Lanes of chromatogram (a): 1, C. xerosis JZ2; 2, C. xerosis JZ3; 3, C. lactis JZ6; 4, C. glutamicum DSM 20300T; 5, C. amycolatum DSM 6922T; 6, C. lactis RW 2-5T; 7, Rhodococcus rhodochrous DSM 43241T; 8, Gordonia terrae DSM 43249T. Lanes of chromatogram (b): 1, C. confusum JZ27; 2, C. variabile JZ20; 3, C. variabile JZ25; 4, C. glutamicum DSM 20300T; 5, C. amycolatum DSM 6922T; 6, C. lactis RW 2-5T; 7, R. rhodochrous DSM 43241T; 8, G. terrae DSM 43249T. Lanes of chromatogram (c): 1, C. callunae JZ13; 2, C. callunae JZ14; 3, C. glutamicum JZ15; 4, C. crudilactis JZ16T; 5, C. glutamicum DSM 20300T; 6, C. amycolatum DSM 6922T; 7, C. lactis RW 2-5T; 8, R. rhodochrous DSM 43241T; 9, G. terrae DSM 43249T.