کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
687538 1460122 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction of glycyrrhizic acid from licorice root using ultrasound: Process intensification studies
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Extraction of glycyrrhizic acid from licorice root using ultrasound: Process intensification studies
چکیده انگلیسی

This work deals with the intensification of extraction process of glycyrrhizic acid (GA) from licorice using ultrasound. Various process parameters such as extraction time, solvent to solute ratio, extraction temperature and ultrasound frequency which affect the extraction yield are optimized. The maximum yield of 36.4 mg of GA/g of licorice is obtained at optimized parameters of 10 min time, 30:1 solvent to solute ratio, 40 °C temperature and 25 kHz frequency. The yield obtained with ultrasound assisted extraction (UAE) is compared with that of Soxhlet and batch extraction of GA. It is observed that the ultrasound assisted extraction not only gives higher yield but also reduces the extraction time as compared to conventional method. Temperature has no effect on ultrasound assisted extraction while higher frequency of ultrasound gives slightly better extraction yield. Further the kinetics of this extraction process is also investigated based on the second order rate equation available in the literature. Extraction rate constant, initial extraction rate and equilibrium concentration for different solvent to solute ratio and temperatures are predicted. Model validation is done successfully by plotting experimental and predicted values of concentration of GA in extract.


► Optimization of ultrasound assisted extraction of glycyrrhizic acid from licorice.
► The maximum yield of 36.4 mg/g is obtained at 10 min of extraction time, 30:1 solvent to solute ratio, 40 °C temperature and 25 kHz frequency.
► Ultrasound assisted extraction gives higher yield as compared with that of Soxhlet and batch extraction of GA.
► Extraction rate constant, initial extraction rate and equilibrium concentration are predicted based on model available in literature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering and Processing: Process Intensification - Volume 54, April 2012, Pages 37–41
نویسندگان
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