Device and method for modifying pectin with dielectric barrier discharge cold plasma

A technology of dielectric barrier discharge and cold plasma, which is applied in discharge tubes, circuits, electrical components, etc., can solve the problems of unstable price, high production cost and high cost of enzyme modification method, achieve green, safe, efficient energy consumption, improve Effect of functional properties, good application potential

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the pectin currently on the market is prepared by chemical modification, but this preparation method is complex and harmful to the environment. High specificity, purity and activity dependence
The thermal modification method has higher production costs due to higher requirements on equipment
In recent years, ultrasound-assisted modification of pectin has also been studied, but compared with plasma technology, its operation is still cumbersome and time-consuming, requiring 30-150 minutes of ultrasound, pH adjustment, precipitation dialysis with ethanol, and then freeze-drying
Therefore, the existing pectin modification methods all have more or less disadvantages that cannot be ignored.

Method used

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  • Device and method for modifying pectin with dielectric barrier discharge cold plasma
  • Device and method for modifying pectin with dielectric barrier discharge cold plasma
  • Device and method for modifying pectin with dielectric barrier discharge cold plasma

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The pectin solution with a concentration of 0.2% is configured through the first control chamber. After the first electric stirrer is turned on, the evenly mixed pectin solution is passed into the cold plasma treatment chamber through the valve, and the temperature between the two electrode plates is adjusted. Discharge pitch and fix height. Set the treatment voltage of the cold plasma treatment chamber to 40kV through the second control room, and the treatment time is 2min, and turn on the second electric stirrer. After the treatment is completed, the filter screen is raised, and after the filtration is completed, the plasma equipment is turned off. The filter screen is lowered, the pectin solution is passed into the drying chamber through a pipeline, and freeze-drying is selected, and the product yield of the pectin is 100%.

[0051] The molecular weight of citrus pectin before modification in this embodiment is 700kDa, the content of uronic acid is 74%, and the degre...

Embodiment 2

[0053] The pectin solution with a concentration of 0.2% is configured through the first control chamber. After the first electric stirrer is turned on, the evenly mixed pectin solution is passed into the cold plasma treatment chamber through the valve, and the temperature between the two electrode plates is adjusted. Discharge pitch and fix height. The processing voltage of the cold plasma processing chamber is set to 70 kV and the processing time is 2 min through the second control chamber, and the second electric stirrer is turned on. After the treatment, the filter screen is raised, and after the filtration is completed, the plasma equipment is turned off, the filter screen is lowered, the pectin solution is passed into the drying chamber through a pipeline, and freeze-drying is selected, and the pectin yield is 90%.

[0054] The molecular weight of citrus pectin before modification in this embodiment is 700kDa, the content of uronic acid is 74%, and the degree of esterific...

Embodiment 3

[0056] The pectin solution with a concentration of 0.4% is configured through the first control chamber. After the first electric stirrer is turned on, the evenly mixed pectin solution is passed into the cold plasma treatment chamber through a valve, and the temperature between the two electrode plates is adjusted. Discharge pitch and fix height. The processing voltage of the cold plasma processing chamber is set to 40 kV, the processing time is 2 min through the second control chamber, and the second electric stirrer is turned on. After the treatment, the filter screen is raised, and after the filtration is completed, the plasma equipment is turned off, the filter screen is lowered, the pectin solution is passed into the drying chamber through a pipeline, and freeze-drying is selected, and the yield of pectin is 100%.

[0057] The molecular weight of citrus pectin before modification in this embodiment is 700kDa, the content of uronic acid is 74%, and the degree of esterifica...

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PUM

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Abstract

The invention belongs to the technical field of bioactive polysaccharide preparation, and discloses a device for modifying pectin by dielectric barrier discharge cold plasma, comprising: a first control room, a solution preparation room, a cold plasma treatment room, a drying room and a second connected in sequence. Two control rooms, wherein: the first control room is used to control the solution preparation room to prepare a uniform pectin solution with a specified concentration; the solution preparation room is provided with a first electric stirrer, and the uniformly stirred pectin solution flows to the cold plasma through a control valve body processing chamber; the cold plasma chamber includes a cold plasma generating device, a filter screen and a second electric stirrer, the cold plasma processing chamber is connected with a second control chamber, and the second control chamber is used to control the cooling in the cold plasma processing chamber The working parameters of the plasma generator and the lifting filter. The modified pectin device of the invention has the advantages of greenness, safety, high efficiency, low cost and the like. The invention also provides a method for modifying pectin by dielectric barrier discharge cold plasma.

Description

technical field [0001] The invention belongs to the technical field of bioactive polysaccharide preparation, and relates to a device and method for modifying pectin by dielectric barrier discharge cold plasma. Background technique [0002] Pectin is a kind of plant-based polysaccharides, and its sources are very extensive. It usually exists in large quantities in the peels of citrus, apple, grapefruit, etc., and is the most abundant source of pectin. The FAO / WHO Joint Committee on Food Additives recommends citrus pectin as a safe natural food additive and does not limit its daily intake. At present, pectin has been widely used in food, cosmetics, chemical industry, textile, medicine and other fields, and as a dietary fiber, pectin can reduce blood sugar, serum cholesterol, stimulate macrophages, anti-inflammatory, prevent cancer, etc. Physiology and Nutritional Effects. The annual demand for pectin in the world is about 40,000 tons, and it is gradually increasing every yea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J37/32A23L33/21
CPCH01J37/32348A23L33/21A23V2002/00A23V2200/30A23V2250/5072
Inventor 孙大文潘雅雯成军虎韩忠
Owner SOUTH CHINA UNIV OF TECH
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