Yeast extract and peptone (bacteriological grade) were purchased from TM Media (Titan Biotech Ltd., India). Glucose (analytical grade) was purchased from KemAusTM, Australia. Sorbitol and ethanol (HPLC grade) were procured from Sigma − Aldrich (St. Louis, MO, USA). Agar (bacteriological grade) and other chemicals, such as zinc sulfate (ZnSO4.7H2O), calcium chloride (CaCl2), iron sulfate (FeSO4.7H2O), magnesium sulfate (MgSO4.7H2O), manganese sulfate (MnSO4.H2O), and copper sulfate (CuSO4.5H2O) (analytical grade) were obtained from a local supplier (CLS supply and Services, Ltd. Part., Khon Kaen, Thailand).
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