainly for the female gender. The main responsible for its planting and commercialization are women and the main consumers are adults and the elderly. In the vinagreira, an acidic flavor determined by high pH, titratable acidity and vitamin C was observed. The joão-gome showed little flavor, high content of Vitamin C, protein and fibers. The high protein and fiber content in both species shows the nutritional richness characteristic of PANC. Therefore, the chemical parameters of both species demonstrated the nutritional potential of these plants, justifying their wide use in cooking and traditional medicine in the region. [ABSTRACT FROM AUTHOR]

The production of jams with the addition of residues from fruit processing, such as peels and seeds, can reduce environmental impacts and nutritionally enrich the products. With a view to using the residues from the melon and mandacaru processing, as well as minimizing the postharvest losses of these fruits, the objective was to develop and characterize three formulations of cv. 'Orange Flesh', plus melon peel and mandacaru seeds. The jellies were characterized according to the physical-chemical parameters (pH, total titratable acidity, total sugars, reducing and non-reducing sugars, total soluble solids, water content, water and ash activity) and bioactive compounds (ascorbic acid, total phenolic compounds, total anthocyanins and total flavonoids). From the elaborated jellies it was observed that the formulation with the addition of the cooked melon peels (F3), was the one that obtained the highest levels of bioactive compounds, such as phenolic compounds 39.98 mg 100-1 g-1, however the formulations F2 (melon jelly with 1% mandacaru seeds) and F1 (melon jelly) obtained good results. The melon pulp, its peels and mandacaru seeds proved to be viable alternatives in the production of jams. The incorporation of mandacaru seeds and melon peels contributed to the functionality and attractiveness of the jellies and serves as an alternative for using waste. [ABSTRACT FROM AUTHOR]

Because it is a simple and low-cost process, natural drying, using solar energy and low-cost equipment, becomes a viable and accessible alternative for small rural producers. Guava is a climacteric and highly perishable fruit. The description of the drying process is extremely important to obtain good quality products. This work aimed to develop a low-cost, direct-exposure solar dryer prototype for guava dehydration, in addition to evaluating the efficiency of the process and the physical-chemical quality of the final product. The prototype was developed using alternative and lowcost materials. The efficiency of the process was evaluated through the drying kinetics and the temperature gain of the dryer. The raw material and the final product were evaluated for physical-chemical parameters and color. The drying process made it possible to dry the guava fruits within 15 hours, with an average temperature increase of 19.7°C. The Handerson and Pabis model was the one that best fit to predict the process. Solar drying led to a significant reduction in pH and water content. Regarding acidity and soluble solids content, a significant increase was observed after drying. Regarding vitamin C, there was an increase of about 500% in the concentration in relation to the content of fresh guava. [ABSTRACT FROM AUTHOR]

Citrus paradisi Macfad are an excellent source of nutrients and important phytochemicals for a healthy diet. In this context, the knowledge of the chemical composition of foods is fundamental to evaluate the nutrient contents and their health benefits. However, one of the problems related to the consumption of pomelo is the bitter taste that comes from the naringin present in the peel, making it important to develop a flour with a reduced content of bitter taste. The determinations were made in the peel, flavedo, and albedo, in the flour obtained by thermal processing of 48 hours, flour by thermal processing of 72 hours, flour processed and washed in cold water and crushed flour, washed in cold water and processed. To determine ascorbic acid, the titration method was used, and the other bioactives were determined by spectrophotometry. Aqueous, hydroacetonic, and ethanolic extracts were used to determine the total phenolic compounds, total tannins. Antioxidant activity was determined by the photocolorimetric method of the stable free radical DPPH. The flour with 72-hour thermal processing had decreased its concentration of bioactive, and the flour that has been obtained by the peel and albedo before being processed had the highest concentrations; thereof, highlighting discrepant increase of ascorbic acid relative to the other. The carotenoid content showed no significant differences between the samples. Among all treatments, the flour obtained by cold water processing, not being crushed before being processed, had reduced the bitterness of naringin. [ABSTRACT FROM AUTHOR]

The study of ionizing irradiation with Cobalt 60 (60Co), in this experiment, aimed to evaluate its influence on postharvest physical parameters for atemoia cv. ‘Thompson’, which are related to the fruit ripening process. The irradiation was carried out at the Radiation Technology Center - CTR IPEN / CNEN - SP, located in the university city USP (University of São Paulo) in the compact multi-purpose radiator where gamma rays are used. Atemias were irradiated with the following doses of cobalt 60 (60Co): T0 = No irradiation (control), T1 = 0.2kGy, T2 = 0.4kGy, T3 = 0.6kGy, T4 = 0.8kGy, T5 = 1,0kGy and T6 = 1,2kGy and then packed in expanded polystyrene trays (2 fruits / tray) and sealed with 0.020mm polyvinyl chloride films; exception made to the control treatment which did not receive irradiation; for each analysis parameter there were three repetitions with two fruits per repetition. The fruits under study were stored in a cold chamber at 15 ± 0.2ºC and 90 ± 2% RH. In all irradiation doses, the following analyzes were carried out: loss of fresh mass, soluble solids (SS), titratable acidity (AT), pH, ascorbic acid (AA), reducing sugars, respiratory rate. The analyzes were analyzed every three days (0,3,6,9,12,15 and 18) days of storage. The experiment was conducted in a completely randomized design (D.I.C.), in a factorial scheme (treatment x storage), composed of seven doses of gamma irradiation and seven storage times. The results were subjected to analysis of variance and the means compared by Tukey's test at the level of 5% probability and regression was performed for the analyzes in the storage period. This experiment can conclude that the doses of 1.0kGy and 1.2kGy demonstrate greater control of breathing, in atemoia, until the 9th day; three days more than the control treatment, the other parameters analyzed did not show any interference in the increase in postharvest life of the atemous cv ‘Thompson’. [ABSTRACT FROM AUTHOR]

