Chemical composition of the essential oils from leaves of Melissa officinalis extracted by hydrodistillation, steam distillation, organic solvent and microwave hydrodistillation
نویسنده
چکیده
Traditional hydrodistillation (HD), steam distillation extraction (SD), organic solvent extraction (SE), and microwave assisted hydrodistillation (MWHD) techniques were compared and evaluated for their effectiveness in the isolation of essential oil of Melissa officinalis from Algeria. The microwave assisted hydrodistillation technique was optimized in terms of both delivered power and time duration. The oils were analyzed by GC and GC-MS. The four oils contained the same dominant two components neral (24.04%, 24.06%, 38.18% and 18.86%) and geranial (33.79%, 37.91%, 35.57% and 27.79%) respectively in oils obtained by HD, MWHD, SD and SE. Citronellal (15.29%) is present in the oil of HD in comparison with MWHD (1.44%), SD (0.44%) and SE (1.39%).
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