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Merck
CN

70166

Skim Milk Powder for Biotechnology and Microbiology

for Biotechnology and Microbiology

Synonym(s):

Milk powder fat-free

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About This Item

UNSPSC Code:
41106212
NACRES:
NA.74

Key Documents

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Product Name

Skim Milk Powder, suitable for microbiology

biological source

bovine milk

sterility

non-sterile

form

powder

composition

total nitrogen (N), 4.7-6.0%

availability

not available in USA and Canada

impurities

≤1.5% lipid
≥50.0% reducing sugars (as lactose monohydrate)

ign. residue

≤10%

loss

≤5% loss on drying

application(s)

food and beverages
pathogen testing
microbiology

Quality Level

200

Application

Skim Milk Powder is recommended for cultivation and enumeration of microorganisms encountered in dairy industry

General description

Skim Milk powder is used for the demonstration of coagulation and proteolysis of casein. Skim Milk is sometimes used as a complete medium or as an ingredient in other media used for the propagation of organisms occurring in milk products. The addition of skim milk to any nutrient-rich medium creates favorable conditions for the growth of organisms, which are encountered in milk. The number of bacteria isolated thus is more than the number of organisms isolated on a regular medium. Proteolytic bacteria hydrolyze casein to form soluble nitrogenous compounds indicated as a clear zone surrounding the colonies on the agar medium. Skim milk serves as a good source of casein

Other Notes

Sales restrictions may apply

Preparation Note

Mix the powder to a smooth paste with a small quantity of distilled water, then gradually add more distilled water until a 10% w/v mixture is obtained. This is equivalent to fresh milk, and may be sterilized by autoclaving for 5 minutes at 121 °C. Care should be taken not to overheat during sterilization, otherwise caramelization will occur.

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

监管及禁止进口产品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCN8304
BCCM2027
BCCK5815
BCCH4990
BCCH4991

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Sevil Arabaci Tamer et al.
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Genes and immunity, 20(3), 214-223 (2018-05-08)
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Immunology and cell biology, 95(2), 207-214 (2016-09-13)
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International journal of oncology, 50(2), 356-364 (2016-12-22)
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Articles

Base Ingredients of Microbiology Media

Culture media provides a habitat with suitable nutrients, energy sources, and certain environmental conditions for the growth of microorganisms. The components of the culture media range from simple sugars to peptones, salts, antibiotics, and complex indicators.

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