ABSTRACT
Flavonoid components are the largest phenolic groups in nature. Pigments are primarily responsible for the color of rose petals, it is colorless flavonoids aid in the intensification and stabilization of color. The aim of this research was extraction and determination of flavonoid compounds kaempferol and Quercetin in petals of Rosa damascena from central location of Iran and cultivated in Research Institute of Forests and Rangelands. Samples were collected on late April 2006. A 5 g fresh flower petals was blended with 30 ml of 9: 1 methanol - acetic acid, the extract was analyzed by high performance liquid chromatography [HPLC]. Two flavonoids kaempferol and quercetin glycoside compounds were extracted from 15 samples. The highest kaempferol content were obtained from Kamoo 4 [482 ppm], Arak [421 ppm], Ghohrood [420 ppm], Mashhad -e- ardehal 1 [412 ppm], and the lowest from Ghamsar 3 [131 ppm], Kamoo 3 [164 ppm], Kamoo 2 [169 ppm], and Ghamsar 1 [188 ppm]. The highest quercetin glucoside contents were obtained from Kamoo 4 [358 ppm], Ghohrod [337 ppm], Ghamsar 2 [324 ppm], and Arak [318 ppm], and lowest were from Qum [82 ppm], Tehran [91 ppm], Ghamsar 3 [122 ppm] and Kamoo 2 [172 ppm]. According to the results the samples were obtained from Kamoo 4 [482 ppm kaempferol, 358 ppm quercetin], Ghohrod [420 ppm kaempferoi, 337 ppm quercetin] and Mashhad -e -ardehal 1 [412 ppm kaempferol, 300 ppm quercetin]