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Bromcresol Purple Broth (BAM M26)

[所屬分類:培養基配方] [發布時間:2021-11-9] [發布人:網站管理員2] [閱讀次數:] [返回]

Bromcresol Purple Broth

(BAM M26)

山東拓普生(sheng)物工(gong)程有限(xian)公司培養基配方 //ljxinglong.com

Composition per liter:

Peptone .............................................................10.0g

NaCl....................................................................5.0g

Beef extract.........................................................3.0g

Bromcresol Purple ............................................0.04g

Carbohydrate solution................................... 50.0mL

pH 7.0 ± 0.2 at 25°C

Carbohydrate Solution:

Composition per 50.0mL:

Carbohydrate.....................................................25.0g

Preparation of Carbohydrate Solution: Add

carbohydrate to distilled/deionized water and bring

volume to 50.0mL. Mix thoroughly. Filter sterilize.

Preparation of Medium: Add components, ex

cept carbohydrate solution, to distilled/deionized wa

ter and bring volume to 950.0mL. Mix thoroughly.

Gently heat and bring to boiling. Autoclave for 10

min at 15 psi pressure–121°C. Cool to 25°C. Asepti

cally add 50.0mL of carbohydrate solution. Asepti

cally distribute into tubes or flasks. Alternately

distribute the medium without the carbohydrate solu

tion into test tubes that contain an inverted Durham

tube prior to autoclaving. Then autoclave for 10 min

at 15 psi pressure–121°C, cool to 25°C, and asepti

cally add the carbohydrate solution to each tube to

yield a final carbohydrate concentration of 5%.

Use: For the differentiation of a variety of microor

ganisms based on their fermentation of specific car

bohydrates. Bacteria that ferment the specific

carbohydrate turn the medium yellow. When bacteria

produce gas, the gas is trapped in the Durham tube.

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