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Apple pomace selective oxidation cellulose derivative and preparation method thereof

A technology for oxidizing cellulose and apple pomace, which is applied in fiber raw material processing, textiles and papermaking, etc., can solve the problems of intelligent control and reaction efficiency to be improved, and achieve easy control and research, avoid uneven stirring, and clear reaction system Effect

Active Publication Date: 2017-08-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this reaction can only control the oxidation of cellulose at the stage of carboxyl formation, and its intelligent control and reaction efficiency need to be improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for preparing apple pomace selectively oxidized cellulose derivatives, comprising the following steps:

[0033] 1) Weigh a certain mass of apple insoluble dietary fiber residue, add distilled water at a ratio of 1:10 (g / mL) to solid-liquid ratio, and add distilled water at a ratio of 10:1 (g / mL) and 10:2 (g / g) respectively. Add glacial acetic acid and sodium chlorite at the same ratio, and vibrate ultrasonically at a frequency of 28kHZ for 10min at 55°C;

[0034] 2) Add glacial acetic acid and sodium chlorite again to the product obtained in step 1), and treat it with ultrasonic vibration at a frequency of 28kHZ for 10 minutes at 55°C, wash the obtained product several times with distilled water and acetone, and pump Filter, and dry the filter residue at 40°C to constant weight, which is the cellulose compound with lignin removed;

[0035] 3) Weigh an appropriate amount of lignin-removed cellulose compound, add a sodium hydroxide solution with a concentration ...

Embodiment 2

[0042] A method for preparing apple pomace selectively oxidized cellulose derivatives, comprising the following steps:

[0043] 1) Weigh a certain amount of apple insoluble dietary fiber residue, add distilled water at a ratio of 1:12 (g / mL) to solid-liquid ratio, and add distilled water at a ratio of 10:2 (g / mL) and 10:3 (g / g) respectively. Add glacial acetic acid and sodium chlorite at the same ratio, and vibrate ultrasonically at a frequency of 30kHZ for 12min at 60°C;

[0044] 2) Add glacial acetic acid and sodium chlorite again to the product obtained in step 1), and at 60° C., treat with ultrasonic vibration at a frequency of 30kHZ for 12 minutes, wash the obtained product several times with distilled water and acetone, and pump Filter, and dry the filter residue at 45°C to constant weight, which is the cellulose compound with lignin removed;

[0045] 3) Weigh an appropriate amount of lignin-removed cellulose compound, add a sodium hydroxide solution with a concentratio...

Embodiment 3

[0049] A method for preparing apple pomace selectively oxidized cellulose derivatives, comprising the following steps:

[0050] 1) Weigh a certain mass of apple insoluble dietary fiber residue, add distilled water at a ratio of 1:13 (g / mL) to solid-liquid ratio, and add distilled water at a ratio of 10:3 (g / mL) and 10:4 (g / g) respectively. Add glacial acetic acid and sodium chlorite at the same ratio, and vibrate ultrasonically at a frequency of 31kHZ for 14min at 65°C;

[0051] 2) Add glacial acetic acid and sodium chlorite again to the product obtained in step 1), and treat it with ultrasonic vibration at a frequency of 31kHZ for 14min at 65°C, wash the obtained product several times with distilled water and acetone, and pump Filter, and dry the filter residue at 50°C to constant weight, which is the cellulose compound with lignin removed;

[0052] 3) Weigh an appropriate amount of lignin-removed cellulose compound, add a sodium hydroxide solution with a concentration of 14...

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PUM

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Abstract

The invention discloses an apple pomace selective oxidation cellulose derivative and a preparation method thereof. The preparation method comprises the following steps: (1) adding a sodium periodate solution into apple pomace cellulose according to a material-liquid ratio of 1g: (10 to 35)mL, oscillating and reacting for 2 to 10h at a constant temperature at 30 to 50 DEG C, carrying out the suction filtration, and collecting filter residues; and (2) soaking the filter residues in 0.1 to 0.2mol / L of ethylene glycol solution for 0.3 to 1h, repeatedly washing by using water, performing the suction filtration, drying the filter residue until a constant weight is achieved, thus obtaining the apple pomace selective oxidation cellulose derivative. The sodium periodate is selected as an oxidant, the oxidation effect is good, the reaction condition and the reaction degree are easy to control, the product is convenient to detect in real time, the comprehensive utilization range of the apple pomace is enlarged, and the apple pomace selective oxidation cellulose derivative is suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of food processing, and in particular relates to a simple and easy apple pomace selective oxidized cellulose derivative and a preparation method thereof. Background technique [0002] my country is a big apple producing country. According to relevant statistics, the total apple production in 2016 reached 43.8 million tons, especially in the apple production bases represented by Shaanxi Province, which can reach nearly 10 million tons. With the increase of apple production, the apple processing industry is growing day by day, which has made a huge contribution to the economic development of our country to a certain extent. becomes an urgent problem to be solved. [0003] Studies have shown that apple pomace contains many nutrients such as dietary fiber and minerals, and has high utilization value. Among them, dietary fiber is as high as 60-80%, and an important substance in dietary fiber is cellulose, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B15/02D21C5/00
CPCC08B15/02D21C5/00
Inventor 陈雪峰李列琴刘宁房斐
Owner SHAANXI UNIV OF SCI & TECH
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