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  • Title: Phenol addition to the Bradford dye binding assay improves sensitivity and gives a characteristic response with different proteins.
    Author: Marshall T, Williams KM.
    Journal: J Biochem Biophys Methods; 1986 Oct; 13(3):145-50. PubMed ID: 3782718.
    Abstract:
    Phenol has been added to the Coomassie Brilliant Blue G-250 dye reagent used in the standard Bradford protein assay and its effect upon the reagent blank and assay response of fourteen proteins investigated. Phenol can enhance or impair colour yield depending upon its concentration and the amount and type of protein assayed. Four characteristic protein responses to increasing assay concentrations of phenol have been observed. These indicate a complex influence of phenol upon the protein assay. Dye reagent containing 0.5% phenol gave optimal colour yield with most of the proteins investigated and an improved assay response of ovalbumin, ribonuclease, lysozyme, insulin, pepsin and chymotrypsinogen-A relative to bovine albumin.
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