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标题：Near‐harvest application of methyl jasmonate affected phenolic content and antioxidant properties in “Thompson Seedless” grape
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作者：Ehsan Ranjbaran ; Mansour Gholami ; Martin Jensen 等
期刊名称：Food Science & Nutrition
电子版ISSN：2048-7177
出版年度：2022
卷号：10
期号：2
页码：477-486
DOI：10.1002/fsn3.2697
语种：English
出版社：John Wiley & Sons, Ltd.
摘要：Abstract The influence of methyl jasmonate (MJ) preharvest treatment was investigated on some polyphenols and antioxidant systems in the “Thompson Seedless” table grape. The clusters were sprayed in the vineyard 2 days before harvest with 0, 1, 5, and 10 mM MJ. After picking, berries were stored for 6 days at 15°C, simulating marketing conditions. Total phenols and flavonoids were affected by MJ treatment, especially at 10 mM concentration, whereas total tannins were found to be unchanged. Antioxidant activity of the treated skin was noticeably higher compared with the control, together with PAL and POD activity. Although MJ had little effect on catechin and epicatechin, the levels of quercetin and rutin were noticeable. In addition, 5 and 10 mM MJ exerted a pronounced effect on transresveratrol content. These data showed that a single preharvest application close to the harvest time could be an effective treatment to promote the antioxidant properties of the grape.