激光对石榴汁膜澄清效率的影响。
The effect of laser on the efficiency of membrane clarification of pomegranate juice.
作者信息
Salehinia Shafieh, Mirsaeedghazi Hossein, Khashehchi Morteza
机构信息
Department of Agrotechnology, Aburaihan Campus, University of Tehran, Tehran, Iran.
Department of Food Technology, Aburaihan Campus, University of Tehran, Tehran, Iran.
出版信息
J Food Sci Technol. 2021 May;58(5):1682-1692. doi: 10.1007/s13197-020-04678-x. Epub 2020 Aug 6.
In this study, a laser node with power 1 W and wavelength 532 nm was used to reduce the membrane fouling and evaluate its effect on the efficiency of membrane clarification of pomegranate juice. The results showed that the permeate flux increased in the presence of the laser due to the decrease in total resistance. Also, application of the laser in the pressurized process of 0.5 bar and the flow rate of 10 mL s had the best performance on the permeate flux. In addition, the laser alignment is an important parameter that gives the most efficiency in case of the vertical angle and the large surface exposure. This was confirmed by images obtained by scanning electron microscope. Evaluation of physicochemical properties of the pomegranate juice showed that they changed after membrane clarification; however, the rate of changes in the most parameters (except pH, total soluble solids content and color parameters) in two processes with and without the laser was same.
在本研究中，使用功率为1W、波长为532nm的激光节点来减少膜污染，并评估其对石榴汁膜澄清效率的影响。结果表明，由于总阻力降低，在激光存在的情况下渗透通量增加。此外，在0.5巴的加压过程和10毫升/秒的流速下应用激光，对渗透通量具有最佳性能。此外，激光对准是一个重要参数，在垂直角度和大表面暴露的情况下效率最高。这通过扫描电子显微镜获得的图像得到了证实。对石榴汁理化性质的评估表明，膜澄清后其性质发生了变化；然而，在有激光和无激光的两个过程中，大多数参数（除pH值、总可溶性固形物含量和颜色参数外）的变化速率是相同的。
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