Optimization of Ultrasonic Radiation Assisted Extraction Technique of Pigment from Grain Amaranth Flower Spikes

Abstract

Abstract:

Ultrasonic radiation was used to assist the extraction of red pigment from grain amaranth flower spikes, effect of solvent，material/liquid ratio ，extraction temperature ，ultrasonic intensity，extraction time and extraction degree to the result of pigment extraction was researched based on single factor experiments, BBD combined with response surface methodology(RSM) was employed to find a optimized extract method. Results showed: the optimal parameters was: material/liquid ratio was 1:46.5, extraction temperature and time was 32.8℃ and 67.2 min respectively，ultrasonic intensity was 150w and extraction degree was 2. In optimized conditions, the anticipative maximum extraction ratio was 82.13% and the result of demonstration test was 82.29%.

CLC Number:

TS202.3

FU-rong LIAO. Optimization of Ultrasonic Radiation Assisted Extraction Technique of Pigment from Grain Amaranth Flower Spikes[J]. FOOD SCIENCE, 2013, 34(2): 93-98.

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