Corn stalk decomposing fungus Penicillium raceus strain in cold region and its fermentation and cultivation method and application

A technology for fermenting and culturing Penicillium reis, applied in fungi, microorganism-based methods, biochemical equipment and methods, etc., can solve the problems of inconvenient transportation, difficult collection of straws, environmental pollution, etc.

Active Publication Date: 2021-06-15
NORTHEAST AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the utilization rate of straw in China is less than 33%, mainly because straw is difficult to collect in the field, and transportation is inconvenient, and most of them are burned or discarded.
Heilongjiang Province is a major agricultural province in China. It produces a huge amount of straw every year. Due to the low ambient temperature, low return conditions and poor promotion of these straws, many straws are burned or discarded, which not only wastes valuable crop resources, but also causes huge damage to the environment. Pollution

Method used

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  • Corn stalk decomposing fungus Penicillium raceus strain in cold region and its fermentation and cultivation method and application
  • Corn stalk decomposing fungus Penicillium raceus strain in cold region and its fermentation and cultivation method and application
  • Corn stalk decomposing fungus Penicillium raceus strain in cold region and its fermentation and cultivation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1 Isolation and identification of straw-decomposing fungi in cold regions

[0041] 1. Test materials and methods

[0042] 1.1 Test material

[0043] The EM bacteria liquid used in this experiment was provided by Heilongjiang Academy of Agricultural Sciences. Corn stalks were collected from the experimental field of Northeast Agricultural University.

[0044] 1.2 Test method

[0045] 1.2.1 Decomposition of straw by EM bacteria in cold regions

[0046] In December 2016, in the experimental field of Northeast Agricultural University in Harbin, Heilongjiang Province, the outdoor temperature was between minus 12°C and 25°C. The mixture of crushed straw and EM bacteria solution was buried in a deep ditch and covered with untreated straw and plastic cloth. Decomposition 60d. The decomposed stalks taken out were in a rotten state, and occasionally strips or small pieces of incompletely decomposed straw fragments were seen.

[0047] 1.2.2 Isolation of straw-decompo...

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Abstract

The invention discloses a corn stalk decomposing fungus strain in a cold region, a fermentation culture method and application thereof. The present invention firstly discloses an isolated Penicillium raistrickii-A8 strain, and its microorganism preservation number is: CGMCC No.15099. The isolated Penicillium raistrickii-A8 bacterial strain of the present invention can grow at different temperatures, and still has vigorous growth under low temperature conditions. The invention optimizes the relevant parameters of the fermentation preparation method of the isolated fungal strains. The isolated fungal strain of the present invention can efficiently ferment straw under low temperature conditions, and can be used alone or in combination with EM bacteria to ferment straw; after mixing the fermentation liquid of the strain of the present invention with the EM bacterial liquid, ferment corn straw at low temperature, The zymolysis effect of the straw was significantly improved, and the zymolysis rate was increased by 46.2%, and the rot of the straw was better and easier to break.

Description

technical field [0001] The present invention relates to an isolated cold region corn stalk decomposing fungus strain, and also relates to the application of the cold region straw decomposing fungus Penicillium raceus strain in high-efficiency fermentation of corn stalks at low temperature, which belongs to the separation and treatment of cold region straw decomposing fungi. application field. Background technique [0002] Crop straw is rich in nutrients such as cellulose, hemicellulose, lignin, protein and mineral elements, and is a renewable biological resource. However, the utilization rate of straw in China is less than 33%, mainly because straw is difficult to collect and transport in the field, and most of them are burned or discarded. Heilongjiang Province is a major agricultural province in China. It produces a huge amount of straw every year. Due to the low ambient temperature, low return conditions and poor promotion of these straws, many straws are burned or disca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N1/14C12N9/42C12R1/80
CPCC12N1/14C12N9/2437C12Y302/01004C12N1/145C12R2001/80
Inventor 李凤兰徐媛媛徐永清冯艳忠袁强杨秀梅
Owner NORTHEAST AGRICULTURAL UNIVERSITY
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