期刊
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
卷 30, 期 -, 页码 127-131出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ifset.2015.05.008
关键词
Juice; Membrane; Pomegranate; Ultrasound
Membrane processing is necessary to clarify turbid pomegranate juice. One of the most important limitations against industrialized use of membrane clarification is the fouling phenomenon. Ultrasound was applied to reduce membrane fouling and the effect of elevated temperatures was removed from the effect of ultrasonic treatment to evaluate the effect of ultrasound waves itself. Results showed that cake formation is a dominant mechanism in both ultrasonic treatment and non-ultrasonic one; however, the intensity of cake formation in the membrane process in the absence of ultrasound waves was much more than its value in the presence of ultrasound. SEM images showed that the cake layer thickness in the membrane process in ultrasonic bath was about 1.5 pm that increased to about 6 pm in the absence of ultrasonic waves. Industrial relevance: Pomegranate juice can be clarified by membrane filtration. Membrane fouling limits its industrial application; therefore, ultrasonic treatment was used to reduce this problem. Results showed that ultrasound waves can reduce cake layer thickness. Hence, it can increase the industrial capability of membrane process to clarify pomegranate juice. (C) 2015 Elsevier Ltd. All rights reserved.
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