天然产物研究与开发 ›› 2024, Vol. 36 ›› Issue (增刊2): 54-58.

• 研究简报 • 上一篇    下一篇

小叶箬竹叶酚酸化学成分及体外抗氧化活性研究

许子竞1*,薛站1,杨雪清2,陶文亮2   

  1. 1贵州工程应用技术学院化学工程学院天然产物中心,毕节 551700;2贵州民族大学化学工程学院,贵阳 550025
  • 出版日期:2024-12-09 发布日期:2024-12-09
  • 基金资助:
    贵州省科技计划项目(黔科合支撑[2020]4Y04);贵州民族大学校级科研平台建设项目(校科平台字[2019]03)

Phenolic acid from Indocalamus victorialis Keng f.and its antioxidant activity in vitro

XU Zi-jing1*,XUE Zhan1,YANG Xue-qing2,TAO Wen-liang2   

  1. 1Natural Products Center of Chemical Engineering,College of Guizhou Institute of Engineering Application Technology,Bijie 551700,China;2College of Chemical Engineering,Guizhou Minzu University,Guiyang 550025,China
  • Online:2024-12-09 Published:2024-12-09

摘要:

研究小叶箬竹叶酚酸化学成分及体外抗氧化活性。借助微波用50%乙醇溶液提取小叶箬竹叶,提取物用石油醚和正丁醇进行萃取。正丁醇萃取物用硅胶柱色谱、Sephadex LH-20凝胶柱色谱、半制备HPLC等方法进行反复分离纯化,从中分离纯化得到10个酚酸类化合物,分别鉴定为芥子酸(1)、阿魏酸(2)、对香豆酸(3)、丁香酸(4)、咖啡酸(5)、香草酸(6)、绿原酸(7)、对羟基苯甲酸(8)、龙胆酸(9)和原儿茶酸(10)。将正丁醇萃取物进行半制备,获得小叶箬竹叶自然酚酸组成混合物,将其配成一系列浓度的溶液与同浓度VC进行体外抗氧化对照试验,发现其清除能力在5.0 mg/mL时与阳性对照VC的清除能力基本接近,清除率分别为79.01%和70%,表明小叶箬竹叶所含酚酸化合物抗氧化能力很强。

关键词: 小叶箬竹叶, 提取分离, 化学成分, 结构鉴定, 抗氧化活性

Abstract:

This study aims to investigate the phenolic acid from Indocalamus victorialis Keng f.and its antioxidant activity in vitro.The leaves from I. victorialis were extracted by microwave with 50% ethanol and the extraction was extracted with petroleum ether and n-butanol in order.Ten phenolic acids were isolated from n-butanol extraction by repeated separation and purification with silica gel column chromatography,Sephadex LH-20 gel column chromatography and semi-preparative HPLC,their structures were identified as myrosinic acid (1),ferulic acid (2),p-coumaric acid (3),syringic acid (4),caffeic acid (5),vanillic acid (6),chlorogenic acid (7),p-hydroxybenzoic acid (8),gentaric acid (9) and protocatechuic acid (10).The mixture of natural phenolic acids from I. victorialis leaves was obtained by semi-preparation from n-butanol extract,and then mixed into a series of solutions with the same concentration of VC to carry out in vitro antioxidant control experiments.The scavenging rate of VC was similar to that of the positive control at 5.0 mg/mL,the scavenging rate was 79.01% and 70% respectively,indicating that the phenolic compounds in I. victorialis leaves had strong antioxidant activity.

Key words: Indocalamus victorialis leaves, extraction and isolation, chemical constituents, structure identification, antioxidant activity

中图分类号:  R284