Autotrophic and heterotrophic microalgae and cyanobacteria cultivation for food and feed: life cycle assessment

Sep 12, 2017Bioresource technology

Environmental impact of growing self-feeding and other microalgae and cyanobacteria for food and animal feed

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Abstract

Onsite production of microalgae could significantly reduce the lack of protein sources in Europe.

  • Microalgae cultivation in autotrophic and heterotrophic systems shows potential economic and environmental benefits.
  • Life cycle assessment indicates that microalgae protein powders have a higher environmental impact compared to traditional protein concentrates.
  • High-moisture extrusion of heterotrophic cultivated Chlorella vulgaris resulted in a more environmentally sustainable product than pork and beef.
  • Optimizing production with Chlorella pyrenoidosa on hydrolyzed food waste may reduce environmental impact by 4.5 times.

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