Method for drying biological cellulose hydrogel

A technology of biological cellulose and drying method, which is applied in the directions of drying solid materials, drying solid materials without heating, and drying solid materials with a combination of methods, which can solve the collapse of the spatial network structure of biological cellulose, affect mechanical properties, and increase costs and other problems, to achieve excellent mechanical properties, reduce the degree of fragmentation, and reduce the effect of damage

Active Publication Date: 2013-01-16
HAINAN GUANGYU BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, at present, it is difficult to produce biocellulose dry products with a large area. This is because the water in the biocellulose hydrogel has a high surface tension, so it will cause biocellulose space as it is lost during the drying process. The collapse of the network structure greatly affects its mechanical properties and greatly improves the brittleness of the dried biocellulose produ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: Drying of biocellulose hydrogels

[0022] Take 1000g of commercially available biocellulose hydrogel (dynamic fermentation culture, diameter 5cm), first dry it with hot air (50°C) to reduce the weight of biocellulose hydrogel to 700g, and then dry it at a concentration of 0.5wt% Soak in the glycerin fatty acid ester solution for 8 hours, and then dry at 40°C to a constant weight at a low temperature to obtain a dry product of biocellulose.

[0023]

Embodiment 2

[0024] Example 2: Drying of biocellulose hydrogels

[0025] Take 1000g of commercially available biocellulose hydrogel (static fermentation culture, size 20*20cm), first squeeze out the water in the biocellulose hydrogel through mechanical compression (5 kg force compression), and make the biocellulose The weight of the hydrogel was reduced to 680g, and then soaked in a soybean lecithin solution with a concentration of 1wt% for 12 hours, and then vacuum freeze-dried to a constant weight to obtain a dry product of biocellulose.

[0026]

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PUM

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Abstract

The invention relates to a method for drying biological cellulose hydrogel. The method comprises the following steps of: soaking part of dehydrated biological cellulose hydrogel in a surfactant-containing solution, and then drying. The surfactant is one or more of glycerin fatty acid ester, sucrose fatty acid ester, soyabean lecithin, acetin, tartaric acid glyceride, diacetyl tartaric acid glyceride, citrate, polyglycerol fatty acid ester, stearoyl citrate, stearyl tartrate, sodium stearyl lactate, calcium stearyl lactate, sodium stearyl fumarate and sorbitan fatty acid ester. By the method for drying the biological cellulose hydrogel, the damage to the spatial net structure of biological cellulose in the drying process can be reduced, and the cracking in the drying, packaging and conveying processes is reduced, and the thermal insulation property of a biological cellulose dried product can be improved.

Description

technical field [0001] The invention relates to a preparation method of a biological cellulose product, in particular to a drying method of a biological cellulose hydrogel. Background technique [0002] Biocellulose, also known as bacterial cellulose (BC), is a cellulose product made by fermentation of microorganisms of the genus Acetobacter, such as Acetobacter xylinum. At present, waste materials, such as coconut water and pineapple peel juice, are used as raw materials, so the cost is low. The obtained product contains more than 95% water, so it is also called biocellulose hydrogel. At present, domestic bacterial cellulose products are mainly added to food as dietary fiber to provide health care functions to the human body. The preparation method of biocellulose hydrogel is known in the art, as disclosed in CN101671708, CN1840677A, and CN101319242A. In recent years, the research on the new application of biocellulose hydrogel has been in-depth, which often involves the...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08J7/02F26B5/16F26B7/00F26B5/06
Inventor 钟春燕
Owner HAINAN GUANGYU BIOTECH
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