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A kind of chitosan-xylan Maillard reaction product and its preparation method and application

A technology of Maillard reaction and xylan, which is applied in the fields of application, food science, food preservation, etc., can solve the problems that the reaction is difficult to control, chitosan Maillard reaction is difficult to carry out, etc., and achieve good antioxidant properties and antibacterial properties performance effect

Active Publication Date: 2016-04-13
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most studies are limited to the reactions between proteins and polysaccharides or between aminopolysaccharides and monosaccharides, and there are few Maillard reactions between polysaccharides due to the immiscibility between macromolecules.
In addition, since xylan can only be dissolved in alkaline solution and chitosan can only be dissolved in dilute acid, the reaction between them is difficult to control
Therefore, the Maillard reaction of chitosan is difficult to carry out at present

Method used

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  • A kind of chitosan-xylan Maillard reaction product and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Weigh 50g and 25g of ionic liquid (1-butyl-3-methylimidazole chloride) in two beakers respectively, weigh 0.5g of purified chitosan and 0.5g of xylan and add them to the above-mentioned ionic liquid respectively. Heat while dissolving. After completely dissolving, mix the above two solutions completely, stir evenly, pass N 2 Oxygen in the system was excluded, and samples were taken after the reaction was carried out at 100° C. for 70 minutes under microwave irradiation conditions of 700 W. Immediately after the sample was taken out, it was cooled in an ice bath for 5 minutes, the reaction product was washed with ethanol, and the chitosan-xylan Maillard reaction product was obtained after vacuum drying.

Embodiment 2

[0025] Weigh 50g and 75g of ionic liquid (1-butyl-3-methylimidazole chloride) in two beakers respectively, weigh 0.5g of purified chitosan and 1.5g of xylan and add them to the above-mentioned ionic liquid respectively, while Heat while dissolving. After completely dissolving, mix the above two solutions completely, stir evenly, pass N 2 Oxygen in the system was excluded, and the reaction was carried out under microwave irradiation conditions of 900W and 110°C for 50min. Immediately after the sample was taken out, it was cooled in an ice bath for 7 minutes, the reaction product was washed with ethanol, and the chitosan-xylan Maillard reaction product was obtained after vacuum drying.

Embodiment 3

[0027] Weigh 150g and 25g of ionic liquid (1-butyl-3-methylimidazole chloride) in two beakers respectively, weigh 1.5g of purified chitosan and 0.5g of xylan and add them to the above-mentioned ionic liquid respectively. Heat while dissolving. After completely dissolving, mix the above two solutions completely, stir evenly, pass N 2 Oxygen in the system was excluded, and the reaction was carried out under microwave radiation conditions of 800W and 120°C for 60min. Immediately after the sample was taken out, it was cooled in an ice bath for 12 minutes, the reaction product was washed with ethanol, and the chitosan-xylan Maillard reaction product was obtained after vacuum drying.

[0028] Table 1. The antioxidant capacity of the Maillard reaction product of the embodiment of the present invention 1~3

[0029]

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PUM

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Abstract

The invention discloses a chitosan-xylan maillard reaction product as well as a preparation method and application thereof. The preparation method comprises the following steps of: (1) respectively dissolving chitosan and xylan into the same ion liquid until to be dissolved completely; (2) uniformly mixing the two liquids under a stirring condition, introducing N2, discharging oxygen in a reaction system, and reacting at the temperature of 100-120 DEG C under microwave radiation; and (3) after the reaction is ended, taking out a sample, immediately cooling the sample in an ice bath for 5-15min, washing a reaction product by using ethanol, and carrying out vacuum drying to obtain the chitosan-xylan maillard reaction product. According to the invention, the chitosan and the xylan are dissolved into the same solvent ion liquid, so that the maillard reaction between the chitosan and the xylan can be carried out successfully, and a natural food antiseptic with favorable oxidation resistance and antibacterial performance can be conveniently obtained.

Description

technical field [0001] The invention belongs to the technical field of biomass utilization, and in particular relates to a preparation method of a Maillard reaction product between alkaline polysaccharide chitosan and xylan and the application of the reaction product as a food preservative. Background technique [0002] Hemicellulose has potential commercial value as a renewable natural biopolymer material. Hemicellulose molecules contain a large number of hydroxyl groups, which can be chemically modified in various ways-etherification, esterification, sulfonylation, grafting, etc., so as to improve its properties (such as barrier properties, crystallinity, solubility, etc.) sex, hydrophilicity). In addition to hydroxyl, another functional group with a large content in hemicellulose is carbonyl. Therefore, its application in food packaging materials and coating films has received more and more attention. [0003] Chitosan is the product of deacetylation of chitin. It is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/08A23L3/3562
Inventor 王小英罗玉琼凌云志孙润仓林文胜蔡济海
Owner SOUTH CHINA UNIV OF TECH
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