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Method for extracting pectin from orange peel and shaddock peel

A technology of grapefruit peel and citrus peel, applied in the field of biochemical pharmacy, can solve the problems of long extraction process, unfavorable solvent for human health, etc., and achieves the effects of low cost, elimination of potential safety hazards and environmental pollution, and simple implementation process.

Inactive Publication Date: 2012-10-17
吕维学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the extraction method of pectin adopts the traditional acid and enzymatic extraction methods. Because the extraction process is long, many different solvents are added, and the residual solvent is not conducive to human health, a new method is sought. The method for producing pectin is a technical problem to be solved urgently by those skilled in the art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for extracting pectin from citrus peels and pomelo peels in Example 1 of the present invention comprises the following steps in turn: cleaning and crushing the leftovers of citrus peels and pomelo peels to a particle size of 2-3mm, and then placing Treat with steam or boiling water for 5-8 minutes to inactivate pectinase activity, then soak in water for 30 minutes, heat to 90°C for 5 minutes, and rinse with water several times to remove bitterness, pigment and soluble impurities. Then mix and homogenize, press filter, ultrafilter, nanofiltration I, nanofiltration II, stir into gel, press filter, distill and reuse, spray dry and pulverize to make pure product. Its specific implementation is as follows:

[0018] 1. Put 10kg of the processed material in the homogenizer, add 15kg of water and starter according to the ratio of 1:1.5 between the material and water, then add hydrochloric acid with a concentration of 95-99% to adjust its pH value to 2, and turn on the ...

Embodiment 2

[0028] A method for extracting pectin from citrus peels and pomelo peels in Example 2 of the present invention comprises the following steps in turn: cleaning and pulverizing the leftovers of citrus peels and pomelo peels to a particle size of 2-3mm, and then placing Treat with steam or boiling water for 5-8 minutes to inactivate pectinase activity, then soak in water for 30 minutes, heat to 90°C for 5 minutes, and rinse with water several times to remove bitterness, pigment and soluble impurities. Then mix and homogenize, press filter, ultrafilter, nanofiltration I, nanofiltration II, stir into gel, press filter, distill and reuse, spray dry and pulverize to make pure product. Its specific implementation is as follows:

[0029] 1. Put 10kg of the treated material in the homogenizer, add 20kg of water and starter according to the ratio of 1:2 between the material and water, then add hydrochloric acid with a concentration of 95-99% to adjust the pH value to 2.8, and turn on the...

Embodiment 3

[0039]A method for extracting pectin from citrus peels and pomelo peels in Example 3 of the present invention comprises the following steps in turn: cleaning and pulverizing the leftovers of citrus peels and pomelo peels to a particle size of 2-3mm, and then placing Treat with steam or boiling water for 5-8 minutes to inactivate pectinase activity, then soak in water for 30 minutes, heat to 90°C for 5 minutes, and rinse with water several times to remove bitterness, pigment and soluble impurities. Then mix and homogenize, press filter, ultrafilter, nanofiltration I, nanofiltration II, stir into gel, press filter, distill and reuse, spray dry and pulverize to make pure product. Its specific implementation is as follows:

[0040] 1. Put 10kg of the treated material in the homogenizer, add 30kg of water and starter according to the ratio of 1:3 between the material and water, then add hydrochloric acid with a concentration of 95-99% to adjust its pH value to 3, and turn on the ma...

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Abstract

The invention discloses a method for extracting pectin from orange peel and shaddock peel, which relates to the technical field of biochemical pharmacy. A technical scheme provided in the invention is as follows: the method for extracting pectin from orange peel and shaddock peel comprises the successive steps of cleaning leftovers of orange peel and shaddock peel, crushing the leftovers of orange peel and shaddock peel into particles with a particle size of 2 to 3 mm, treating the obtained particles with steam or boiling water for 5 to 8 min to passivate the activity of pectase, steeping the particles in clear water for 30 min, heating an obtained mixture to a temperature of 90 DEG C for 5 min, carrying out rinsing with clear water several times to remove bitter, pigments and soluble impurities, and after the above-mentioned pre-treatment, carrying out mixing and homogenizing, press filtration, ultrafiltration, nanofiltration I, nanofiltration II, stirring for pectin formation, press filtration, distillation and recycling, spray drying and crushing so as to prepare a pure product. Compared with the prior art, the invention has the following striking substantive advantages and remarkable progress: usage of traditional extraction methods and harmful organic solvents is reduced, original biological activity is retained during the process of extraction, the extraction process is simple and environment-friendly, and the method costs little and is applicable to large scale industrial production.

Description

technical field [0001] The invention relates to the technical field of biochemical pharmacy, in particular to the technical field of a method for extracting pectin from citrus peels and pomelo peels. Background technique [0002] Pectin (Pcctin) is a group of polygalacturonic acid. It is water-soluble and can be separated industrially, and its molecular weight is about 50,000 to 300,000. Under suitable conditions, its solution can form a gel and partially methoxylate (methyl esterification, that is, form methanol ester), and its main component is partially formylated a(I,4)-D-galactose aldehyde acid. Residual carboxyl units exist as free acids or form salts such as amine, potassium, sodium and calcium. [0003] Pectin is found in the cell walls and inner layers of plants, and is the support material of the inner cells. Different vegetables and fruits have different tastes, which are mainly determined by the differences in the pectin content they contain. According to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06C12S3/12
Inventor 吕维学董娜马翔
Owner 吕维学
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