不同孔径陶瓷微滤膜对石榴汁除菌效果的影响  

Effect of Different Pore Sizes of Ceramic Microfiltration Membrane on the Removing Rate of Bacteria of Pomegranate Juice

作　　者：艾提亚古丽.买热甫 热合满.艾拉 张敬[1] 

机构地区：[1]新疆农业大学食品科学与药学学院,新疆乌鲁木齐830052

出　　处：《保鲜与加工》2012年第3期24-28,共5页Storage and Process

基　　金：新疆维吾尔自治区科技攻关项目(200731136-3)

摘　　要：以新疆和田酸石榴为原料加工石榴汁,采用不同孔径的陶瓷微滤膜对石榴汁进行除菌过滤,对比不同孔径(0.10、0.22、0.45μm)微滤膜的膜通量、石榴汁除菌率、营养成分含量及色值等指标的变化,确定适于石榴汁过滤除菌的陶瓷微滤膜的孔径与最佳工艺参数。结果表明,用于石榴汁过滤除菌的陶瓷微滤膜的适宜孔径为0.22μm;最佳工艺参数为:过滤压力0.20 MPa,料液温度20℃。在此条件下,陶瓷微滤膜过滤的石榴汁可保持较高的膜通量,有效去除果汁中的悬浮物和有害微生物,较好地保留营养成分,石榴汁在120 d储藏过程中的色泽变化轻微。陶瓷微滤膜过滤除菌可以作为一种除菌工艺代替石榴汁加工中的传统热杀菌工艺。In this experiment,the Xinjiang Hetian acid pomegranate was used as raw materials,pomegranate juice was filtered for bacteria removing by using different pore sizes of ceramic microfiltration membrane,and comparing the changes of membrane flux,bacteria removing rate,nutritional contents and colour value of pomegranate juice with different pore sizes（0.10,0.22,0.45 μm） of ceramic microfiltration membrane,and the suitable pore size of ceramic microfiltration membrane and optimum technological parameter of bacteria removing of pomegranate juice were determined.The results indicated that,the suitable pore size of ceramic microfiltration membrane of bacteria removing of pomegranate juice was 0.22 μm.Optimum technological parameters were as follows： the filtering pressure was 0.20 MPa,the feed temperature was 20 ℃.Under these conditions,the pomegranate juice could keep high membrane flux,and the suspensions and harmful bacteria in juice could be removel effectively,the nutritional contents could be kept better,and the change of pomegranate juice colour during storage time（120 d） was not significant.The removing bacteria technology of ceramic microfiltration membrane filtration could instead of the traditional heat sterilization technology in the process of pomegranate juice.

关 键 词：微滤 陶瓷膜 石榴汁 除菌 

分 类 号：TS275.5[轻工技术与工程—农产品加工及贮藏工程]