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Synonym edit
Suggest this could be combined with trophobiosis Roy Bateman (talk) 14:37, 2 January 2017 (UTC)
Protocooperation edit
culture. S. thermophilus produces pyruvic acid, formic acid, folic acid, ornithine, long-chain fatty acids, and CO2 which stimulates the growth of L. bulgaricus. The acid lowers the pH of the milk to an optimal level for L. bulgaricus. L. bulgaricus produces peptides, free amino acids, and putrescine through proteolysis, which stimulate the growth of S. thermophilus. Shxfngy (talk) 10:51, 8 May 2024 (UTC)