College of Agronomy, Henan Agricultural University, Zhengzhou, 450002, China.
Life Science College, Luoyang Normal University, Luoyang, Henan, 471934, China.
Sci Rep. 2020 Feb 11;10(1):2364. doi: 10.1038/s41598-020-59434-0.
Peanut is a popular food due to its high nutrient content. The effects of ZnCl on peanut seed germination, fatty acid and sugar contents, vitamin biosynthesis, antioxidant content, and Zn assimilation were evaluated in this study. Treatment with ZnCl significantly improved the germination rate, enhanced reactive oxygen species production and reduced the content of total fatty acids in peanut seed and sprout. However, ZnCl treatment did not reduce total sugar or total protein relative to the control. Germination promoted the biosynthesis of phenolics and resveratrol and increased the antioxidant capacity, as evaluated by Fe reducing power and 2,2-diphenyl-1-picrylhydrazyl radical scavenging ability, especially under Zn stress conditions. The vitamin content decreased in the following order among treatments: germinated seeds with ZnCl treatment > germinated seeds without ZnCl treatment > dormant seeds. Interestingly, Zn content was approximately five times higher in the germinated ZnCl-treated seeds compared to in the untreated germinated seeds and the dormant seeds. The results of this study provide a new method for producing healthy foods with enhanced vitamin content and antioxidant capacity.
花生因营养丰富而广受欢迎。本研究评价了 ZnCl 对花生种子萌发、脂肪酸和糖含量、维生素生物合成、抗氧化含量和 Zn 同化的影响。ZnCl 处理显著提高了花生种子和芽的萌发率，增强了活性氧的产生，降低了总脂肪酸的含量。然而，与对照相比，ZnCl 处理并没有降低总糖或总蛋白的含量。萌发促进了酚类和白藜芦醇的生物合成，并通过铁还原力和 2,2-二苯基-1-苦基肼自由基清除能力评估，增加了抗氧化能力，尤其是在 Zn 胁迫条件下。维生素含量在以下处理中依次降低：用 ZnCl 处理的萌发种子 > 未用 ZnCl 处理的萌发种子 > 休眠种子。有趣的是，与未处理的萌发种子和休眠种子相比，ZnCl 处理的萌发种子中的 Zn 含量约高 5 倍。本研究为生产具有增强的维生素含量和抗氧化能力的健康食品提供了一种新方法。
