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1.15363

Milk Powder for Biotechnology and Microbiology

for Biotechnology and Microbiology

Synonym(s):

Skim milk powder, Dry skim milk, non-fat milk solids, skimmed milk powder,

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About This Item

CAS Number:
999999-99-4
MDL number:
MFCD00148415
UNSPSC Code:
41106212
NACRES:
NA.74
EC Index Number:
310-127-6
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Product Name

Skim milk powder, suitable for microbiology

biological source

bovine milk

Quality Segment

200

form

solid

shelf life

limited shelf life, expiry date on the label

packaging

pkg of 500 g

pH

6-8 (20 °C, 20 g/L in H2O)

solubility

700 g/L

bulk density

500 kg/m3

application(s)

microbiology, pathogen testing

storage temp.

15-25°C

General description

Skim milk powder is widely used in microbiology as a nutrient source in microbial culture media. It provides a complex mixture of nutrients, including protein, lactose, and minerals, that support the growth of a variety of microorganisms. Skim milk powder is commonly used in media formulations for the cultivation of lactic acid bacteria, including Streptococcus and Lactobacillus species. It can also be used as a supplement in media for the growth of other microbial cells, including fungi, yeasts, and some bacteria that utilize milk proteins as a nutrient source. Additionally, skim milk powder has the advantage of being shelf-stable and easily rehydratable, making it a convenient and cost-effective source of nutrients for microbial cultivation.

Application

Skim milk powder is usually used as an ingredient in many microbial culture media for the growth and identification of bacteria, yeasts, and molds from various pharmaceutical, environmental, food and beverage samples. Furthermore, it is described in the EN ISO 6887-4:2017 to be used as pre-enrichment broth for the detection of Salmonella spp. and STEC when testing cocoa and cocoa containing products (use 100 g/l; sterilize after reconstitution). As an ingredient in culture media Skim milk powder is usually employed in concentrations of 0.1 to 1.0%.

Analysis Note

Assay protein (ex N, calc. on dried substance): ≥ 35 %
Lactose (enzymatically): 40 - 52 %
pH-value (1 %; water): 6 - 7
Fats: ≤ 1.5 %
Free acid (as lactic acid): ≤ 2 %
Ash (800 °C): ≤ 10 %
Water (according to Karl Fischer): ≤ 5.0 %
Suitability for microbiology: passes test
Microbiological test: passes test
Identity (NIR): passes test

Other Notes

Rehydrating the Skim milk powder, or using it for the preparation of culture media, the milk powder should be gently added to water with proper stirring to make sure that no clumps are present in the rehydrated skim milk or the prepared media
Replaces: 1.15363.9017

Storage Class

11 - Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

1153639017: + 1153630500: + 1153630507: + 1153639010:

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Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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