Effect of a Teucrium polium L. extract on the growth and fatty acid composition of Saccharomyces cerevisiae and Yarrowia lipolytica.

Aqueous Teucrium polium extract slightly inhibits the growth of Saccharomyces cerevisiae (Ki = 0.029 [g/l]-1) and Yarrovia lipolytica (Ki = 0.06l [g/l]-1). However, this extract causes important changes in the unsaturation degree (delta/mol) of the cellular lipids. It moreover favours the increase of the linolenic acid concentration and the decrease of the oleic one in both species.