title: Influence of the extraction method on the yield of flavonoids and phenolics from Sideritis spp. (Pirin Mountain tea).
abstract: The influence of the extraction method on the yield and composition of extracts of Sideritis (Pirin mountain tea) has been studied. Maceration, ultrasound-assisted (USAE) and microwave assisted extraction (MAE) were applied. Total phenolics and total flavonoids were quantified spectrophotometrically, and individual compounds were analyzed by HPLC-DAD-MS(n). This preliminary study reveals that the traditional way of tea preparation from Sideritis is the most appropriate in order to extract the maximum of total flavonoids and total phenolics. In the case of methanol extraction, the optimal method is USAE.
authors.affiliation: Institute of Organic Chemistry with Centre of Phytochemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev str., bl. 9, 1113 Sofia, Bulgaria.
authors.forename: Kalina
authors.initials: K
authors.lastname: Alipieva
authors.forename: Jasmina
authors.initials: J
authors.lastname: Petreska
authors.forename: Angel
authors.initials: A
authors.lastname: Gil-Izquierdo
authors.forename: Marina
authors.initials: M
authors.lastname: Stefova
authors.forename: Ljuba
authors.initials: L
authors.lastname: Evstatieva
authors.forename: Vassya
authors.initials: V
authors.lastname: Bankova
mesh_terms: D005419:Flavonoids / Q000032:analysis*; D010636:Phenols / Q000032:analysis*; D010936:Plant Extracts / Q000737:chemistry; D031365:Sideritis / Q000737:chemistry*
chemical_list: D005419:Flavonoids; D010636:Phenols; D010936:Plant Extracts