一种创新的方法,通过铁尾改进食品废弃物中的乳酸生产
Xiaoyu Ma1, Kun Liu1, Menglu Wang2
1China Institute of Geo-Environment Monitoring, China Geological Survey, Beijing 100081, China.
Bioresource technology
|June 26, 2024
概括
在食品废弃物发酵过程中添加铁尾 (IT) 显著提高了乳酸 (LA) 生产和碳水化合物的消化能力. 这种可持续的方法还有利于从铁尾矿中去除重金属.
科学领域:
- 生物技术和可持续的废物管理
- 环境科学与工程环境科学与工程
- 微生物发酵过程
背景情况:
- 食品废弃物 (FW) 构成了重大处置挑战,需要创新的价值化策略.
- 乳酸 (LA) 是一种有价值的平台化学物质,具有多种工业应用.
- 铁尾矿 (IT) 是工业副产品,通常需要修复和安全处置.
研究的目的:
- 研究使用铁尾 (ITs) 来增强食物废物 (FW) 乳酸 (LA) 发酵的可行性.
- 阐明ITs影响LA生产和基质消化的机制.
- 评估IT对微生物群落动态和发酵过程中重金属去除的影响.
主要方法:
- 发酵实验是用不同度的IT添加到食品废弃物基板上进行的.
- 乳酸产量和碳水化合物消化能力是使用既有分析方法量化.
- 使用高通量测序技术分析了微生物社区的组成.
- 测量了IT和发酵中的重金属度,以确定去除效率.
主要成果:
- 1%的最佳ITs度导致LA的最大产量为0.91gLA/g总糖.
- 通过促进水解,ITs的添加提高了碳水化合物的消化能力,达到88.85%.
- 微生物分析显示,乳球菌占主导地位的转变,与LA生产和消化能力有积极的相关性.
- 对重金属 (Cr,As,Pb,Cd,Hg) 观察到显著的去除效率,高达Hg的78.87%.
结论:
- 铁尾矿可以通过减轻酸化和减少等价供应,有效地促进食物废物的乳酸发酵.
- 添加IT增强了基质的可用性,并改变了微生物群落结构,有利于LA生产.
- 这项研究表明,IT使用具有双重好处:增强LA生产和同时从工业废物中回收重金属.
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