FOOD SCIENCE ›› 2010, Vol. 31 ›› Issue (20): 116-120.doi: 10.7506/spkx1002-6630-201020024

• Processing Technology • Previous Articles     Next Articles

Ultrasonic-assisted Extraction of Lac Dye

ZHANG Hong1,2,FANG Gui-gan1,ZHENG Hua2   

  1. 1. Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry, Nanjing 210042, China;
    2. Research Institute of Resources Insects, Chinese Academy of Forestry, Kunming 650224, China
  • Received:2010-06-27 Revised:2010-09-09 Online:2010-10-25 Published:2010-12-29
  • Contact: ZHANG Hong1 E-mail:kmzhhong@163.com

Abstract:

In order to effectively extract lac dye under the assistance of ultrasonic, single factor and orthogonal array design methods were used to optimize process parameters including ultrasonic power, extraction time, pulse time and material/liquid ratio. The optimal extraction conditions were determined as follows: material/liquid ratio, 1:6; ultrasonic power, 1200 W; extraction duration, 18 min; frequency, 20 kHz; pulse-on time, 9 s, pulse-off time, 12 s; and extraction number, 3. The extraction efficiency was up to 85.15% and the yield of lac dye was 0.55% under the optimal extraction conditions.

Key words: lac dye, ultrasonic assistance, extraction

CLC Number: