Membrane filtration produces high-quality proteins from clover grass and lucerne, suggesting a plant-based alternative may lower greenhouse gas emissions.
Unlocking sustainable proteins: Clover grass and lucerne as a future food source The world faces a dual challenge: reducing the environmental impact of food production while ensuring a sustainable supply of high-quality proteins. New membrane filtration method enables us to produce food-grade proteins free of green color, grassy taste and odor. The protein challenge Traditional animal-based protein sources are resource-intensive and contribute significantly to greenhouse gas emissions. Yet, proteins—especially those containing essential amino acids—are vital for human nutrition. Clover grass and lucerne, currently used as livestock feed for ruminants, offers a promising plant-based alternative for humans. These crops grow without pesticides, require little to no fertilizer, support carbon and nitrogen sequestration, and thrive even during droughts due to their deep roots. Their long growing season and high protein yield per hectare make them ideal candidates for sustainable agriculture. Further, they reduce nutrient leakage to ground water and to nearby water systems such as lakes, creeks and fjords.
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Mette Lübeck (2025) studied this question.
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