Method of measuring diacetyl in processed drinks and foods.

摘要

Diacetyl content in a processed drink or food material is easily and quickly measured by adding a buffer solution to a fixed amount thereof to adjust its pH value, say, to 3-7, subjecting to a deoxygenation process, thereafter adding o-phenylenediamine to cause a reaction, say, at 30-70 DEG C to obtain a reaction liquid and analyzing this reaction liquid by differential pulse voltammetry.