Title:
DEXTRIN FRACTIONATION METHOD
Document Type and Number:
WIPO Patent Application WO/2016/041219
Kind Code:
A1
Abstract:
The present invention relates to the technical field of food processing. Disclosed is a dextrin fractionation method. The principle of the present invention is based on an incompatibility between a starch degradation product (dextrin) and polyethylene glycol in an aqueous solution, and the incompatibility between the dextrin and the polyethylene glycol is more remarkable when the molecular weight of the dextrin is greater, such that the concentration of the polyethylene glycol is gradually increased when the polyethylene glycol is gradually added in a dextrin aqueous solution, thereby stepwise precipitating dextrin components having molecular weights from large to small. The dextrin fractionation method comprises the steps of dextrin solution preparation and dextrin fractionation, and comprises: using tapioca starch as a raw material, degrading for 3 days at a temperature of 40°C via n-butyl alcohol and hydrochloric acid to obtain dextrin, dissolving the dextrin in distilled water to prepare 100 mL of a dextrin solution having a mass concentration of from 0.9% to 3.6%, adding 5 g of polyethylene glycol, heating and stirring until the solution is clear and cooling in air to a temperature of 25°C, storing for 24 hours at a temperature of 25°C, centrifuging, drying in an oven and grinding to obtain a fractional component 1; continuously adding 5 g of the polyethylene glycol to a supernatant and repeating the above process to obtain a fractional component 2; and repeating the above process until the added amount of the polyethylene glycol is 60 g to obtain 9-11 dextrin components.
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Inventors:
JIN ZHENGYU (CN)
TIAN YAOQI (CN)
HU XIUTING (CN)
SUN BINGHUA (CN)
ZHANG BAO (CN)
WEI BENXI (CN)
WU CHUNSEN (CN)
YANG NA (CN)
XU XUEMING (CN)
TIAN YAOQI (CN)
HU XIUTING (CN)
SUN BINGHUA (CN)
ZHANG BAO (CN)
WEI BENXI (CN)
WU CHUNSEN (CN)
YANG NA (CN)
XU XUEMING (CN)
Application Number:
PCT/CN2014/087501
Publication Date:
March 24, 2016
Filing Date:
September 26, 2014
Export Citation:
Assignee:
UNIV JIANGNAN (CN)
International Classes:
G01N33/10
Foreign References:
| US5225219A | 1993-07-06 | |||
| CN102718891A | 2012-10-10 |
Other References:
BASEDOW, A. M. ET AL.: "Production, Characterization, and Solution Properties of Dextran Fractions of Narrow Molecular Weight Distributions", JOURNAL OF POLYMER SCIENCE : POLYMER SYMPOSIUM, vol. 66, 31 December 1979 (1979-12-31), pages 101 - 115
DEFLOOR I. ET AL.: "fractionation of maltodextrins by ethanol", JOURNAL OF CHROMATOGRAPHYA, vol. 803, 31 December 1998 (1998-12-31), pages 103 - 109, XP004117823, DOI: doi:10.1016/S0021-9673(97)01268-5
DEFLOOR I. ET AL.: "fractionation of maltodextrins by ethanol", JOURNAL OF CHROMATOGRAPHYA, vol. 803, 31 December 1998 (1998-12-31), pages 103 - 109, XP004117823, DOI: doi:10.1016/S0021-9673(97)01268-5
Attorney, Agent or Firm:
WUXI DAWEI PATENT TRADE MARK AGENCY(GENERAL PARTNERSHIP) (CN)
无锡市大为专利商标事务所(普通合伙) (CN)
无锡市大为专利商标事务所(普通合伙) (CN)
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