摘要
采用国际最新产品膜孔径为0.1μm的钛合金膜超滤中试系统对浓缩苹果汁进行超滤与除耐热菌效果研究。结果表明,0.1μm钛合金膜超滤的最佳操作条件为:系统压力为0.8MPa,过滤温度为50℃。以盐酸酸化的300mg/kg浓度的次氯酸钠溶液作为清洗剂,膜通量的恢复率可以达到98%。过滤后耐热菌的去除率达5个对数值以上,果汁的各项质量指标如色值、糖度、浊度等均有较大改善。因此,应用0.1μm的钛合金膜超滤系统过滤浓缩苹果汁具有很好的商业前景。
In this paper, apple juice concentrate was clarified and thermoacidophilic bacteria（TAB） was removed by a pilot-plant-scale ultrafiltration system using TiO2-alloy membranes with a mean pore size of 0.1μm. The experiment showed that the optimum operation conditions were as follow. the system pressure was 0.8MPa, the filtrate temperature was 50℃.The flux recovery rate could be kept at 98% using 300mg/kg HCI acidified hypochlorite sodium as the cleaning agent. After filtration, the rate of TAB elimination was above 5 log, and the color, sugar, turbidity as well as acidity of the juice has improved. Therefore, the ultrafiltration system with the 0.1μm TiO2-alloy membranes had a great potential for commercial application.
出处
《食品工业科技》
CAS
CSCD
北大核心
2006年第6期99-101,104,共4页
Science and Technology of Food Industry
关键词
钛合金膜
浓缩苹果汁
耐热菌
超滤
TiO2-alloy membrane
apple juice concentrate
thermoacidophilic bacteria
ultrafiltration
