The application belongs to the technical field of
food preservation materials, and particularly relates to an
aerogel type composite preservation pad and a preparation method and application thereof. The preparation method of the
aerogel type composite preservation pad comprises the following steps: S1. mixing
polyethylene glycol,
oxalic acid and
polyacrylic acid, and then stirring and treating at 70-80 DEG C to obtain a eutectic
solvent; mixing
biomass raw materials with the eutectic
solvent, and then performing extraction treatment, and then filtering to obtain
solid residues; S2. mixing the obtained
solid residues with water, and then performing high-pressure homogenization treatment to obtain a
cellulose-containing suspension; mixing the obtained
cellulose-containing suspension with a
gelatin solution and a crosslinking agent, pouring the obtained
mixed solution into a forming mold, and then performing freeze-
drying treatment, and then taking out to obtain the
aerogel type composite preservation pad. The aerogel type composite preservation pad prepared by the method has good mechanical properties, water absorption and antibacterial properties, and exhibits excellent preservation effect in fish slice preservation.