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Bioconversion of bamboo shoot shells through the cultivation of the edible mushrooms Volvariella volvacea
Ecotoxicology ( IF 2.4 ) Pub Date : 2020-09-27 , DOI: 10.1007/s10646-020-02281-6
Haibin Li 1, 2 , Zhixiao He 1 , Yingzhi Jiang 2 , Jie Kan 1 , Tao Peng 1 , Mingqi Zhong 1 , Zhong Hu 1
Affiliation  

Bamboo shoot shell (BSS), as agricultural waste, is mostly burned or discarded, causing serious environment pollution. In this study, the degradation and utilization of BSS by the edible fungus Volvariella Volvacea was investigated. The composition of V. volvacea fruit body was determined by HPLC-MS, GC-MS and ICP-OES. The activities of CMCase and xylanase were monitored by DNS (3,5-dinitrosalicylic acid) method. Laccase activity was assayed by the oxidation reaction of ABTS [2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonate)]. The degraded bamboo shoot shell powder was characterized by FTIR and SEM. The results showed that the mycelium of V. volvacea could degrade and utilize BSS for growth. The activities of carboxymethyl cellulase and laccase were increased during the cultivation. At the same time, the physical structure of the shell fiber becames porous and rough. Most of the products of decayed fibers contain alkanes, ethyl or methyl groups. Moreover, the biological efficiency (fruiting body yield) of V. volvacea cultivated on BSS was 1.52-fold higher than that of straw cultivation. The contents of total lipid, elaidic acid (C18:1n-9), total essential amino acids, total amino acids and iron in V. volvacea fruit bodies grown on BSS were 1.11, 1.66, 1.52, 1.60 and 1.30-fold higher than those of straw treatment, respectively. This study provides an effective method to solve the environmental pollution caused by BSS, and provides a new way for the potential utilization of BSS in edible fungi cultivation.



中文翻译:

栽培食用菌Volvariella volvacea的竹笋壳生物转化

竹笋壳(BSS)作为农业废弃物,大多被焚烧或丢弃,造成严重的环境污染。本研究考察了食用菌Volvariella Volvacea对BSS的降解和利用。通过HPLC-MS、GC-MS和ICP-OES测定了草菇子实体的组成。CMCase和木聚糖酶的活性通过DNS(3,5-二硝基水杨酸)方法监测。通过 ABTS [2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate)] 的氧化反应测定漆酶活性。通过FTIR和SEM对降解后的竹笋壳粉进行表征。结果表明,草菇菌丝体可以降解并利用 BSS 进行生长。培养过程中羧甲基纤维素酶和漆酶的活性增加。同时,壳纤维的物理结构变得多孔和粗糙。大多数腐烂纤维的产物都含有烷烃、乙基或甲基。此外,BSS栽培的草履虫的生物效率(子实体产量)比秸秆栽培高1.52倍。草履虫总脂质、反油酸(C18:1n-9)、总必需氨基酸、总氨基酸和铁的含量BSS 上生长的子实体分别比秸秆处理高 1.11、1.66、1.52、1.60 和 1.30 倍。本研究为解决BSS造成的环境污染提供了一种有效的方法,为BSS在食用菌栽培中的潜在利用提供了新途径。

更新日期:2020-09-28
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