A preparing method of cob nanometer cellulose

The invention discloses a preparing method of cob nanometer cellulose, and belongs to the technical fields of agricultural and sideline products deep processing and comprehensive sideline product utilization. The method includes pretreatment, fat extraction, enzymolysis for starch removal, high-voltage pulse electric field processing, and freeze drying. A flow type high-voltage pulse electric field device is utilized to accelerate molecule movement, a huge impact function on a material is generated, and charge separation causes re-positioning or deformation and breakage of glucosidic bonds, thus achieving an objective of preparing the nanometer cellulose. The nanometer cellulose is extracted from cobs by the method, the raw material is low in cost, comprehensive utilization of a corn processing byproduct is solved, competitiveness of the corn deep processing industry in China is greatly improved, a corn product industrial chain is prolonged, and the modern technique level of large-scale production of deep cor