Abstract

Fractionation of green biomass often results in fractions with insufficient protein content or quality for food or feed. To understand ways forward, we evaluated the fate of nitrogen (N) and the food or feed suitability of six pilot-scale fractions. The N was present mainly as amino acids (AA) in all fractions (<87%), however, the protein was partly degraded or insoluble in the majority of samples. All protein types and AAs traveled similarly through the fractionation process, giving insignificant separation of RuBisCO versus other proteins, and essential versus nonessential AAs. Water-soluble N compounds were enriched in juice fractions (90-95%), while the protein fractions contained the highest insoluble protein content (13-17%). AA composition in pulp and green juice verified their suitability as feed for ruminants and pigs, respectively. Fractionation of green biomass for food and feed is indeed important, although for sustainable industrial applications, further evaluations are required regarding process feasibility, antinutritional components, and brown juice uses.

Keywords

biorefinery; plant protein; sustainable foodproduction; protein shift; local protein feed

Published in

ACS food science & technology
2024, Volume: 4, number: 1, pages: 126-138
Publisher: AMER CHEMICAL SOC

SLU Authors

• Nynäs, Anna-Lovisa

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Berndtsson, Emilia

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Newson, William

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Persson Hovmalm, Helena

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

• Johansson, Eva

  • Department of Plant Breeding, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Food Science


Publication identifier

DOI: https://doi.org/10.1021/acsfoodscitech.3c00426

Permanent link to this page (URI)

https://res.slu.se/id/publ/128276