56156
M-17 肉汤
NutriSelect® Basic, powder, for Streptococcus thermophilus, pack of 500 g
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NACRES:
NA.85
UNSPSC Code:
41171607
Manufacturer/tradename:
NutriSelect® Basic
Ph:
7.0±0.2 (25 °C)
Form:
powder
Suitability:
Streptococcus thermophilus, nonselective for Enterococcus spp., nonselective for Staphylococcus spp.
Application(s):
food and beverages
microbiology
microbiology
sterility
non-sterile
form
powder
shelf life
limited shelf life, expiry date on the label
composition
ascorbic acid, 0.5 g/L , lactose, 5 g/L , magnesium sulfate, 0.25 g/L , meat extract, 5 g/L , meat peptone (peptic), 2.5 g/L , sodium glycerophosphate, 19 g/L , soya peptone (papainic), 5 g/L , tryptone, 2.5 g/L , yeast extract, 2.5 g/L
packaging
pack of 500 g
manufacturer/tradename
NutriSelect® Basic
technique(s)
microbiological culture: suitable
pH
7.0±0.2 (25 °C)
application(s)
food and beverages
microbiology
storage temp.
2-25°C
suitability
Streptococcus thermophilus, nonselective for Enterococcus spp., nonselective for Staphylococcus spp.
Quality Level
General description
M-17 Broth is a selective medium for Streptococcus thermophilus in the common examination of yoghurt. It is superior to other comparable culture media for the cultivation of the fastidious species such as S. cremoris, S. diacetilactis and S. lactis. Mutants which are incapable of metabolizing lactose can also be isolated on these media. Tryptone, meat peptone, soya peptone, yeast extract and meat extract provide carbonaceous, nitrogenous compounds, vitamin B complex and other essential growth factors. Lactose is the fermentable carbohydrate and ascorbic acid is stimulatory for the growth of lactic Streptococci. Magnesium sulphate provides essential ions to the organisms. Sodium glycerophosphate increases the buffering capacity of the medium, this promotes the growth of lactic streptococci and inhibits lactobacilli growth.
Application
M-17 Broth is a selective medium for Streptococcus thermophilus for examination of yogurt and for the enrichment Streptococcus thermophilus in the dairy industry.
Preparation Note
Suspend 42 g of powder in 1 litre of distilled water and let it soak. Heat to boiling and dispense into suitable containers. Sterilize by autoclaving at 121°C for 15 minutes.
Other Notes
We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
Legal Information
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
存储类别
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
法规信息
动植物来源培养基
此项目有
Simple and rapid method for isolating large plasmid DNA from lactic streptococci.Simple and rapid method for isolating large plasmid DNA from lactic streptococci.
Anderson, Douglas G., and Larry L. Mckay.
Applied and Environmental Microbiology, 46 (3), 549-552 (1983)
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