Method for grinding to form powder by using steam-exposition assisted konjac wet method

A wet grinding and konjac technology, applied in food preparation, food forming, food science and other directions, can solve the problems of high cost, short wet processing season, low purity of dry processed products, etc. Functional value, the effect of reducing energy consumption

Inactive Publication Date: 2014-06-04
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a kind of steam-explosion-assisted konjac wet-grinding powder-making method for konjac flour milling technology in which the purity of dry processed products is not high, the wet processing season is short, and the cost is slightly high. Through steam explosion assistance, Reduce the amount of protective agent for konjac wet milling, reduce energy consumption in the production process, and increase the yield and purity of konjac flour

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 200g of fresh konjac, wash and dry the surface moisture, remove epidermal worm scars and terminal buds and other impurities, cut into pieces, add 100ppm sulfite color protection aqueous solution according to the weight ratio of konjac raw material 1:0.5 for pre-soaking for 3s; Put the presoaked konjac raw material in the steam explosion tank, set the steam explosion pressure to 0.8MPa, and the pressure maintenance time to 30s, and then release the pressure instantly to obtain the steam-exploded konjac raw material; put the steam-exploded konjac raw material in a high-efficiency In the wet pulverizer, add 60% alcohol sulfite anti-swelling and color-protecting solution with a weight ratio of 1:1 to steam-exploded konjac; after grinding, carry out dehydration and drying to obtain 15.8 g of konjac ordinary fine powder. The main parameter indexes of the refined powder obtained through measurement are: the content of glucomannan is 84.2%, the viscosity is 36500mPa·s; the...

Embodiment 2

[0027] Weigh 200g of fresh konjac, wash and dry the surface moisture, remove epidermal insect scars and terminal buds and other impurities, cut into pieces, add 150ppm sulfite color protection aqueous solution according to the weight ratio of konjac raw material 1:1 for pre-soaking for 3s; Put the presoaked konjac raw material in the steam explosion tank, set the steam explosion pressure to 0.5MPa, and the pressure maintenance time to 2min, and then release the pressure instantly to obtain the steam-exploded konjac raw material; put the steam-exploded konjac raw material in a high-efficiency In the wet pulverizer, add 60% alcohol sulfite anti-swelling and color-protecting solution with steam-exploded konjac weight ratio of 1:0.5; dehydrate and dry after grinding to obtain 16.2g of konjac ordinary fine powder. The main parameter indexes of the refined powder obtained through measurement are: the content of glucomannan is 83.6%, the viscosity is 35200mPa·s; the content of sulfur ...

Embodiment 3

[0029] Weigh 200g of dried konjac, add distilled water according to the weight-volume ratio of konjac to 1:1, soak for 10min, wash and dry the surface moisture, and cut into pieces, add 100ppm of sulfite protection according to the weight ratio of konjac raw material 1:0.5 Color aqueous solution is carried out presoaking 3s; The konjac raw material after the presoaking process is placed in the steam explosion tank, the setting steam explosion pressure is 0.8MPa, and the maintenance pressure time is 30s, then release pressure instantaneously, promptly obtain steam explosion konjac raw material; Put the steam-exploded konjac raw material in a high-efficiency wet pulverizer, and add 60% alcohol sulfite anti-swelling and color-protecting solution with a weight ratio of 1:1 to the steam-exploded konjac; dehydrate and dry after grinding to obtain 23.4g of konjac ordinary fine powder . The main parameter indexes of the fine powder obtained through measurement are: the content of gluc...

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Abstract

The invention provides a method for grinding to form powder by using a steam-exposition assisted konjac wet method. According to the method, the problems that in the technology for producing the power by using konjac, the purity of products processed by adopting a dry method is not high, a wet method process season is short, the cost is slightly high, and the like are solved. Due to the adoption of steam-exposition assistance, the consumption of a protecting agent in the technology of producing the powder by using the konjac wet method is reduced, energy consumption of the production process is reduced and the yield and the purity of refined powder are improved. The method comprises the steps of pretreatment of the konjac as a raw material, steam-exposition treatment of the konjac, steam-exposition konjac wet-method grinding and the like. The method has the advantages that: due to the use of steam exposition, on one hand, cell walls are damaged, and on the other hand, konjac glucomannan is partially degraded into oligosaccharide, and thereby the contacted area of the protecting agent and the konjac glucomannan is increased, the purity of the konjac glucomannan in konjac powder is improved, and the functional value of the konjac powder is increased.

Description

【Technical field】 [0001] The invention belongs to the field of agricultural product processing, and in particular relates to a steam-explosion-assisted konjac wet-grinding powder making method. 【Background technique】 [0002] Konjac is the only plant found on earth that contains glucomannan in large quantities. China has abundant and high-quality konjac resources, and there were records of cultivating konjac as early as 1700 years ago, but until the early 1980s, its research and utilization was almost blank. However, in the following 20 years, the konjac industry in my country has undergone earth-shaking changes. Today, konjac in our country has developed from a small vegetable crop that fends itself to one of the fist economic crops for farmers in the southern mountainous areas to become rich. The product has also changed from a single black konjac tofu to more than 100 kinds of food at present, and is also widely used in medicine. In industries such as chemical industry,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A23L1/214A23P1/06A23L19/10A23P10/40
Inventor 陈洪章邱卫华
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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