生物气泥循环调节食物废物发酵:影响和机制
Luxin Yang1, Liang Chen1, Chuyun Zhao1
1Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
Journal of environmental management
|September 25, 2023
概括
将生物气泥添加到食品废弃物发酵中可以促进有机酸的产生. 特定的比例有利于乳酸或混合酸,如黄油和酸,受到微生物变化的影响.
科学领域:
- 生物技术是生物技术.
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 众所周知,添加沼气泥增强了沼气生产.
- 它对发酵中的有机酸和酒精合成的影响尚不清楚.
- 食品废弃物是有价值的复合物回收的潜在基质.
研究的目的:
- 调查不同生物气泥添加比对有机酸和酒精生产的影响.
- 了解驱动这些变化的潜在微生物机制.
- 优化发酵条件,以产生特定的有价值产品.
主要方法:
- 进行了食品废物的半连续发酵.
- 在反应堆中添加了不同比例的沼气泥.
- 分析了有机酸和酒精度.
- 评估了微生物社区的结构和活动.
主要成果:
- 添加比为0.2显著增加了乳酸产量 (0.38 g/g VS).
- 0.4的比率导致混合酸发酵,以n-黄油酸和n-酸为主.
- 生物气泥引入了Bifidobacteriaceae,增强了乳酸的生产.
- 特定的微生物群体通过逆β-氧化促进了酸和酸合成.
结论:
- 添加沼气泥会改变发酵途径和产品形状.
- 微生物社区的转移是有机酸生产的关键驱动力.
- 优化生物气泥比率可以将食品废弃物发酵引导到所需产品.
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