Lactic Acid Bacteria Quality Control Sample (Streptococcus thermophilus) - Basic Information

Recommended Medium	Peptone: 10.0g, Beef Extract Powder: 8.0g, Yeast Powder: 4.0g, Glucose: 20.0g, Magnesium Sulfate: 0.2g, Sodium Acetate: 5.0g, Diammonium Hydrogen Citrate: 2.0g, Dipotassium Hydrogen Phosphate: 2.0g, Manganese Sulfate: 0.04g, Tween 80: 1.0g, pH: 5.7±0.2 (25°C)
Growth Conditions	37°C; 48-72h; 5% CO2
Storage Conditions	-20°C
Procedure	Brain Infusion Powder: 5.0g, Heart Infusion Powder: 12.5g, Peptone: 5.0g, Tryptone: 10.0g, Sodium Chloride: 5.0g, Glucose: 2.0g, Disodium Hydrogen Phosphate: 2.5g, Agar: 15.0g (not included in liquid Recommended Medium), pH 7.4±0.2. Sterilize at 121°C for 15 min.
Reference Use	This quality control material was developed by the Henan Provincial Industrial Microbial Strain Engineering Technology Research Center. It is a freeze-dried quality control sample of lactic acid bacteria, suitable for use as a national standard positive control for lactic acid bacteria, method establishment, working standard assignment, method confirmation and evaluation, and product quality control.
Sharing Method	Public Welfare Sharing