Protein Hydrolysates from Animal Residues for Lactic Acid Fermentations: Comparative Study of Different Raw Materials and Methods of Hydrolysation

S. Gehrmann, E. Weber, F. Geurden, R. Wongwishyakorn & B. Kunz
Growing meat consumption over the past centuries has caused higher amounts of animal by­products. As a consequence of the BSE crisis, established treatments are either not allowed anymore or too expensive. Because of their high protein content, animal by­products, such as animal meals, could be used as low­cost nitrogen sources in fermentation media. Lactic acid has recently gained interest due to its application in poly(lactic acid), a biodegradable biopolymer with promising properties. Before use in...