食品科学

• 基础研究 • 上一篇    下一篇

不同食用菌菌糠多糖的组分分析与抗氧化活性评价

张 颖1,曾 艳2,张丽姣2,崔世茂1,孙媛霞2,*   

  1. 1.内蒙古农业大学农学院,内蒙古 呼和浩特 010010;2.中国科学院 天津工业生物技术研究所,天津 300308
  • 出版日期:2015-03-15 发布日期:2015-03-17

Monosaccharide Composition and Antioxidant Activity of Polysaccharides from Different Spent Mushroom Substrates

ZHANG Ying1, ZENG Yan2, ZHANG Lijiao2, CUI Shimao1, SUN Yuanxia2,*   

  1. 1. Agricultural College, Inner Mongolia Agricultural University, Hohhot 010010, China;
    2. Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, China
  • Online:2015-03-15 Published:2015-03-17

摘要:

目的:比较茶树菇、香菇、白玉菇、平菇和蛹虫草菌糠多糖的组成与抗氧化性。方法:通过酶解水提、乙醇沉淀和Sevag法脱蛋白步骤获得5 种菌糠多糖,进一步对其组成和抗氧化性进行分析评价。结果:5 种菌糠多糖均具有不同程度的抗氧化性,其中茶树菇菌糠多糖的氧自由基清除能力(oxygen radical absorbance capacity,ORAC)值和铁离子还原能力(ferric reducing antioxidant power,FRAP)值最佳,分别达到了1 215 μmol Trolox/g和281 μmol Fe2+/g;而白玉菇与平菇的菌糠多糖对2,2’-联氮基双(3-乙基苯并噻唑啉-6-磺酸)二铵盐(2,2’-azinobis(3-ehtylbenzothiazolin-6-sulfnicacid)diammonium salt,ABTS)自由基和1,1-二苯基-2-三硝基苯肼(1,1-diphenyl-2-picrylhydrazyl,DPPH)自由基清除能力较强。

关键词: 食用菌菌糠, 多糖, 抗氧化性, 茶树菇, 香菇, 白玉菇, 平菇, 蛹虫草

Abstract:

This study aimed to compare the composition and antioxidant activity of polysaccharides from spent mushroom
substrates of Agrocybe cylindracea, Lentinus edodes, white Hypsizygus marmoreu, Pleurotus ostreatus and Cordyceps
militaris. The polysaccharides were prepared after enzymatic extraction with cellulase, precipitation with ethanol and
deproteinization with Sevag regent, and then their monosaccharide composition and antioxidant activities were measured.
The results showed that all the polysaccharides had antioxidant activities. Therein, the polysaccharides from spent mushroom
substrate of Agrocybe cylindracea had the best oxygen free radical scavenging capacity and ferric reducing power, with
ORAC value of 1 215 μmol equivalent Trolox/g and FRAP value of 281 μmol equivalent Fe2+/g. The polysaccharides from
spent mushroom substrates of white Hypsizygus marmoreus and Pleurotus ostreatus possessed better ABTS and DPPH
radical scavenging activities than that from other spent mushroom substrates.

Key words: spent mushroom substrates, polysaccharide, antioxidant activity, Agrocybe cylindracea, Lentinus edodes;white Hypsizygus marmoreu, Pleurotus ostreatus, Cordyceps militaris

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