6[2]Kimmel S A,Roberts R F,Ziegler G R.Optimization of exopolysaccharide production by L.delbrueckiisubsp.bulgaricus RR grown in a semidefined medium[J].J of Applied and Envir Micro,1998,64:659~664.
7[3]Gamar-Nourani L,Blondeau K,Simonet J M.Influence of culture conditions on exopolysaccharide production by L.delbrueckii subsp.bulgaricus strain C83J[J].J of Applied Micro,1998,85:664~672.
8Ana M Marques, Inmaculada Estanol,Joan M Alsina,et al.Production and rheological properties of the extracellular polysaccharide synthesized by pseudomonas sp. strain EPS - 5028[J].Applied and Environmental Microbiology, 1986, 52(5):1221-1223.