使用污水和奶酪乳糖生产多基酸
Young-Cheol Chang1, M Venkateswar Reddy2, Yusei Tsukiori1
1Course of Chemical and Biological Engineering, Division of Sustainable and Environmental Engineering, Muroran Institute of Technology, Hokkaido, 050-8585, Japan.
Heliyon
|December 25, 2023
概括
这项研究使用Bacillus sp.从废水中增强了聚酸酸盐 (PHA) 的产生. 在CYR1.1.中使用. 用葡萄糖补充污水,使用奶酪乳清提升PHA产量显著.
科学领域:
- 生物技术是生物技术.
- 环境微生物学 环境微生物学
- 聚合物科学 聚合物科学
背景情况:
- 聚酸酸盐 (PHAs) 是一种具有潜在应用的可生物降解聚合物.
- 目前的PHA生产方法经常面临产量和成本效益的限制.
- 使用废水作为基质为PHA生物合成提供了一种可持续的方法.
研究的目的:
- 使用Bacillus sp.从原始污水中增强聚酸酸盐 (PHA) 的生产. 在CYR1.1.中使用.
- 研究营养补充和不同废水成分对PHA产量的影响.
- 在不同的碳和条件下分析PHA合成酶基因 (phaC) 的表达.
主要方法:
- 培养Bacillus sp.的种植方式 污水基介质中的CYR1含有不同的补充剂 (葡萄糖,奶酪乳糖).
- 量化PHA生产和葡萄糖消耗.
- 实时聚合酶连锁反应 (RT-PCR) 来评估phaC基因表达.
- 生产的PHA的特征.
主要成果:
- 与矿物盐介质相比,在含有污水的介质中,PHA的产生显著更高.
- 葡萄糖补充剂导致PHA产量增加了22倍,葡萄糖消耗量达到83.6%.
- 与蒸水稀释相比,用污水稀释奶酪乳酪增加了PHA的产生.
- 在高碳,低污水中观察到更高的phaC基因表达.
- 生产的PHA特性与标准PHA相比.
结论:
- 巴西勒斯种类 (Bacillus sp.) 的存在 CYR1有效地从低碳和高碳废水中产生聚酸酸盐 (PHAs).
- 战略性补充碳来源,如葡萄糖和辅助基质,如奶酪乳清,可以大大提高PHA产量.
- 基于废水的PHA生产是可行的,可以通过操纵营养度和基因表达来优化.
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