Method for preparing edible mushroom culture bar

A technology of edible fungi and culture medium, which is applied in the field of preparation of edible fungus culture sticks, can solve the problems of medium raw materials being inhomogeneously exposed to high-pressure steam, increasing sterilization time, and high labor intensity, so as to avoid uneven contact with high-pressure steam, Effect of shortening cooling time and saving steam volume

Inactive Publication Date: 2010-09-15
天津紫荆能源技术有限责任公司
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] 2. The medium raw materials after bagging are sterilized in a high-temperature sterilization kettle. Because the bags containing the medium raw materials are densely packed in the high-temperature sterilization kettle, the cold air in the bag or between the bags is not easy to exhaust. It will make the raw materials of the bagged culture medium come into contact with the high-pressure steam unevenly, and block the sterilization effect of the steam
It is necessary to increase the sterilization time, but the extension of the sterilization time will decompose the nutritional components of the medium raw materials
[0006] 3. Since the medium material is packed in a bag, the high-temperature sterilization kettle cannot be opened immediately after high-temperature sterilization, otherwise the bag is easy to explode, and it is necessary to spray sterilized cold water in the kettle to cool down to the specified temperature. The contact area of ​​bacteria and cold water is small, so the cooling speed is slow. In this process, heat energy cannot be collected and utilized, the consumption of sterilizing cold water is large, and the production of sterilizing cold water also requires a lot of energy. At the same time, the cooling time is longer
[0007] 4. Due to high temperature and high pressure sterilization, the material of the bag containing the medium raw materials needs to be resistant to high temperature and high pressure (such as polypropylene), which is more expensive than materials that are not resistant to high temperature and high pressure (such as polyethylene), and easy to broken
[0010] 7. If the inoculation is performed manually, the labor intensity is high and the cost is high; if the existing automatic inoculation machine is used, the operation is complicated and the equipment cost is high
[0011] Because there are above-mentioned deficiencies, the production technology of present edible fungus culture stick is not suitable for mass production, suitability for industrialized production

Method used

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  • Method for preparing edible mushroom culture bar
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method of edible mushroom culture stick is made up of following steps:

[0032] (1) Get by weight ratio: 70% of cottonseed hulls, 6% of corncobs, 2% of calcium carbonate and 22% of wheat bran, pulverized and mixed;

[0033] (2) Load into the material transport vehicle 8, enter the sterilizer 1 from the sterilizer feed door 2;

[0034] (3) Close the sterilizer, under stirring, feed steam to raise the temperature to 120-160°C, sterilize for 30 minutes, depressurize to normal pressure, and remove the material transport vehicle from the discharge door 3 of the sterilizer set in the clean area , turned over, and unloaded into a stirring tank 4 with a jacketed bottom provided with a discharge valve;

[0035] (4) exchange heat with the cooling water partition wall and cool down to room temperature in the stirring tank provided with the discharge valve at the bottom with the jacket, open the discharge valve and discharge the material into the inoculation stirri...

Embodiment 2

[0040] The preparation method of edible mushroom culture stick is made up of following steps:

[0041] (1) Get by weight ratio: 70% of corn cob, 10% of cottonseed hull, 15% of bran, 4% of corn flour, 1% of gypsum, pulverized and mixed;

[0042] (2) Load it into the material transport vehicle and enter the sterilizer from the feed door of the sterilizer;

[0043] (3) Close the sterilizer, heat up to 120-160°C under stirring, sterilize for 40 minutes, depressurize to normal pressure, remove the material transport vehicle from the discharge door of the sterilizer set in the clean area, turn it over, and unload it. Feed to the mixing tank with a jacketed bottom and a discharge valve;

[0044] (4) exchange heat with the cooling water partition wall in the stirring tank with the bottom of the jacket provided with the discharge valve to cool down to room temperature, open the discharge valve to discharge the material into the inoculation stirring tank;

[0045] (5) Add an appropria...

Embodiment 3

[0049] The preparation method of edible mushroom culture stick is made up of following steps:

[0050] (1) Get by weight ratio: 55% of cottonseed hulls, 20% of sawdust, 18.5% of wheat bran, 5% of corn flour, 0.5% of sucrose, 1% of calcium carbonate, pulverized and mixed;

[0051] (2) Load it into the material transport vehicle and enter the sterilizer from the feed door of the sterilizer;

[0052] (3) Seal the autoclave, under stirring, feed steam to heat up to 120-160°C, sterilize for 20 minutes, depressurize to normal pressure, and remove the material transport vehicle from the discharge door of the autoclave set in the clean area, Flip over and discharge to a stirring tank with a jacketed bottom and a discharge valve;

[0053] (4) exchange heat with the cooling water partition wall in the stirring tank with the bottom of the jacket provided with the discharge valve to cool down to room temperature, open the discharge valve to discharge the material into the inoculation sti...

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Abstract

The invention discloses a method for preparing an edible mushroom culture bar, which comprises the following steps: (1) crushing and uniformly stirring substrate raw materials; (2) heating, pressurizing and sterilizing the raw materials and reducing the pressure of the raw materials to a normal pressure with stirring; (3) performing surface heat exchange and reducing a temperature; (4) adding sterilized substrate components which cannot withstand high temperature and high pressure, adjusting water content and uniformly stirring the mixture; (5) inoculating liquid strains with stirring; and (6) bagging the strains to obtain the edible mushroom culture bar. As the surface heat exchange method is adopted to reduce the temperature, the method, compared with the prior art, has the advantages that: cooling water does not need sterilizing and can be recycled; heat generated by the surface heat exchange can be recycled, which saves the heat and shortens cooling time; labor required for bag-by-bag injection addition with an injector is saved; and sterilizing time is short, and labor intensity and cost are low.

Description

technical field [0001] The invention belongs to the production technology of edible fungi, in particular to a method for preparing edible fungus culture sticks. Background technique [0002] At present, in the production of edible fungi at home and abroad, the production of medium for bottled varieties generally adopts the following process route: [0003] Separately pulverize various medium raw materials—mix all kinds of pulverized medium raw materials in proportion—packing—heating and pressurizing sterilization—cooling—inoculation—finished product. This method has the following problems: [0004] 1. Heating and pressure sterilization is carried out after the medium raw materials are bagged. Some medium raw materials that are not resistant to high temperature or high pressure cannot be added before sterilization, and can only be added bag by bag with a syringe after cooling down. [0005] 2. The medium raw materials after bagging are sterilized in a high-temperature steri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/04
Inventor 马云生孙宝明杨国荣
Owner 天津紫荆能源技术有限责任公司
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