São Paulo State University (Unesp), Institute of Biosciences, Humanities and Exact Sciences (Ibilce), Campus São José do Rio Preto, Rua Cristóvão Colombo n° 2265, 15054-000 São José do Rio Preto, São Paulo, Brazil.
Brazilian Agricultural Research Corporation Grape and Wine - Jales, Via Acesso Euphly s/n, 15.700-000 Jales, São Paulo, Brazil.
Food Res Int. 2019 Feb;116:190-199. doi: 10.1016/j.foodres.2018.08.012. Epub 2018 Aug 3.
The grape is an important fruit regarding economic and health benefit parameters, because of its large consumption around the world and their bioactive phenolic compounds. The drying process of BRS Morena grapes, whether pre-treated or not with olive oil for producing raisins, resulted in qualitative and quantitative changes in their phenolic composition (anthocyanins, flavonols, stilbenes, hydroxycinammic acid derivatives, flavan-3-ols and proanthocyanidins). The raisins with the pre-treatment preserved more anthocyanins and proanthocyanidins than the raisins not pre-treated. Moreover, the total dehydration time accelerated by approximately 40% in the raisins pre-treated. Therefore, the production of raisins of BRS Morena grapes pre-treated with olive oil as a natural surfactant constitutes an interesting process from both the industrial and health points of view, because of the remarkable reduction in the processing time and the preservation of high concentrations of flavonoids, which have important claims to health benefits from biological activities.
葡萄是一种重要的水果，无论在经济方面还是健康方面都具有重要意义，这是因为其在全世界的高消耗量和生物活性酚类化合物。BRS Morena 葡萄无论是经过预处理还是未经预处理与橄榄油一起干燥以生产葡萄干，都会导致其酚类成分（花青素、类黄酮、白藜芦醇、羟基肉桂酸衍生物、黄烷醇和原花青素）发生质和量的变化。经过预处理的葡萄干比未经预处理的葡萄干保留了更多的花青素和原花青素。此外，预处理的葡萄干总脱水时间加快了约 40%。因此，用橄榄油作为天然表面活性剂预处理 BRS Morena 葡萄生产葡萄干从工业和健康的角度来看都是一个有趣的过程，因为加工时间显著缩短，并且保留了高浓度的类黄酮，这些类黄酮具有重要的生物活性健康益处。
