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1.02244

Sigma-Aldrich

Casein

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About This Item

UNSPSC Code:
12352202
NACRES:
NA.21

form

solid

solubility

20.1 g/L (experimental)

storage temp.

20-25°C

General description

Casein is a calcium phosphate-binding protein that constitutes up to 80% of the total milk proteins. In bovine milk, it exists in four types such as αS1, αS2, β, and κ. Casein can adapt its structure according to the changes in the environment and assemble in colloidal structures to form casein micelles. Casein micelles constitute about 10% of the volume in skim milk.

Analysis Note

Appearance:Almost white, fine or fine granular powder, almost odorless slightly yellowish or grey-yellowish.
N (Nitrogen):14 - 15 %
P (phosphorus):0.7 - 0.8 %
Fats:≤ 0.2 %
Free acid (as lactic acid):≤ 0.1 %
Sulfated ash (800 °C):≤ 1.5 %
Loss on Drying (105°C):≤ 6 %
Suitability as enzyme substrate:conforms internal standard

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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.

JAN Code

1022440000:
1022442500:
1022440100:
1022448889:
1022440100BWT:

Certificates of Analysis (COA)

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Invited review: Understanding the behavior of caseins in milk concentrates
Milena C, et al.
Journal of Dairy Science, 4772-4782 (2019)
Arun Ghosh et al.
Biomacromolecules, 10(7), 1681-1688 (2009-05-14)
The development of advanced materials from biorenewable protein biopolymers requires the generation of more exogenous bonds to maintain the microstructure and durability in the final products. Casein is the main protein of milk, representing about 80% of the total protein.

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