高玉米负荷对半连续反应堆中短链脂肪酸生产的影响
Jinsong Liang1, Panyue Zhang2, Le Chen2
1School of Energy & Environmental Engineering, Hebei University of Technology, Tianjin 300130, China.
Bioresource technology
|February 1, 2024
概括
鲁米纳微生物有效地将生物质废物转化为短链脂肪酸 (SCFA). 尽管减少了挥发性固体的去除和细菌的多样性,但在炉中8%的玉米料负载是SCFA生产的最佳条件.
科学领域:
- 微生物学 微生物学
- 生物技术是生物技术.
- 环境科学 环境科学
背景情况:
- 鲁米纳微生物可以分解生物质废物.
- 在高负荷下持续的短链脂肪酸 (SCFA) 生产并未得到充分理解.
研究的目的:
- 为了研究在高负载下SCFA生产的半连续反应器的有效性.
- 分析增加玉米吸管负载对SCFA产量,挥发性固体去除,微生物群落和基因表达的影响.
主要方法:
- 采用了鲁门半连续反应器.
- 测试了不同的玉米吸管负载 (w/v).
- 分析了SCFA度,挥发性固体的去除,肠微生物群体组成 (细菌多样性和丰富性) 和功能性基因表达.
主要成果:
- 在8%的玉米草负载下,SCFA度达到13.3g/L.
- 较高的玉米吸管负载减少了挥发性固体的去除.
- 细菌的多样性和丰富性在8%的负载下降,Prevotella,Sacharofermentans和Ruminococcus的增加.
- 水解和酸性生成基因表达随着负载的增加而增加.
结论:
- 8.0%的玉米草负载适合使用食者微生物生产SCFA.
- 高负荷发酵会影响微生物群体的结构和功能.
- 研究结果为优化从生物质废物中生产SCFA提供了洞察力.
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