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Method for extracting pectin from sugar orange defective fruits

A technology of tangerine and sub-fruit and sugar tangerine, applied in the field of natural pectin, can solve the problems of low methoxyl pectin, great influence on product quality, poor product solubility, etc.

Inactive Publication Date: 2018-01-26
何会平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method belongs to the salting-out method. Although the process of ethanol precipitation method consumes a large amount of alcohol is improved, another impurity salt is introduced in the process. The desalination work is cumbersome and difficult to complete completely. It has a great impact on product quality and is easy to generate low methoxide. Pectin-based, and the product has poor solubility

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] a) Disposal of defective tangerine tangerines: remove leaves, silt, etc., cut off the stalk, wash with water, drain and weigh.

[0036] b) Soak in hot salt water for 2 hours, keeping the water temperature at 40°C. The salt content of salt water is 10%. Then remove and drain.

[0037] c) Then sterilize the fruit by microwave for 1min; microwave frequency: 3000MHz.

[0038] d) Separate the peel and pulp, take the peel, and crush until the fineness is 0.1mm.

[0039] e) Soak the peel with hexane, petroleum ether and / or ethyl acetate at room temperature; soak three times for 4 hours each time, and the amount of hexane, petroleum ether and / or ethyl acetate used each time is 3 times the amount of peel l / kg. Filter out the solvent after each soak before proceeding to the next one.

[0040] f) Soak the filter residue in 2% ammonia water at 80-90°C for 30 minutes; filter and wash with water until neutral;

[0041] g) Add water and glucoamylase and / or cellulase to the produ...

Embodiment 2

[0051] a) Disposal of defective tangerine tangerines: remove leaves, silt, etc., cut off the stalk, wash with water, drain and weigh.

[0052] b) Soak in hot salt water for 2 hours, keeping the water temperature at 40°C. The salt content of salt water is 10%. Then remove and drain.

[0053] c) Then sterilize the fruit by microwave for 1min; microwave frequency: 3000MHz.

[0054] d) Separate the peel and pulp, take the peel, and crush until the fineness is 0.1mm.

[0055] e) Soak the peel with hexane, petroleum ether and / or ethyl acetate at room temperature; soak three times for 4 hours each time, and the amount of hexane, petroleum ether and / or ethyl acetate used each time is 3 times the amount of peel l / kg. Filter out the solvent after each soak before proceeding to the next one.

[0056] f) Soak the filter residue in 1% ammonia water at 80-90°C for 30 minutes; filter and wash with water until neutral;

[0057] g) Add water and glucoamylase and / or cellulase to the produ...

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PUM

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Abstract

The invention discloses a method for extracting pectin from sugar orange defective fruits. The sugar orange defective fruits are taken as raw materials. The method mainly comprises the following steps: fruit pretreatment, peel smashing, hexane, petroleum ether and / or ethyl acetate soaking, hot alkaline water soaking, enzymolysis with saccharifying enzyme and / or cellulose, acid extraction, hexane,petroleum ether and / or ethyl acetate precipitation, water dissolution, ethanol precipitation, drying and smashing. The method disclosed by the invention has the advantages of an extraction method, thetechnology of pretreatment is also greatly improved, the production cycle is shortened, the disadvantage that a great deal of alcohol is consumed with an ethyl alcohol precipitation method is overcome, the problem caused by introduction of impurity salt with a salt fractionation method is also solved, and the method has great technological innovation compared with the prior art.

Description

technical field [0001] The invention relates to natural pectin, in particular to a method for extracting pectin from Shatangju residual fruit. Background technique [0002] Natural pectin is extracted from plant cell walls. It has good gelation and emulsification stability and is widely used in food, cosmetics and medicine. At present, domestic and foreign studies on the extraction of pectin from plants mainly focus on extraction separation and precipitation separation. The main raw materials for pectin extraction are citrus peels such as pomelo, rock sugar orange, mandarin orange, and navel orange. The main process in production is the acid-soluble alcohol precipitation method. This process has the problems of large ethanol consumption and low pectin purity. [0003] CN 101906175 B discloses a preparation method of Guanyincao pectin. In the method, the pectin is prepared from Guanyincao with a pectin content as high as 40 percent as a raw material, and the pectin is prepa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06
Inventor 何会平
Owner 何会平
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