Enhancement of exo-polysaccharide production and antioxidant activity in submerged cultures of Inonotus obliquus by lignocellulose decomposition.

Journal of Industrial Microbiology & Biotechnology
Hui ChenXiangqun Xu

Abstract

We reported that lignocellulose decomposition can be used to facilitate the production of bioactive polysaccharides from submerged culture of Inonotus obliquus. Exo-polysaccharide (EPS) production and antioxidant activity by Inonotus obliquus was enhanced by employing lignocellulose decomposition in a corn straw-containing submerged fermentation. A significant increase in the EPS production and hydroxyl radical scavenging activity from 1.09 ± 0.01 g/l and 72.3 ± 1.9% in a basal medium to 1.38 ± 0.02 g/l and 82.7 ± 0.5% in a corn straw-containing medium was obtained. A synchronized effect between lignocellulose decomposition and malondialdehyde presenting hydroxyl radical concentration in the fermentation broth was identified. The adding of thiourea, a hydroxyl radical-scavenging reagent, suppressed malondialdehyde generation and lowered the lignocellulose decomposition rate. Correspondingly, the EPS production and hydroxyl radical scavenging activity decreased to 1.26 g/l and 74%. The EPS obtained from the corn straw-containing medium also presented the strongest superoxide radical scavenging activity. The monosaccharide components of the EPS from the corn straw-containing medium are rhamnose, arabinose, xylose, mannose, glucos...Continue Reading

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Citations

Oct 21, 2014·Journal of Food Science and Technology·Shengjuan JiangDazhuang Yan
Mar 10, 2016·International Journal of Biological Macromolecules·Yang HuJuanjuan Qu
Dec 29, 2012·International Journal of Biological Macromolecules·Ning ZhangYu Zhang
Jun 14, 2017·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Qiong WangZhongyang Ding
Dec 8, 2019·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Mengya WangShisheng Tong
Jul 12, 2018·Applied Biochemistry and Biotechnology·Priyanka ChandraRakesh Kumar Sharma
Dec 14, 2018·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jiao XuePing Liu
Jun 28, 2018·Bioprocess and Biosystems Engineering·Lu-Xi JiangJian-Hui Xiao
Sep 17, 2021·Journal of Basic Microbiology·Zhe NingShujun Wang

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