Este trabajo tuvo como objetivo la caracterización físico-química de la naranja, variedad Baía, producida en Alto Hama, Angola. Además de la transformación de la fruta en gelatina, mediante un sencillo procedimiento y su caracterización físicoquímica. Trabajamos con 50 kg de fruta. Para la caracterización física se utilizó un calibre y una balanza analítica. En la caracterización físico-química se determinaron los sólidos solubles con un refractómetro. El contenido de ácidos ascórbicos y la acidez total se determinaron mediante titulación con 2,6-diclorofenolindofenol y solución de NaOH 0,1 mol/L respectivamente. La investigación mostró que la fruta se caracteriza por: pH de 3,62; acidez titulable 4,85 g / 100 ml; ácido ascórbico 104,7 mg / 100g y SST de 9,6 °Brix. La gelatina se caracterizó por: pH de 3,58; acidez titulable 0,475 g / 100 ml; ácido ascórbico 13,20 mg / 100g y SST 64,7 °Brix. [ABSTRACT FROM AUTHOR]

The application of technologies such as osmotic dehydration, promotes the reduction of product water in short periods and the improvement of its sensory characteristics. Once the influence of conditions on the efficiency of the osmotic dehydration process of fruits was observed, the objective of this study was to evaluate the effect of temperature and sucrose and xylitol concentrations on osmotic dehydration kinetics, and the effects of complementary microwave drying. on the physical and chemical characteristics of papaya slices. The response surface analysis method was applied through a complete 2? rotational factorial design with 4 axial points and 3 repetitions at the central point, totaling 11 experiments for each osmotic agent, with which it was possible to evaluate the effects of the agent concentration osmotic (sucrose or xylitol) and temperature, in the loss of water from the papaya slices It was found that the ideal condition for carrying out the process was the 50 °Brix concentration of the osmotic agent at a temperature of 30 °C. The slices submitted to osmotic dehydration in these conditions were dried in microwaves and evaluated for their physical and chemical characteristics. The use of xylitol as an osmotic agent was more efficient than sucrose, providing a greater reduction in water, significantly influencing the retention of vitamin C content after microwave drying and presenting a lower water content. [ABSTRACT FROM AUTHOR]

The processing of fresh fruits into derived products provides conservation and consumption outside the harvest period, however, it is important that these products reach the consumer market, attending to and guaranteeing their physical-chemical and functional quality. Thus, the objective of this work was to evaluate physicochemical characteristics and quantification of bioactive compounds in commercial samples of guava and banana sweets, and acerola and guava pulps. The products purchased were represented by four commercial brands, coming from the local markets of Pombal and Patos in Paraíba. Determinations of soluble solids, titratable acidity, pH, ratio, water content, fixed mineral residue, ascorbic acid, chlorophyll, carotenoids, flavonoids, anthocyanins and total extractable polyphenols were carried out. For ash content, sample A of guava jam stood out among the others, indicating a greater amount of inorganic residue. Samples A, B and C of guava jam and sample D of banana jam had the highest content of compounds phenolic. The sweet banana sample C showed the highest content of soluble solids. Acerola pulp sample D obtained the best result for ascorbic acid and phenolic compounds. For pH, only samples B, C and D of guava pulp are within the limits allowed by Brazilian legislation. [ABSTRACT FROM AUTHOR]

The fruits of guava (Psidium guajava L.) are highly appreciated not only for aroma and flavor, but also for nutritional value, being a rich source of vitamin C and can be consumed in natura or in their industrial forms. The objective of this work was to evaluate the performance of guava cultivars, its initial production and its fruit quality in irrigated and non-irrigated environments. Planting was carried out in February 2016, at 2.0 x 4.5 m spacing, with seedlings formed by cuttings from a commercial nursery. The plants were conducted in the espalier system, with regular prunings for fruiting. It was used a complete randomized block design in a 3 x 2 factorial arrangement, with three cultivars (Tailandesa, Século XXI and Pedro Sato) and two production environments (irrigated and non-irrigated). Productive variables (yield per plant and fruit mass) and qualitative variables (pH and total soluble solids content) were analyzed in the first two crop cycles. The yield and mass of fruits of evaluated cultivars were not affected by the additional irrigation of the plants. The irrigation has decreased the pH and the level of soluble solids content of the fruits. The 'Tailandesa' guava cultivar was the one that presented the best productive performance for cultivation in the region of Vera Cruz, SP. [ABSTRACT FROM AUTHOR]

The consumption of fresh fruit is increasing worldwide due to factors that lead to changes in people's eating habits, such as health care and nutritional aspects of food. The present work aimed to evaluate the quality, quantify the bioactive compounds and the antioxidant capacity of noni fruits in five maturation stages. The work was developed in the Laboratory of Technology of Products of Vegetable Origin of the Center of Sciences and Technology of Food of the Federal University of Campina Grande, in the Campus of Pombal - PB. The fruits came from plantations located in the city of Fortaleza - CE, being harvested directly in the canopy of the plant, taking the color of the bark as the harvest index. Physical, physical-chemical evaluations of bioactive compounds and antioxidant capacity in fruits were performed. The experimental design used was completely randomized (p>0.05). Physico-chemical characteristics of soluble solids, total soluble sugars, reducing sugars and SS / AT ratio, increased with advancing maturation. For bioactive compounds, the ascorbic acid content increased considerably with advancing maturation, as well as representative values for phenolic compounds. The fruits studied showed antioxidant properties, increasing the reducing power with ripening. It is concluded that the evaluated fruits presented considerable amounts of biologically active compounds, which can constitute a good source of natural antioxidants. [ABSTRACT FROM AUTHOR]

