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High-pressure vapour sterilization method of mushroom stick

A technology of high-pressure steam sterilization and shiitake mushroom sticks, which is applied in botany equipment and methods, mushroom cultivation, gardening, etc., to achieve the effects of avoiding plastic bag deterioration, ensuring killing, and avoiding excessive heat reaction

Active Publication Date: 2018-11-06
SHANXI AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the current technical problems of mushroom cultivation and sterilization, the present invention provides a new high-pressure steam sterilization method for mushroom sticks

Method used

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  • High-pressure vapour sterilization method of mushroom stick
  • High-pressure vapour sterilization method of mushroom stick
  • High-pressure vapour sterilization method of mushroom stick

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Experimental program
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Embodiment Construction

[0023] The method of the invention is adopted to sterilize the mushroom sticks.

[0024] First of all, put the mushroom cultivation bags with perforated holes pasted with air-permeable film on the sterilization rack in a straight line, so as to avoid excessive air expansion of the mushroom sticks during the sterilization process and ensure that the mushroom sticks do not expand the bag. Seal the autoclave cabinet.

[0025] Secondly, let in the steam, adjust the steam volume to the maximum, so that the steam pressure in the sterilizer can rise as fast as possible, when the pressure rises to 0.9 kg / cm², turn down the intake valve, and gradually open the exhaust valve, Allow the cold air to discharge slowly, and when the pressure drops to zero (no harsh sound), fully open the intake valve, and adjust the steam volume to the maximum, and keep it for 3 to 5 minutes until dense steam is discharged from the exhaust port, then close it After that, adjust the steam volume to the maxim...

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Abstract

The invention discloses a high-pressure vapour sterilization method of a mushroom stick. The method comprises the steps that (1),the mushroom stick is punctured, a breathable film is bonded to the mushroom stick, and the breathable film is sealed after the mushroom stick is placed in a high-temperature sterilization device; (2), vapour is added, an air inlet valve is adjusted to a lower magnitudewhen the pressure is increased to 0.9 kg / cm <2>, an air discharging valve is switched on gradually, the air inlet valve is completely switched on when the pressure drops to zero, the state of the airinlet valve is maintained for 3-5 min until dense vapour is discharged out from an air discharging port, the air discharging valve is switched off, and the air discharging operation is repeated; (3),when the vapour pressure is increased to 0.8 kg / cm <2> and the temperature is increased to 108 DEG C + / - 1 DEG C, the air inlet valve is adjusted to stabilize the pressure and the temperature, and the pressure and the temperature are maintained for 4 hours; (4), the vapour pressure is adjusted from 0.8 kg / cm <2> to 0.4 kg / cm <2> within 0.8-1 hour, the temperature is 105 DEG C + / - 1 DEG C, andthe pressure and the temperature are stabilized for 5 hours; (5), the air inlet valve is switched off, the air discharging valve is switched on when the vapour pressure is naturally reduced to 0.1 kg / cm <2>, the air discharging valve is switched off when no vapour is discharged from the air discharged valve, and the sterilization is completed.

Description

technical field [0001] The invention belongs to the technical field of steam sterilization, and in particular relates to a high-pressure steam sterilization method for mushroom sticks. Background technique [0002] At present, the main sterilization methods for edible fungus production include atmospheric pressure steam sterilization and high pressure steam sterilization. Lentinus edodes is the largest edible fungus species produced and exported in my country. Because of its typical wood rot characteristics, in order to improve the quality of lentinus edodes, pure wood chips are often used as cultivation substrates in actual production. Due to the traditional high-pressure sterilization method used in the production and sterilization of shiitake mushrooms, there are problems such as insufficient softening and curing of wood chips, slow colonization and feeding of bacteria, and easy expansion and deformation of cultivation bags, which lead to difficulties in matrix decomposit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G18/30
CPCA01G18/30
Inventor 刘靖宇常明昌孟俊龙马亮江利斌冯翠萍
Owner SHANXI AGRI UNIV
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