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Method for pretreating raw material for preparing pectin

A pretreatment and raw material technology, which is applied in the field of raw material pretreatment and raw material processing of pectin preparation, can solve the problems of low pectin extraction rate, dark yellow color, poor quality, etc., and achieve high and stable quality, high quality, The effect of reducing energy consumption

Inactive Publication Date: 2014-07-16
赛珂睿德生物医药科技(上海)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a raw material pretreatment method for pectin preparation, which can effectively remove calcium, iron and other metal ions that block pectin, and can effectively remove the pigment and lipid components in the raw material. In addition, the method is simple, has high extraction rate, good quality, low cost and greatly reduces the pollution caused to the environment, effectively overcomes the low extraction rate of pectin in the prior art, the pigment and inorganic Residues of impurities such as salt and lipid components cause deficiencies such as low purity, dark yellow color, poor quality, and unstable quality of pectin products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The citrus peel is cleaned, minced, and dried; 2. Adding a mass fraction of 0.5% sodium hydroxide aqueous solution to the dried citrus peel, the addition of the sodium hydroxide solution is 5 times the volume of the citrus peel, Soak at 25°C for 0.5h, filter; remove the aqueous sodium hydroxide solution; ③ add a mass fraction of 40% ethanol solution to the filtered citrus peel, the amount of the ethanol solution is 5 times the volume of the citrus peel, and use a high-voltage pulse electric field For the treatment, the electric field strength used is 12kV / cm, the number of pulses is 6, and the temperature is 40°C. Then press and filter, wash once with water at 30°C, press and filter, and the obtained citrus peel is the pretreated citrus peel. Its water content is 75% to 85%. Then, acid extraction, filtration, concentration, precipitation, drying and crushing are carried out according to the conventional pectin production process to obtain high-quality pectin.

Embodiment 2

[0037] ①Clean the apple pomace, mince it, and dry it; ②add 0.5% sodium hydroxide aqueous solution to the dried apple pomace, and the addition amount of the sodium hydroxide aqueous solution is 10% of the volume of the citrus peel. times, soaked at 20°C for 2h, and filtered; remove the aqueous sodium hydroxide solution; ③add a 70% ethanol solution to the filtered apple pomace, the amount of the ethanol solution is 10 times the volume of the apple pomace, and use High-voltage pulsed electric field treatment, the electric field strength used is 18kV / cm, the number of pulses is 12, the temperature is 60°C, and then pressed and filtered, washed twice with 20°C water, pressed and filtered, the obtained apple pomace is pretreated The best apple pomace has a water content of 65% to 75%. Then, acid extraction, filtration, concentration, precipitation, drying and crushing are carried out according to the conventional pectin production process to obtain high-quality pectin.

Embodiment 3

[0039] ①Clean the sunflower pomace, mince it, and dry it at low temperature; ②Add a potassium hydroxide aqueous solution with a mass fraction of 2% to the dried sunflower pomace. 8 times, 30 DEG C of soaking 1h, filter; remove potassium hydroxide aqueous solution; ③ add mass fraction to the sunflower pomace after filtering and be the methanol solution of 60%, the addition amount of this methanol solution is 8 times of the volume of sunflower pomace, Treat with a high-voltage pulsed electric field, the electric field strength used is 18kV / cm, the number of pulses is 8, and the temperature is 50°C, then squeeze and filter, wash 3 times with 40°C water, press and filter, and the sunflower pomace obtained is the pre-treated sunflower pomace. The treated sunflower pomace has a water content of 60% to 65%. Then, acid extraction, filtration, concentration, precipitation, drying and crushing are carried out according to the conventional pectin production process to obtain high-quality...

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Abstract

The invention relates to a method for pretreating a raw material for preparing pectin. The method comprises the steps: 1, selecting and weighing the raw material, cleaning, rubbing, and drying; 2, adding an alkaline solution, soaking and filtering; 3, adding an alcohol solution, and treating by using a high-pressure pulse electric field; 4, squeezing and filtering, washing with water, and squeezing and filtering to obtain the raw material which is a pretreated raw material for preparing the pectin. The method is capable of effectively removing metal ions such as calcium and iron of closing the pectin, and effectively removing pigments and lipid components in the raw material, and is simple, high in extraction rate, excellent in quality, low in cost, and greatly reduced in pollution to the environment.

Description

technical field [0001] The invention relates to the processing of raw materials in the technical field of pectin production and processing, in particular to a raw material pretreatment method for pectin preparation. Background technique [0002] Pectin is a natural polymer in plant cell walls and is widely used in various foods, medicines and cosmetics as a thickener, gelling agent, emulsifier or stabilizer. According to reports, the current annual consumption of pectin in the world is 45,000 tons, increasing at a rate of 20% every year. my country consumes more than 1500 tons of pectin every year, 80% of which is dependent on imports, and the demand shows a high-speed growth trend compared with the world average level. [0003] In nature, pectin exists in plants in the form of water-insoluble pectin, among which the content of citrus, apple, lemon, grapefruit, sweet potato, sunflower, pumpkin, etc. is high, especially the pectin content of citrus peel can reach 10-30% , t...

Claims

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Application Information

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IPC IPC(8): C08B37/06
Inventor 丁侃黄雄超姜猛
Owner 赛珂睿德生物医药科技(上海)有限公司
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