Efficient and energy-saving process for preparing pectin

A high-efficiency, energy-saving, and high-tech technology, applied in the field of pectin extraction, can solve the problems of long extraction time and high energy consumption of the production process, and achieve the effects of improving extraction rate and purity, appropriate size, and simple operation

Inactive Publication Date: 2018-07-17
XINJIANG FUFENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of high energy consumption and long extraction time in the existing production process of pectin, the present invention improves the concentration method, greatly reduces energy consumption and improves product quality

Method used

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  • Efficient and energy-saving process for preparing pectin
  • Efficient and energy-saving process for preparing pectin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A high-efficiency and energy-saving process for preparing pectin, which specifically includes the following steps:

[0033] 1) Take 100 kg of dried sunflower discs and grind them through a 40-mesh sieve with a pulverizer.

[0034] 2) Wash the crushed sunflower disc, add 800kg of water, filter the filter residue to adjust pH=7.0 with 8% (mass fraction) sodium carbonate, then perform high-voltage pulse electric field treatment, then heat to 30°C and stir for 60min; After filtration, the filter residue is used for later use.

[0035] The parameters of the high-voltage pulsed electric field treatment are: field strength 20kv / cm, total treatment time 400μs, pulse width 4μs, pulse frequency 400pps.

[0036] 3) Soak the filter residue with 2 t of water and stir for 60 minutes, then add 5 kg of ammonium oxalate to the extract, adjust the pH to 2 with oxalic acid, soak and stir for 2 hours at a temperature of 75°C.

[0037] 4) The mixed solution is centrifugally filtered, the ...

Embodiment 2

[0044] A high-efficiency and energy-saving process for preparing pectin, which specifically includes the following steps:

[0045] 1) Take 100 kg of dried sunflower discs and grind them through a 60-mesh sieve with a pulverizer.

[0046] 2) Wash the crushed sunflower disc, add 900kg of water, filter the filter residue to adjust pH=7.2 with 68% (mass fraction) sodium acetate, then perform high-voltage pulse electric field treatment, then heat to 45°C and stir for 60min; After filtration, the filter residue is used for later use.

[0047] The parameters of the high-voltage pulsed electric field treatment are: field strength 30kv / cm, total treatment time 300μs, pulse width 4μs, pulse frequency 400pps.

[0048] 3) Soak the filter residue with 2.2 t of water and stir for 50 minutes, then add 8 kg of ammonium oxalate to the extract, adjust the pH to 3.5 with oxalic acid, soak and stir for 1.5 hours at a temperature of 80°C.

[0049] 4) The mixed solution is centrifugally filtered,...

Embodiment 3

[0068] Effects of high-voltage pulsed electric field strength and total processing time on the yield and purity of pectin:

[0069] Set the four groups of field strength 10kv / cm, 20kv / cm, 30kv / cm, and 40kv / cm respectively, and set the time as 100μs, 200μs, 300μs, 400μs, and 500μs. Refer to Example 1 for other operating modes. Such as Figure 1-2 As shown, increasing the field strength from 10kv / cm to 20kv / cm can greatly increase the yield and purity of pectin, and then with the increase of strength, the yield and purity of pectin will not increase significantly, but reaching 40kv / cm will reduce the yield of pectin. Glue production, probably because the cell wall is severely damaged due to excessive field strength, and part of the pectin is lost; similarly, the action time is controlled at 300-500μs, and the pectin production and purity are at the best level, and the high-intensity field strength acts for too long It also leads to a decrease in pectin production.

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Abstract

The invention belongs to the technical field of pectin extraction. An efficient and energy-saving process for preparing pectin comprises the following steps: 1) smashing; 2) cleaning, pH adjustment, electric field treatment and filtration; 3) stirring and pH adjustment; 4) filtration; 5) concentration; 6) alcohol precipitation; 7) repetition of the step 6) once to twice; 8) vacuum freeze drying and smashing.

Description

technical field [0001] The invention belongs to the technical field of pectin extraction, and in particular relates to a process for preparing pectin with high efficiency and energy saving. Background technique [0002] Pectin is an acidic polysaccharide in plants, and it is also one of the main components of dietary fiber, the seventh largest nutrient in the human body. Natural additives, widely used in food, medicine, cosmetics, textile, tobacco and other industries. [0003] The importance of pectin in the food industry lies in the ability of its solution to form a gel under certain conditions. In food processing, pectin can form a gel with sugar and acid under appropriate conditions. It has good water solubility and physical It has stable performance and no peculiar smell. It is a completely non-toxic and harmless natural food additive. The food made of pectin has the characteristics of fine and smooth taste, short gel time and strong gel force, and meets the requiremen...

Claims

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Application Information

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IPC IPC(8): C08B37/06
CPCC08B37/0048
Inventor 包鑫沈伟伟张宗华刘元涛王绍冰
Owner XINJIANG FUFENG BIOTECH
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