Author:
Phan V M,Junyusen T,Liplap P,Junyusen P,Taweechuensakul W
Abstract
Abstract
In this study, neutral oil was recovered from dried rice bran soapstock using ultrasound assisted solvent extraction (UASE). Response surface methodology (RSM) was employed to optimize the UASE parameters to obtain the maximum yield of neutral oil using face centered composite design (FCCD). The parameters included ultrasound power (0.5-4.5W/g), process temperature (35-55°C), and sonication time (4-26 min). The quadratic response models were generated and statistical analysis was performed to validate the models. The results showed that the optimum extraction conditions were ultrasound power of 3.75 W/g, process temperature of 49.71°C, and sonication time of 22.68 min. Ultrasound power and temperature were the most significant parameters for the extraction process. Under the optimal condition, the predicted neutral oil recovery was 98.10%, while corresponding experimental result was 98.21%, suggesting good agreement between the predicted and experimental data and high predictive ability of the models.
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