食品科学 ›› 2013, Vol. 34 ›› Issue (4): 51-54.

• 工艺技术 • 上一篇    下一篇

正交试验优化银条多糖超滤浓缩工艺

郎昌野,马丽苹,赵琨,曾晓雄   

  1. 南京农业大学
  • 收稿日期:2012-03-27 修回日期:2013-01-14 出版日期:2013-02-25 发布日期:2013-01-29
  • 通讯作者: 曾晓雄 E-mail:zengxx2002@yahoo.com.cn
  • 基金资助:
    中央高校基本科研业务费专项资金;江苏高校优势学科建设工程资助项目

Study on the ultra-filtration process of polysaccharides from Stachys floridana Schuttl. ex Benth

  • Received:2012-03-27 Revised:2013-01-14 Online:2013-02-25 Published:2013-01-29
  • Contact: Xiaoxiong Zeng E-mail:zengxx2002@yahoo.com.cn

摘要: 以膜通量为指标,首先探讨操作压力、超滤温度和料液pH值3个工艺参数对超滤浓缩银条多糖的影响,在此基础上通过正交实验确定超滤浓缩的最佳工艺参数,最后通过测定清洗前后膜的水通量变化确定最佳的超滤膜清洗方法。结果表明超滤浓缩效果优于常规浓缩的效果,超滤浓缩银条多糖的最佳工艺参数为操作压力0.35 Mp、操作温度30 ℃、料液pH 6.5,最佳膜清洗方法为40 ℃下用pH值为8.5的NaOH溶液清洗0.5 h。

Abstract: Firstly, the effects of operation pressure, temperature and pH value on the ultra-filtration of polysaccharide from Stachys floridana Schuttl. ex Benth (SFPS) were investigated. Then, a multi-factor orthogonal experiment design was conducted to optimize the conditions of ultra-filtration based on the results of the single factor experiment. Finally, the optimal method for cleaning the membrane was determined by evaluating the membrane flux of water before and after the clean of membrane. As results, it was determined that ultra-filtration was better than conventional method for the concentration of SFPS, and the optimal conditions were determined as following: operation pressure 0.35 Mp, temperature 30 ℃, and pH value 6.5. The suitable method for the clean of membrane was washing the membrane with pH 8.5 NaOH solution at 40 ℃ for 0.5 h.

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