Antioxidant Activity, Nutritional, And Phenolic Composition Of Sweet Potato Leaves As Affected By Harvesting Period
文献类型: 外文期刊
作者: Suarez, S; Mu, TH; Sun, HN; Anon, MC
作者机构:
关键词: Sweet Potato Leaves; Harvest Period; Nutritional Composition; Phenolic Composition; Antioxidant Activity
期刊名称: INTERNATIONAL JOURNAL OF FOOD PROPERTIES
ISSN: 1094-2912
年卷期: 2020 年 23 卷 1 期
页码:
收录情况: JCR(2021版) ; EI(2021版)
摘要: In the present study, the nutritional and phenolic composition as well as the antioxidant activity of sweet potato leaves (SPL) harvested in 3 different periods were determined and compared. Furthermore, gray relational analysis was used to compare the comprehensive nutritional value. Results showed SPL HP1 had the highest protein value (30.8 +/- 0.4 g/100 g dw), while SPL HP3 had the highest content of vitamin C (104.6 +/- 4.9 mg/100 g dw), vitamin E (5.8 +/- 0.4 mg/100 g dw), total polyphenol content (9.1 +/- 0.3 g/100 g dw), antioxidant activity (DPPH: 7.4 +/- 0.1 g VcE/100 g dw; ABTS: 10.6 +/- 0.7 g VcE/100 g dw; FRAP: 0.617 +/- 0.005 mu mol TroloxE/100 g dw), and comprehensive nutritional value (weighted gray relational grade 0.8336). The individual phenolic composition showed the presence of six caffeoylquinic acids, caffeic acid, and two flavonoids (quercetin and isoquercetin), which were significantly different among different harvest periods. In conclusion, HP3 was an optimal period for harvesting SPL.
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