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Orthogonal Array Design for the Optimization of Ultrasonic-Assisted Extraction of Chili Pigments and Synergistic Effect of Microwave on Ultrasonic-Assisted Extraction

TIAN Yan,LIAO Quan,ZHAO Ling-yan,DENG Fang-ming   

  1. Hunan Provincial Key Laboratory of Food Science and Biotechnology, College of Food Science and Technology,Hunan Agricultural University, Changsha 410128, China
  • Online:2013-08-25 Published:2013-09-03

Abstract:

An orthogonal array design was applied to optimize the ultrasonic-assisted extraction of color pigments from chili
powder. Microwave showed a significant synergistic effect on the ultrasonic-assisted extraction of chili pigments. The optimum
conditions for ultrasonic/microwave-assisted of chili pigments were found to be ethyl acetate as the extraction solvent, 50 ℃,
1:8 (g/mL) of solid-to-solvent ratio, 30 min of ultrasonic treatment with an output power of 190 W followed by 10 min of
microwave treatment with an output power of 500 W. Under the optimized conditions, the yield of chili pigments was 4.78%.

Key words: chilli pigments, ultrasonic, microwave, solvent extraction