The article discusses the pharmacological and nutritional potential of Hancornia speciosa Gomes (Apocynaceae), a tree species found in the Brazilian Cerrado that is both fruitful and medicinal. The species is known for its healing, anti-inflammatory, and blood pressure control properties. Additionally, its fruits are economically exploited in the production of foods such as ice cream. Studies show that the species has antioxidant activity and is rich in vitamin C, vitamin B2, B3, carotenoids, calcium, iron, zinc, and phenolic compounds. Various compounds and pharmacological activities have also been identified, including anti-inflammatory, antimicrobial, gastroprotective, hypoglycemic, vasodilatory, hepatoprotective, antihypertensive, chemopreventive for cancer, antidiabetic, angiogenic, and healing properties. These results highlight the potential of Hancornia speciosa as a resource for the food and pharmaceutical industries. [Extracted from the article]

Among the plants used for man as source of food and remedy, Spondias dulcis Forst F. and Spondias purpurea L. can be found. Therefore, the aim of this study was to evaluate the antioxidant capacity of the bark ethanolic extracts of S. dulcis and S. purpurea in in vitro media. The evaluation was performed by the generation of hydroxyl reactive species (HO•), hydrogen peroxide (H2O2) and nitric oxide (NO•) and assessment of the percentage of scavenger of these species by the extracts, and by the measurement of the total antioxidant capacity, by the phosphomolibdenium assay. The extracts showed high ability to scavenge HO•and NO• radicals and H2O2, and high total antioxidant capacity when compared to ascorbic acid (vitamin C). The extracts also showed high concentrations of phenolioc acids in their composition. More studies are being accomplished in order to validate the therapeutic effects of these extracts. [ABSTRACT FROM AUTHOR]

The objective of this work was to evaluate the postharvest conservation of minimally processed kits of yakissoba (carrot, cauliflower, chard and chard), cabbage and leaf mix (crisp lettuce, purple lettuce and arugula) minimally processed stored at different temperatures. The kits were supplied by the Cooperativa Coper Planalto Sul, Curitibanos, SC and the analyzes carried out at the Instituto Federal Catarinenense (IFC), Campus Rio do Sul. Packages containing the products were submitted to storage at room temperature (23±2 °C and 65±5% relative humidity (RH) and refrigerated (5±1 °C and 10±1 °C and 90±5% RH) for 5, 7 and 14 days. Fresh Weight loss (FM) and the attributes of Soluble Solids (SS), Total Titratable Acidity (AT), SS/AT ratio, pH, vitamin C content and apparent wilting and darkening were evaluated after storage. The storage at room temperature showed greatest loss of fresh matter and apparent wilting and browning in all kits evaluated. However, for the yakissoba kit the FM losses did not differ from cold storage at 10 oC for 14 days. The storage promoted the increase of vitamin C content in all the analyzed vegetables. The contents of SS and the SS/AT ratio only showed difference in the yakissoba kit, with reduction of values in all treatments when compared to the control. The refrigeration promoted the maintenance of the visual quality, keeping the conservation for two weeks. [ABSTRACT FROM AUTHOR]

The research of fruit juice and nectars provides drinks with new flavors, attractive colors and textures, and high nutritional value for the beverage industries. This study aimed to evaluate the quality of pulps and nectars, develop blends of tropical fruits, and assess their physicochemical features and presence of bioactive compounds. The preparation of nectars comprised 30% pulp and 70% mineral water, using pulps of tamarind, pineapple, acerola, and passion fruit, which served as matrices for the preparation of seven blend formulations. The following physicochemical characteristics and bioactive compounds were analyzed: soluble solids (SS), titratable acidity (TA), pH, SS/TA ratio, ascorbic acid, chlorophyll, carotenoids, anthocyanins, flavonoids, and total extractable polyphenols. All pulps, nectars, and blends had a pH below 4.5. The acerola pulp and nectar presented the highest ascorbic acid, chlorophyll, anthocyanin, and extractable polyphenol contents. The blend in Formulation 7 (30% tamarind + 20% pineapple + 25% acerola + 25% passion fruit) had the highest titratable acidity, ascorbic acid, anthocyanins, flavonoids, and carotenoids. Formulation 4 (30% tamarind + 30% pineapple + 30% acerola + 10% passion fruit) showed the highest content of total extractable polyphenols. [ABSTRACT FROM AUTHOR]

Brazil has a high production of oranges, having the same technological potential of use, especially in the application in juices. The beverage industries are betting on the diversification of their product line, and orange nectar is a beverage option, attractive to consumers because of the high nutrient content. However, nectar differs greatly from other orange drinks, so it is necessary to know its nutritional composition and physical and chemical characteristics. The objective of the study was to analyze an orange-based industrialized nectar, evaluating physical and chemical properties and their nutritional composition. For this purpose, the levels of moisture, acidity, pH, water activity, soluble solids, carbohydrates, starch, proteins, lipids, fixed mineral residue, vitamin C and energy were determined. The results were presented by the mean and standard deviation of three replicates. The results obtained showed that orange nectar presents a good amount of nutrients and vitamins; in addition, its physical and chemical characteristics are similar to other studies, indicating that the present analyzed nectar is in compliance and suitable for consumption. [ABSTRACT FROM AUTHOR]

The use of fruits in the development of products aims to insert in the market foods with a greater contribution of nutrients, thus stimulating, healthier life habits. The Cerrado fruits have great economic and nutritional potential, however, it is necessary to search for alternatives for a better use and conservation of these fruits. The objective of this work was to characterize the chemical composition of bocaiuva jelly (Acrocomia aculeata) and passion fruit (Passiflora edulis), using soluble solids, titratable acidity, pH, Aw, total solids, total phenols, antioxidant activity, tannins, carotenoids and ascorbic acid. The pulp of bocaiuva used in the elaboration of the jelly was also characterized due to the different morphotypes found in the State of Mato Grosso do Sul. The jelly of bocaiuva with passion fruit presents 106,01 mg g-1 of total phenols, 466,55 g g- 1 DPPH, 4.94 mg 100g-1 tannins, 11.44 mg 100g-1 carotenoids. The bocaiuva pulp shows 240.8 mg g -1 total phenols, 261.14 g g -1 DPPH, 10.66 mg 100 g -1 tannins and 58.29 mg 100 g -1 carotenoids. The bocaiuva jelly with passion fruit retained the compounds considered bioactive in their composition, derived from the pulp of bocaiuva and passion fruit. [ABSTRACT FROM AUTHOR]

