Propolis is a multifunctional material collected and used by honey bees in the construction and maintenance of their hives. It has been used in folk medicine for centuries. Propolis (EEPs) samples were obtained from 4 different regions in the United States, namely Northeast (New York and Maine), South (Alabama and Mississippi), Midwest (Michigan and Ohio) and West Coast (California and Washington-Oregon). Overall visual inspection of the absorbance profile showed differences in most samples, even those coming from the same region, with the exception of the samples from California and Ohio that had almost the same absorbance profiles. In addition, derivative spectroscopy and principal component analysis were also performed to further differentiate the propolis samples used. It was also observed that the absorbance profile of all propolis samples changed with aging, with absorbance increasing in samples that were stored for more than a year.

Differentiation of absorbance of bee propolis samples

ACS Spring 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.