食品科学

• 基础研究 • 上一篇    下一篇

新疆药桑中稀有黄酮桑根酮M的分离鉴定及其抗氧化活性分析

向 伟1,喻 艳1,刘 静1,谷少伟1,徐 立1,*,左少纯2,黄先智1,蒲 彬2   

  1. 1.西南大学生物技术学院,重庆 400716;2.新疆维吾尔自治区和田蚕桑科学研究所,新疆 和田 848000
  • 出版日期:2015-11-15 发布日期:2015-12-03

Separation, Identification and Antioxidant Activity of Rare Flavonoid Sanggenon M in Black Mulberry Grown in Xinjiang

XIANG Wei1, YU Yan1, LIU Jing1, GU Shaowei1, XU Li1,*, ZUO Shaochun2, HUANG Xianzhi1, PU Bin2   

  1. 1. College of Biotechnology, Southwest University, Chongqing 400716, China;
    2. Hetian Sericultural Research Institute of Xinjiang Uygur Autonomous Region, Hetian 848000, China
  • Online:2015-11-15 Published:2015-12-03

摘要:

经70%乙醇冷浸提取、不同溶剂萃取,在清除1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基活性跟踪下,通过多次柱层析及薄层层析(thin layer chromatography,TLC),从药桑枝条中分离得到一种稀有黄酮类化合物,经波谱鉴定、结构分析确定其为桑根酮M(sanggenon M)。以人工合成的抗氧化剂二丁基羟基甲苯(butylated hydroxytoluene,BHT)为对照进行抗氧化活性实验,结果表明桑根酮M具有很好的抗氧化活性,其清除DPPH自由基和羟自由基(•OH)的IC50值分别为45.984 mg/L和65.692 mg/L(对照BHT的IC50值分别为64.189、231.556 mg/L),总还原力也明显高于BHT。

关键词: 药桑枝条, 桑根酮M, 分离鉴定, 黄酮, 抗氧化活性

Abstract:

A rare flavonoid compound was obtained from black mulberry branches through extraction with 70% cold
ethanol, fractionation by organic solvent extraction, column chromatography and thin-layer chromatography (TLC). The
flavonoid was identified as sanggenon M by spectroscopic and structural analysis. Antioxidant activity of sanggenon M was
evaluated in comparison with that of the synthetic antioxidant butylated hydroxytoluene (BHT). The IC50 of sanggenon M
for scavenging DPPH radical and hydroxyl radicals were 45.984 and 65.692 mg/L, respectively, compared to 64.189 and
231.556 mg/L for BHT. The total reducing power of sanggenon M was obviously higher than that of the control.

Key words: black mulberry branch, sanggenon M, separation and identification, flavonoid, antioxidant activity

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