Mushroom Peptides Could Make Food Taste Salty With Less Sodium
A Chinese research team found that small peptides from beech mushrooms can increase perceived saltiness by up to 70 percent without adding sodium. The scientists used enzymes, including trypsin, to break mushroom proteins into peptides and catalogued more than 6,000 sequences. The discovery may support food-ingredient strategies for reducing sodium while keeping a salty taste.
Researchers focused on Hypsizygus marmoreus, the beech mushroom, because it is valued for savory taste. Earlier shiitake studies had shown that protein fragments can strengthen salty flavor, prompting the team to ask whether beech mushrooms contain similar molecules.
Enzymatic digestion, especially with trypsin, generated a promising peptide mix. The team catalogued 6,092 sequences, used computational screening to shortlist five, and tested them with 14 trained panelists. Three peptides stood out: ASHGEGF raised saltiness by 70.59%, while LDDGF and GDDWT produced gains of 49.02% and 47.06%. An electronic tongue also detected stronger responses.
If validated beyond small sensory tests, such peptides could give food makers a new tool for lowering sodium in processed and prepared foods while preserving salty taste. That may benefit consumers advised to cut salt, especially those at risk of high blood pressure, though real-world impact would depend on further safety and stability testing, production cost, labeling, and whether people accept mushroom-derived ingredients.