Quantitative strain of Staphylococcus aureus|388949 |BNCC

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Quantitative strains of staphylococcus aureus subsp. aureus Rosenbach

Culture medium	BNCC352232
Description	Tryptic Soy Broth
Composition	Tryptone:17.0g, Soy Peptone:3.0g, NaCl:5.0g, K₂HPO₄:2.5g, Glucose:2.5g, pH:7.3±0.2(25℃)
Growth conditions	37 ℃; 18-24h; aerobic;
Subculture procedure	① Cultivate the bacteria into a bacterial suspension according to the cultivation conditions first; ② Measure the absorbance of bacterial suspension and calculate the initial concentration of bacterial suspension according to the standard formula; ③ The actual concentration after freeze-drying is obtained by multiplying the initial concentration by the survival rate; ④ Dilute the bacterial suspension according to the actual concentration after freeze-drying to obtain the target concentration, and then divide and freeze dry it;
Storage conditions	-20 ℃
morphology	The colony diameter is 1-2mm, circular, with neat edges, opaque, gray white on the front, raised in the middle, smooth and bright on the surface, moist texture, easy to pick up, G+(blue purple), cocci, purity: pure
Sharing mode	Public welfare sharing