*A quem a correspondência deve ser enviada Minerals and essential fatty acids of the exotic fruit Physalis peruviana L. Minerais e ácidos graxos essenciais da fruta exótica Physalis peruviana L.Eliseu RodRIguES 1 , Ismael Ivan RoCkENbACh 1 *, Ciriele CATANEo 1 , Luciano Valdemiro goNzAgA 1 , Eduardo Sidinei ChAVES 2 , Roseane FETT 1 1 Introduction high production of several native and exotic fruits in brazil is due to its large territory and its presence in areas of tropical and temperate climates (gRANAdA;zAmbIAzI;mENdoNçA, 2004). however, national fruit production has a great expansion potential once several native and exotic fruits are not economically explored. Attempts to turn such unexplored cultures into reasonable ones are in course, mainly for atemóia, maná, canistel, mirtilo, lichia, physalis and star fruit (LAgo;gomES;SILVA, 2006). P. peruviana is an exotic fruit that belongs to the Solanaceae family and Physalis genus from Amazon and Andes. however, some varieties are cultivated in America, Europe, and Asia. This golden colored spherical fruit, also known as goldenberry, is commercially produced in Ecuador, South Africa, kenya, zimbabwe, Australia, New zealand, hawaii, India, malaysia, Colombia, and China. Currently, the production of physalis has expanded to tropical and subtropical countries such as the Caribbean and Colombia, the major producer (NoVoA et al., 2006). In brazil, physalis is popular in the Northern and Northeastern regions, but it is novelty in the Southern and Southeastern regions. It can be found in local markets mainly in São Paulo and Rio de Janeiro, but it has still been imported from Colombia at high prices since the brazilian production is still small.In most countries, the goldenberry is cultivated in backyards for direct consuming. however, they do carry prestige in some international markets, such Europe, where premium prices are paid for the fruits. besides having a future potential as fresh fruit, it can be enjoyed as an ingredient in salads, cooked dishes, desserts, jams, natural snacks, and fruit preserves (RAmAdAN;möRSEL, 2003). moreover, P. peruviana is a medicinal plant widely used in folk medicine as anticancer, antimycobacterial, antipyretic, and immunomodulatory and also for treating diseases such as malaria, asthma, hepatitis, dermatitis, and rheumatism (Wu et al., 2005). despite its importance, there are only few works in the literature concerning this fruit and no study has been carried out in brazil regarding its chemical composition. Thus, the aim of this work was to determine the centesimal and mineral composition of Physalis peruviana, as well as to evaluate the fatty acid composition of its lipid fraction. ResumoPhysalis peruviana é uma fruta exótica pertencente à família Solanaceae com produção recente no brasil, principalmente na região Sul. Como há poucos dados em relação à sua composição química, este trabalho apresenta a composição centesimal e mineral e o perfil de ácidos graxos da fração lipídica da Physalis peruviana. Em relação à composição cente...
ResumoEste trabalho propõe uma investigação do potencial antioxidante do resíduo no processamento de uvas das variedades COUDERC 13 e PINOT GRIS, ambas coletadas em Videira-SC, como fonte natural de polifenóis e outros agentes profiláticos (antioxidantes) para aplicação nas indústrias alimentícia e de fitoterápicos. A biomassa utilizada para obtenção dos extratos foi triturada e seca a diferentes temperaturas (45 o C, 60 o C e 80 o C), utilizando como solvente acetona 80%. Os compostos fenólicos foram avaliados quantitativamente pelo método colorimétrico de Folin-Ciocalteu e os resultados expressos em mg/100g equivalente de ácido gálico. Para a determinação de flavanóis totais foi aplicado o método DMACA (pdimetilaminocinmaldeido) e os resultados foram expressos em equivalente a mg de catequina/100g de amostra. A atividade antioxidante total (AAT) foi avaliada pelo método espectrofotométrico através da descoloração do radical ABTS•+ (2,2-azinobis-[3-etil-benzotiazolin-6-ácido sulfônico]) com persulfato de potássio, e pelo método DPPH (2,2-Difenil-1-picrilhidrazil), que tem como base a redução da absorbância do radical DPPH· por antioxidantes. Os resultados foram expressos em TEAC (atividade antioxidante equivalente ao Trolox) e VCEAC (atividade antioxidante equivalente à vitamina C). Observou-se uma melhor atividade antioxidante nos bagaços de uva PINOT GRIS, sendo que os extratos secos a 45oC foram os que apresentaram um teor mais elevado de compostos fenólicos e de flavonóis totais, assim como uma melhor atividade antioxidante para ambas as variedades de uvas. Estas informações se tornam úteis pela identificação dos compostos fenólicos, e para que este resíduo seja possivelmente utilizado como aditivo seguro na indústria de alimentos. Palavras-chave: Atividade antioxidante, extratos de uva, compostos fenólicos AbstractThe present work aimed to investigate the antioxidant properties of byproducts derived from wine production. The varieties of PINOT GRIS and COUDERC 13 grapes, collected in Videira-SC, were analyzed as natural sources of polyphenols and other prophylactic agents (antioxidants) for application in food and phytochemical industries. The biomass used for extracts was ground and dried in different
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