The use of nanofiltration (NF) in food processing industries has evolved from a novel approach into a reliable and techno-economically attractive standard unit operation. The lower operating pressures compared to reverse osmosis, and unique selectivity of the membranes render NF as a less energy-intensive and eco-friendly downstream operation. NF finds its applications in concentrating, fractionating and/or purifying various edible products from the dilute streams thereby enhancing process efficiency to a great extent. It can significantly reduce levels of dissolved solids, colors, organics, hardness, turbidity, divalent and multivalent ions and facilitate the required desalting of permeate streams. Food-processing industries dealing with fruit-juice, beverage, dairy, sugar, lactic acid, and vegetable oils successfully employ NF in a myriad of applications. It is also used in wastewater treatment, recovery of value added components and solvents from food waste, deacidification and nutritional enrichments of certain food products. The present paper reviews the recent status of NF technology in food industries along with its trends and future potentials in the production of high quality foodstuff. Effects of important physicochemical parameters on the permeate flux, solute rejection and product quality are briefly assessed and critically compared with pertinent literature. Fouling propensity of membranes and strategies for its mitigation are also highlighted with special reference to food processing industries.

食品加工行业中纳滤（NF）的使用已从一种新颖的方法演变为一种可靠且技术经济上有吸引力的标准单元操作。与反渗透相比，其工作压力更低，并且膜具有独特的选择性，从而使NF成为能耗较低且对环境友好的下游操作。NF在浓缩，分馏和/或纯化稀流中的各种可食用产品方面有其应用，从而在很大程度上提高了工艺效率。它可以显着降低溶解的固体，颜色，有机物，硬度，浊度，二价和多价离子的含量，并有助于对渗透物流进行必要的脱盐处理。食品加工行业涉及果汁，饮料，乳制品，糖，乳酸，和植物油成功地在许多应用中使用了NF。它也用于废水处理，从餐厨垃圾中回收增值成分和溶剂，脱酸和某些食品的营养丰富。本文回顾了NF技术在食品工业中的最新状况，以及其在高品质食品生产中的趋势和未来潜力。简要评估了重要的理化参数对渗透通量，溶质截留率和产品质量的影响，并与相关文献进行了严格的比较。还特别提到了食品加工行业，强调了膜的结垢倾向及其缓解策略。某些食品的脱酸和营养丰富。本文回顾了NF技术在食品工业中的最新状况，以及其在高品质食品生产中的趋势和未来潜力。简要评估了重要的理化参数对渗透通量，溶质截留率和产品质量的影响，并与相关文献进行了严格的比较。还特别提到了食品加工行业，强调了膜的结垢倾向及其缓解策略。某些食品的脱酸和营养丰富。本文概述了NF技术在食品工业中的最新状况，以及其在高品质食品生产中的趋势和未来潜力。简要评估了重要的理化参数对渗透通量，溶质截留率和产品质量的影响，并与相关文献进行了严格的比较。还特别提到了食品加工行业，强调了膜的结垢倾向及其缓解策略。简要评估了溶质截留率和产品质量，并与相关文献进行了严格比较。还特别提到了食品加工行业，强调了膜的结垢倾向及其缓解策略。简要评估了溶质截留率和产品质量，并与相关文献进行了严格比较。还特别提到了食品加工行业，强调了膜的结垢倾向及其缓解策略。