FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (4): 131-135.doi: 10.7506/spkx1002-6630-200904025

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Study on Acid Extration Technology of Pectin from Sweetpotato Pomace

WEI Hai-xiang,LIANG Bao-dong   

  1. (Department of Life Sciences and Engineering, Jining University, Qufu 273155, China)
  • Received:2008-03-27 Revised:2008-11-28 Online:2009-02-15 Published:2010-12-29
  • Contact: WEI Hai-xiang, E-mail:weihaixiang03@163.com

Abstract:

On the basis of single-factor test, quadratic orthogonal rotation combination test and response surface analysis were conducted to investigate effects of pH value, heating temperature and heating time on extraction ratio of pectin from sweetpotato pomace with acid. The results showed that the optimal extraction conditions are as follows: heating temperature 88 ℃, pH 1.8 and heating time 130 min, and the extraction ratio of pomace pectin reaches 65.86%.

Key words: sweet potato pomace, pectin, galacturonic acid, extraction

CLC Number: