70166
Skim Milk Powder
suitable for microbiology
Synonyme(s) :
Milk powder fat-free
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About This Item
Code UNSPSC :
41106212
Nomenclature NACRES :
NA.74
Produits recommandés
Source biologique
bovine milk
Niveau de qualité
Stérilité
non-sterile
Forme
powder
Composition
total nitrogen (N), 4.7-6.0%
Disponibilité
not available in USA and Canada
Impuretés
≤1.5% lipid
≥50.0% reducing sugars (as lactose monohydrate)
Résidus de calcination
≤10%
Perte
≤5% loss on drying
Application(s)
food and beverages
pathogen testing
microbiology
Description générale
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.
Autres remarques
Sales restrictions may apply
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 1
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, type N95 (US)
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