Journal
ULTRASONICS SONOCHEMISTRY
Volume 21, Issue 2, Pages 860-865Publisher
ELSEVIER
DOI: 10.1016/j.ultsonch.2013.09.008
Keywords
Ultrasound; D-Pinitol; Extraction; Efficiency
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Funding
- Akdeniz University Research Fund [2012.01.0102.014]
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This study reports on the optimization of the conditions of extraction of D-pinitol compound from carob pods by using ultrasonication. For this purpose, the Box-Behnken design, which is a widely used form of Response Surface Methodology, was used to investigate the effects of parameters on the ultrasound-assisted extraction. Four independent variables, temperature (degrees C), ultrasonic power (W), dilution rate (material:water ratio) and time (min), were studied. The results showed that the highest D-pinitol concentration of 11.98 g/L was obtained with an extraction temperature of 50 degrees C, ultrasonic power of 207W, a dilution rate of 1:4 and an extraction time of 120 min. It was found that the D-pinitol concentration of carob extract increased with the effect of ultrasonication during the extraction process. Therefore, ultrasound-assisted extraction could be used as an alternative to conventional hot water extraction with respect to the recovery of D-pinitol from carob pods with the advantages of lower extraction temperatures, shorter extraction time and reduced energy consumption. (C) 2013 Elsevier B.V. All rights reserved.
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