食品科学2018，Vol.39Issue(9)：33-38,6.DOI:10.7506/spkx1002-6630-201809006
5 种莲副产物中活性成分及其抗氧化、α-葡萄糖苷酶抑制活性比较
Comparison of Bioactive Compounds, Antioxidant Activity and α-Glucosidase Inhibition Activity of Five By-Products from Lotus Seed Production
摘要
Abstract
A large amount of lotus receptacle, epicarp, and seed skin are discarded every year without any further utilization. Thus, this study was designed to compare the potentials in high-value utilization of lotus leaf, receptacle, epicarp, seed skin and plumule. The contents of major bioactive compounds in extracts from these materials were measured, and the antioxidant activities and hypoglycemic potential were analyzed with three antioxidant models and α-glucosidase inhibitory assay, respectively. The results indicated that lotus receptacle extract had the highest contents of phenols (232.50 mg GAE/g) and triterpenoids (423.75 mg OAE/g), while the highest content of flavonoids (41.48 mg QuE/g) and condensed tannins (36.13 mg CaE/g) was found in lotus leaf and lotus seed skin extract, respectively. In addition, lotus receptacle extract showed the strongest antioxidant and α-glucosidase inhibition. The 1,1-diphenyl-2-picrylhydrazyl scavenging ability, 2,2'-azino-bis-(3-ethylbenzthiazoline-6-sulphonate) scavenging ability and α-glucosidase inhibition were 2.64, 1.17 and 85 folds higher than that of the positive control, respectively. Furthermore, lotus seed skin extract had the second highest antioxidant ability; the α-glucosidase inhibition of lotus leaf, lotus receptacle, lotus epicarp, and lotus seed skin was higher than that of acarbose. Correlation analysis indicated that phenolics and condensed tannins contributed the most to free radical scavenging and α-glucosidase inhibitory activity, whereas flavonoids contributed the most to reducing power. Thus, lotus receptacle has considerable antioxidant and hypoglycemic activities, and phenolics, flavnoids and condensed tannins are the major bioactive compounds, and therefore it needs to be further investigated for in vivo activity against hyperglycaemia, diabetes and diabetic complication.关键词
莲副产物/莲蓬壳/多酚/抗氧化活性/α-葡萄糖苷酶活性抑制能力Key words
lotus by-products/ lotus receptacle/ polyphenols/ antioxidant activity/ α-glucosidase inhibition activity分类
轻工纺织引用本文复制引用
张露,黄祥霞,涂宗财,赵伊,王辉,王豪,沙小梅,张恕雅..5 种莲副产物中活性成分及其抗氧化、α-葡萄糖苷酶抑制活性比较[J].食品科学,2018,39(9):33-38,6.基金项目
江西省教育厅项目(GJJ150331) （GJJ150331）
江西省重大生态安全问题监控协同创新中心资助项目(JXS-EW-00) （JXS-EW-00）
