Fish protein hydrolysates as peptones in microbiological culture medium

The growing volume of unutilized rest raw material throughout the world, notably in Norway, prompted a research into its prospective usage. In the current study, cod protein hydrolysates were utilized as peptones in microbiological growth medium. The hydrolysates were generated using several enzymatic systems and dried using various drying processes to assess the impact of processing on their use as peptones. Staphylococcus aureus and Salmonella enteriditis strains were employed as test strains. The generated microbiological culture medias based on peptones from fish protein hydrolysates were compared to an industrially manufactured reference media. When compared to the reference, the studied medias typically demonstrated equivalent or greater development of the test strains. The effects of the enzymatic system and drying process on the development of the tested strains were investigated and discussed.