Kalender next 42tg

Keine Termine

Event Kalender

März 2024
Mo Di Mi Do Fr Sa So
26 27 28 29 1 2 3
4 5 6 7 8 9 10
11 12 13 14 15 16 17
18 19 20 21 22 23 24
25 26 27 28 29 30 31

Banners

Comparative Chemistry of Propolis from Eight Brazilian Localities

Propolis is a complex honeybee product with resinous aspect, containing plant exudates and beeswax. Their color, texture, and chemical composition vary, depending on the location of the hives and local flora. The most studied Brazilian propolis is the green (alecrim-do-campo) type, which contains mainly prenylated phenylpropanoids and caffeoylquinic acids. Other types of propolis are produced in Brazil, some with red color, others brown, grey, or black. 

The aim of the present work was to determine the chemical profiles of alcohol and chloroform extracts of eight samples of propolis, corresponding to six Brazilian regions. Methanol and chloroform extracts were obtained and analyzed by HPLC/DAD/ESI/MS and GC/MS. Two chemical profiles were recognized among the samples analyzed: (1) black Brazilian propolis, characterized chiefly by flavanones and glycosyl flavones, stemming from Picos (Piauí state) and Pirenópolis (Goiás state); (2) green Brazilian propolis, characterized by prenylated phenylpropanoids and caffeoylquinic acids, stemming from Cabo Verde (Bahia state), Lavras and Mira Bela (Minas Gerais state), Pariquera-Açu and Bauru (São Paulo state), and Ponta Grossa (Paraná state). 

The present work represents the first report of prenylated flavonoids in Brazilian propolis and schaftoside (apigenin-8-C-glucosyl-6-C-arabinose) in green propolis.

Apitherapy News

Phänologie

Agroscope - Imkerei
Das Zentrum für Bienenforschung ist Bestandteil der Forschungsanstalt  Agroscope Liebefeld-Posieu…
Lifeplus Honey
your trusted source for Bee Products
More Links » JoelLipman.Com

aktualisierte Beiträge

Wetter

who is online

Aktuell sind 549 Gäste, 3 Bots und keine Mitglieder online


3 Bots:
2 x SemrushBot
1 x Googlebot