FOOD SCIENCE ›› 2011, Vol. 32 ›› Issue (10): 70-74.doi: 10.7506/spkx1002-6630-201110016

• Processing Technology • Previous Articles     Next Articles

Process Optimization for Extraction of Water-soluble Polysaccharides from Litchi Flesh

ZHANG Zhong,TANG Xu-ming,ZHANG Ling   

  1. College of Chemistry and Life Science, Guangdong University of Petrochemical Technology, Maoming 525000, China
  • Online:2011-05-25 Published:2011-04-08

Abstract: Objective: To explore the optimal extraction parameters for water-soluble polysaccharides from litchi flesh. Methods: A series of single-factor investigations followed by response surface analysis were carried out to optimize conditions for the extraction of water-soluble polysaccharides from litchi fresh. Sulfuric acid-phenol method was used to quantify polysaccharides. Results: The optimal extraction parameters were litchi flesh-to-water ratio of 1:17 (g/mL), extraction temperature of 90.5 ℃, and extraction time of 4.0 h. Under these conditions, the extraction rate was up to 10.06%, and the crude extract obtained showed an average polysaccharide content of 6.71%. Conclusion: It is feasible to optimize extraction parameters of water-soluble polysaccharides from litchi flesh using response surface methodology.

Key words: litchi flesh, water-soluble polysaccharides, extraction, optimal parameters

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