通过固态发酵生产新型生物刺激剂细菌外聚糖,作为农业食品废弃物的回收利用策略
Enric Garcia-Muchart1, Oscar Martínez-Avila2, Laura Mejias1
1BETA Tech Centre (TECNIO Network), University of Vic-Central University of Catalonia, Ctra. de Roda 70, 08500, Vic, Spain.
概括
细菌外聚糖 (EPS) 可以促进植物生长和抗压力. 这项研究优化了使用农业食品废物和Burkholderia cepacia的EPS生产,证明了可持续的生物刺激剂方法.
科学领域:
- 农业科学 农业科学
- 生物技术是生物技术.
- 环境科学 环境科学
背景情况:
- 细菌外聚糖 (EPS) 被认为是植物生物刺激剂,增强营养吸收,保持水分和抗压力.
- 与传统基板相比,农业食品副产品为细菌EPS生产提供了可持续和成本有效的碳来源.
研究的目的:
- 通过固态发酵 (SSF) 使用农业食品废物生产细菌EPS.
- 使用Burkholderia cepacia和生汁废物 (GJW) 优化EPS生产.
- 评估这种方法在农业食品行业的循环经济框架内的潜力.
主要方法:
- 实验室规模的固态发酵 (SSF) 使用六种农业食品残留物和五种细菌菌株.
- 通过过程参数监测,确定最佳的基质-菌株组合 (Burkholderia cepacia与GJW).
- 响应表面方法 (Box-Behnken设计) 用于优化空气流速 (AF),注射剂大小 (IS) 和微量营养素度 (MN).
主要成果:
- 使用生汁废弃物 (GJW) 的Burkholderia cepacia显示了EPS生产最有前途的结果.
- 最佳发酵时间被确定为5天.
- 在优化条件下,每克干物质 (DM) 产生71.1 (±3.2) 毫克原始EPS,具有特定的AF,IS和MN值.
结论:
- 农业食品废物,特别是GJW,可以有效地用于细菌EPS生产.
- 优化的SSF工艺证明了生产植物生物刺激剂的可行方法.
- 这种方法通过利用废物流来支持农业食品行业融入循环经济.
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