Methyl eugenol-rich extracts from dried tuberose flowers (Polianthes tuberosa L.) of Calcutta single variety were obtained using supercritical carbon dioxide (SC-CO2) extraction. The optimized conditions for highest yield of methyl eugenol were 50 ℃, 300 bar, 135 min with 1 L min-1 flow rate of gaseous CO2. Solubilities of methyl eugenol under different SC-CO2 extraction conditions were evaluated by Hildebrand solubility parameter and Chrastil equation. The extraction curve of methyl eugenol followed plug flow model. Steady state extraction occurred up to 100min, followed by unsteady state. Release of methyl eugenol from tuberose flowers followed first-order kinetics (Peppas model) and non-Fickian diffusion. Packed bed characterization was carried out using dimensionless numbers of mass transfer, considering steady and unsteady states of extraction. These findings could be used in the development of the pilot plant and commercial scale extraction of methyl eugenol from floral matrices.
Ghosh PK, Bhattacharjee P, Das S, Int. J. Pharm. Sci. Res., 5, 1279, 2014
Anand AK, Mohan M, Haider SZ, Sharma A, Int. J. Pharm. Sci., 3, 223, 2011
Nabiha B, Abdelfateh E, Faten K, Paul WJ, Michel M, Moncef CM, J. Essent. Oil Bear. Pl., 12, 694, 2009
Joshi RK, Indian J. Pharm. Sci., 75, 457, 2013
Ayci F, Aydinli M, Bozdemir OA, Tutas M, Flavour Frag. J., 20, 481, 2005
N.T. P. Reports on Carcinogens, 11, 153, PMID: 15326674 (2002).
Mukhopadhyay M, Fundamentals of supercritical fluids and phase equilibria, Natural Extracts using Supercritical Carbon dioxide, CRC Press, Florida, USA (2000).
A.O.A.C.: AOAC method 967.19, in: Helrich K, Ed., Official Methods of Analysis of AOAC International, 15th Ed., AOAC International, Arlington, VA, USA (1990).
Montgomery DC, Experiments with a single factor: the analysis of variance, Design and Analysis of Experiments, John Wiley and Sons, New York, USA (2001).
Montgomery DC, Response surface methods and other approaches to process optimization, Design and Analysis of Experiments, John Wiley and Sons New York, USA (2001).
Ge Y, Ni Y, Yan H, Chen Y, Cai T, J. Food Sci., 67, 239, 2002
Cseke LJ, Kaufman PB, How and why these compounds are synthesized by plants, Natural Products from Plants. In: Cseke LJ, Lu CR, Kornfield A, Kaufman PB, Kirakosyan A, Eds., CRC Press, Florida, USA (2006).