Optimization of Combined Microwave-Ultrasonic Wave Extraction of Cochineal Dye by Response Surface Methodology

Abstract:

For more efficient and economical extraction of cochineal dye, combined microwave-ultrasonic wave extraction was applied. It was approached 4 factors as microwave power, treated time, materials-to-liquid ratio and ultrasonic wave power. Results showed that the optimal condition individually for cochineal dye extraction was at 400W microwave power, 17min treated time, 1:8 materials-to-liquid ratio and 600W ultrasonic wave power. On the basis of single factor test, RSM optimization of the extraction was achieved at 464W microwave power, 18.48min treated time, 1:8.23 materials-to-liquid ratio and 627W ultrasonic wave power. The verification was very approximate to the predicted value from the modelling regression equation. And the best extraction grade was tesified as 4 times.

• Periodical: Applied Mechanics and Materials (Volume 161)
• Pages: 82-87
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.161.82
• Online since: March 2012
• Authors: Yuan Heng Guo, Hua Zheng, Hong Zhang, Li Yi Ma, Juan Han, Kun Li
• Keywords: Cochineal Dye, Extract, Microwave, Response Surface Methodology (RSM), Ultrasonic Wave (UW)

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