Valorization of food processing effluent (FPE) by microalgae cultivation for astaxanthin production is regarded as a potential strategy to solve the environmental pollution of food processing industry and promote the development of eco-friendly agriculture. In this review paper, microalgal species which have the potential to be employed for astaxanthin in FPE were identified. Additionally, in terms of CO2 emission, the performances of microalgae cultivation and traditional methods for FPE remediation were compared. Thirdly, an in-depth discussion of some innovative technologies, which may be employed to lower the total cost, improve the nutrient profile of FPE, and enhance the astaxanthin synthesis, was provided. Finally, specific effects of dietary supplementation of algal astaxanthin on the growth rate, immune response, and pigmentation of animals were discussed. Based on the discussion of this work, the cultivation of microalgae in FPE for astaxanthin production is a value-adding process which can bring environmental benefits and ecological benefits to the food processing industry and agriculture. Particularly, technological innovations in recent years are promoting the shift of this new idea from academic research to practical application. In the coming future, with the reduction of the total cost of algal astaxanthin, policy support from the governments, and further improvement of the innovative technologies, the concept of growing microalgae in FPE for astaxanthin will be more applicable in the industry.

中文翻译：

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食品加工废水中培养微藻以减少污染和生产虾青素：技术创新和下游应用综述

通过培养微藻生产虾青素来对食品加工废水（FPE）进行增值被视为解决食品加工行业环境污染和促进生态友好农业发展的潜在策略。在这篇综述论文中，鉴定了有潜力用于 FPE 中虾青素的微藻物种。此外，就二氧化碳而言2排放、微藻培养和传统 FPE 修复方法的性能进行了比较。第三，深入讨论了一些可用于降低总成本、改善FPE营养成分和增强虾青素合成的创新技术。最后，讨论了膳食补充藻类虾青素对动物生长速度、免疫反应和色素沉着的具体影响。根据这项工作的讨论，在 FPE 中培养微藻用于虾青素生产是一个增值过程，可以为食品加工业和农业带来环境效益和生态效益。特别是近年来的技术创新正在推动这一新理念从学术研究向实际应用的转变。未来，随着海藻虾青素总成本的降低、政府的政策支持以及创新技术的进一步完善，FPE养殖微藻虾青素的理念将在行业中得到更多应用。