International Scientific Journal


In this paper, Taguchi method is applied to optimize ultrasound thermal process for extracting caffeine and flavor from coffee. The use of ultrasound can abridge experiments in cost, energy loss and time; the different operating conditions for extraction experiments are executed and the results are also compared. The results show that the best design factors for caffeine are 95℃ of extraction temperature, 28 kHz of operating frequency and 30 s of extraction time. The proposed optimized extraction method is efficient and energy-saving compared with the general process for making coffee
PAPER REVISED: 2010-09-30
PAPER ACCEPTED: 2010-11-11
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2011, VOLUME 15, ISSUE Supplement 1, PAGES [S53 - S59]
  1. Mandal, V., Mohan, Y., Hemalatha, S., Microwave Assisted Extraction of Curcumin by Sample -Solvent Dual Heating Mechanism Using Taguchi L9 Orthogonal Design, Journal of Pharmaceutical and Biomedical Analysis, 46 (2008), 2, pp. 322-327
  2. Grunau, D., Chen, S., Eggert, K., A Lattice Boltzmann Model for Multiphase Fluid Flows, Phys. Fluids A, 5 (1993), 10, pp. 2557-2562
  3. Yin, Y., Yu, H., Zhang, H., A Feature Extraction Method Based on Wavelet Packet Analysis for Discrimination of Chinese Vinegars Using a Gas Sensors Array, Sensors and Actuators B: Chemical, 134 (2008), 2, pp. 1005-1009
  4. Mäntysalo, M., Mäntysalo, E., Extraction and Filtering in Ultrasonic Field: Finite Element Modelling and Simulation of the Processes, Ultrasonics, 38 (2000), 6, pp. 723-726
  5. Babaei, R., Jabbari, A., Yamini,Y., Solid-Liquid Extraction of Fatty Acids of Some Variety of Iranian Rice in Closed Vessel in the Absence and Presence of Ultrasonic Waves Asian, Journal of Chemistry, 18 (2006), 1, pp. 57-64
  6. Singh, D. K., Sahu, A., Spectrophotometric Determination of Caffeine and Theophylline in Pure Alkaloids and its Application in Pharmaceutical Formulations, Journal of Analytical Biochemistry, 349 (2006), 2, pp. 176-180
  7. Zhang, Q. L., et al., Separation of Caffeine and Theophylline in Poly(dimethylsiloxane) Microchannel Electrophoresis with Electrochemical Detection, Journal of Chromatography A, 1098 (2005), 2, pp. 172-176

© 2023 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence