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Calorimetric Determination of Volatile Reducing Substances
Author(s) -
FARBER LIONEL,
LERKE PETER
Publication year - 1967
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1967.tb00847.x
Subject(s) - absorbance , potassium permanganate , chemistry , permanganate , chromatography , inorganic chemistry
SUMMARY— The iodimetric procedure for determining the amount of reduction of an alkaline potassium permanganate solution which is used as a measure of the content of volatile reducing substances (VRS) has been substituted by a colorimetric one. The net absorbance at 610 mp is determined from the difference in absorbance between the unreacted and reacted 0.02N KMnO 4 in N NaOH solution. The microequivalents of reduction corresponding to the net absorbance value is read off a graph showing the linear relationship between the net absorbance and the amount of VRS.