Journal
MOLECULES
Volume 19, Issue 7, Pages 10208-10217Publisher
MDPI
DOI: 10.3390/molecules190710208
Keywords
propolis; poplar extract; catechol; polyphenol oxidase; biosynthesis
Funding
- National Natural Science Foundation of China [31272512]
- earmarked fund for Modern Agro-industry Technology Research System from the Ministry of Agriculture of China [CARS-45]
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Adulteration of propolis with poplar extract is a serious issue in the bee products market. The aim of this study was to identify marker compounds in adulterated propolis, and examine the transformation of chemical components from poplar buds to propolis. The chemical profiles of poplar extracts and propolis were compared, and a new marker compound, catechol, was isolated and identified from the extracts of poplar buds. The polyphenol oxidase, catechol oxidase, responsible for catalyzing oxidation of catechol was detected in poplar buds and propolis. The results indicate catechol can be used as a marker to detect propolis adulterated with poplar extract.
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