Abstract Pre-treated sugarcane juice was ultrafiltered using polysulphone based hollow fiber to enhance its shelf life. The membrane of molecular weight cut off 30 kDa was selected based on productivity, quality and microbial safety of the product. Optimum condition was found as 104 kPa transmembrane pressure and 30 l/h cross flow rate (Reynolds number 249) based on flux yield and desirable juice quality. Membranes were characterized in terms of surface morphology and surface chemistry to interpret the nature of deposited layer on the membrane. The flux decline and sucrose concentration in the permeate were simulated using a first principle based transport model. Ultrafiltration yielded a clarified sugarcane juice with 98% recovery of sucrose, 80% recovery of polyphenol, 3 fold reduction in oxidative enzyme and 6 log reduction in bacterial count ensuring extended juice storability. The clarified juice was found to be stable up to 9 weeks at 4 °C.

中文翻译：

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横流中空纤维超滤延长甘蔗汁保质期

摘要 使用聚砜基中空纤维对预处理过的甘蔗汁进行超滤，以延长其保质期。根据产品的生产率、质量和微生物安全性选择截留分子量为 30 kDa 的膜。根据通量产量和理想的果汁质量，发现最佳条件为 104 kPa 跨膜压力和 30 l/h 交叉流速（雷诺数 249）。根据表面形态和表面化学对膜进行表征，以解释膜上沉积层的性质。使用基于第一原理的传输模型模拟渗透液中的通量下降和蔗糖浓度。超滤得到澄清的甘蔗汁，蔗糖回收率为 98%，多酚回收率为 80%，氧化酶减少 3 倍，细菌数量减少 6 log，确保延长果汁的可储存性。发现澄清的果汁在 4°C 下可稳定长达 9 周。