首页> 外文期刊>Journal of Agricultural and Food Chemistry >Total Phenolic Content, Antioxidant Activity, and Cross-Cultural Consumer Rejection Threshold in White and Red Wines Functionally Enhanced with Catechin-Rich Extracts
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Total Phenolic Content, Antioxidant Activity, and Cross-Cultural Consumer Rejection Threshold in White and Red Wines Functionally Enhanced with Catechin-Rich Extracts

机译:富含儿茶素的提取物功能增强白葡萄酒和红葡萄酒中的总酚含量,抗氧化活性和跨文化的消费者拒绝阈值

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摘要

White and red wines spiked with catechin-rich green tea extract and grape seed extract were assessed for phenolic content, antioxidant activity, and cross-cultural consumer rejection thresholds in relation to wine as a functional food. Health functionality is an important factor in functional foods, and spiking pure compounds or plant extracts is an effective method to increase or control functionality. The total phenolic content and antioxidant activity were measured in wines spiked to different extract concentrations, namely, control and 50, 100, 200, 400, and 800 mg/L, to confirm the dose—response curves in both white and red wines. Consumer rejection thresholds (CRTs) were established for spiked wines in a Korean and in an Australian population. Our results showed that the green tea extract and grape seed extract increased the antioxidant activity dose dependency, and the CRTs varied considerably between the Korean and the Australian groups, with Koreans preferring wines spiked with green tea extract and Australians showing a preference for wines spiked with grape seed extract. These results have implications for producing wine products that are enhanced in phenolic compounds and targeted to different cultural groups.
机译:评估了掺有富含儿茶素的绿茶提取物和葡萄籽提取物的白葡萄酒和红葡萄酒的酚含量,抗氧化活性以及与葡萄酒作为功能性食品相关的跨文化消费者拒绝阈值。健康功能是功能食品中的重要因素,掺加纯化合物或植物提取物是增加或控制功能的有效方法。在加标至不同提取物浓度(即对照和50、100、200、400和800 mg / L)的葡萄酒中,测量了总酚含量和抗氧化活性,以确认白葡萄酒和红葡萄酒的剂量反应曲线。为韩国人和澳大利亚人中加标葡萄酒确定了消费者拒绝阈值(CRT)。我们的结果表明,绿茶提取物和葡萄籽提取物增加了抗氧化活性的剂量依赖性,并且在韩国和澳大利亚人群之间,CRT差异很大,韩国人更喜欢掺入绿茶提取物的葡萄酒,而澳大利亚人则偏爱掺入绿茶提取物的葡萄酒。葡萄籽提取物。这些结果对生产葡萄酒中的酚类化合物具有增强作用,并针对不同的文化群体具有重要意义。

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