Torres Josep Lluís, Varela Begoña, García María Teresa, Carilla Josep, Matito Cecilia, Centelles Josep J, Cascante Marta, Sort Xavier, Bobet Raül
Department of Peptide and Protein Chemistry, Department of Surfactant Technology, and Thermal Analysis Laboratory, Institute for Chemical and Environmental Research (IIQAB-CSIC), Jordi Girona 18-26, 08034 Barcelona, Spain.
J Agric Food Chem. 2002 Dec 18;50(26):7548-55. doi: 10.1021/jf025868i.
Many byproducts and wastes generated by agroindustries contain polyphenols with potential application as food antioxidants and preventive agents against skin cancer and other diseases. The performance of polyphenolic fractions from Parellada grape (Vitis vinifera) pomace as antioxidants in different physicochemical environments was tested. Fractions containing oligomers with mean degree of polymerization between 3 and 4 and percentage galloylation ca. 30% were the most potent free radical scavengers and efficient antioxidants in an oil-in-water emulsion. A fraction including glycosylated flavonols was also efficient in the emulsion. All the fractions showed low aquatic toxicity and weak influence on proliferation of human melanoma cells.
农产品加工业产生的许多副产品和废弃物都含有多酚，这些多酚具有作为食品抗氧化剂以及预防皮肤癌和其他疾病的潜在应用价值。对来自帕雷拉达葡萄（欧亚葡萄）果渣的多酚级分在不同物理化学环境中作为抗氧化剂的性能进行了测试。含有平均聚合度在3至4之间且没食子酰化百分比约为30%的低聚物的级分是水包油乳液中最有效的自由基清除剂和高效抗氧化剂。一个包含糖基化黄酮醇的级分在乳液中也很有效。所有级分对水生生物的毒性都很低，对人黑色素瘤细胞增殖的影响也很微弱。