Objective: to assess the nutritional status and food consumption of the main sources of macro and micronutrients ingested by preschool children. Method: This is an exploratory-descriptive, cross-sectional with a quantitative approach study, composed of 269 children of both sexes aged between 3 and 5 years of child municipal education centers in the city of Montes Claros, Minas Gerais. A food survey and anthropometric evaluation were carried out in the school environment, with the authorization of parents and/or guardians. Results: It appears that most of the children are eutrophic according to all the evaluated criteria. In the investigation of food, only the consumption of calories and iron was appropriate for the age range. Among the macronutrients, the consumption of carbohydrates, lipids and proteins was above the recommended value. Among the micronutrients, an increased consumption of zinc, sodium and vitamin C was observed. However, the intake of micronutrients such as calcium, magnesium, vitamins A, D and E was below the recommended levels, as well as the fibers consumption. Conclusion: It is observed that the nutritional status of children is appropriate, but there is inadequate food intake. This factor may contribute to the increase in overweight and obesity and may also be associated with nutritional deficiencies. [ABSTRACT FROM AUTHOR]

Natural juices have been largely replaced by solid refreshments (SR), which can result in nutrient loss of important components, such as ascorbic acid (AA). Thus, this study aimed to analyze the AA content, determine the titratable total acidity and pH in samples of pineapple - flavored SR marketed in the retail markets of Campo Grande-MS and, in addition, characterize AA used as Reference Chemical Substance. Ten samples of pineapple - flavored SR were analyzed using the modified Tillmans method, and all presented AA content above the minimum required in the recommended dietary dose, meeting the requirements of RDC 360/2003. However, 50% of the samples presented AA content above the maximum allowed limit of 20% for more or less as stated on the label. The study confirmed that the use of SR is a good dietary option to achieve the necessary daily dose of AA at a low cost. [ABSTRACT FROM AUTHOR]

The native fruits have receiving special attention, not only for their in natura use but also in the processed form. The objective of this work was to evaluated the physicochemical attributes soluble solids (SS), titratable acidity (AT), SS/AT ratio, pH and vitamin C contents in açaí (Euterpe edulis), yellow and red araçá (Psidium cattleianum), butiá (Butia capitata), guabiroba (Campomanesia xanthocarpa), jabuticaba (Plinia cauliflora) and pitanga (Eugenia uniflora) fruits at harvested. The fruits were processed and analyzes in the Laboratory of Physiology and Postharvest of the Instituto Federal Catarinense (IFC) of Rio do Sul. The levels of AT were obtained by titrations, the SS by digital refractometry, the ratio (SS/AT) was calculated by dividing the SS by AT, the pH was determined with a pHmeter in juice extracted from the fruits and the vitamin C content by the spectrophotometric method, using 2,4-denitrophenylhydrazine. Fruits of guabiroba, açaí, butiá and jabuticaba presented the highest values of AT and, together with pitanga, the highest values of SS average contents of 1.40% and 9.05%, respectively. The highest pH were observed in jabuticaba and the lowest in butiá and pitanga. The mean content of vitamin C was 56.14 mg 100g-1 of fresh matter (MF), indicating that all fruits studied are important sources of this vitamin, especially pitanga, with 76.59 mg 100g-1 of MF. The fruits present physicochemical characteristics suitable for in natura and processed form consumption. [ABSTRACT FROM AUTHOR]

Camu-camu (Myrciaria dubia) is a fruit species native to the Amazon and its economic importance is proven because the fruit contains high content of ascorbic acid. The objective of this work was to evaluate the germination and vigor of seedlings obtained from seeds of different sizes of two camu-camu populations. The experimental design was completely randomized in a factorial scheme of 2 x 3 (two provenances river Anauá and river Urubu and three seed sizes, small, medium and large) with 5 replicates of 20 seeds per plot. The seeds of the origin of the Anauá river presented higher mass (1.46 g) compared to the origin of the Urubu river (0.78 g). The speed and emergence of seed germination presented better values for the population of the Anauá river, justifying the adoption of choice of origin for the formation of seedlings. For root length, dry shoot mass and dry mass of the root system, the seeds classified as medium and large originated from the Anauá river presented higher values. The size of the seeds is an important character to be used in the production of Myrciaria dubia seedlings. The seeds of the origin of the Anauá river are potentially more vigorous are indicate for the production of camu-camu (Myrciaria dubia) seedlings. [ABSTRACT FROM AUTHOR]

The objective was to provide information on the technological and nutritional aspects of the fruits of Quipá in order to seek applications for the same in human nutrition. The Quipá is a plant native to the Northeast, its fruit, unlike the fig-of- India is not valued. The fruits were harvested, packaged and taken to the Food Analysis Laboratory, CCTA / UFCG, Pombal- PB. They were then divided into four batches and subjected to extraction of the pulp. the physical, physico-chemical and chemical of the fruits of Quipá were evaluated. The fruits are small, the shell is more than half the weight of the fruit and seeds hinder the acceptability of fruit by the consumer. The pulp makes up just over 20% of the fruit weight, has an acidic pH, wit h low concentration of citric acid soluble solids and lower the fruit of fig-of-India and mandacaru common to semiarid; concentrations of vitamin C and phenolic compounds were considered significant, which did not occur with the flavonoids and anthocyanins, which were present in low concentrations. [ABSTRACT FROM AUTHOR]

