HPLC/MS analysis revealed that the main constituents of Brazilian propolis A and B were artepillin C and drupanin, while those of New Zealand propolis C were pinocembrin, galangin and alkylphenol. No flavonoid or phenolic acid was detected in Japanese propolis D. Propolis C showed comparatively
Honey polyphenols have been studied with the objective of relating honeys to their floral sources. Initially synthesized by plant, these polyphenols can be found in the plant's nectar, which are collected by bees, which convert the nectar into honey. Consequently, polyphenols constitute minor
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