Advanced Water Management Centre, Gehrmann Building, The University of Queensland, Brisbane, Queensland 4072, Australia.
School of Biological Sciences and Centre for Marine Science, The University of Queensland, Brisbane, Queensland, 4072, Australia.
Curr Opin Biotechnol. 2022 Aug;76:102726. doi: 10.1016/j.copbio.2022.102726. Epub 2022 Apr 28.
Mixed culture purple phototrophic bacteria (PPB) is a rapidly emerging technology for resource recovery from wastewaters. PPB biomass can be used as single-cell protein, with a high protein content complemented by value-added components (e.g. pigments and polyhydroxyalkanoates), merging functionalities within a single product. This has the potential to increase the value and impact the economic feasibility, justifying higher capital costs for PPB photobioreactors for real-life applications. Artificial illumination is prohibitively expensive, and naturally illuminated, outdoor units are a critical next step. However, information required for informed technoeconomic assessment of single-cell protein from PPB is still missing and can only be determined in dedicated larger-scale, outdoor systems. Larger scale units are also required to supply feed for larger cohort trials. Although data from microalgae research can be used as starting point to estimate costs, they cannot be translated directly for PPB, as the organisms and metabolic growth are fundamentally different.
混合培养紫色光合细菌（PPB）是一种从废水中回收资源的新兴技术。PPB 生物质可以用作单细胞蛋白，其高蛋白含量辅以增值成分（例如色素和聚羟基脂肪酸酯），在单个产品中融合多种功能。这有可能提高价值并影响经济可行性，从而为实际应用中的 PPB 光生物反应器带来更高的资本成本。人工照明非常昂贵，而自然光照的户外设备则是下一步的关键。但是，对于从 PPB 中提取单细胞蛋白进行知情技术经济评估所需的信息仍然缺失，只能在专门的更大规模的户外系统中确定。更大规模的装置还需要为更大规模的队列试验提供饲料。尽管可以使用微藻研究的数据作为估算成本的起点，但由于生物体和代谢生长的根本不同，这些数据不能直接转化为 PPB。
