从废物转化为蛋白质:一种将堆肥蒸谷物废物转化为动物料的新策略
Lei Yu1,2,3, Zichao An1,2,3, Dengdeng Xie1,2,3
1School of Life Sciences, Anhui University, Hefei, China.
Frontiers in microbiology
|June 17, 2024
概括
一种新型的三微生物化合物有效地堆肥蒸谷物废物 (DGW),提高其适用于动物料的适用性. 这一过程增加了蛋白质含量,并减少了红素,改善了牛的体重增加.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 蒸谷物废弃物 (DGW) 富含营养,但高素,限制其作为动物料的使用.
- 在DGW中的素衍生物抑制了白色腐烂真菌的生长,如Pleurotus ostreatus,这些真菌是素降解的关键.
- 制定有效的DGW堆肥策略对于动物料制备和废物回收利用至关重要.
研究的目的:
- 调查土著细菌注射剂对DGW堆肥的有效性,以促进Pleurotus ostreatus的生长.
- 评估微生物堆肥对DGW物理化学性质和营养价值的影响.
- 评估经过处理的DGW作为动物料成分的性能.
主要方法:
- 三种土著细菌 (*Sphingobacterium thermophilum* X1, *Pseudoxanthomonas byssovorax* X3,和 *Bacillus velezensis* 15F) 被用作DGW堆肥的单个和复合注射剂.
- 分析了物理化学性质,堆肥过程的持续时间和P. ostreatus*生长参数 (菌殖民,酶活动).
- 基因组分析确定了关键的微生物功能,并对牛进行了养试验.
主要成果:
- 三种微生物化合物注射显著加速了堆肥,改善了DGW特性,并增强了P. ostreatus的生长和化酶活动.
- 在P. ostreatus*殖民后,堆肥的DGW显示了较低的红素含量 (5%) 和较高的蛋白质度 (130g/kg DM).
- 用60%DGW料养的牛每天体重增加0.4公斤/天.
结论:
- 三种本土微生物的复合注射剂对DGW的堆肥和促进*P. ostreatus*生长是有效的.
- 这种微生物处理通过减少红素和增加蛋白质含量,显著提高了动物料的DGW质量.
- 堆肥DGW显示出作为一种可持续和有效的牛料补充剂的承诺,提高了生长性能.
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