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Glucomannan hydrogel of konnjaku and preparation method

A glucomannan water and gel technology, applied in the field of konjac glucomannan hydrogel, to achieve the effects of shortening the emergence cycle, mild reaction conditions, and improving moisture retention

Inactive Publication Date: 2005-10-26
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention uses sodium tripolyphosphate and konjac to react under relatively mild alkaline conditions to prepare biodegradable hydrogels, which has not been reported in the literature so far

Method used

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  • Glucomannan hydrogel of konnjaku and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] a. Sodium hydroxide 0.04 parts

[0033] b. Distilled water 100 parts

[0034] c. Sodium tripolyphosphate 1.58 parts

[0035] d. Konjac flour 1.08 parts

[0036] Its preparation steps are as follows:

[0037] A. Dissolve sodium hydroxide in distilled water to make pH = 12; B. Take 100 parts of the step A solution, add sodium tripolyphosphate, and stir evenly; C. Add konjac powder to the step B solution, and stir at the same time to make it Disperse evenly; D, place it at room temperature for 8 hours to ensure that the konjac flour is fully swollen, and control the temperature at 18 or 20 or 22 or 25°C; E, heat up, heat it up to 60°C and keep it for 16 or 20 or 24 hours, and the resulting gel Soak and wash with distilled water 3 or 4 or 5 times to remove residual ions, and then dry in an oven at 45-60°C.

Embodiment 2

[0039] a. Sodium hydroxide 0.04 parts

[0040] b. Distilled water 100 parts

[0041] c. Sodium tripolyphosphate 0.31 parts

[0042] d. Konjac flour 2.16 parts

[0043] The preparation steps are the same as in Example 1.

Embodiment 3

[0045] a. Sodium hydroxide 0.0004 parts

[0046] b. Distilled water 100 parts

[0047] c. Sodium tripolyphosphate 6.31 parts

[0048] d. Konjac flour 2.16 parts

[0049] The preparation steps are the same as in Example 1.

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Abstract

The present invention discloses a konjak glucomannan aqueous gel and its preparation method. It is obtained by using konjak glucomannan aqueous solution and sodium tripolyphosphate and making them be reacted in the presence of sodium hydroxide. Said konjak glucomannan aqueous gel has good biological compatibility and biological degradability, so that it has extensive application range.

Description

technical field [0001] The invention relates to a konjac glucomannan hydrogel, and also relates to a preparation method of the hydrogel, which is widely used in biochemistry, medicine, agriculture and daily chemical industry. Background technique [0002] Polymer hydrogel is a body-shaped network of hydrophilic polymers that can swell in water and retain a large amount of water without dissolving. Hydrogels have many applications in the fields of biochemistry, medicine, agriculture, and daily chemical industry. So far, most hydrogels are non-biodegradable, which limits their applications in medicine and environmental protection. [0003] Konjac belongs to the Araceae plant, and its tubers are rich in reserve polysaccharide konjac glucomannan. Konjac glucomannan is the main component of konjac fine powder, accounting for about 50%-60% of the dry product weight. As a natural polymer polysaccharide, konjac glucomannan has many good properties, su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/075
Inventor 刘芝兰陈立贵刘冰卓仁禧
Owner WUHAN UNIV
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