Orange Kinkan (Fortunella margarita), popularly known as "golden orange", is originally from Asia and belongs to the genus Fortunella. Kinkan orange has some characteristics of citrus fruits, which are the most consumed fruits by the Brazilian population. Objective: The study aimed to evaluate the chemical characterization of kinkan orange by comparing the results obtained with the published data on the analysis of some citrus fruits of great commercial interest in Brazil, such as serra-d'água orange, pera-rio orange, poncã tangerine and tahiti lemon. Methodology: We evaluated pH, soluble solids, titratable acidity, content of vitamin C, total phenolics and antioxidant capacity. All tests were performed in triplicate and data were compared by Tukey test (p <0,05). Results: Kinkan orange had the highest content of soluble solids (SS) and low titratable acidity (TA), consequently high SS / TA ratio, high vitamin C content and the highest content of total phenolics compared to other fruits. Conclusion: Kinkan orange has chemical characteristics similar to other citrus fruits such as pH, titratable acidity and content of vitamin C, has excellent palatability and can be considered as a source of total phenolic and vitamin C in the diet. [ABSTRACT FROM AUTHOR]

The prescription compounding formulations has increased exponentially in the last years, in equal proportion occurred to concerns about the quality and stability of the final products .Vitamin C is known to be an unstable product , hence it is necessary a thorough quality control over it .The objective of this study was to evaluate the stability of creme-gels containing a Vitamin C with OR without the use of preservatives in different temperatures and packaging .The Analysis of samples occurred at zero time , 30, 60 and 90 days and it was observed that none of the samples showed a change under refrigeration and most stable samples in 90 days were those that contained the preservative Sodium Metabisulfite packaged in aluminum tubes . Therefore this work showed that for this samples containing Vitamin C the ideal preservative is Sodium Metabisulfite and the packaging of choice should be coated with aluminum and kept under refrigeration. Lastly it has been concluded that as important as following good manufacturing practices, is the correct choice of stabilizers and packaging for the formulations' stowage. [ABSTRACT FROM AUTHOR]

The objective of this research was to determine the concentration of carotenoids, vitamin C, polyphenols and antioxidant activity of improved varieties of papaya. Four improved varieties from Solo group (L60, L47-05, L47-08 and H54.78), two from Formosa group (L33 and H36.45) and commercial varieties Tainungn.1 and Sunrise Solo were evaluated. Among the Solo group varieties, L47-08 showed high levels of carotenoids and Sunrise Solo the highest content of vitamin C. Among the Formosa group varieties, H36.45 and L33 showed high levels of vitamin C and total polyphenols, as well as higher antioxidant activity. Total polyphenols and vitamin C were significantly correlated with the antioxidant activity of papayas evaluated. [ABSTRACT FROM AUTHOR]

Objetivo: avaliar o efeito clínico de tratamento tópico com mel de Ulmo associado à administração oral de ácido ascórbico em pacientes portadores de úlceras venosas. Método: estudo quantitativo descritivo longitudinal. Um total de 18 pacientes adultos, ambos os sexos, clinicamente diagnosticados com úlcera venosa em diferentes estágios e com duração de 13 meses em média, foram avaliados pelo período de um ano. A aplicação tópica diária de mel de Ulmo foi realizada de acordo com a norma técnica de tratamento avançado combinada com o consumo diário de 500 mg de ácido ascórbico. O instrumento usado para monitoramento foi a tabela de avaliação de úlceras venosas. Resultados: cicatrização completa foi observada em 100% das úlceras venosas. Não foram observados sinais de complicação tais como alergias ou infecção. Conclusão: o tratamento proposto apresentou resultados clínicos excelentes na cicatrização das úlceras venosas. Além de favorecer o debridamento, o mel não é aderente, é fácil de aplicar e remover, e é de fácil aceitação por parte dos usuários. Os resultados descritos geraram uma linha investigativa no tratamento de feridas crônicas. [ABSTRACT FROM AUTHOR]

This work was a review of scientific data on the benefits of vitamin C in its antioxidant activity. Basing its use in situations where excess production of free radicals production of antioxidants, making necessary an exogenous supplementation. Knowing that these free radicals are highly reactive and oxidation, causing chronic or irreversible cell and tissue damage, antioxidants such as vitamin C, act directly preventing, delaying, and preventing oxidation damage free radicals may cause, providing more quality of life, prevention of various diseases such as premature aging and cardiopatologias, ensuring its effectiveness and its officers conferring advantages on a healthy lifestyle. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate the postharvest camu-camu by using cooling and modified atmosphere propitiated by the films of polyvinyl chloride (PVC) biaxially oriented polypropylene of 50μm thickness (BOPP50) to evaluate the durability the control (without packaging). The fruits were kept at 5±1°C and 90±2% relative humidity for 25 days and evaluated every four days of storage regarding firmness, pH, soluble solids, titratable acidity, vitamin C, anthocyanins, weight loss and CO2 concentration of the atmosphere inside the package. The BOPP50 film showed not be the best alternative for the conservation of camu-camu, because its low permeability to gases caused the accumulation of CO2 inside the package, allowing the fermentation of fruits after 13 days of refrigerated storage. Characteristics of pH, soluble solids, titrable acidity, vitamin C and anthocyanins were not affected by the types of films used, but through the days of storage. The results showed that the use of PVC film with cooling to postharvest camu-camu, was effective to maintain the firmness and reduction in weight loss by keeping the fruit commercially viable for 21 days, while control coated BOPP50 was unviable with 13 days of storage. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate physical and chemical characteristics of fruits of 13 peach cultivars with yellow flesh introduced in the experimental orchard of the Federal University of Viçosa (UFV), Viçosa-MG. The experiment was conducted during the 2011 season, in a completely randomized design with 13 treatments (cultivars), three replicates of 10 fruits per plot. The fruits of cultivars 'Cerrito', 'Minasul' and 'Olímpia' had , in general, higher fruit weight and diameter. The fruits of cultivars 'Belvedere', 'Coral', 'Rubimel' and 'Talismã' had a better balance between acidity and soluble solids. Higher levels of vitamin C and carotenoids were found in the fruits of cultivars 'Baronesa' and 'Flordaprince' and of 'Aldrigui' and 'Elberta', respectively. [ABSTRACT FROM AUTHOR]

