通过添加水解活性微生物来增强食品废物的有氧堆肥
Vladimir Mironov1, Vitaly Zhukov1, Kristina Efremova1
1Winogradsky Institute of Microbiology, Federal Research Center of Biotechnology, Russian Academy of Sciences, Moscow, Russia.
Frontiers in microbiology
|December 17, 2024
概括
添加特定的细菌,比如Bacillus spp. 在食品废弃物的开始时,堆肥显著增加了二氧化碳的产量. 引入像Penicillium spp.这样的真菌. 后来还加速了堆肥,表明注射时间是有效降解食物废物的关键.
科学领域:
- 环境微生物学 环境微生物学
- 废物管理 废物管理
- 生物技术是生物技术.
背景情况:
- 食品废弃物 (FW) 中的本地微生物种群往往不足以快速堆肥.
- 提高FW生物降解需要引入具有高水解活性的微生物.
- 优化微生物社区结构可以加速堆肥过程.
研究的目的:
- 为了确定用于加速FW堆肥的细菌和真菌菌株.
- 为了评估本土百菌和菌种类的影响. 在FW堆肥上进行注射.
- 为了确定FW堆肥中微生物接种的最佳时间.
主要方法:
- 在7周的时间里,试验性地对FW进行堆肥.
- 用10种Bacillus和Penicillium spp.的混合物进行注射 菌株在开始时或在28日.
- 测量二氧化碳 (CO2) 和氨 (NH3) 产量,以及温度变化.
主要成果:
- 早期接种Bacillus spp.的疫苗. (B. amyloliquefaciens,B. subtilis) 的二氧化碳产量增加了三倍,稳定了NH3和温度.
- 细菌的优势导致发酵,温和的热量和高挥发性有机化合物.
- 晚期用Penicillium spp.进行接种. (第28天) 的二氧化碳产量翻了一番,NH3和温度上升.
结论:
- 微生物注射策略显著影响FW堆肥效率.
- 接种时间 (早期或晚期) 和微生物组成 (Bacillus vs Penicillium) 决定了代谢途径.
- 结果为开发有效的微生物配方提供了洞察力,用于加速FW堆肥.
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