FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (16 ): 142-145.doi: 10.7506/spkx1002-6630-200916027

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Ultrasonic Extraction of Cochineal Dye

LU Yan-min1,2,ZHENG Hua1,ZHANG Hong1,*,ZHOU Mei-cun2,GAN Jin1,MA Li-yi1,ZHANG Zhong-he1   

  1. 1. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224,China;
    2. Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming 650224, China
  • Received:2009-06-14 Online:2009-08-15 Published:2010-12-29
  • Contact: ZHANG Hong E-mail:kmzhhong@163.com

Abstract:

Single-factor and orthogonal array methods were adopted to optimize the ultrasonic extraction of cochineal dye. The optimal conditions for the improved extraction of cochineal dye were determined as follows: ratio of material to solvent 1:6, ultrasonic power 1400 W, ultrasonic treatment time 12 min, pulse on time 10 min, pulse off time 4 min, and extraction number 5. Under these conditions, the yield of cochineal dye was 42.08%.

Key words: cochineal dye, ultrasonic method, extraction

CLC Number: