Medicine and Health Sciences Commons^™

Catabolism Of Amino Acids To Volatile Fatty Acids By Lactococcus Lactis, Balasubramanian Ganesan

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Lactic acid bacteria are essential as flavor producers of cheese and fermented products. They are capable of catabolizing aromatic, branched chain, and sulfur amino acids to flavor compounds. During cheese ripening the numbers of lactococcal colonies decrease, but lactococci survive without replication in culture. This prompted an investigation into possible mechanisms of catabolism of branched chain amino acids into branched chain fatty acids and the physiological relevance of amino acid catabolism to the bacteria. We hypothesized that lactococci catabolize branched chain amino acids to branched chain fatty acids during nonculturability.

Lactococci, lactobacilli, and brevibacteria catabolized both branched chain amino acids …