Green2 Feed – Sustainable animal feed and biogas from green leaves

Last changed: 08 March 2024

To become a bioeconomy for real – how do we solve issues about sustainable protein feed and renewable energy?

In order to increase substantially production of biogas that replaces fossil fuels we need vast amounts of biomass that agriculture can supply without affecting current food and feed production. But instead of digesting the green biomass from ley crops, sugar beet tops and other residues directly, Green2Feed aims to extract plant protein that can be used as feed for e.g. pigs and cows. The green biomass is separated in several fractions that are suitable as protein-rich animal feed while other fractions serve as feedstock for biogas production. This combined production enables replacement of fossil fuels and e.g. imported soya protein, with low control of sustainability. The ecological footprint of the Green2Feed process is expected to be much lower than that of the replaced products, as plant nutrients and organic carbon are returned to arable land in the form of digestate.


Nynäs, A.-L., E. Berndtsson, W. R. Newson, H. P. Hovmalm and E. Johansson (2024). Protein Fractionation of Leafy Green Biomass at the Pilot Scale: Partitioning and Type of Nitrogen in the Fractions and Their Usefulness for Food and Feed. ACS Food Science & Technology. 

Cover to the ACS Food Science and Technology volume 4 issue 1, 19 January 2024.


The project is funded by: Swedish Energy Agency via the Bio+ program

Duration of the project: 2022-2025

Project Leader: Thomas Prade (SLU-BT)

Other contributors: Eva-Johansson (SLU-PB), Bill Newson (SLU-PB), Sabine Täuber (BiogasSyd), Ulf Jobacker (Energikontoret), Sven-Erik (SLU-BT), Andreas Berg (Gasum), Carolina Johansson (Svenska Foder), Kerstin Sigfridson (Lantmännen)