Exotic flora dependence of an unusual Brazilian propolis: The pinocembrin biomarker by capillary techniques

Significant amounts of pinocembrin (>10%), a dihydroxy-flavanone, was found in the composition of an unusual brand of a subtropical Brazilian propolis. Incidentally, this sealing material was obtained from hives surrounding a large forestry site based on a single exotic flora, namely poplar ( Pop...

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Bibliographic Details
Published in:	Journal of pharmaceutical and biomedical analysis Vol. 43; no. 1; pp. 174 - 178
Main Authors:	Adelmann, Juliana, Passos, Mauricio, Breyer, Daniel Henrique, Santos, Maria Helena Rocha dos, Lenz, Cesar, Leite, Natalício Ferreira, Lanças, Fernando Mauro, Fontana, José Domingos
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 04-01-2007 Elsevier Science
Subjects:	Aluminum - chemistry Analysis Analytical, structural and metabolic biochemistry Animals Bees Biological and medical sciences Biomarkers Brazil Chemical Phenomena Chemistry, Physical Chromatography, Thin Layer Chromogeny CZE Densitometry Electrophoresis, Capillary Flavanones - analysis Flavonoids Flavonoids - analysis Fundamental and applied biological sciences. Psychology Gas Chromatography-Mass Spectrometry GC–MS General pharmacology Indicators and Reagents Medical sciences Pharmacology. Drug treatments Pinocembrin Populus - chemistry Propolis Propolis - chemistry Reference Standards Spectrophotometry, Ultraviolet TLC-densitometry South America Brazil America TLC-densitometry Chromogeny Flavonoids GC–MS Pinocembrin Propolis CZE Zone electrophoresis Pharmacognosy Biological marker Animal origin Flavonoid Flavanone derivatives GC-MS Thin layer chromatography Polyphenol Folk medicine Dependence Plant origin Phenols Densitometry
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Summary:	Significant amounts of pinocembrin (>10%), a dihydroxy-flavanone, was found in the composition of an unusual brand of a subtropical Brazilian propolis. Incidentally, this sealing material was obtained from hives surrounding a large forestry site based on a single exotic flora, namely poplar ( Populus sp.). Examination of the different botanical parts of poplar revealed the buds as the main source of the flavanone. Techniques used for the establishment of the chemical correlation between the propolis brand and the poplar buds were TLC/densitometry, capillary GC–MS in the e.i. mode, and CZE with DAD monitoring. Since color enhancement after Al 3+ complexation applies just for more hydroxylated flavonoids, the alternative techniques herein applied were of value for pinocembrin detection and estimation. Analytical data indicated the dominance of the main phenolic pinocembrin biomarker as well as the presence of other related flavonoids in the botanical source and in the propolis derived thereof.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0731-7085 1873-264X
DOI:	10.1016/j.jpba.2006.07.014