两相微藻种植用于RAS水疗和高价值生物质生产
Valeria Villanova1,2, Jonathan Armand Charles Roques1,3, Bita Forghani4
1Department of Biological and Environmental Sciences, University of Gothenburg, Gothenburg, Sweden.
Frontiers in plant science
|June 28, 2023
概括
微藻有效地修复海洋循环水产养殖系统的废水,产生富含蛋白质,脂肪酸和抗氧化剂的宝贵生物质. 这种综合方法为水产养殖创造了一个可持续的循环经济.
科学领域:
- 水产养殖和环境科学 水产养殖和环境科学
- 微藻生物技术 微藻生物技术
- 废水整治技术 废水整治技术
背景情况:
- 再循环水产养殖系统 (RAS) 产生富含营养的废水,需要有效处理.
- 综合系统通过利用废物流提供循环经济方法.
- 微藻类是废水整治和生物质生产的潜在候选者.
研究的目的:
- 评估微藻用于冷水海洋RAS的废水整治.
- 评估微藻生物质作为高价值化合物的来源的潜力.
- 为水产养殖发展一个创新的,生态可持续的循环经济模式.
主要方法:
- 测试了三种微藻类:纳诺克洛皮斯颗粒 (Nanochloropis granulata, Ng),菲奥达克三角藻 (Pt) 和克洛雷拉sp (Csp).
- 采用了两阶段的培养策略:增长优化,然后是压力诱导的代谢物生产.
- 评估了和酸盐去除效率和生物质组成 (氨基酸,PUFA,胡卜素).
主要成果:
- Ng和Pt实现了高生物质产量 (5-6g DW/L) 和100%的亚酸盐,酸盐和酸盐的去除.
- Csp表现出良好的酸盐和酸盐去除 (76%和100%),产量为3g DW/L.
- 来自所有物种的生物质都富含蛋白质 (30-40%的DW),必需氨基酸 (除 metionin),PUFAs 和抗氧化剂.
结论:
- 经测试的微藻种类显示了海洋RAS废水处理的巨大潜力.
- 两阶段的种植策略有效地提高了生物质产量和高价值代谢物生产.
- 微藻生物质为水产养殖提供了一个可持续的替代性料来源,具有增加的营养价值.
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