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Low molecular weight (LMW) xanthan gum and preparation method thereof

A xanthan gum and raw material technology, applied in the field of low molecular weight xanthan gum and its preparation, can solve the problems of low molecular weight, wide molecular weight range, narrow molecular weight distribution width, etc., and achieve the effect of improving yield

Active Publication Date: 2014-04-16
JIANGSU SHENHUA PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a xanthan gum with low molecular weight and narrow molecular weight distribution width and its preparation method in view of the shortcomings of the existing xanthan gum products in the market, such as single type and wide molecular weight range

Method used

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  • Low molecular weight (LMW) xanthan gum and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1. Dissolution of xanthan gum

[0030] Weigh xanthan gum, calcium chloride and sodium tetraborate, set aside.

[0031] While stirring, slowly add xanthan gum to the water, and continue stirring for 2 hours until the xanthan gum is completely dissolved. At this time, the concentration of the xanthan gum solution is 3.0% (that is, every 3.0g xanthan gum is dissolved in 100ml water).

[0032] 2. Xanthan Gum Extract

[0033] Under agitation, slowly add calcium chloride and sodium tetraborate to the xanthan gum solution prepared in step 1, the consumption of calcium chloride is 4% of the xanthan gum quality, and the consumption of sodium tetraborate is xanthan gum 2ppm of mass, stir evenly. Then add ethanol with 3 times the volume of water for dissolving xanthan gum while stirring, so that the ethanol concentration in the solution is 65%. After adding ethanol, continue stirring for 30 minutes to precipitate filaments.

[0034] 3. separate

[0035] The precipitated fil...

Embodiment 2

[0052] 1. Dissolution of xanthan gum

[0053] Weigh food additives xanthan gum, calcium chloride and sodium tetraborate, set aside.

[0054] While stirring, slowly add xanthan gum to the water, and continue stirring for 3 hours until the xanthan gum is completely dissolved. At this time, the concentration of the xanthan gum solution is 5.0%.

[0055] 2. Xanthan Gum Extract

[0056]Under agitation, slowly add calcium chloride and sodium tetraborate to the xanthan gum solution prepared in step 1, the consumption of calcium chloride is 5.0% of the xanthan gum quality, and the consumption of sodium tetraborate is xanthan gum The quality of 4ppm, stir well. Then add ethanol with 1.5 times the volume of water for dissolving xanthan gum while stirring, so that the ethanol concentration in the solution is 57%. After adding ethanol, continue stirring for 30 minutes to precipitate filaments.

[0057] 3. separate

[0058] The precipitated filaments are dehydrated and separated wit...

Embodiment 3

[0067] 1. Dissolution of xanthan gum

[0068] Weigh xanthan gum, calcium chloride and sodium tetraborate, set aside.

[0069] While stirring, slowly add xanthan gum to the water, and continue stirring for 1 hour until the xanthan gum is completely dissolved. At this time, the concentration of the xanthan gum solution is 1.5% (g / ml).

[0070] 2. Xanthan Gum Extract

[0071] Under agitation, slowly add calcium chloride and sodium tetraborate to the xanthan gum solution prepared in step 1, the consumption of calcium chloride is 6.0% of the xanthan gum quality, and the consumption of sodium tetraborate is xanthan gum 1ppm of mass, stir evenly. While stirring, add ethanol with 4.5 times the volume of xanthan gum dissolved in water, and stir evenly so that the ethanol concentration in the solution is 78%. After adding ethanol, continue stirring for 30 minutes to precipitate filaments.

[0072] 3. separate

[0073] The precipitated filaments are dehydrated and separated with a...

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Abstract

The invention discloses low molecular weight (LMW) xanthan gum and a preparation method thereof. The method comprises the steps as follows: using xanthan gum, calcium chloride and sodium borate as main raw materials; and carrying out the means of dissolving, extracting, separating, drying and the like on the raw materials so as to prepare high-quality LMW xanthan gum with a narrow molecular weight distribution width. The preparation method provided by the invention has the advantages of simple steps, controllable conditions, low cost and small pollution.

Description

technical field [0001] The invention belongs to the technical field of xanthan gum production, and relates to a low molecular weight xanthan gum and a preparation method thereof. Background technique [0002] Xanthan gum is an extracellular polysaccharide secreted by Xanthomonas campestris. It has a unique molecular structure and excellent properties such as thickening, suspension, emulsification, and stability. It is widely used in daily chemicals, food, medicine, oil production, textiles, Industrial fields such as ceramics and printing and dyeing. Xanthan gum can be dissolved in both cold and hot water, and has high viscosity at low concentration. more stable. In addition, xanthan gum is compatible with other hydrophilic colloids such as locust bean gum, gum arabic, and sodium carboxymethylcellulose, and the combination of the two gums can produce a synergistic effect and increase the viscosity. [0003] The production of xanthan gum in my country began in the 1980s and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00A61K47/36A23L1/03A23L1/09A23L29/00
Inventor 黄盟盟徐国华王希艳王金恒王英燕张芙蓉
Owner JIANGSU SHENHUA PHARMA
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