Description

α-Casein (90-96) CAS NO 83471-49-2 is a high-purity, principal protein fraction derived from milk casein. This product is essential for research and industrial applications requiring a consistent and well-characterized protein source with defined functional properties. It is particularly valuable for manufacturers and researchers in the food science, biotechnology, and pharmaceutical sectors who need a reliable substrate for nutritional studies, emulsion stabilization, or as a standard in analytical methods.

Application

• Food Science & Nutritional Research: Used as a standard protein for studying digestion, bioavailability, and amino acid composition.
• Biotechnology & Biochemistry: Serves as a substrate for enzymatic studies, protein interaction assays, and in the development of diagnostic reagents.
• Pharmaceutical Excipient Development: Investigated for use in controlled-release drug delivery systems and as a biocompatible matrix material.
• Reference Standard: Employed as a high-purity calibrant in analytical techniques like HPLC, electrophoresis, and mass spectrometry for protein quantification and identification.
• Functional Ingredient Research: Studied for its emulsifying, foaming, and gelation properties in model food systems.
• Cell Culture & Microbiology: Utilized as a nutrient component in specialized microbial or cell culture media formulations.

Basic Information

Product Name	α-Casein (90-96)
CAS No.	83471-49-2
Molecular Formula	Contact for details
Molecular Weight	~23-25 kDa (Average)
Synonyms	α-Casein; α-S1-Casein; CAS1S1_BOVIN; Casein Alpha S1; Bovine α-Casein; αs1-Casein; Casein, α-1; Milk Protein α-Casein
EINECS	Contact for details

Quality Control

Our α-Casein (90-96) is produced and handled under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. A detailed Certificate of Analysis (COA) is provided, typically including data from electrophoresis (SDS-PAGE), HPLC for purity assessment, and moisture content. We ensure compliance with relevant standards for research and analytical use.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the label or COA. This product is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to minimize exposure to atmospheric humidity. For long-term storage, consider desiccated conditions at -20°C.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms
Purity (SDS-PAGE)	≥ 90% (α-Casein)
Protein Content (Dry Basis)	≥ 95%
Moisture (Loss on Drying)	≤ 5.0 %
Ash Content	≤ 2.0 %
Solubility	Soluble in alkaline buffers, partially soluble in water

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.