在双膜生物膜反应堆中,微生物将甲转化为单细胞蛋白质
Yicheng Ma1, Tao Liu1, Zhiguo Yuan2
1Australian Centre for Water and Environmental Biotechnology, The University of Queensland, St. Lucia, QLD 4072, Australia.
Water research
|May 22, 2025
概括
这项研究开发了一种双膜生物膜反应器,用于从甲中生产单细胞蛋白 (SCP),实现100%的甲利用率和高产量. 该反应堆为可持续的微生物蛋白质生产提供了一种安全有效的方法.
科学领域:
- 生物技术是生物技术.
- 可持续的粮食生产可持续的粮食生产
- 微生物工程 微生物工程
背景情况:
- 单细胞蛋白 (SCP) 是一种可持续的蛋白质来源,以满足全球需求.
- 甲为SCP生产提供了具有成本效益和可再生的基板.
- 关于甲和氧气输送的安全问题阻碍了以甲为基础的SCP生产.
研究的目的:
- 设计和评估一个双膜生物膜反应堆 (dMBfR),以安全高效地从甲生产SCP.
- 通过比较不同的通风模式和收获比率来优化反应堆性能.
- 为了评估产生的SCP的质量,用于潜在的食品应用.
主要方法:
- 一个带有空洞纤维膜的双膜生物膜反应器 (dMBfR) 设计用于甲和氧气的输送.
- 该反应堆运行了240天,以评估甲利用率,SCP产量和生物质生产率.
- 评估了通风模式 (开放式与死结式) 和蛋白质收获比率 (20%与50%).
- 使用冷干燥来生产干燥的SCP产品以进行质量评估.
主要成果:
- 该dMBfR实现了100%的甲利用效率和0.49g SCP/g CH4.4的最大SCP产量.
- 该反应堆的蛋白质含量为50.2%,生物质生产率为506 mg/L/d.
- 与死结模式相比,开放式通风显著提高了SCP生产率和产量.
- 与鱼粉相比,冷干燥的SCP表现出更高的溶解度,保持水的容量和乳化稳定性.
结论:
- dMBfR为以甲为基础的SCP生产提供了安全高效的系统.
- 优化的通风和收获策略可以进一步提高SCP的产量和质量.
- 生产的SCP的高质量表明其作为可持续的替代蛋白质来源的潜力.
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