In soil laboratory testing, the acid 1-amino-2- naphthol-4-sulfonic (ANS) is used as reducing agent to determine P by UV/Visible spectrometry. However, there are risks to laboratory technician healthy and an alternative is the use of ascorbic acid (AA). But, changes in the analytical protocol may induce variations in results, been necessary to standardize and calibrate. The objective of this study was to evaluate the ANS and AA in extracts of Mehlich-1 and 3 in ranges 15, 30, 45, 60 and 120min of reaction. There was no difference in P concentration determined by both reducers when compared within each extractor. Ascorbic acid can substitute the ANS solution for P determination and the suggested reaction interval for colorimetric quantification is between 30 and 60min for both substances. [ABSTRACT FROM AUTHOR]

The type of drying and packaging are two essential factors in the study of dehydration and preservation of fruits, respectively. The objective was study the storage of surinam cherry powder produced by foam mat drying and packaged in flexible packing (PET/PP). The powder samples were obtained by pulp dehydration in an oven with circulating air (0.5 m s-1) in the temperature of 70 &#8451. The surinam cherry powder was wrapped in flexible packing and stored at room temperature and relative humidity for 60 days. During the storage was evaluated the stability of powder through the monitoring every 10 days the moisture content, ascorbic acid, pH, titratable acidity, reducing sugars, non reducing sugars, total sugars and color parameters (brightness, redness and yellowness). Only the non-reducing sugars did not differ significantly with the storage time. The results indicated that the powder has changed in most of the properties, but the ascorbic acid content, moisture content, total acidity and total sugars varied little over the 60 days. [ABSTRACT FROM AUTHOR]

Accelerated stability tests provide conditions of fast aging to cosmetic formulations and may evaluate the physical, physical-chemical, chemical and functional stability profile. Vitamin C is one of the most common in topic products for skin care. However, the topic administration of Vitamin C has a low efficiency due to its instability. Current research evaluates the accelerated stability of different formulations with Vitamin C to investigate the efficiency of antioxidants and establish conditioning and storage conditions. Three gel types were dispensed for antioxidants: Gel 1 contained only EDTA; Gel 2 contained sodium metabisulfate; Gel 3 contained the two antioxidants. Gels were then conditioned in plastic and aluminum tubes and stored at 5ºC, room temperature and 40ºC. Samples were analyzed with regard to consistence, organoleptic characteristics, pH and Vitamin C rates on 0, 30, 60 and 90 days. The most stable samples during 90 days were those with the two antioxidants, in aluminum tubes, and stored at 5ºC. Since Vitamin C is highly unstable in formulations, particularly in gels, results demand certain care by the dispenser, such as the use of the synergic antioxidant system with sodium metabisulfate and EDTA, conditioning in aluminum tubes and storing at 5ºC (fridge) should be written as a note on the label. [ABSTRACT FROM AUTHOR]

The growing public interest in health- promotion, has called the attention of consumers for foods rich in antioxidants, combined with the practicality of the consumption of processed fruit juices. Therefore, this study aimed to quantify and evaluate the antioxidant capacity of phenolic compounds and ascorbic acid in fruits "in natura" and frozen pulps. The fruits "in natura" and frozen pulps from region of Lavras-MG, underwent quantification of phenolic compounds, ascorbic acid and the corresponding extracts acetonic-ethanolic and acetonic-methanolic. Their antioxidant activities were evaluated by DPPH and ABTS radical methods. The extract acetonic-methanolic was more effective to extract the antioxidant compounds from samples. Only frozen acerola pulps showed lower content of phenolic compounds in relation to fruit. For ascorbic acid, there was a reduction in the frozen pulp of acerola and guava. Acerola samples showed higher content of phenolic compounds, ascorbic acid and antioxidant activity compared to other fruits analyzed. [ABSTRACT FROM AUTHOR]

The atemoya is a hybrid fruit derived from the cross between the sugar apple (fruta-do-conde), better known as ata (Annona squamosa L.) with the cherimoya (Annona cherimola Mill.). The aim of this research was to characterize the chemical constituents of the fractions skin, pulp and seed of the hybrid fruit atemoya, variety Gefner. The fruits purchased and selected were weighed and measured. They were separated into skin, pulp, seed and floral axis which were also weighted to determine their proportions. For the rest of the fruits, the fractions were separated into 7 replicates of 13 fruits. Then, the fractions skin, pulp and seeds were freeze-dried and stored in freezer. The proportion of the fruit fractions, the centesimal composition, ascorbic acid, total sugars, minerals and some bioactive compounds were determined. The pulp represented about 60% of the fruit weight, while the skin 28.13% and the seeds 8.34%. The fruit presented on the average 56 seeds, with longitudinal diameter of 10.79 cm and transversal diameter of 26.64 cm. The largest contents of crude protein, ether extract and dietary fiber were found in both seeds and skin. The skin stood out in the ash contents. The pulp showed the highest contents of ascorbic acid and total sugars in relation to the other fractions. The order of the composition of macronutrients in the skin, pulp and seeds of the atemoya was K>P>Ca>Mg; for the skin and seed micronutrients were Fe>Zn>Cu>Mn>S and in the pulp were Fe>Zn>Mn>Cu>S. The skin presented the highest levels of trypsin inhibitors and hemagglutinating activity. The phenolic compounds were relatively low in the fruit. [ABSTRACT FROM AUTHOR]

