Scientists Develop Cost-Effective Method to Extract Protein from Dried Leafy Vegetables
Researchers have developed a simple, scalable process to extract RuBisCO, Earth's most abundant protein, from dried leafy biomass like spinach, kale, and rocket. The method achieves approximately 70-90% extraction efficiency without resource-intensive processing, addressing a gap since most existing extraction techniques were designed for fresh material. This advancement could enable sustainable plant protein production from agricultural waste, supporting circular economy approaches in food supply chains.
Scientists have created an efficient extraction method for RuBisCO, the world's most abundant protein, from dried leafy vegetables and agricultural residues. The process works with both freshly dried leaves and commercially available leaf powders, yielding approximately 75 mg of high-purity RuBisCO per 100 grams of fresh-leaf equivalent from spinach, with extraction efficiency reaching 70% and increasing to 90% when supplemented with calcium chloride. The recovered protein demonstrated favorable functional properties, including foaming capacity and stability, making it suitable as a food ingredient. This development addresses a significant gap in existing research, as previous RuBisCO extraction methods were primarily designed for fresh material and poorly suited to dried feedstocks. The work supports the development of waste-to-value supply chains by enabling the valorization of dried vegetable residues that are typically discarded in agri-food production.
Limitations & open questions
The article does not discuss scalability challenges, cost comparisons with existing plant protein sources, regulatory approval status for food use, or consumer acceptance of RuBisCO as a food ingredient. Additionally, there is no discussion of potential environmental impacts or energy requirements of the extraction process at commercial scale.
What different sources said
- bioRxivCenter
Rapid and Cost-Effective Preparation of a RuBisCO-Rich Protein Fraction from Dried Leafy Biomass
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