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An innovative co-fungal treatment to poplar bark sawdust for delignification and polyphenol enrichment

文献类型： 外文期刊

作者： Xie, Pujun 1 ; Fan, Linlin 7 ; Huang, Lixin 1 ; Zhang, Caihong 1 ;

作者机构： 1.CAF, Inst Chem Ind Forest Prod, Beijing, Peoples R China

2.CAF, Inst New Technol Forestry, Beijing 100091, Peoples R China

3.Natl Engn Lab Biomass Chem Utilizat, Beijing, Peoples R China

4.SFA, Key & Open Lab Forest Chem Engn, Beijing, Peoples R China

5.Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China

6.Nanjing Forestry Univ, Coinnovat Ctr Efficient Proc & Utilizat Forest Re, Nanjing 210037, Peoples R China

7.Jiangsu Acad Agr Sci, Inst Agroprod Proc, Nanjing 210014, Peoples R China

关键词： Lignin degradation; Synergistic efficacy; Symbiotic fungi; Protocatechuic acid; HPLC-ESI-QTOF-MS/MS

期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.645； 五年影响因子：5.749 ）

ISSN： 0926-6690

年卷期： 2020 年 157 卷

页码：

收录情况： SCI

摘要： This work aims to demonstrate a new high-efficient way to lignin degradation plus polyphenol enrichment in poplar bark sawdust by a co-fungal treatment with white rot fungi of C. subvermispora, C. cinereus and P. ostreatus in an equal volume-ratio fermentation for three weeks. The results indicated that compared with any one of these fungi, over 50 % lignin-degradation and 6-fold polyphenol enrichment were achieved at the 12th day for the best performance by these mixed-fungi treatments. The polyphenol enrichments from the increasing amount of pmtocatechuic acid and caffeic acid-3-glucoside were confirmed by HPLC-ESI-QTOF-MS/MS and ATR-FT-IR, which facilitated the lignin-degradation in turn. They were potentially ascribed to an obvious improvement activity of ligninolytic enzyme (laccase, lignin peroxidase and manganese-dependent peroxidase) for the lignindegradation and beta-glycosidase action for flavonoid degradation, respectively. All above-mentioned results will provide a potential protocol for lignin degradation and polyphenol enrichment when the different fungi in coculture play a role in synergism.

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