Five pineapple genotypes (Gold, Pérola, Smooth Cayenne, BRS Vitória and BRS Imperial and four new hybrids - SC × PRI-21, SC48 × PRI-02, PE × SC-73 and PA × PE-01), were evaluated for their physicochemical characteristics. The 'Gold' cultivar presented the highest contents of total carotenoids (7.82mg g-1) and vitamin C (51.0mg 100g-1), whereas the 'BRS' Imperial stood out for its high levels of reducing (5.12%) and total (15.23%) sugars, soluble solids (18.41°Brix), pH (3.96) and ratio (35.28). Improved hybrids SC 48 × PRI-02, PE × SC- 73 and PA × PE-01 had the soluble solids, reducing and total sugars contents higher than those of cultivars 'Smooth Cayenne', BRS Vitória' and 'Pérola', highlighting the 'PE × SC- 73' hybrid for its pulp of intense yellow color, high sweetness, high content of total carotenoids and vitamin C and which was considered as a promising hybrid to replace commercial cultivars. [ABSTRACT FROM AUTHOR]

The objective of this paper was to carry out the physical and chemical characterization of mango Uba access in the Zona da Mata of Minas Gerais, to identify materials of industrial interest. Physiologically mature fruits were harvested and transported to the Laboratory of Analysis of Fruit of the UFV, where they were washed, treated with fungicide Prochloraz (Sportak 450 EC, Hoechst Schering AgrEvo UK Ltd., England) at a dose of 49.5g 100L-1 water, for 10 minutes and air dried. After that, they were treated with Ethephon 2-chloroethyl phosphonic acid (Ethrel 240g of ethephon L-1, Rhone-Poulenc Agro Brazil Ltda) at a concentration of 1g ai L-1 together with adhesive spread Adesil (760g ai L-1 Chemical and Pharmaceutical Nufarm SA) at a concentration of 20mL 100L-1 for 5 minutes and air dried. They were then stored at 20±1°C and relative humidity of 90% until ripening. The fruit also present best characteristics for the industrial processing requests are from 7, 11, 16, 17, 21, 26, 28, 47, 48, 53, 54 and 56. The fruit weight, firmness, soluble solids and ascorbic acid are the characteristics that had increased variability in access of Uba mango. The genetic variability of the Uba mango tree, in Visconde do Rio Branco, provides material for future breeding projects and deployment of germplasm collection. [ABSTRACT FROM AUTHOR]

This research aimed to study the kinetic of whole mango juice cv. 'Ubá' degradation using accelerated assays and estimate its shelf-life at 25°C. The products were stored in BOD incubator at 25°C (control), 35°C and 45°C (accelerated conditions), provided with 24 hours a day 650lux lighting. Physico-chemical properties that most influenced the quality of the product were the color coordinates (L* and ∆E*) and the vitamin C content. It was found that zero order kinetic model was the best fit to variations in the values of L* and ∆E*, which showed browning of products stored under higher temperatures. There were significant correlations between changes in vitamin C content and changes in values of L* and ∆E*, suggesting that the degradation of this vitamin contributed to darkening of the product. Shelf-life of 190 days was estimated for whole mango juice stored at 25°C, using vitamin C content as the limiting quality. [ABSTRACT FROM AUTHOR]

This study aimed to evaluate the effects of adding different concentrations of the leaf additives nandrolone decanoate, ascorbic acid, retinol palmitate and retinol acetate on biological parameters of Bombyx mori larvae. The results showed that nandrolone and ascorbic acid, both at 0.5%, provide the best value for the development of the larvae of B. mori, values which do not correspond to significant increases in cocoon and silk production; 1.0% of retinol palmitate show negative effect to larvae development. [ABSTRACT FROM AUTHOR]

Objectives: to draw a comparison between obese and eutrophic children regarding cardiac autonomic modulation and to investigate the effect of vitamin C supplements on cardiac autonomic modulation in obese children, at rest and during isometric exercise. Methods: the study covered eight eutrophic (IMC= 18 ± 1Kg/cm2) and 21 obese (IMC = 29 ± 1Kg/cm2) children aged between 8 and 11 years of both sexes, distributed into two groups: one receiving a 500 mg vitamin C supplement (n= 11), and the other a placebo (n10), for 45 days. Cardiac autonomic modulation was evaluated by way of spectral analysis of the variability of cardiac frequency at rest and during isometric exercise. Results: obese children, at rest and during isometric exercise, presented a higher degree of sympathetic cardiac activation and less vagal activity. Comparison of the lowand high-frequency spectral components of the two groups revealed significant differences. After the use of vitamin C supplements, the spectral components were similar to those found in eutrophic children, both at rest and during isometric exercise. Conclusions: obese children showed greater sympathetic activity and less vagal activity at rest and during isometric exercise compared to eutrophic children. The use of high doses of oral vitamin C supplements may correct the cardiac autonomic dysfunction in obese children. [ABSTRACT FROM AUTHOR]

In the context of recommended foods to reduce the risk of developing diseases and to improve the quality of life, are the fruits and their derivatives. This study aimed to develop a mixed juice of mango, guava and acerola, with acceptability sensory, using experimental blending to determine the optimal proportions of pulps. In each treatment, these proportions have been defined determined according to a design blending simplex increased by 10 treatments. Were performed physicochemical analyses such as: pH, soluble solids (ºBrix), acidity, vitamin C content and sensory analysis. Based on the results, it was found that all the formulations derived from mango, guava and acerola were accepted by consumers. The pulp of guava and mango should participate in a greater proportion of the mix, since they promote acceptance. The pulp of acerola, even in a smaller proportion, contributed to the increase in content of vitamin C. [ABSTRACT FROM AUTHOR]

