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- Nakayama, Motokazu, et al. Show all 5 Authors
- International journal of food science & technology 2010 v.45 no.10 pp. 2071-2079
- absorbance; agitation; beverages; catechin; ceric oxide; cerium; epicatechin; epigallocatechin; green tea; high performance liquid chromatography; hydrogen peroxide; polyphenols; turbidity
- ... We have developed a simple and rapid turbidimetric method to determine catechins based on the fact that many polyphenols produce hydrogen peroxide in an alkaline environment and that hydrogen peroxide oxidises cerium to generate cerium oxide precipitates. Four catechins (epicatechin, epigallocatechin, epicatechin gallate, epigallocatechin gallate) aggregated with these precipitates to form massive ...