Preparation method of nanofiber membrane and application of nanofiber membrane in cellulose casing

Abstract

The invention discloses a preparation method of a nanofiber membrane and application of the nanofiber membrane in cellulose casings, and belongs to the field of polysaccharide and derivatives thereof, the preparation method comprises the steps of alkalization and squeezing of pulp, crushing and aging, yellowing, preparation of viscose and membrane preparation. The nanofiber membrane disclosed by the invention is used as the casing, has good contractibility, can contract along with meat stuffing after being smoked, does not have wrinkles, and has the maximum shrinkage rate of 7.4-7.6%; the nanofiber membrane disclosed by the invention is used as a casing, the casing cannot burst in a frozen anhydrous state, and the longitudinal tensile strength is 6.49-6.53 kN / m and the transverse tensile strength is 5.19-5.23 kN / m in a state that the temperature is-20 DEG C and the water content is 0.5%.

Description

technical field [0001] The invention relates to a preparation method of a nanofiber film and its application in cellulose sausage casings, belonging to the field of polysaccharides and derivatives thereof. Background technique [0002] Casings are used for stuffing sausages and enemas, mainly including livestock large intestine casings, plastic casings, cellulose casings, etc. Livestock large intestine casings are natural casings with excellent properties such as elasticity and water permeability, but their shapes and specifications are not uniform , the limited quantity is not suitable for industrial production of sausage products. Plastic casings are the most types of casings on the market at present. They can isolate air and have impact resistance. They are suitable for cooking products, but they cannot be used for smoking and roasting. [0003] The fiber film is made of natural plant polysaccharides. As a cellulose casing, it has the air permeability of a natural casing....

AI Technical Summary

Problems solved by technology

[0004] CN112956518A discloses a preparation method for quick-smoking bio-based cellulose casings, which can make the prepared cellulose casings have better quick-smoking effect, However, after the sausage is smoked and roasted, the moisture in the sausage decreases, and the shrinkage of the casing is poor, and it cannot shrink with the meat filling, resulting in wrinkles and affecting the appearance, and when it is frozen, it will cause the casing to burst

(1) The shrinkage of the existing fiber membrane is poor, and it cannot shrink with the meat filling, resulting in wrinkles;

(2) The tensile strength of the existing fiber membrane is low in a low-temperature storage environment, and it is easy to cause bursting