High-viscosity protein casing and preparation method thereof

The invention relates to the field of protein casings, in particular to a high-viscosity protein casing and a preparation method thereof.The high-viscosity protein casing is prepared from, by weight, 40%-45% of protein mucilage, 10%-30% of wheat gluten protein, 15%-25% of auxiliary materials, 4%-5% of tea polyphenol, 2%-5% of glycerin and 0.01%-0.05% of glutaraldehyde, the preparation method comprises the following steps: (1) uniformly mixing the protein mucilage, the wheat gluten protein, the auxiliary materials, the tea polyphenol and the glycerol, and putting the mixture into a plastic extruding machine to obtain a wet tubular casing; and (2) drying the wet tubular sausage casing, spraying a glutaraldehyde solution on the surface of the wet tubular sausage casing, drying again, and curing and shaping to obtain the high-viscosity protein sausage casing. The beeswax is added into the protein casing, so that the water resistance of the film can be improved, but the mechanical property of the film is weak, the