Method of extracting polysaccharide from pitaya pericarp

A technology of pitaya peel and polysaccharide, which is applied in the field of extracting polysaccharide from pitaya peel, can solve the problems of low polysaccharide yield and the like, and achieves the effects of simple operation, reduced pollution and easy control.

Inactive Publication Date: 2019-01-08
HEZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for efficiently extracting polysaccharides from the pitaya peel for the low yield of polysaccharides extracted from the existing pitaya peel.

Method used

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  • Method of extracting polysaccharide from pitaya pericarp
  • Method of extracting polysaccharide from pitaya pericarp

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Raw material processing: Take 1 kg of pitaya peel, wash it, slice it, place it in a drying box, and dry it at a temperature of 50 ° C. Take out the dried pitaya peel, then mechanically crush it, and use an 80-mesh standard Sieve and sieve, collect the powder after sieving to get dragon fruit peel powder;

[0038] (2) Ultrasonic extraction: mix dragon fruit peel powder with water according to the ratio of 1g to 30mL and pour it into a container, shake well and place it in an ultrasonic instrument for extraction treatment for 30min. The ultrasonic power is 200W and the temperature is 60°C. Repeat the operation of ultrasonic leaching for 3 times, and then use it at a centrifugal speed of 6000 rpm for 15 minutes to collect the centrifuged liquid to obtain an extract;

[0039] (3) Ultrafiltration membrane cut-off concentration: the extract prepared above was separated with an ultrafiltration membrane (10000), and the extract in the membrane was collected, and the extract...

Embodiment 2

[0042] (1) Raw material processing: take 1 kg of pitaya peel, wash it, slice it, place it in a drying box, and dry it at a temperature of 60°C, take out the dried pitaya peel, and then mechanically crush it, using a 100-mesh standard Sieve and sieve, collect the powder after sieving to get dragon fruit peel powder;

[0043] (2) Ultrasonic extraction: mix dragon fruit peel powder with water according to the ratio of 1g to 40mL and pour it into a container, shake well and place it in an ultrasonic instrument for extraction treatment for 40min. The ultrasonic power is 300W and the temperature is 70°C. Repeat the operation of ultrasonic leaching for 5 times, and then use it at a centrifugal speed of 7000 rpm for 30 minutes to collect the centrifuged liquid to obtain an extract;

[0044] (3) Ultrafiltration membrane cut-off concentration: the extract prepared above was separated with an ultrafiltration membrane (15000D), and the extract in the membrane was collected, and the extrac...

Embodiment 3

[0047] (1) Raw material processing: Take 2kg of pitaya peel, wash it, slice it, place it in a drying box, and dry it at a temperature of 55°C. Take out the dried pitaya peel, then mechanically crush it, and use a 90-mesh standard Sieve and sieve, collect the powder after sieving to get dragon fruit peel powder;

[0048] (2) Ultrasonic extraction: mix dragon fruit peel powder with water according to the ratio of 1g to 35mL and pour it into a container, shake well and place it in an ultrasonic instrument for extraction treatment for 35min. The ultrasonic power is 250W and the temperature is 65°C. Repeat the operation of ultrasonic leaching 4 times, and then use it at a centrifugal speed of 6500 rpm for 20 minutes to collect the centrifuged liquid to obtain an extract;

[0049] (3) Ultrafiltration membrane cut-off concentration: the extract prepared above was separated with an ultrafiltration membrane (12000D), the leachate in the membrane was collected, and the leachate was conc...

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Abstract

The invention discloses a method of extracting polysaccharide from pitaya pericarp, in particular a method of extracting polysaccharide from pitaya pericarp by means of ultrasonic waves. The method comprises the specific steps: raw material treatment, ultrasonic extraction, ultrafiltration membrane interception and concentration, freezing and drying and the like. The extraction rate of polysaccharide from pitaya pericarp is improved greatly by means of an ultrasonic extraction method, and meanwhile, the separation process of polysaccharide of pitaya pericarp is free of pollution, solvent residues and phase change by means of a membrane separation technology. The extraction method is simple to operate and convenient to control and has a relatively high pitaya polysaccharide extraction efficiency. By combining the ultrasonic extraction and membrane separation technologies organically, the extracted polysaccharide of pitaya pericarp is free of any organic solvents, the physiological activity of polysaccharide in the pitaya pericarp is kept to the maximum extent, the product is relatively good in quality, and the method can be widely applied to the field of food processing and medicines.

Description

technical field [0001] The invention belongs to the deep processing and extraction technology of pitaya peel polysaccharides of agricultural products, specifically relates to a method for extracting polysaccharides from pitaya peels, and belongs to the technical field of deep processing of agricultural products. Background technique [0002] Dragon fruit (Hylocereusundatus) is a cactus plant. Dragon fruit has excellent ornamental value. It has a unique scene in the flowering and fruiting stages. As dragon fruit, also known as fairy honey fruit and so on. Dragon fruit is rich in nutrients such as sugar, organic acid, protein, and vitamins. It is a tropical fruit with high nutritional and health care value. Therefore, dragon fruit, as a source of functional ingredients, provides nutrients that may prevent related diseases and is beneficial to improve consumers' physical and mental health. Pitaya peel contains a large amount of plant polysaccharides. Studies have shown that p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/00
CPCC08B37/0003
Inventor 帅良廖玲燕宋慕波段振华
Owner HEZHOU UNIV
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