Composition and antioxidant activity of polysaccharides from jujuba by classical and ultrasound extraction

Int J Biol Macromol. 2014 Feb:63:150-3. doi: 10.1016/j.ijbiomac.2013.10.043. Epub 2013 Nov 5.

Abstract

Crude Zizyphus Jujuba cv. Junzao polysaccharides (CZP) were extracted by hot water and ultrasound-assisted extraction respectively. Using a short application of ultrasound, the yield of polysaccharides increased from 6.23 to 7.95%, which represents an increase of about 27.6%. Both CZPU and CZPH were composed of arabinose, rhamnose, glucose, galactose, and mannose. However, the molar ratio of CZPU was 5.46: 4.96: 5.17: 2.63: 1, while it was 5.46: 4.89: 3.65: 2.54: 1 for CZPH. Furthermore, CZPU had stronger antioxidant activities than CZPH by evaluating in hydroxyl radical and ferric-reducing antioxidant power (FRAP) assay.

Keywords: Extraction; Ultrasound; Zizyphus jujuba cv. Junzao.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antioxidants / chemistry*
  • Arabinose / chemistry
  • Free Radical Scavengers / chemistry
  • Galactose / chemistry
  • Mannose / chemistry
  • Polysaccharides / chemistry*
  • Polysaccharides / isolation & purification
  • Spectroscopy, Fourier Transform Infrared
  • Ziziphus / chemistry*

Substances

  • Antioxidants
  • Free Radical Scavengers
  • Polysaccharides
  • Arabinose
  • Mannose
  • Galactose