Effects of drying methods on phytochemicals and antioxidant activity of broccoli by-products

文献类型： 外文期刊

第一作者： Zhao, Yaqi

作者： Zhao, Yaqi;Zhang, Wenyuan;Zhang, Zhanquan;Deng, Jianjun;Yang, Haixia;Xu, Zhenzhen;Wang, Xue

作者机构：

关键词： Broccoli by-products; Drying methods; Phytochemical composition; Antioxidant capacity

期刊名称：FOOD RESEARCH INTERNATIONAL （ 影响因子：8.0； 五年影响因子：8.5 ）

ISSN： 0963-9969

年卷期： 2025 年 208 卷

页码：

收录情况： SCI

摘要： The application of drying technology can rationally utilize fruit and vegetable resources and improve their economic benefits. To expand the application range of broccoli stems and leaves and enrich product varieties, drying them is a feasible high-value utilization method. This study aimed to identify the influences of freeze drying, microwave drying, and hot air drying on the metabolite and antioxidant activity of by-products. Phytochemical analysis revealed freeze-dried samples closely resembled fresh samples, while microwave and hot air drying increased phenolic acids, glucosinolates, and alkaloids. Random forest analysis identified the key differential compounds: the top three contributing compounds in leaves were alkaloids, phenolic acids, and glucosinolates, while the top three contributing compounds in stems were phenolic acids, alkaloids, and amino acids. Differences in antioxidant enzyme activities and free radical scavenging rates were linked to changes in flavonoid and glucosinolate content. These results offer novel insights into metabolite profiles of broccoli byproducts under various drying methods, highlighting their potential in food applications.

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