甘草酸提取废液α-葡萄糖苷酶抑制剂的筛选与鉴定

doi:10.7506/spkx1002-6630-201813004

食品科学 ›› 2018, Vol. 39 ›› Issue (13): 22-28.doi: 10.7506/spkx1002-6630-201813004

甘草酸提取废液α-葡萄糖苷酶抑制剂的筛选与鉴定

余颖1，樊金玲1,*，程源斌2，朱文学1

1.河南科技大学食品与生物工程学院，河南洛阳 471023；2.洛阳蓝斯利科技有限公司，河南洛阳 471023

出版日期:2018-07-15 发布日期:2018-07-09
基金资助:
国家自然科学基金面上项目（31571800）；河南省高校科技创新团队支持计划项目（17IRTSTHN016）

Screening and Identification of α-Glucosidase Inhibitor in Waste Liquid from Glycyrrhizic Acid Extraction

YU Ying1, FAN Jinling1,*, CHENG Yuanbin2, ZHU Wenxue1

1. College of Food & Bioengineering, Henan University of Science and Technology, Luoyang 471023, China; 2. Luoyang Lansley Science and Technology Co. Ltd., Luoyang 471023, China

Online:2018-07-15 Published:2018-07-09

摘要/Abstract

摘要： 将甘草酸提取废液用正己烷、氯仿、乙酸乙酯、正丁醇进行梯度萃取，检测各萃取相对α-葡萄糖苷酶的抑制作用，筛选出活性最强的萃取相；根据双倒数曲线图判断其对α-葡萄糖苷酶的抑制作用类型，采用联合作用指数分析其与阿卡波糖的协同作用；通过超高效液相色谱-二极管阵列检测-质谱检测方法分析，结合酸水解以及与标准品相对照的方法，初步鉴定其主要成分的化学结构，并测定主要成分的含量。结果表明：在甘草酸提取废液各溶剂萃取物中，乙酸乙酯萃取相对α-葡萄糖苷酶的抑制作用最强，为竞争性抑制，半抑制浓度为0.152 9 g/L，抑制常数Ki为0.085 1 g/L；与阿卡波糖有协同抑制效应；其主要成分为甘草素、柚皮素、异甘草素以及芒柄花素的单糖苷和二糖苷。甘草素类、柚皮素类、异甘草素类和芒柄花素类的黄酮含量总计分别为28.08%、2.95%、11.80%和 4.38%；黄酮总含量为47.21%。

关键词: 甘草酸提取废液, α-葡萄糖苷酶, 抑制作用, 甘草黄酮, 协同作用

Abstract: Waste liquid from glycyrrhizic acid extraction was extracted with n-hexane, chloroform, ethyl acetate and n-butyl alcohol sequentially. The inhibitory effects of the resulting extracts on α-glucosidase were studied compared to identify the one with the highest inhibitory effect. The inhibition type was evaluated based on the Lineweaver-Burk plot and synergistic interaction between the selected extract and acarbose was analyzed by combination index. The chemical structure and amounts of the major components of the extract were determined using ultra-high performance liquid chromatography-diode array detection-mass spectrometry following acid hydrolysis by comparison with standards. The results showed that the ethyl acetate extract had the strongest inhibitory activity against α-glucosidase through competitive inhibition with an half maximal inhibitory concentration value of 0.152 9 g/L and an inhibition constant (Ki) value of 0.085 1 g/L, and synergistic effect existed between acarbose and the ethyl acetate extract. The major constituents of the extract were monoglucosides and diglucosides of glycyrrhizin, naringenin, isoliquiritigenin and formononetin. The contents of the flavonoids glycyrrhizin, naringenin, isoliquiritigenin and formononetin were 28.08%, 2.95%, 11.80% and 4.38% respectively. The content of total flavonoids was 47.21%.

Key words: waste liquid from glycyrrhizic acid extraction, α-glucosidase, inhibition, licorice flavonoids, synergistic effect

中图分类号:

R284.1

余颖，樊金玲，程源斌，朱文学. 甘草酸提取废液α-葡萄糖苷酶抑制剂的筛选与鉴定[J]. 食品科学, 2018, 39(13): 22-28.

YU Ying, FAN Jinling, CHENG Yuanbin, ZHU Wenxue. Screening and Identification of α-Glucosidase Inhibitor in Waste Liquid from Glycyrrhizic Acid Extraction[J]. FOOD SCIENCE, 2018, 39(13): 22-28.

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甘草酸提取废液α-葡萄糖苷酶抑制剂的筛选与鉴定

Screening and Identification of α-Glucosidase Inhibitor in Waste Liquid from Glycyrrhizic Acid Extraction

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