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Gellan gum without organic solvent and production technique thereof

A technology of gellan gum and boiling gum, which is used in the formulation of perfume preparations, medical preparations with non-active ingredients, and pharmaceutical sciences.

Inactive Publication Date: 2007-10-31
上海慧源植物胶囊股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, many applications require gellan gum to have high gel strength, while the gel strength of currently existing gellan gum is usually only 600-800g / cm 2

Method used

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  • Gellan gum without organic solvent and production technique thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Organic solvent-free gellan gum preparation process No.1

[0118] Obtain gellan gum-containing fermentation stock solution by conventional methods (such as the method described in Example 1 in Chinese patent application 00125858.3). Prepare gellan gum according to the following process:

[0119] 1) Flocculation: Add 0.5%, 1%, or 3% hydrochloric acid to the fermentation stock solution during stirring, so that the pH is 2.5.

[0120] 2) Dehydration: Pump the flocculated feed liquid into a continuous dehydration press to obtain a filter cake with a water content of about 15-30%.

[0121] 3) Pulping: the filter cake and water are sent to the beater at a ratio of 1:15, and the pasty material liquid is sent to the glue boiling tank;

[0122] 4) Glue cooking: Add 2%, 5% or 9% sodium hydroxide solution under stirring until the pH value of the feed solution reaches 6-8. The feed liquid is heated to 70-85°C, and the pH value is adjusted to 8-10. Keep warm for 5-15 minutes, th...

Embodiment 2

[0130] Performance Testing

[0131] For gellan gum No.1 prepared in Example 1, its properties were measured by conventional methods.

[0132] The results are shown in Table 1 below;

[0133] Exterior

[0134] *: Indicates that Escherichia coli was not detected in 100 g of gellan gum.

Embodiment 3

[0136] Organic solvent-free gellan gum preparation process No.2

[0137] Repeat Example 1, the difference is that the gel cooking step conditions are as follows: adjust the pH of the homogenate mixture to pH 6-8, heat to 70-85°C, and boil the gel for 5-15 minutes to obtain the gel boil mixture.

[0138] As a result, gellan gum No. 2 was also obtained.

[0139] Gellan Gum No.2 is detected in the same manner as in Example 2, and the results show that its characteristics are basically the same as Gellan Gum No.1, wherein the residual ethanol cannot be detected (0ppm), and the gel strength is 1070g / cm 2 .

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Abstract

The invention relates to a new type jointing cold glue, productive technology and usage. This invention possesses low organic solvent residual quantity (such as alcohol residual quantity is not more than 200ppm) and high gel strength, which is fit for many sites.

Description

technical field [0001] The invention relates to the production field of microbial polysaccharide gellan gum, more specifically, the invention relates to a production method of low-acyl gellan gum under the condition of no organic solvent and a novel gellan gum prepared. Background technique [0002] Gellan gum, which was approved by the US FDA in 1992, is a high-quality gel and suspending agent, and is of great application value in the fields of food additives, pharmaceutical excipients, microorganisms, and plant tissue culture media. [0003] China approved the application of gellan gum as a food additive in 1996. In recent years, the application of gellan gum as a high-grade gelling agent and suspending agent in the food industry has gradually increased. [0004] Chinese patent application CN 00125858.3 (application date; October 26, 2000) discloses a production process of microbial polysaccharide gellan gum. [0005] Generally, gellan gum products are divided into two ty...

Claims

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Application Information

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IPC IPC(8): C08B37/00A61K47/36A61K8/73A61Q11/00A61Q13/00
Inventor 张士楚胡德龙丁治
Owner 上海慧源植物胶囊股份有限公司
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