食品科学 ›› 2011, Vol. 32 ›› Issue (14): 341-345.doi: 10.7506/spkx1002-6630-201114074

• 技术应用 • 上一篇    下一篇

膜分离技术集成在玫瑰茄色素加工中的应用

郭 宏,彭义交,吕晓莲,贾建会,田 旭   

  1. 北京市食品研究所
  • 出版日期:2011-07-25 发布日期:2011-06-18

Application of Membrane Separation Technology Integration in Separation and Concentration of Hibiscus sabdariffa Pigments

GUO Hong,PENG Yi-jiao,LU Xiao-lian,JIA Jian-hui,TIAN Xu   

  1. (Beijing Food Research Institute, Beijing 100162, China)
  • Online:2011-07-25 Published:2011-06-18

摘要: 通过超滤和反渗透技术集成,在常温条件下实现对玫瑰茄色素的提纯和浓缩,以实现对色素这一热敏性物质起到较好的保护作用,提高色素的品质。采用切割相对分子质量50000的聚砜超滤膜对玫瑰茄浸提液中的果胶进行分离,操作压力0.3MPa、操作温度30℃、料液流速1.375m/s、加料液1/4的水量洗滤后,色素和果胶分离率分别大于96%和90%;采用HR95PP聚酰胺反渗透膜将玫瑰茄超滤透过液浓缩至20°Bx,操作压力4.5MPa、温度30℃。

关键词: 玫瑰茄, 超滤, 反渗透, 膜清洗

Abstract: The integration of ultra-filtration and reverse osmosis membrane technology can provide a protection effect on Hibiscus sabdariffa pigments and improve their quality during purification and condensation process at room temperature. The optimal separation process conditions were ultra-filtration pressure of 0.3 MPa, filtration temperature of 30 ℃, flow rate of 1.375 m/s and material/liquid ratio of 1:4. Under the optimal separation conditions, the separation rates of pectin and pigment were over 96% and 90%, respectively. The permeate was condensed to 20 °Bx by reverse osmosis at 4.5 MPa and 30 ℃. The membrane cleaning method discussed in this paper can provide a promising method for separating and concentrating Hibiscus sabdariffa pigments and other natural pigments.

Key words: Hibiscus sabdariffa L, ultra-filtration, reverse osmosis, membrane cleaning

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