The Bicinchoninic Acid (BCA) assay has become a cornerstone in biochemical laboratories for determining protein concentration. Its widespread adoption is due to its high sensitivity, convenience, and broad compatibility with various substances, making it a preferred method for many researchers. At the heart of this assay lies Bicinchoninic acid disodium salt, a chemical compound with specific properties that enable precise protein measurement.

The BCA assay operates on a two-step colorimetric method. The first step involves the reduction of copper(II) ions to copper(I) ions by reducing agents present in the protein sample (specifically, the peptide bonds and certain amino acid side chains) under alkaline conditions. This reduction step is crucial, as it generates the copper(I) ions that will subsequently react with the Bicinchoninic acid disodium salt. The presence of proteins dictates the amount of copper(II) reduced, thereby correlating protein concentration with copper(I) generation.

The second step is where Bicinchoninic acid disodium salt (CAS 979-88-4) plays its defining role. Two molecules of Bicinchoninic acid disodium salt chelate one molecule of copper(I) ion, forming a highly stable, intensely purple-colored complex. This complex exhibits a strong absorbance maximum at 562 nm, allowing for accurate quantification using a spectrophotometer. The intensity of this purple color is directly proportional to the amount of copper(I) present, and consequently, to the concentration of protein in the original sample.

For laboratories relying on the BCA assay, sourcing high-purity Bicinchoninic acid disodium salt from a reputable manufacturer is imperative. The quality of the reagent directly impacts the assay's sensitivity and accuracy. When you choose to buy from a dedicated supplier, you ensure that your experiments yield reproducible and reliable results. We are committed to providing researchers with top-tier reagents like Bicinchoninic acid disodium salt, backed by comprehensive technical data and competitive pricing.

Understanding the scientific principles behind the reagents you use empowers better experimental design and interpretation. Bicinchoninic acid disodium salt, with its specific chelating properties and contribution to the colorimetric reaction, is central to the success of the BCA assay. For all your protein quantification needs, consider partnering with a trusted manufacturer and supplier to obtain this essential analytical tool.