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Process of extracting high-purity pectin from apple pomace

An apple pomace, high-purity technology, applied in the field of pectin extraction, can solve the problems of environmental pollution, waste of resources, etc., to improve pectin extraction rate and pectin purity, improve pectin precipitation rate and pectin purity, and promote rapid The effect of leaching

Active Publication Date: 2018-07-13
DANGSHAN HAISHENG PECTIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, except a small amount of apple pomace is used as feed, most of the others are discarded as garbage, which greatly wastes resources and pollutes the environment

Method used

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  • Process of extracting high-purity pectin from apple pomace
  • Process of extracting high-purity pectin from apple pomace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Rinse and remove impurities: add warm water at 50-60°C to 25 kg of apple pomace, the ratio of material to liquid is 1:5, stir at 50-60°C for 15 minutes at a stirring speed of 30 r / min, centrifugally filter, and take the filter residue ;

[0030] (2) Flour making: the filter residue is dehydrated to constant weight through a freeze dryer, and is made into a 60-mesh powder by a pulverizer to obtain apple pomace powder;

[0031] (3) Acid extraction: Put the apple pomace powder into the extraction tank, then add hot water at 80-90°C, the ratio of solid to liquid is 1:5, adjust the pH value to 2 with dilute hydrochloric acid, and then stir at 120 r / min in the Keep stirring at 80-90°C for 3 hours, then raise the temperature to reflux state, keep stirring for 10 minutes, centrifugally filter, and take the filtrate;

[0032] (4) Decolorization: transfer the filtrate to the decolorization tank, and heat up to 70-80°C, then add a decolorizer (activated carbon) with 2% dry we...

Embodiment 2

[0038] (1) Rinse and remove impurities: add warm water at 50-60°C to 25 kg of apple pomace, the ratio of material to liquid is 1:5, stir at 50-60°C for 15 minutes at a stirring speed of 30 r / min, centrifugally filter, and take the filter residue ;

[0039] (2) Flour making: the filter residue is dehydrated to constant weight through a freeze dryer, and is made into a 60-mesh powder by a pulverizer to obtain apple pomace powder;

[0040] (3) Acid extraction: Put the apple pomace powder into the extraction tank, then add hot water at 80-90°C, the ratio of solid to liquid is 1:5, adjust the pH value to 2 with dilute hydrochloric acid, and then stir at 120 r / min in the Keep stirring at 80-90°C for 3 hours, then raise the temperature to reflux state, keep stirring for 10 minutes, centrifugally filter, and take the filtrate;

[0041] (4) Decolorization: transfer the filtrate to the decolorization tank, and heat up to 70-80°C, then add a decolorizer (activated carbon) with 2% dry we...

Embodiment 3

[0047] (1) Rinse and remove impurities: add warm water at 50-60°C to 25 kg of apple pomace, the ratio of material to liquid is 1:5, stir at 50-60°C for 15 minutes at a stirring speed of 30 r / min, centrifugally filter, and take the filter residue ;

[0048](2) Flour making: the filter residue is dehydrated to constant weight through a freeze dryer, and is made into a 60-mesh powder by a pulverizer to obtain apple pomace powder;

[0049] (3) Acid extraction: Put the apple pomace powder into the extraction tank, then add hot water at 80-90°C, the ratio of solid to liquid is 1:5, adjust the pH value to 2 with dilute hydrochloric acid, and then stir at 120 r / min in the Keep stirring at 80-90°C for 3 hours, then raise the temperature to reflux state, keep stirring for 10 minutes, centrifugally filter, and take the filtrate;

[0050] (4) Decolorization: transfer the filtrate into a decolorization tank, and heat up to 70-80°C, then add a decolorant with 2% dry weight of apple pomace ...

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Abstract

The invention discloses a process of extracting high-purity pectin from apple pomace, and relates to the technical field of pectin extraction. The process comprises the following steps: (1) rinsing for impurity removal; (2) powdering; (3) acid extraction; (4) decoloration; (5) concentration; (6) pectin settlement; (7) purification; (8) drying and powdering. According to the process, soluble sugarand part of pigments are removed from the apple pomace through rinsing operation; the apple pomace is granulated through the powdering operation to promote rapid leaching of the pectin during subsequent acid extraction; the pigments in a pectin extracting solution are effectively removed through the decoloration operation; by use of a pectin settling agent, the pectin settling rate and the pectinpurity are improved, so that the content of galacturonic acid in the prepared finished pectin is up to 85 percent or above, and the pectin extraction rate is up to 90 percent or above.

Description

Technical field: [0001] The invention relates to the technical field of pectin extraction, in particular to a process for extracting high-purity pectin from apple pomace. Background technique: [0002] Pectin is a polysaccharide macromolecular compound, a component of the cell wall, and exists with cellulose, with a molecular weight of 10,000 to 400,000. The finished product of pectin is a powdery substance, light white or light yellow, which can be used to prepare jams and jellies, and can also be used to make fruity marshmallows, crystal fudge, sand fudge, and sugar-free candies. Pectin and aluminum salts of pectin can inhibit the intestinal absorption of cholesterol and triglycerides, and can be used as an adjuvant treatment for cardiovascular diseases such as arteriosclerosis. [0003] Apple pomace is composed of peel, core and residual pulp. It contains soluble sugar, vitamins, minerals, cellulose and other substances. It is a good juicy feed resource. At present, exc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06
CPCC08B37/0003C08B37/0048
Inventor 怡文辉苏永全常晓明王琴
Owner DANGSHAN HAISHENG PECTIN
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