Estimation of total flavonoid content in propolis by two complementary colometric methods

@article{Chang2020EstimationOT,
  title={Estimation of total flavonoid content in propolis by two complementary colometric methods},
  author={ChiaFu Chang and Minghua Yang and H.-M. Wen and J. C. Chern},
  journal={Journal of Food and Drug Analysis},
  year={2020},
  volume={10},
  pages={178-182}
}
Flavonoids, with various biological activities, are considered as key compounds in propolis. In this study, quantitative deter minations of flavonoids in propolis were conducted by two complementary colorimetric methods, aluminum chloride method and 2,4-dini trophenylhydrazine method. Results suggested that the sum of flavonoid contents determined by the above two individual methods ma y represent the real content of total flavonoids. In this work, six raw propolis samples were investigated and… Expand
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TLDR
Estimation of the content of total phenolic substances, flavonoids, waxes, ash, volatile substances and dry residue be used as parameters to characterize samples of crude propolis and tinctures. Expand
Flavonoid composition of Tunisian honeys and propolis
Flavonoids and other phenolics of Tunisian honey samples and propolis were analyzed to find correlations between botanical and geographical origin and chemical composition. Flavonoid content of honeyExpand
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The composition and bacteriostatic activities of fifteen propolis samples from various botanic and geographic origins were determined. Twenty-six phenolic components were identified byExpand
HPLC and GC-MS identification of the major organic constituents in New Zealand propolis
Abstract The major organic constituents of New Zealand sourced propolis have been identified and quantified in tincture solutions by a combination of HPLC and GC-mass spectrometry (MS). HPLC was theExpand
Qualitative and quantitative analysis of flavonoids and identification of phenolic acids from a propolis extract
Une methode d'analyse CLHP est mise au point pour l'identification rapide de six acides phenols et huit flavonoides d'un extrait standardise de propolis. La galangine dosee en utilisant un etalonExpand
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TLDR
With a simple microbiological assay technique, in particular the agar dilution method, it was possible to standardize the analysis of propolis samples to identify the quality parameters of this natural product before use for medical treatment. Expand
A GC/MS Study of the Propolis Phenolic Constituents
Abstract Silylated phenolic fraction from two propolis samples was investigated by capillary GC/MS. Fifteen phenolic acids (seven of them new for propolis), two ketones, new for propolis, eightExpand
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TLDR
The therapeutic efficacy of propolis in treating diseases caused by microorganisms is described and some recent concepts about propolis and its use in medicine are presented. Expand
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TLDR
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