Lactic bacteria producing exopolysaccharides

摘要

A chromosomal DNA fragment coding for one or more enzymes involved in the biosynthesis of an exopolysaccharide (EPS) is claimed, where the fragment is capable of restoring EPS prodn. upon transformation of a non-EPS-producing lactic acid bacterium or of modifying EPS structure upon transformation of an EPS-producing lactic acid bacterium.