一种基于森林垃圾的生物肥料的生物化学和微生物特征,该生物肥料是通过在不同初始氧度下发酵而在批量培养中生产的
Alejandra Gutierrez1, Catherine Rébufa1, Anne-Marie Farnet Da Silva1
1IMBE, Aix Marseille Univ, Avignon Univ, CNRS, IRD, Marseille, France.
World journal of microbiology & biotechnology
|October 17, 2024
概括
这项研究优化了使用发酵森林垃圾 (FFL) 的有机肥料生产. 2%的初始氧度 (IOC) 平衡了有益的微生物生长,并确保了无病原体的产品.
科学领域:
- 农业科学 农业科学
- 微生物学 微生物学
- 生物化学 生物化学
背景情况:
- 有机肥料增强土壤健康和植物生长.
- 发酵森林垃圾 (FFL) 提供了一个可持续的营养来源.
- 农业工业副产品可以用于肥料生产.
研究的目的:
- 来自FFL和副产品的新有机肥的特征.
- 为了研究初始氧度 (IOC) 对发酵的影响.
- 确定微生物活动和产品安全的最佳条件.
主要方法:
- 在密封瓶中的FFL和副产品的批量培养.
- 分析头部空间气体 (CO2,乙醇,乙烯酸乙烯).
- 红外光谱学用于有机物质降解.
- BIOLOG® 生态板用于微生物的代谢潜力和多样性.
- pH和微生物群体分析 (LAB,真菌,肠杆菌).
主要成果:
- 严格的无氧化 (0% IOC) 导致了低二氧化碳的产生和较差的有机物质降解.
- 牛奶发酵在0%的IOC中占主导地位,LAB的丰富和病原体的缺失.
- 增加IOC增强了呼吸计活动和微生物多样性,但存在超过5%IOC的肠细菌存在的风险.
- 2%的IOC被认为是最佳的,平衡了LAB的发展,功能多样性和病原体的缺失.
结论:
- 氧气的可用性极大地影响了发酵过程和最终产品的质量.
- 低,受控的IOC (2%) 对于生产安全有效的有机肥来说至关重要.
- 这种优化的发酵过程产生了富含乳酸细菌和无病原体的生物产品.
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