ABSTRACT
Rosa damascene Mill. is one of the most important medicinal and aromatic plants mountainous areas Kashan. This plant have different genotypes that they are very various in size and colour of flowers, number of petals, amount of essential oil and components. Extraction and determine of essential oil combination of three genotypes from Rose of Kashan area. The flowers of these three genophytes fully double link, white and yellow was collected from mountainous areas Kashan. The essential oil, by hydrodistillation using an all-glass Clevenger-type apparatus. The analysis of the oils were performed by using GC and GC-MS methods. Yields of essential oil of fully double link genotype was 0.025% [v/w] and 39 components was identification. The major components of this genotype were citronelool[%34.7], nonadecane[%14.5] and heneicosane [%10.3]. Yields of the essential oil of white genotype was 0.035% [v/w] and 21 components was identification, that major components were found as citronellol [%53.61], nonadecane [%17.75] and geraniol [%12.59]. Yields of the essential oil of yellow genotype was 0.7% [v/w] and 29 components was identification, that major components were found a s heneicosane [%32], nonadecane [%30] and 9 -nonadecene [%10.5]. Monoterpene citronelool was more than 30-50% from essential oil of genotypes fully double link and white, but this component wasn't in yellow genotype. On the other hand, heavy hydrocarbon component was more than 50% of essential oils component of yellow genotype, but amount of this component was 17% in fully double link and white genotypes
ABSTRACT
The genus Psammogeton Edyew. which belong to the umbelliferae family, is found in central areas of Asia. This genus consists of six species widespread in the sandy dunes of deserts. Among the four species present in Iran, Pssamogeton canescens [DC.] vatke is distributed in regions of Iran central. The aim of this study is to determine the chemical composition of essential oil of Psammogeton canescens. The essential oil was extracted by hydrodistillation of dried aerial part of plant and analysed by GC and GC/MS. Thirty constituents representing 99.7% of total oil have been identified. The main constituents of the oil were found to beta-bisabolene [33.35%], Apiole [28.34%], alpha-Pinene [11.86%] and Dill apiole [8.17%]. Other representative compounds were identified beta-Pinene [2.68%], Myrcene [2.62%] and sylvestrene [2.42%]. Amounting to 99.7% of the total oil, the sesquiterpene hydrocarbons and oxygenated sesquiterpene had the highest contribution [78.16%], these fractions dominated by micro sign bisabolene [33.35%], followed by Apiole [28.34%] and Dill apiole [8.17%]. The diterpene was very poor; it represented [0.49%], it is found to contain only a few percent of cembrene [0.49]