High temperature high pressure sterilization process for edible mushroom cultivation medium

A high-temperature and high-pressure sterilization and culture medium technology, which is applied in horticulture, application, sterilization methods, etc., can solve the problems of excessive destruction of nutrients in the medium, difficulty in exhausting cold air, poor steam circulation, etc., to save manpower and Energy and cold air are removed quickly and the effect of less nutrient destruction

Inactive Publication Date: 2005-03-16
上海浦东天厨菇业有限公司
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  • Summary
  • Abstract
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  • Claims
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AI Technical Summary

Problems solved by technology

Due to the large number of plastic bags or bottles filled with medium in the sterilizer, the density is high, and the steam circulation is poor, it is difficult to exhaust the cold air, resulting in slow temperature rise and time-consuming sterilization. The entire sterilization time takes 5 to 6.5 hours. Incomplete air

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0011] Using a pulsating vacuum autoclave, put the plastic bottle (bag) loaded with the edible fungus cultivation medium on a trolley, then push it into the autoclave, close the door of the autoclave, and start high-temperature and high-pressure sterilization. Open the steam valve, put the steam into the sterilizer, and take 50-60 minutes at a temperature of 100°C to evacuate intermittently to reduce the pressure in the autoclave to -0.05-0.06MPa, that is, to remove the cold air, and then use time The temperature rises in about 15 minutes, the temperature in the kettle reaches 121°C, the pressure is 0.11MPa and the temperature is kept for 90 minutes, the steam is turned off, and the sterilization is completed. After the temperature in the kettle drops to 100°C and the pressure is zero, open the door of the kettle, pull out the plastic bottle (bag), and inoculate edible fungus strains after cooling.

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Abstract

The invention relates to a high temperature and high pressure sterilizing process in edible mushroom cultivation which comprises, putting the plastic bottle (or bag) containing edible mushroom cultivating culture media onto a dolly, pushing into a sterilizing still, venting vapor for sterilization, wherein the sterilizing still is a pulsated vacuum heavy pressure sterilizing still, during sterilizing, first letting in vapor into the still for warming-up, lowering the pressure in the still to -0.05-0.06 MPa, and letting in vapor continuously, raising the temperature to 121 deg C., and thermal insulation for 80-90 minutes.

Description

1. Technical field: [0001] The invention relates to a high-temperature sterilization process, in particular discloses a high-temperature and high-pressure sterilization process for an edible fungus cultivation medium, which is suitable for the field of edible fungus production. 2. Background technology: [0002] The medium for the growth of edible fungi is raw materials such as wood chips, corncobs, cottonseed hulls, rice bran, and bran. After the above-mentioned raw materials are properly proportioned and mixed, water is added to an appropriate water content, and the cultivation medium for edible fungi is made. Since the medium raw materials contain various microorganisms, it is necessary to kill all microorganisms by high temperature and high pressure before inoculating edible fungus strains. At the same time, high temperature can soften the texture of the culture material, which is beneficial for the mycelium of edible fungi to decompose the matrix and absorb nutrients. ...

Claims

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Application Information

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IPC IPC(8): A01G1/04C12M1/12
Inventor 张引芳刘遐陈建华石磊涛
Owner 上海浦东天厨菇业有限公司
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