Correia Ana C, Jordão António M
a Polytechnic Institute of Viseu (Centre for the Study of Education, Technologies and Health), Agrarian Higher School, Estrada de Nelas, Quinta da Alagoa, Ranhados , 3500-606 Viseu , Portugal.
Nat Prod Res. 2015;29(5):438-40. doi: 10.1080/14786419.2014.945086. Epub 2014 Aug 11.
The aim of this study was to investigate the antioxidant capacity, radical scavenger activity, lipid oxidation protection and antimicrobial activity of grape extracts from 12 different red grape varieties cultivated in Portugal. The mean values of total phenolic content quantified in grape extracts varied from 833.7 to 2005.6 mg/L gallic acid. Antioxidant capacity results showed different values for each grape variety ranging from 3.96 to 32.96 mm/L Fe(II). The scavenger activity values ranged from 15.99% to 54.82% for the superoxide radical and from 11.79% to 29.67% for the hydroxyl radical. The grape extracts with the highest antioxidant capacity had a positive effect on the lipid oxidation protection and induced low peroxide values in butter samples. Finally, concerning antimicrobial activity, grape extracts from Touriga Nacional and Tinta Roriz grape varieties had significant antimicrobial activity, especially notable for total mesophilic aerobics.
本研究的目的是调查葡萄牙种植的12个不同红葡萄品种的葡萄提取物的抗氧化能力、自由基清除活性、脂质氧化保护和抗菌活性。葡萄提取物中总酚含量的平均值在833.7至2005.6mg/L没食子酸之间。抗氧化能力结果显示，每个葡萄品种的值不同，范围为3.96至32.96mmol/L Fe(II)。超氧阴离子自由基的清除活性值在15.99%至54.82%之间，羟基自由基的清除活性值在11.79%至29.67%之间。抗氧化能力最高的葡萄提取物对脂质氧化保护有积极作用，并在黄油样品中诱导出较低的过氧化物值。最后，关于抗菌活性，国产多瑞加（Touriga Nacional）和罗丽红（Tinta Roriz）葡萄品种的葡萄提取物具有显著的抗菌活性，对总嗜温需氧菌尤为显著。
