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A9056 Sigma-Aldrich

Bovine Serum Albumin

heat shock fraction, microbiologically tested, ≥96% (agarose gel electrophoresis)

Synonym: Albumin bovine serum, BSA, Bovine albumin

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Properties

Related Categories Albumin, Biochemicals and Reagents, Bovine Serum Albumins, Heat Shock Fractionated, Proteins and Derivatives More...
Quality Level   200
biological source   bovine
assay   ≥96% (agarose gel electrophoresis)
form   lyophilized powder
mol wt   ~66 kDa
purified by   heat shock fractionation
packaging   poly bottle of
origin   USA origin
loss   ≤5%
pH   7
solubility   water: soluble (40 mg/ml)
storage temp.   2-8°C

Description

General description

Albumin is the most abundant plasma protein in humans. High levels of albumin are associated with dehydration. Albumin turnover is seen in infants with iron deficiency anemia. Serum albumin is a reliable prognostic indicator for liver disease. Oxidative damage of albumin is associated with advanced liver disease.

Application

Bovine Serum Albumin has been used as a supplement in Dulbecco′s modified eagle medium (DMEM). It has also been used in immunostaining of cell arrays.

Packaging

10, 50, 100, 500 g in poly bottle

Biochem/physiol Actions

Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.

Suitability

Suitable for growth of Borrelia burgdorferi in BSK II medium

Preparation Note

Prepared using heat shock fractionation

Serum albumin may be referred to as Fraction V. This naming convention is taken from the original Cohn method of fractionating serum proteins using cold ethanol precipitation. Serum albumin was found in the fifth ethanol fraction using Cohn′s method. Since then, the term "Fraction V" has been used by some to describe serum albumin regardless of the method of preparation. Others have used this term to describe serum albumin purified by ethanol fractionation methods that have been highly modified since the original Cohn method was described. Sigma-Aldrich manufactures and distributes serum albumins purified from a variety of primary methods including the true Cohn fractionation method, modified ethanol fractionation methods, heat shock and chromatography. Additional purification steps may include crystallization or charcoal filtration.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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