FOOD SCIENCE ›› 2006, Vol. 27 ›› Issue (6): 113-117.

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Application of Membrane Filtration Methods for Gardenia Yellow Pigment Processing

 LI  Yuan-Yuan, GAO  Yan-Xiang   

  1. College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China
  • Online:2006-06-15 Published:2011-09-22

Abstract: The extraction of Gardenia (Gardenia jasminoides Ellis) yellow pigment was purified and concentrated by microfiltration and nanofiltration. According to the effects of different membranes and transmembrane pressures on permeate flux and quality, ceramic membrane with pore size 200nm and transmembrane pressure of 0.125MPa was optimal for microfiltration of Gardenia yellow extraction. Then the permeate was three times its original concentration by nanofiltration under transmem- brane pressure of 1.5 MPa.

Key words: Gardenia yellow, pigment, microfiltration, nanofiltration