Omani propolis is different form the known propolis types and demonstrates significant chemical diversity. Its most important plant source is the resin of Azadirachta indica, and as a result its typical components are С5-prenyl flavanones. Other plant sources have been identified, too, playing some role in resin collection by bees in Oman: Acacia spp. (most probably A. nilotica) and Mangifera indica. The results demonstrate also the potential of Omani propolis as antimicrobial.
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Popova et al. (2013) studied this question.
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