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Method for extracting pectin from fresh orange peel

A citrus peel and fresh technology, which is applied in the field of pectin extraction, can solve the problem of single processing method of fresh citrus peel, achieve the effect of reducing the peel drying process, increasing the yield, and improving economic benefits

Pending Publication Date: 2022-08-02
浙江丰岛食品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for extracting pectin from fresh citrus peels to solve the deficiencies in the prior art for the single treatment method of fresh citrus peels in domestic citrus canned processing plants

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A method for extracting pectin from fresh citrus peel according to the present embodiment, comprising the following steps:

[0032] Crushing, squeezing and cleaning: fresh citrus peel (Zhejiang Ninghai tangerine) is added with water, broken into long strips with a width of 0.6cm, and screw extrusion. After extrusion, the moisture content of fresh citrus peel is 77%.

[0033] Pectin extraction: Wash the fresh citrus peel after extrusion, mix with 6 times of hot water after measuring, add acid to adjust pH to 1.5, keep stirring at 90°C, and extract for 2 hours.

[0034] Separation: Centrifuge at 4000 rpm for 10 minutes to collect the separation liquid, which is clarified by suction filtration through a diatomite-coated Buchner funnel to collect the clarified liquid.

[0035] Decolorization: The use of resins to remove pigments from clear solutions.

[0036] Concentration: The obtained filtrate was placed in a vacuum concentration device, concentrated at a low temperature...

Embodiment 2

[0040] A method for extracting pectin from fresh citrus peel according to the present embodiment, comprising the following steps:

[0041] Crushing, squeezing and cleaning: add water to fresh citrus peels (Sanmen Tangerine, Taizhou, Zhejiang), crush into long strips with a width of 0.4cm, and screw extrusion. After extrusion, the moisture content of fresh citrus peels is 83%.

[0042] Pectin extraction: Wash the fresh citrus peel after extrusion, mix with 7 times of hot water after measuring, add acid to adjust to pH 2.0, keep stirring at 85 degrees, and extract for 4 hours.

[0043] Separation: Centrifuge at 4000 rpm for 10 minutes to collect the separation liquid, which is clarified by suction filtration through a diatomite-coated Buchner funnel to collect the clarified liquid.

[0044] Decolorization: The use of resins to remove pigments from clear solutions.

[0045] Concentration: The obtained filtrate was placed in a vacuum concentration device, concentrated at a low te...

Embodiment 3

[0049] A method for extracting pectin from fresh citrus peel according to the present embodiment, comprising the following steps:

[0050] Crushing, squeezing and cleaning: add water to fresh citrus peel (Zhejiang Yuanjiang tangerine), break into long strips with a width of 0.8cm, screw extrusion, and the moisture content of fresh citrus peel after extrusion is 80%.

[0051] Pectin extraction: Wash the fresh citrus peel after extrusion, mix with 8 times of hot water after measuring, add acid to adjust the pH to 2.5, keep stirring at 70 degrees, and extract for 7 hours.

[0052] Separation: Centrifuge at 4000 rpm for 10 minutes to collect the separation liquid, which is clarified by suction filtration through a diatomite-coated Buchner funnel to collect the clarified liquid.

[0053] Decolorization: The use of resins to remove pigments from clear solutions.

[0054] Concentration: the obtained filtrate was placed in a vacuum concentration device, concentrated at a low temperat...

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Abstract

The invention discloses a method for extracting pectin from fresh orange peel. The method comprises the following steps: crushing, extruding and cleaning, extracting pectin, separating, decoloring, concentrating, precipitating and drying. According to the method disclosed by the invention, the fresh citrus peels produced by a citrus tin factory can be fully utilized, resource waste is avoided, the pectin product with high additional value is extracted by adopting the method, and the final product meets the national standard GB25533-2010 and has a very good market prospect.

Description

technical field [0001] The invention relates to the technical field of pectin extraction, in particular to a method for extracting pectin from fresh citrus peels. Background technique [0002] Pectin is widely present in plant tissues, mainly forming the middle layer of the cell wall, which plays the role of tissue hardening and water retention. Pectin is one of the main components of dietary fiber, and has anti-diarrhea, anti-cancer, and diabetes treatment effects. In industry, it is used to make laxatives, hemostatic agents, toxic metal antidote, etc. At the same time, pectin also has good gelling and emulsification stability, and is widely used in the production of jelly, jam, yogurt and fruit juice. [0003] The peels of citrus, lemon, apple, etc. all contain pectin. Domestic pectin processing plants extract pectin from dried apple peel, orange peel, and lemon peel. 25% of citrus (wide-skinned orange) peels can be obtained from the citrus peels. Since there is no system...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/06A23L29/231A23L29/10
CPCC08B37/0048A23L29/231A23L29/10A23V2002/00A23V2200/222A23V2200/228A23V2250/5072
Inventor 徐孝方黎云龙甄益龙
Owner 浙江丰岛食品股份有限公司
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