Study on Thermal Decomposition of Polysaccharide Fraction kPs Ⅲa Purified from Leaves of Ilex kudingcha C. J. Tseng

doi:10.7506/spkx1002-6630-200909009

FOOD SCIENCE ›› 2009, Vol. 30 ›› Issue (9): 44-46.doi: 10.7506/spkx1002-6630-200909009

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Study on Thermal Decomposition of Polysaccharide Fraction kPs Ⅲa Purified from Leaves of Ilex kudingcha C. J. Tseng

WANG Xin1 HE Ling-ling2 KONG Yu-mei1 XU Liang1 LIU Bin1,*

1.School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
2.College of Applied Chemistry, Shenyang Institute of Chemical Technology, Shenyang 110142, China

Received:2008-07-17 Revised:2008-12-29 Online:2009-05-01 Published:2010-12-29
Contact: LIU Bin E-mail:liubinzehao@163.com

Abstract

Abstract:

The thermal decomposition of polysaccharide fraction KPS Ⅲa from leaves of Ilex kudingcha C. J. Tseng was studied by using thermogravimetry (TG), thermogravimetry-infrared (TG-IR) and differential scanning calorimetry (DSC) in N2. The results showed that the KPS Ⅲa is stable below 225 ℃ and only release a little of water. KPS Ⅲa is decomposed at 225 to 625℃ and release a great deal of water and carbon dioxide. Compared to galactose and starch, the thermal stability of the sulphated polysaccharide KPS Ⅲa and heparin are lower but the amino polysaccharide, chitin is higher. All these results demonstrated that the KPS Ⅲa is stable below 225 ℃, and different groups have great effects on the thermal stability of the polysaccharide.

Key words: leaves of Ilex kudingcha C. J. Tseng, polysaccharide, TG, TG-IR, DSC

CLC Number:

TS201.2

WANG Xin1 HE Ling-ling2 KONG Yu-mei1 XU Liang1 LIU Bin1,*. Study on Thermal Decomposition of Polysaccharide Fraction kPs Ⅲa Purified from Leaves of Ilex kudingcha C. J. Tseng[J]. FOOD SCIENCE, 2009, 30(9): 44-46.

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Study on Thermal Decomposition of Polysaccharide Fraction kPs Ⅲa Purified from Leaves of Ilex kudingcha C. J. Tseng

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