Journal
CARBOHYDRATE POLYMERS
Volume 115, Issue -, Pages 732-738Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2014.07.058
Keywords
Sisal waste; Ultrasound assisted extraction; Pectin; Box-Behnken design; Optimization
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In this study, an efficient ultrasound-assisted extraction (UAE) of pectin from sisal waste was investigated and optimized. Response surface methodology (RSM) based on a three-level four-factor Box-Behnken response surface design (BBD) was employed to optimize the extraction conditions (ultrasonic power, extraction temperature, extraction time and solid-liquid ratio). Analysis of variance showed that the contribution of a quadratic model was significant for the pectin extraction yield. The experimental yield (29.32%) was obtained under the optimal condition (ultrasonic power of 61 W, temperature of 50 degrees C, time of 26 min and SL ratio of 1:28 g/ml) was well agreement with predicted values. Therefore, ultrasound-assisted extraction could be used as an alternative method to extract pectin from sisal waste with the advantages of lower extraction temperatures, shorter extraction time and reduced energy consumption. (C) 2014 Elsevier Ltd. All rights reserved.
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