Nutritional composition of tamarind (Tamarindus indica L.) from the cerrado of Minas Gerais, Brazil.
CAGAITA NECTAR (Eugenia dysenterica DC.): DEVELOPMENT, MICROBIOLOGICAL, SENSORY AND CHEMICAL CHARACTERIZATION, AND STABILITY STUDYThis study aimed to develop cagaita nectar (Eugenia dysenterica DC.) and characterize them regarding microbiological, sensory, and chemical parameters, and product stability during the storage. Four formulations of nectar containing 20, 30, 40 and 50% of pulp were developed and evaluated microbiologically (total and thermotolerant coliforms, molds, yeasts and Salmonella spp) and sensory (acceptance testing). The most accepted formulation was investigated for the content of soluble solids (SS), pH, titratable acidity (TA), relation SS/TA, moisture, protein, lipids, carbohydrates, total dietary fi ber (TDF), ash, carotenoids and ascorbic acid (AA), and stability while stored under freezing (-18°C/90 days) and refrigeration (5°C/72 hours). It was observed an absence of microorganisms in the four formulations examined. The formulations with 40 and 50% of pulp presented greater acceptance of color, fl avor and overall impression. The nectar containing 50% of pulp presented SS of 11.43 ºBrix, pH 3.59 and relation SS/TA of 19.37. In 100 g was found TA of 0.59 g of citric acid, 85.75 g of moisture, 0.29 g of protein, 0.27 g of lipids, 12.93 g of carbohydrates, 0.68 g of TDF, 0.08 g of ash, 55.31 kcal, 0.25 mg of carotenoids and 19.6 mg of AA. During storage, there were no statistically signifi cant changes in the values of SS, TA, pH, carotenoids and AA. The cagaita nectar attended to the chemical and the microbiological standards established by the Brazilian law, and has reached a good acceptance of consumers, and showed excellent stability during storage. KEY-WORDS: CAGAITA; Eugenia dysenterica; NECTAR; SENSORY ANALYSIS. REFERÊNCIAS 1 ALMEIDA, S.P.; PROENÇA, C.E.B.; SANO, S.M.; RIBEIRO, J.F. Cerrado: espécies vegetais úteis. Planaltina: EMBRAPA-CPAC, 1998. 464 p.
-Introduction. The Brazilian Savannah has one of the richest biodiversities in the world and contains native fruits presenting high nutritional value. These fruits are the basis for sustaining wildlife and also serve as a food source for the population. Among these, the 'araçá of Cerrado' (Psidium firmum O. Berg), a fruit found naturally in the Brazilian Savannah, stands out. Therefore, we evaluated the physical characteristics, chemical composition, and occurrence and content of vitamin C, carotenoids, vitamin E and folates in 'araçá of Cerrado' from the Savannah of Minas Gerais, Brazil. Materials and methods. Titratable acidity was determined by volumetric neutralization, pH by potentiometry, soluble solids by refractometry, moisture using an oven, ash using a muffle furnace, protein by the micro-Kjeldhal method, total dietary fiber by the gravimetric non-enzymatic method, and lipids with a Soxhlet extractor. Vitamin C (ascorbic and dehydroascorbic acids) and carotenoids (α-carotene, β-carotene, β-cryptoxanthin and lycopene) were analyzed by HPLC-DAD. Vitamin E (α, β, γ and δ-tocopherols and α, β, γ and δ-tocotrienols) and folates (tetrahydrofolate, 5-methyltetrahydrofolate and 5-formyltetrahydrofolate) were analyzed by HPLC with fluorescence detection. Results and discussion. The araçá presented a high pulp yield (81.43%), soluble solids (11.93°Brix), moisture (77.46%), dietary fiber (12.32 g·100 g -1 ) and folates (47.25 mg·100 g ). Vitamin C was not found in the fruit. Conclusion. 'araçá of Cerrado' fruit stands out due to its high yield and showed good nutritional value, being classified as an excellent source of dietary fiber and at least a source of folates. Thus, its consumption should be encouraged.Brazil / Minas Gerais / Psidium firmum / fruits / physicochemical properties / carotenoids / vitamin content / energy value « Araçá du Cerrado », fruit de la savane brésilienne : caractéristiques physiques, composition chimique et teneur en caroténoïdes et vitamines.Résumé -Introduction. La savane brésilienne est l'une des biodiversités les plus riches au monde ; elle contient des fruits indigènes présentant une haute valeur nutritionnelle. Ces fruits permettent à la faune de se nourrir et ils servent également de source de nourriture pour les populations. Parmi ceux-ci, la présence d' « araçá du Cerrado » (Psidium firmum O. Berg), un fruit naturellement présent dans la savane brésilienne, est à souligner. De ce fait, nous avons évalué les caractéristiques physiques, la composition chimique, la fréquence et la teneur en vitamine C, caroténoïdes, vitamine E et folates dans le fruit d' « araçá du Cerrado » de la savane de Minas Gerais, au Brésil. Matériel et méthodes. L'acidité titrable été déterminée par neutralisation volumétrique ; le pH par potentiométrie ; les solides solubles par réfractométrie ; l'humidité à l'aide d'un four ; les cendres à l'aide d'un four à moufle ; les protéines par le procédé microKjeldhal ; les fibres alimentaires totales par un procédé de gravimétrie non enzymatique ; les...
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