Environmental performance of microbial-protein based feed in relation to planetary boundaries

Valentina Pusateri, Borja Valverde Pérez, W. Verstraete, C. Zamalloa, E. De Gussem, Mikolaj Owsianiak

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Abstract

Microbial protein (MP) has been proposed as a more sustainable protein source compared to soymeal or fishmeal. However, it is not known how MP-based feed compares to alternative protein sources in a life cycle perspective, and whether it can be considered sustainable in absolute terms. Using life cycle assessment (LCA) combined with Planetary Boudnaries we showed that environmental performance of MP-based feed is generally comparable to that of soybean. We also showed and that in most, but not all, cases impact scores are within the assigned share of the safe operating space. Environmental performance of MP-based feed was found to depend largely on downstream process, namely production of energy that is used for centrifuging and drying. Our results suggest that despite being relatively immature technology, heterotrophic MP-based feed has the potential to become sustainable in absolute terms.
Original languageEnglish
Publication date2020
Number of pages4
Publication statusPublished - 2020
EventIWA Nutrient Removal and Recovery Conference 2020 - Helsinki, Finland
Duration: 8 Jun 202012 Jun 2020

Conference

ConferenceIWA Nutrient Removal and Recovery Conference 2020
CountryFinland
CityHelsinki
Period08/06/202012/06/2020

Keywords

  • Microbial protein
  • Sustainability assessment
  • Nitrogen recovery

Cite this

Pusateri, V., Valverde Pérez, B., Verstraete, W., Zamalloa, C., De Gussem, E., & Owsianiak, M. (2020). Environmental performance of microbial-protein based feed in relation to planetary boundaries. Paper presented at IWA Nutrient Removal and Recovery Conference 2020, Helsinki, Finland.