This research was carried out aiming to evaluate the quality of pequi fruit (whole and sliced) after forced-air freezing storage during 12 months. The fruits were submitted to treatments as follows: selecting, washing, sanitizing, peeling, blanching, cooling, and slicing or not. After that, the fruits were storage using low density polyethylene bags and submitted to forced-air freezing (-18°C) for 6 hours and stored in freezer at the same temperature (±2ºC) for 12 months. Each three months were measured: pH, titratable acidity, soluble solids, firmness, color (L*, a*, b*, ho and C* values), total carotenoids, -carotene, vitamin C, peroxide value, coliforms at 35oC and 45°C and Salmonella sp. Frozen whole pequi fruits is more effective in preserving the soluble solids and vitamin C contents and L* and b* values as compared to the sliced pequi fruits. The freezing-storage time reduce a*, b* and C* values, firmness values, soluble solids, total carotenoids, -carotene and vitamin C contents of the pequi fruit, whole or sliced. Pequi fruit frozen is not affected by rancidity oxidative process, and also does not alter the pH, titratable acidity, and color (h°). Pequi fruit frozen and stored during 12 months are considered microbiologically safe, not offering health risks to consumers, since that the good practices of manufacture are realized and the freezing and stored process are performed correctly. [ABSTRACT FROM AUTHOR]

The objective of this work was to evaluate the influence of vitamin C on hematology parameters of goldfish (Carassius auratus). A total of 80 young goldfish were used for the experiment, distributed in 10 tanks with 0.20 m³ each, installed in a circular masonry tank with 25 m³ capacity. The experimental design was completely randomized with five treatments and two replicas, each tank containing eight fishes, with initial average weight of 20.36 ± 0.30 g and 11.37 ± 0.98 cm of length, fed four times a day. The diets were composed of 32% of crude protein and 3200 kcal kg-1 of digestible energy. The mineral and vitamin supplements were prepared in order to obtain concentrations of 0 (control), 250, 500, 1000, 2000 mg of vitamin C kg-1 of ration. For blood collection, the fish were anesthetized with benzocaine (75 mg L-1). We analyzed the following parameters: hemoglobin tax, percentage of hematocrit, erythrocytes count, hematrimetrics index, total leucocytes count, trombocytes and differential leucocytes analyses. It was found that the vitamin C levels in diets does not affect the hematological parameters. [ABSTRACT FROM AUTHOR]

The enzymatic browning and firmness loss are the major changes that could affect fresh-cut peaches. The objective was to evaluate the application of L-cysteine (Cis), L-ascorbic acid (AA) and calcium chloride (CC) in the control of browning enzymatic and loss of firmness of minimally processed dried peaches, cv. 'Esmeralda'. The fruits were processed industrially and, after slicing, immersed in treatments: (I) water (control); (II) AA+CC; (III) Cis+CC and (IV) Cis+AA+CC. After, the slices were packed in packages sealed with PVC film 30μm thick and stored for six days at 4±1°C and 85±3% UR. The samples were evaluated for their physical-chemical, enzymatic and sensory aspects every two days. Treatment Cis+AA+CC resulted in higher values of L* and h°, which indicates that it was the most effective in browning prevention. Treatments with L-cysteine resulted in lower activity of polyphenoloxidase (PPO) and treatment Cis+AA+CC was the most effective in containing peroxidase (POD) activity, indicating that the best performance for such treatment is associated with lower activity of PPO and POD. The sensory evaluation indicated that the treatment Cis+AA+CC was the most efficient, providing the maintenance of the sensory characteristics acceptable for fresh-cut peaches, cv. 'Esmeralda'. [ABSTRACT FROM AUTHOR]

In Brazil many kinds of native palms can provide hearth palm of good quality and among them stands out the guarirobeira (Syagrus oleracea (Mart.) J. Becc.), which has different flavor and great acceptance in the Cerrado region. The objective of this research was to determine the characteristics of guariroba palm heart, with relationship to the moisture, ash, total lipids, proteins, reducer and no-reducer sugars, acidity, ascorbic acid, total phenol, pH, total fiber and iron, phosphorus, calcium, sodium and potassium minerals. It was also verified the effect of processing (blanching, acidification and freezing) in the frozen product. Significant differences (P<0.05) was noted among average values found in frozen and raw samples, with contents (g 100g-1) respectively, for moisture, of 87.68 and 90.56; ash, 0.96 and 0.73; and lipids, 0.44 and 0.24; besides the occurrence of decreasing energy value from 11.64 to 9.97kcal 100g-1 in the integral sample. The citric acid use in the processing of guariroba palm heart decreased the pH of 5.8 to 4.5, and was efficient for avoid browning. The guariroba palm heart still be a good source of e fiber and total phenol after freezing, in addition to offer high contents of vitamin C and iron mineral. [ABSTRACT FROM AUTHOR]

The objective of this research was to determine the concentration of polyphenols, flavonols, vitamin C and carotenoid and in 61 banana accessions from Musa germplasm collection from Embrapa Cassava and Fruits, Brazil. Was detected significant differences for all characteristic analyzed in ANOVA. The average for polyphenols among the 61 accessions was of 38.06mg 100g-1, with variation of 12.51mg 100g-1 for the triploid 'Torp' to 257.80mg 100g-1 for the tetraploid 'Teparod'. The average for flavonols was of 2.09mg 100g-1, ranging of 0.85mg 100g-1 ('Maravilha' AAAB) to 6.63mg 100g-1 ('Teparod' ABBB). The average for vitamin C was of 21.60mg 100g-1, ranging of 8.60mg 100g-1 (tetraploid 'Bucaneiro') to 76.82mg 100g-1 (tetraploid 'Teparod'). The average of the total carotenoids was of 4.34g g-1, ranging of 1.18g g-1 ('Champa Madras', triploid ABB) to 19.24g g-1 ('Saney', triploid AAB). Diploids Modok Gier and NBA-14 exhibited 4- and 5-fold increased carotenoid content in comparison to the representatives from the Cavendish group ('Nanica', 'Willians' and 'Lacatan'). These results allow ending about the possibility of the obtaining new cultivars with high levels of functional compositions through crossings and selection. Cultivar with this profile has potential of neutralizing free radicals and to prevent diseases. [ABSTRACT FROM AUTHOR]