Bovine Serum Albumin
SIGMA/A9418 - lyophilized powder, BioReagent, suitable for cell culture
Synonym: Albumin bovine serum; BSA; Bovine albumin
CAS Number: 9048-46-8
EC Number: 232-936-2
MDL Number: MFCD00130384
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: A9418-50G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: A9418-100G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: A9418-500G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: A9418-10G
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: A9418-5G
| biological source | bovine |
| form | lyophilized powder |
| loss | ≤5% |
| mol wt | ~66 kDa |
| pH | 5.0-5.6 |
| product line | BioReagent |
| Quality Level | 200  |
| shipped in | ambient |
| solubility | H2O: 40 mg/mL |
| storage temp. | 2-8°C |
| technique(s) | cell culture | mammalian: suitable |
| Application: | Select the right albumin for your application with the Albumin Selection Guide |
| Application: | Bovine Serum Albumin has been used in the washing solution for flow cytometry analysis, tissue digestion solution and blocking solution for ELISA (enzyme-linked immunosorbent assay). It has also been used in the resuspension buffer for flow cytometry. |
| Biochem/physiol Actions: | Bovine serum albumin is broadly used as an additive to cell culture media, especially serum-free media. It provides a range of benefits including protection from oxidative damage and stabilization of other media components such as fatty acids and pyridoxal. |
| Biochem/physiol Actions: | Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies. |
| General description: | Bovine serum albumin is a model protein in various studies and is made up of 583 amino acids. It is a water-soluble protein with a molecular weight of 66.4kDa. Six α-helices form three homologous domains of BSA. Depending on pH, it undergoes reversible conformational isomerization. The native structure of the protein becomes reactive and flexible on heating. |
| Packaging: | 5, 10, 50, 100, 500 g in poly bottle |
| Preparation Note: | Often referred to as Cohn fraction V; this product is prepared by a modified method of the Cohn cold ethanol fractionation method. |
| Preparation Note: | 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. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Storage Temp. | 2-8°C |
| UNSPSC | 12352202 |