Low-alcohol concentration wet processing method for refined konjak powder

A technology of konjac powder and alcohol concentration, which is applied in the field of food processing, can solve the problems of high price, loss of glucomannan, high processing cost of wet processing konjac powder, etc., and achieve the effect of reducing processing cost

Active Publication Date: 2013-12-25

南京喜之郎食品有限公司

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AI-Extracted Technical Summary

Problems solved by technology

In addition, the excessive swelling of fine powder particles will cause serious loss of glucomannan. Therefore, in the existing wet processing process of konjac fine powder, the concentration of alcohol used is usually not less than ...

Method used

The method of this low alcohol concentration wet processing konjac fine powder is that under the environment of -10 ℃~0 ℃, konjaku is pulverized, ground and separated, so only need to use concentration is 5%~15% Alcohol can prevent exc...

Abstract

The invention discloses a low-alcohol concentration wet processing method for refined konjak powder. The method can effectively reduce processing cost. The method comprises the following steps: A, cleaning and peeling konjak; B, cutting the konjak and protecting the color of the konjak; C, crushing, grinding and separating the konjak at a temperature of -10 to 0 DEG C, i.e., mixing the konjak with alcohol with a concentration of 5 to 15%, then crushing an obtained mixture to obtain pulp, subjecting the pulp to solid-liquid separation to obtain konjak powder, mixing the konjak powder with alcohol with a concentration of 5 to 15%, carrying out grinding to obtain a solid-liquid mixture and subjecting the solid-liquid mixture to centrifugation so as to obtain the refined konjak powder; and D, drying the refined konjak powder. According to the method, crushing, grinding and separation of the konjak are carried out at a temperature of -10 to 0 DEG C, so usage of alcohol with a concentration of only 5 to 15% is capable of preventing refined powder particles from excess swelling or formation of sol, thereby substantially reducing cost. The method is suitable for being popularized and applied in the field of food processing.

Application Domain

Food preparation

Technology Topic

Food processingAlcohol +2

Examples

Experimental program(1)

Example Embodiment

[0018] In the existing wet processing method of konjac fine powder, the process of pulverizing, grinding and separating the konjac is all carried out at normal temperature, and konjac is also at normal temperature. Under this process condition, the used The alcohol concentration is usually not lower than 30%, so as to ensure that the fine powder particles do not swell excessively or form a sol, and ensure the solubility of the product. However, the processing cost of this method is also high due to the high alcohol concentration used. , the present invention finds through in-depth research on the existing technology that when the konjac is in a lower temperature environment, the probability of excessive swelling or sol formation of the konjac powder particles is greatly reduced, so that only the alcohol with a lower concentration can be used Reach the effect identical with existing wet process, in order to realize above-mentioned object, the present invention adopts following mode to realize:

[0019] The method for this low-alcohol concentration wet processing konjac fine powder, comprises the following steps:

[0020] A. Wash and peel the konjac, manually remove the terminal buds and roots of the konjac corm, put it in a washing machine for cleaning, and remove the outer skin;

[0021] B, the konjac is cut and protected, and the peeled konjac is cut into pieces with a dicing machine. After the segmentation, the sulfite solution with an effective sulfur dioxide concentration of 25 to 100 mg/liter is used to protect the color;

[0022] C. Konjac is pulverized, ground and separated at a temperature of -10°C to 0°C: first, konjac is mixed with alcohol with a concentration of 5% to 15% and then crushed to obtain a slurry, and then the obtained The slurry is subjected to solid-liquid separation to obtain konjac powder, then the konjac powder is mixed with alcohol with a concentration of 5% to 15%, and then ground to obtain a solid-liquid mixture, and finally, the obtained solid-liquid mixture is centrifuged to obtain konjac fine powder;

[0023] D, the obtained konjac powder is dried.

[0024] The low-alcohol concentration wet processing method of konjac fine powder is to crush, grind and separate the konjac under the environment of -10°C to 0°C, so that only 5% to 15% alcohol is needed. Prevent excessive swelling or sol formation of fine powder particles, and the viscosity of the product will not decrease. Compared with the alcohol with a concentration of not less than 30% used in the prior art, its processing cost is greatly reduced.

[0025] The following is a comparative test table of the swelling degree of konjac powder particles (the ratio of the mass after swelling to the mass before swelling) after mixing the konjac fine powder prepared by the wet method with the same concentration of alcohol for 3 minutes under different temperature environments:

[0026] Table 1

[0027]

[0028] Example 7

[0029] Table 2

[0030]

[0031] table 3

[0032]

[0033] Example 2

[0034] As can be seen from the above table, after konjaku is pulverized, ground and separated in an environment where the temperature is lower, the swelling degree of the fine powder particles is lower, but if the ambient temperature is lower, the required The higher the cost, therefore, under the premise of ensuring that the fine powder particles do not excessively swell or form a sol, and reduce the cost to the greatest extent, it is generally preferred to pulverize konjac at a temperature of -5°C to -6°C. Grinding and separation processing.

[0035] The following is a comparison test table of the swelling degree of konjac powder particles (the ratio of the mass after swelling to the mass before swelling) after mixing konjac fine powder prepared by wet method with alcohol of different concentrations for 5 minutes under the same temperature environment:

[0036] Table 4

[0037]

[0038] Example 7

[0039] table 5

[0040]

[0041] Table 6

[0042]

[0043] Example 4

[0044] Table 7

[0045]

[0046] It can be seen from the above table that in the same temperature environment, the higher the alcohol concentration used in the process of crushing, grinding and separating konjac, the lower the swelling degree of fine powder particles, but the cost of high-concentration alcohol Therefore, under the premise of ensuring that the fine powder particles do not excessively swell or form a sol, the cost is minimized. Generally, the alcohol concentration used is preferably 5% to 10%, and more preferably 10%.

[0047] In order to further improve the solvent-inhibiting effect of alcohol, when konjac is mixed with alcohol, a certain amount of sodium hydroxide is added at the same time. The amount of sodium hydroxide added is subject to the following conditions, that is, the concentration of sodium hydroxide in the mixed solution is less than Or be equal to 1%, can more effectively avoid fine powder particle excessive swelling or form sol, as preferably, the amount of sodium hydroxide added is preferably to make the sodium hydroxide concentration in the solution after mixing reach 0.5% and be the best.

[0048] In addition, in the step C, before crushing, grinding and separating the konjac, the konjac can be pre-cooled, which can further prevent excessive swelling or sol formation of the fine powder particles, and improve the solvent-inhibiting effect of alcohol.

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Low-alcohol concentration wet processing method for refined konjak powder

A technology of konjac powder and alcohol concentration, which is applied in the field of food processing, can solve the problems of high price, loss of glucomannan, high processing cost of wet processing konjac powder, etc., and achieve the effect of reducing processing cost

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

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Example Embodiment

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Description & Claims & Application Information

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