Patent ID: 9546951
Date: 2017-01-17
CPC Classifications: G01N

Claim:
1. A method for analyzing reducing power of a sample, comprising: reducing a solution of an iron-cyanide complex over a pH range beginning at 2.4 and lower in the presence of a sample comprising at least one of albumin and methionine, where the pH range is achieved by adding p-toluenesulfonic acid to the solution; optically measuring a peak wavelength in a range of from 360 to 630 nm of the reduced iron-cyanide complex obtained in the reducing step; wherein the iron in the iron-cyanide complex is at least one of iron(III) chloride and iron(III) sulfate, and wherein the cyanide in the iron-cyanide complex is at least one of a ferricyanide and a thiocyanate selected from the group consisting of potassium thiocyanate, sodium thiocyanate and ammonium thiocyanate.