[目的] 聚焦反渗透（RO）膜技术在牛乳中的应用,系统考察RO膜技术对牛乳品质的影响。[方法] 通过对比透过RO膜前后的荷斯坦和娟姗两种乳源生牛乳的理化指标及微生物指标的变化,探究RO膜技术对生牛乳理化指标和微生物指标的影响。[结果] 经过RO膜处理后,两种生牛乳的理化指标均显著提升,同时其微生物单位含量亦显著增加。[结论] RO膜可有效浓缩生牛乳中的主要营养成分,可满足高蛋白乳制品的开发需求。为RO膜技术在牛乳中的应用提供了理论依据。
[Objective] This study focused on the application of reverse osmosis（RO）membrane technology in milk,and systematically investigated its effects on milk quality. [Method] The changes in physicochemical and microbiological indicators of raw milk from Holstein and Jersey cows before and after RO membrane treatment were compared to explore the impacts of RO membrane technology on the above indicators of raw milk. [Result] After RO membrane treatment,the physicochemical indicators of both types of raw milk were significantly improved,while the microbial count per unit volume increased remarkably. [Conclusion] RO membrane could effectively concentrate the main nutritional components in raw milk,which can meet the development requirements of high-protein dairy products. This research provided a theoretical basis for the application of RO membrane technology in milk processing.
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