Enhancement of Polyphenols and Antioxidant Activity in Germinated Black Highland Barley by Ultrasonication

文献类型： 外文期刊

第一作者： Zhang, Jie

作者： Zhang, Jie;Dang, Bin;Zhang, Wengang;Zheng, Wancai;Yang, Xijuan;Zhang, Jie;Guo, Junling;Dang, Bin;Zhang, Wengang;Zheng, Wancai;Yang, Xijuan;Zhang, Jie;Guo, Junling;Dang, Bin;Zhang, Wengang;Zheng, Wancai;Yang, Xijuan

作者机构：

关键词： black highland barley; polyphenols; ultrasound; germination; antioxidant activity

期刊名称：MOLECULES （ 影响因子：4.6； 五年影响因子：4.9 ）

ISSN：

年卷期： 2023 年 28 卷 9 期

页码：

收录情况： SCI

摘要： The aim of this study was to investigate the effect of ultrasonic stress germination (USG) on total phenolic contents (TPC), total flavonoid contents (TFC), the phenolic compositions, and antioxidant activities of black highland barley (BHB). The USG processing parameters, polyphenol profile, phenolic compositions, and antioxidant activities were explored after USG. Results showed that the optimal USG parameters were as follows: 350 W ultrasonic pretreatment power, 30 degrees C ultrasonication temperature, 25 min ultrasonication time, and 64 h germination time. Under these conditions, the total phenolic content (688.84 +/- 5.30 mg/100 g) and total flavonoid content (59.23 +/- 0.45 mg/100 g) of BHB were increased by 28.55% and 10.15%, respectively, compared to the untreated samples. In addition, the USG treatment could more effectively enrich bound phenolic acids and free flavonoids, among which the content of catechin was significantly increased by USG and was the main characteristic substance. Moreover, the USG treatment could improve the antioxidant activity and had a higher antioxidant potency composite index (APC index) (97.91%) of BHB. These results indicate that USG might be an effective method to enrich polyphenols and improve antioxidant activity in BHB.

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