بررسی کیفیت و تجزیه و تحلیل gc/ms اسانس گیاهان هومولوس لوپولوس، ملوا سیلوستریس و آویشن در مخلوطی از حلال‌های اتانول و هگزان

The aim of this study was to investigate the chemical composition of medicinal essential oils of humulus lupulus, malva sylvestris and thymus. after collection, medicinal plants were essential oil extracted by water distillation (clevenger design). essential oil formation compounds were identified using gas chromatography-mass spectrometer (gc / ms). the results showed that each plant extract has different quantity and quality of active ingredients.in humulus lupulus, the maximum percentage efficiency with 31.46% is related to petanoic acid and in malva sylvestris and thymus plants, it is related to 34.47% respectively and 39.25% is related to phenol. therefore, the chemical compounds that had the highest percentage efficiency have many applications in the field of medicine and cosmetics, and those that have the lowest efficiency and are very low have the least use and were reported.