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Microwave-assisted extraction method of beet pectin

A beet pectin and microwave-assisted technology, which is applied in the field of pectin extraction and purification, can solve the problems of insufficient utilization of beet waste meal, etc., and achieve the effects of easy operation, low production cost, and no corrosion of equipment

Inactive Publication Date: 2014-06-25
SHIHEZI UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For these sugar wastes, at present, they are mainly made into granulated dry meal and sold as feed. On the surface, the waste has been utilized, but from the perspective of maximizing resource utilization, the utilization of sugar beet waste meal is far from sufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] This embodiment relates to a method for extracting pectin from sugar beet dry meal. The method comprises the steps of:

[0018] Step 1: Grinding 10 parts of dry beet dregs, passing through a 200-mesh sieve, washing the dried beet dregs with 20 parts of tap water for 5 times until the water is clear, and quickly placing the washed beet dregs in a microwave heating device, Adjust the microwave power to 500W, process for 4 minutes, and then dry at 50°C to obtain dry sugar beet meal powder;

[0019] Step 2, adding 100 parts of 0.8% sodium hexametaphosphate solution to the above-mentioned dried sugar beet dregs powder, extracting pectin, treating with a microwave power of 700W for 15 minutes, and filtering to obtain an extract;

[0020] Step 3, add 1.0 parts of activated carbon to the extract, stir, heat in a water bath to 70°C for 40 minutes to decolorize, filter, concentrate under reduced pressure to 1 / 4 of the volume of the extract, add 3 times the volume of absolute eth...

Embodiment 2

[0022] This embodiment relates to a method for extracting pectin from sugar beet dry meal. The method comprises the steps of:

[0023] Step 1: Grinding 10 parts of dry beet dregs, passing through a 100-mesh sieve, washing the dried beet dregs with 20 parts of tap water for 4 times until the water is clear, and quickly placing the washed beet dregs in a microwave heating device, Adjust the microwave power to 400W, process for 5 minutes, and then dry at 60°C to obtain dry sugar beet meal powder;

[0024] Step 2, adding 200 parts of 0.5% sodium hexametaphosphate solution to the above-mentioned dried beet dregs powder, extracting pectin, treating with microwave power 500W for 15 minutes, filtering to obtain the extract;

[0025] Step 3, add 0.5 parts of activated carbon to the extract, stir, heat in a water bath to 80°C for 30 minutes to decolorize, filter, concentrate under reduced pressure to 1 / 4 of the volume of the extract, add 4 times the volume of absolute ethanol to the co...

Embodiment 3

[0027] This embodiment relates to a method for extracting pectin from sugar beet dry meal. The method comprises the steps of:

[0028] Step 1: Grinding 10 parts of dry beet dregs, passing through an 80-mesh sieve, washing the dried beet dregs with 20 parts of tap water for 3 times until the water is clear, and quickly placing the washed beet dregs in a microwave heating device, Adjust the microwave power to 600W, process for 3 minutes, and then dry at 70°C to obtain dry sugar beet meal powder;

[0029] Step 2, adding 200 parts of 0.8% sodium hexametaphosphate solution to the above-mentioned dried beet dregs powder, extracting pectin, treating with microwave power 600W for 5 minutes, filtering to obtain the extract;

[0030] Step 3, add 1.5 parts of activated carbon to the extract, stir, heat in a water bath to 80°C for 30 minutes to decolorize, filter, concentrate under reduced pressure to 1 / 4 of the volume of the extract, add 3 times the volume of absolute ethanol to the con...

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Abstract

The invention discloses a microwave-assisted extraction method of beet pectin. The method comprises the following steps: 1) pretreating dried beet pellets: crushing, screening, cleaning, heating by using microwave for enzyme deactivation, and drying; 2) mixing the pretreated dried beet pellets with sodium hexametaphosphate solution, extracting beet pectin by using microwave, and filtering to acquire extracting solution; 3) decoloring and concentrating the extracting solution, adding absolute ethyl alcohol into the concentrated solution for precipitation, and collecting the precipitate to acquire solid pectin. The extraction method of the beet pectin overcomes the defect of heavy use of acid solvent in a traditional technology; the acquired pectin has high purity, small damage to molecular structure and no solvent residues; waste beet pellets in a beet sugar factory can be efficiently recycled and the added value of products is greatly improved; meanwhile, the method is simple and efficient in process and easy for industrialization.

Description

technical field [0001] The invention relates to a method for extracting and purifying pectin, in particular to a method for extracting pectin from sugar beet dry dregs. Background technique [0002] Pectin is a polysaccharide polymer compound. The basic components of pectin are homogalacturonic acid (HGA55-65%) and polyrhamnogalacturonic acid I (RG-I20-35%), and there are arabinose, rhamnose, Neutral sugars such as galactose. Pectin has good gelling and emulsifying properties, and has physiological functions such as anti-inflammatory, anti-cancer, and anti-diarrhea, and is widely used in food, medicine, cosmetics, and textile industries. [0003] Natural pectin is widely found in green higher plant tissues, and it softens the tissues. Pectin is an important component of the plant cell wall, mainly present in the primary wall and intercellular layer of the cell wall. The cell wall is the "calcium pool" of plants. The main form of pectin in the cell wall is "protopectin" a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06
Inventor 张海燕陈良刘志勇李德强张兵
Owner SHIHEZI UNIVERSITY
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