The barley straw has a high content of crude fiber. If the natural cellulose can undergo proper chemical modification and fine processing, a series of cellulose derivative chemical products can be obtained, so that it can also be used in the chemical production field. An important role. The determination of the crude fiber content in the stalk feed was 31% to 45% by a fiber tester, which was higher than that in the straw in different regions of Qinghai Province. The average content of crude fiber in each region was 38.76%. To fully develop and use its barley straw resources, we firstly conduct a comprehensive understanding of the crude fiber content in the barley straw and analyze it with a fiber analyzer.
Extraction and Separation of Crude Cellulose Sampling and Degreasing—Approximately 4.000 g of a sample of barley straw was accurately weighed, and the fat was immersed in diethyl ether (about 2 to 3 hours). After suction filtration, the sample was transferred to a 500 mL Erlenmeyer flask in a reflux flask.
Boiled 200 mL 0.128 mol/L H2SO4 solution and one drop of foaming aid were added to the acid treatment-Empty flask. The reflux condenser was connected and heated to boil. The boiling time was 30 min. After heating was stopped, the solution immediately passed through the Buchner funnel. With suction filtration, the residue is washed with boiling water until it is not acidic.
The main factors affecting the determination of crude fiber content are the particle size and temperature control conditions of the stalk crushing in the process of the fiber tester. In addition, due to the different altitudes and climatic conditions of the Highland barley straws.
If we can fully understand and determine the relevant conditions of the crude fiber through the fiber measurement instrument, and adopt modern technology to effectively treat the highland straw, the cellulose, hemicellulose and lignin contained therein will be degraded and transformed. Therefore, it can increase its nutritional value, improve palatability, and then it can become a potential feed resource for better utilization of livestock and poultry. This has the potential to rationally and effectively utilize the abundant barley straw resources and greatly increase the utilization efficiency of straw. Very important meaning.
Extraction and Separation of Crude Cellulose Sampling and Degreasing—Approximately 4.000 g of a sample of barley straw was accurately weighed, and the fat was immersed in diethyl ether (about 2 to 3 hours). After suction filtration, the sample was transferred to a 500 mL Erlenmeyer flask in a reflux flask.
Boiled 200 mL 0.128 mol/L H2SO4 solution and one drop of foaming aid were added to the acid treatment-Empty flask. The reflux condenser was connected and heated to boil. The boiling time was 30 min. After heating was stopped, the solution immediately passed through the Buchner funnel. With suction filtration, the residue is washed with boiling water until it is not acidic.
The main factors affecting the determination of crude fiber content are the particle size and temperature control conditions of the stalk crushing in the process of the fiber tester. In addition, due to the different altitudes and climatic conditions of the Highland barley straws.
If we can fully understand and determine the relevant conditions of the crude fiber through the fiber measurement instrument, and adopt modern technology to effectively treat the highland straw, the cellulose, hemicellulose and lignin contained therein will be degraded and transformed. Therefore, it can increase its nutritional value, improve palatability, and then it can become a potential feed resource for better utilization of livestock and poultry. This has the potential to rationally and effectively utilize the abundant barley straw resources and greatly increase the utilization efficiency of straw. Very important meaning.
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