Use of the effluent from biogas production for cultivation of Spirulina.
Use of the effluent from biogas production for cultivation of Spirulina.
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DOI：
10.1007/s00449-016-1726-2
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发表时间：
2017-04
影响因子：
3.8
通讯作者：
Asp H
中科院分区：
文献类型：
--
作者：
Hultberg M;Lind O;Birgersson G;Asp H
将沼气发酵过程中产生的废水作为营养源培养富含蛋白质的可食用微藻螺旋藻（Arthrospira platensis），并与传统的螺旋藻培养基进行比较。相等的生物量生产，直到后期指数阶段，可以观察到的蛋白质量，氨基酸组成和总脂质浓度的治疗之间没有显着差异。藻蓝蛋白的浓度在螺旋藻培养基和基于废水的培养基之间存在显著差异（分别为63.3 ± 11.7和86.2 ± 1.9 mg g−1）。略高浓度的饱和脂肪酸，主要是棕榈酸，观察到在螺旋藻培养基中产生的生物质比在基于废水的培养基中产生的。在基于废水的培养基中产生的生物质中，镉浓度为0.07 ± 0.05 mg kg−1干重，而在螺旋藻培养基中产生的生物质中，镉浓度低于检测限。有必要确定新的食品和饲料资源，未来可能的方案是将螺旋藻生产整合到沼气厂生产蛋白质，因为它含有超过60%的蛋白质干重。在这种情况下，重要的是控制供应给螺旋藻的生物气浆中的重金属浓度。
The effluent from the biogas process was tested as a nutrient source during cultivation of the protein-rich and edible microalgae Spirulina (Arthrospira platensis) and compared with conventional Spirulina medium. Equal biomass production was observed until late exponential phase and no significant differences could be observed between the treatments in protein amount, amino acid composition, and total lipid concentration. The concentration of the pigment phycocyanin differed significantly between Spirulina medium and the effluent-based medium (63.3 ± 11.7 and 86.2 ± 1.9 mg g−1, respectively). Slightly higher concentrations of saturated fatty acids, mainly palmitic acid, were observed in the biomass produced in Spirulina medium than in that produced in the effluent-based medium. In the biomass produced in the effluent-based medium, the cadmium concentration was 0.07 ± 0.05 mg kg−1 of dry weight, whereas it was below the detection limit in the biomass produced in Spirulina medium. There is a need to identify new food and feed resources and a possible future scenario is to integrate Spirulina production into the biogas plant for protein production as it contains more than 60% of protein on dry weight basis. In that scenario, it is important to control heavy metal concentrations in the biogas slurry fed to Spirulina.