FOOD SCIENCE ›› 2008, Vol. 29 ›› Issue (12): 342-345.

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Study on Extraction Technology of Chinese Rose Flower Red Pigment

ZHAO  Yong-Guang, CHANG  Li-Xin, LIU  Hong-Mei, LIU  Yu-Qian, XIA  Jun   

  1. 1. Hebei Normal University of Science and Technology,Changli 066600,China;2. Hebei Polytechnic University,Tangshan 063009,China;3.Hebei Normal University,Shijiazhuang 050031,China
  • Online:2008-12-15 Published:2011-12-08

Abstract: The Soxhlet extraction effects of Chinese rose flower red pigment with different solvents were compared. The results showed that 95% ethanol is the optimum solvent. The maximum absorption wavelength of the 95% ethanol solution is 524 nm. The single factor test and orthogonal test results showed that ratio of meterial to solvent and extraction temperature have greater effects on extraction of the pigment,followed by extraction time and particle size of flower powder in turn. The optimal extraction conditions are as follows:Particle size of flower powder 60 mesh,ratio of material to solvent 1:40,extraction temperature 91℃,and extraction time 6 h. Under the optimal extraction conditions,the yield of Chinese rose flower red pigment is 49.02%.

Key words: Chinese rose flower, red pigment, extraction