Orthogonal Array Design for the Optimization of Pectin Extraction from Hawthorn Pulp by Hydrochloric Acid Treatment, Microwave Heating and Salting Out

doi:10.7506/spkx1002-6630-201306024

Abstract

Abstract: Hawthorn pulp was used as the raw material to explore the effects of hydrochloric acid concentration, microwave power, microwave treatment time, saturated aluminum sulfate amount and material/liquid ratio on the extraction efficiency of pectin by one-factor-at-a-time method and orthogonal array design. The results indicated that the effect of microwave power revealed the strongest impact on extraction rate of pectin followed by material/liquid ratio, saturated aluminum sulfate amount, hydrochloric acid concentration and microwave treatment time. The optimal parameters for pectin extraction from hawthorn pulp were hydrochloric acid concentration of 0.05 mol/L, microwave power of 800 W, microwave treatment time of 50 s, material/liquid ratio of 1:15 and 7 mL of saturated aluminum sulfate. Under the optimal extraction conditions, the yield of pectin was 5.87%.

Key words: hawthorn pulp, pectin, microwave, hydrochloric acid, salting out, extraction

CLC Number:

TS213.2

TANG Xia1，LIU Yue-ying2，ZHANG Zi-de1. Orthogonal Array Design for the Optimization of Pectin Extraction from Hawthorn Pulp by Hydrochloric Acid Treatment, Microwave Heating and Salting Out[J]. FOOD SCIENCE, 2013, 34(6): 112-115.

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