Co-Product of L-Cysteine Extraction - Feed Ingredient

The co-product of L-cysteine extraction refers to the residual material remaining after L-cysteine, an amino acid, has been isolated from a source substrate—commonly keratin-rich materials such as feathers, hair, or microbial biomass. The extraction process typically breaking down the original proteins to separate individual amino acids from proteins. After L-cysteine is separated and purified, the remaining material contains a mixture of peptides, non-essential amino acids, and other protein fragments.

In animal nutrition, including equine applications, this co-product may be used as a protein-rich ingredient or as a fermentation substrate. Its composition and digestibility can vary depending on the original raw material and the specific extraction and purification methods used.