Lignocellulose degradation patterns, structural changes, and enzyme secretion by Inonotus obliquus on straw biomass under submerged fermentation

2017 ◽  
Vol 241 ◽  
pp. 415-423 ◽  
Author(s):  
Xiangqun Xu ◽  
Zhiqi Xu ◽  
Song Shi ◽  
Mengmeng Lin
Keyword(s):  
Submerged Fermentation ◽  
Structural Changes ◽  
Enzyme Secretion ◽  
Lignocellulose Degradation ◽  
Inonotus Obliquus

scholarly journals Effect of Alkali-Treated Birch Sawdust on the Lignocellulase Secretion and Exo-Polysaccharide Production by Inonotus Obliquus Under Submerged Fermentation and its Lignocellulose Degradation Patterns

2021 ◽  
Author(s):  
Jiaming Zhang ◽  
Xiaohong Lu ◽  
Zhezhen Zhao ◽  
Mengya Wang ◽  
Ping Liu
Keyword(s):  
Submerged Fermentation ◽  
Degradation Rate ◽  
Lignocellulose Degradation ◽  
Lignocellulolytic Enzymes ◽  
Inhibition Rate ◽  
Alkali Pretreatment ◽  
Inonotus Obliquus ◽  
Polysaccharide Production ◽  
Degradation Analysis ◽  
Lignocellulase Secretion

Abstract The objectives of this study were to investigate the medicinal mushroom Inonotus obliquus on the production of polysaccharides and changes of extracellular lignocellulolytic enzymes during submerged fermentation using alkali-treated birch sawdust as substrate. Meanwhile, in order to explore the degradation mode of lignocellulose in alkali-treated birch sawdust, degradation analysis of three components of lignocellulose was carried out. The fungus process in alkali-treated birch sawdust medium resulted in a higher degradation rate of cellulose, hemicellulose, and lignin of 39.24%, 51.00% and 31.3% after 11 days of submerged fermentation by the mycelium of I. obliquus, respectively. Maximal polysaccharide production and α-glucosidase inhibition rate determined in the alkali-treated birch sawdust medium were 6.93 mg/mL and 55.80%,while they were 4.98 mg/mL and 27.89% in the control. Moreover, high activities of Laccase (51.95 IU/mL) , CMCase (1.35 IU/mL) , FPA (0.50 IU/mL) and β-glucosidase (0.55 IU/mL) were observed in alkali-treated birch sawdust medium, respectively. The results demonstrated that the addition of alkali-treated birch sawdust could promote the yield of active polysaccharides and induce the production of cellulase and xylanase, indicating that alkali pretreatment was conducive to utilization of birch sawdust by I. obliquus.

The Influence of Submerged Fermentation of Inonotus obliquus with Control Atmosphere Treatment on Enhancing Bioactive Ingredient Contents

2020 ◽  
Vol 191 (1) ◽  
pp. 412-425
Author(s):  
Hsin-Jung Chen ◽  
Yuh-Shuen Chen ◽  
Shih-Lun Liu ◽  
Bo-Kang Liou ◽  
Chin-Shuh Chen
Keyword(s):  
Submerged Fermentation ◽  
Control Atmosphere ◽  
Inonotus Obliquus
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