Optimization of pressurized hot water extraction of Lavandin essential oils via central composite design
نویسندگان
چکیده
Pressurized hot water extraction (PHWE) and hydrodistillation were compared for the extraction of essential oil from Lavandin. Using GC-FID analysis in conjunction with central composite design, the maximum extraction yield was obtained for temperature of 148 o C, pressure of 33.7 (bar), static time of 10.7 (min), dynamic time of 17.6 (min), and flow rate of 0.69 (mL/min). The PHWE is a practical technique for separation of constituents such as 1,8-Cineole (8.1%), linalool (32.1%), linalyl acetate (32.3%), and camphor (5.2%) from Lavandin to be applied in the food, fragrance, pharmaceutical and natural biocides industries. The PHWE method is quicker (28.3 min versus 3 h) and more extraction yield (5.10 versus 1.52) than hydrodistillation
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