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70166

Millipore

Skim Milk Powder

suitable for microbiology

Synonym(s):

Milk powder fat-free

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About This Item

UNSPSC Code:
41106212
NACRES:
NA.74

biological source

bovine milk

Quality Level

200

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

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

Application

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

Reconstitution

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.

Other Notes

Sales restrictions may apply

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
BCCM2027
BCCK5815
BCCH4991
BCCH4990
BCCF7872

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Sevil Arabaci Tamer et al.
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Scientific reports, 7, 46301-46301 (2017-04-08)
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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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