“…21 A complex variety of fatty acids has been demonstrated as metabolites when C. krusei is grown in culture media containing lactose,22 it is also able to produce a~e t o i n .~~ It also produces a number of shortchain carboxylic acids when cultured in saliva supplemented with glucose ; these include acetate, pyruvate, succinate, propionate, formate and lactate. 24 The biological role of these, if any, is as yet unknown.…”