上循环食品废弃物消化成单细胞微藻蛋白通过混合营养培养方法
Sheetal Kishor Parakh1, Yen Wah Tong1
1Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore.
Journal of environmental management
|May 17, 2025
概括
使用Chlorella sorokiniana的混合培养将食物废物消化剂转化为单细胞蛋白质是有效的. 这一过程增强了生物质生产和营养物质的去除,为城市食品废物管理提供了可持续的解决方案.
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:
- 城市食品废物的无氧消化产生消化物,这给处置带来了挑战.
- 有效地利用消化剂对于可持续的废物管理和无氧消化采用至关重要.
- 将消化物转化为像单细胞蛋白质这样的有价值产品是一个尚未探索的领域.
研究的目的:
- 研究Chlorella sorokiniana的混合培养,以将食物废物衍生的消化物 (FWD) 转化为单细胞蛋白质.
- 为了优化种植条件,包括消化剂稀释和营养丰富.
- 评估不同有机碳来源 (葡萄糖和酸盐) 和有机碳与 (有机-C/N) 比率对生物质生产,蛋白质含量和氨- (NH4+-N) 去除的影响.
主要方法:
- 食品废弃物衍生的消化剂 (FWD) 液分被稀释至10%并富含必要的宏观和微量营养素.
- 使用葡萄糖和酸盐在各种有机-C/N比率下进行了Chlorella sorokiniana UTEX 1230的混合培养.
- 测量和分析了生物质度,蛋白质含量和NH4+-N去除率.
主要成果:
- 最佳的有机C/N比率为葡萄糖的5和酸盐增强生物质度和NH4+-N去除的10.
- 有机C/N比率为5的葡萄糖产生了最高的生物质 (2.5g/L).
- 生物质蛋白质含量达到40-41%的葡萄糖,超过乙酸盐 (34-36%),和总蛋白质的生产增加了更高的有机-C/N比率.
结论:
- 混合培养是一种高效的策略,用于将FWD转化为有价值的单细胞蛋白质.
- 这种方法显著提高了生物质产量和氨-去除效率.
- 该研究展示了一种可持续的方法来提升食品废弃物消化物的价值,为循环经济原则做出贡献.
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