Multidimensional omics evaluation of the feather hydrolysates produced by Bacillus subtilis natto as a safe and functional feed protein.
Feather keratin is an abundant but poorly utilized protein resource for animal nutrition due to its highly recalcitrant structure. Here, we investigated whether the food-grade probiotic Bacillus subtilis natto can directly hydrolyze intact chicken feathers and evaluated the resulting fermentation product as a safe and...