More than 200 strains producing lipases were screened from a hundred and sixty-five oily soil in Xi'an suburbs and Qinba mountain area,Shaanxi Province,which included bacteria,moulds and yeasts;Ten sour-resistant strains were screened through glyceryl tributyrate plate,one of them that has a higher lipase activity was researched.It was identified as galactomyces geotrichum,by its morphological and 18S rDNA sequences.On the basis of above experiments,a Shaanxi characteristic library of strains producing lipa...