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Study on the Best Parameters of Distilling Pectin from Apple Residue

XU Wen-xiu et al(Department of Life Sciences,Yuncheng University,Yuncheng,Shanxi 044000)  
[Objective] The purpose of this research was to study the extraction process of pectin from apple residue.[Method]The pectin was extracted by hot acid solution from apple residue.Solution pH value,extracted time,extracted temperature and the ratio of solution to material were studied to determine effect on extracted rate of pectin.The optional extracted conditions were obtained by the way of orthogonal experiment.[Result] The results indicated that the ratio of solution to material had the greatest influence on extraction.The optimum extracting conditions were as follows: temperature 90 ℃,pH value 2.0 and extracted time 90 min,ratio of solution to material 1∶12.Its obtaining rate could reach 9.25%.[Conclusion] This research will provide the scientific references fot utilizing efficiently apple residue.
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