Production of Protein Hydrolysates and Bioactive Peptides From Lablab purpureus and Macrotyloma uniflorum via Optimized Extraction and Proteolysis Protocols.
Yadav C, Yadav P, Joshi A, Arora J
Sustainable Protein
Hyacinth bean, the sprawling purple-flowered vine many gardeners grow as an ornamental, turns out to be one of the most protein-extractable legumes tested — meaning that showy trellis plant is also a serious food crop hiding in plain sight.
Scientists compared five ways to pull protein out of two tough, drought-tolerant beans that most of the world ignores. They found that using sound waves (ultrasound) to break open the bean cells worked best, getting nearly 84% of the protein out of hyacinth bean and 78% from horse gram. The two plants behaved differently under the same conditions, which means each needs its own tailored approach — not a one-size-fits-all method.
Key Findings
Ultrasound-assisted extraction achieved the highest protein yield: 84.02% for hyacinth bean and 78.4% for horse gram at 40% power over 10–15 minutes.
Alkaline-acid precipitation gave the highest recovery rate (88.4%) but lost more protein during processing, making it less efficient overall.
Hyacinth bean (Lablab purpureus) consistently yielded more extractable protein than horse gram, likely due to differences in seed structure — meaning species-specific protocols are necessary.
chevron_right Technical Summary
Researchers tested five methods to extract protein from two underused legumes — hyacinth bean and horse gram — and found that ultrasound-assisted extraction outperformed traditional techniques, recovering up to 84% of usable protein. This opens the door to scaling these drought-tolerant crops as sustainable protein ingredients for food and nutrition products.
Abstract Preview
The rising global demand for sustainable, plant-based protein sources necessitates the exploration of underutilized legumes with high nutritional potential. This study systematically evaluates and ...
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Lablab purpureus is a species of bean in the family Fabaceae. It is native to sub-Saharan Africa and it is cultivated throughout the tropics for food. English language common names include hyacinth bean, lablab-bean bonavist bean/pea, dolichos bean, seim or sem bean, lablab bean, Egyptian kidney ...