Biotechnological Processing of Sugarcane Bagasse through Solid-State Fermentation with White Rot Fungi into Nutritionally Rich and Digestible Ruminant Feed
文献类型： 外文期刊
作者： Khan, Nazir Ahmad 1 ; Khan, Mussayyab 2 ; Sufyan, Abubakar 3 ; Saeed, Ashmal 2 ; Sun, Lin 4 ; Wang, Siran 5 ; Nazar, Mudasir 5 ; Tan, Zhiliang 1 ; Liu, Yong 1 ; Tang, Shaoxun 1 ;
作者机构： 1.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha 410125, Peoples R China
2.Univ Agr, Dept Anim Nutr, Peshawar 25130, Pakistan
3.Bahauddin Zakariya Univ, Dept Livestock & Poultry Prod, Multan 60800, Pakistan
4.Inner Mongolia Acad Agr & Anim Husb Sci, Inner Mongolia Engn Res Ctr Dev & Utilizat Microbi, Hohhot 010031, Peoples R China
5.Nanjing Agr Univ, Inst Ensiling & Proc Grass, Coll Agrograssland Sci, Nanjing 210095, Peoples R China
6.Univ Chinese Acad Sci, Coll Adv Agr Sci, Beijing 100049, Peoples R China
关键词： sugarcane bagasse; lignocellulosic biomass; fungal treatment; solid-state fermentation; lignin degradation; delignification; digestibility
期刊名称：FERMENTATION-BASEL （ 影响因子：3.7； 五年影响因子：4.5 ）
ISSN：
年卷期： 2024 年 10 卷 4 期
页码：
收录情况： SCI
摘要： Sugarcane (Saccharum officinarum) bagasse (SCB) is one of the most widely produced lignocellulosic biomasses and has great potential to be recycled for sustainable food production as ruminant animal feed. However, due to severe lignification, i.e., lignin-(hemi)-cellulose complexes, ruminants can only ferment a minor fraction of the polysaccharides trapped in such recalcitrant lignocellulosic biomasses. This study was therefore designed to systematically evaluate the improvement in nutritional value, the in vitro dry matter digestibility (IVDMD), and the rate and extent of in vitro total gas (IVGP) and methane (CH4) production during the 72 h in vitro ruminal fermentation of SCB, bioprocessed with Agaricus bisporus, Pleurotus djamor, Calocybe indica and Pleurotus ostreatus under solid-state fermentation (SSF) for 0, 21 and 56 days. The contents of neutral detergent fiber, lignin, hemicellulose and CH4 production (% of IVGP) decreased (p < 0.05), whereas crude protein (CP), IVDMD and total IVGP increased (p < 0.05) after the treatment of SCB for 21 and 56 days with all white-rot fungi (WRF) species. The greatest (p < 0.05) improvement in CP (104.1%), IVDMD (38.8%) and IVGP (49.24%) and the greatest (p < 0.05) reduction in lignin (49.3%) and CH4 (23.2%) fractions in total IVGP were recorded for SCB treated with C. indica for 56 days. Notably, C. indica degraded more than (p < 0.05) lignin and caused greater (p < 0.05) improvement in IVDMD than those recorded for other WRF species after 56 days. The increase in IVGP was strongly associated with lignin degradation (R-2 = 0.72) and a decrease in the lignin-to-cellulose ratio (R-2 = 0.95) during the bioprocessing of SCB. Our results demonstrated that treatment of SCB with (selective) lignin-degrading WRF can improve the nutritional value and digestibility of SCB, and C. indica presents excellent prospects for the rapid, selective and more extensive degradation of lignin and, as such, for the improvement in nutritional value and digestibility of SCB for ruminant nutrition.
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