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Preparation method of nanocellulose reinforced collagen casing

A nanocellulose and collagen technology, which is applied in the field of preparation of nanocellulose reinforced collagen casings, can solve the problems of inability to take into account production cost, simple processing and required performance, poor water resistance and gas barrier properties of casings, and the like. The effect of broadening the application, improving the mechanical properties and reducing the loss of leather

Inactive Publication Date: 2021-06-11
TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned patents and other existing technologies, production cost, easy processing and required performance cannot be taken into account. For example, the problem of easily obtaining casings with high mechanical strength to prevent cracking during cooking; Problems such as water resistance and poor gas resistance

Method used

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  • Preparation method of nanocellulose reinforced collagen casing
  • Preparation method of nanocellulose reinforced collagen casing
  • Preparation method of nanocellulose reinforced collagen casing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Preparation method of nano-cellulose reinforced collagen sausage casing:

[0051] (1) cleaning and splitting the inner layer of cowhide to obtain a second layer of skin;

[0052] (2) Soak the split skin with soda lime water, and adjust the pH to 12, and the treatment time is 2 hours. Cut 5kg of split leather into small pieces of 10cm×10cm, soak in distilled water every 2 hours until the pH is neutral, then take it out and drain to obtain neutral cowhide;

[0053] (3) Submerge the neutral cowhide piece in 0.03mol / L hydrochloric acid, and fully acid-swell it at 20°C for 24 hours; wherein, cowhide:hydrochloric acid=1:3 (W / V);

[0054] (4) Gently scrape the collagen fibers of the swollen cowhide piece with tweezers, configure it into a 0.5wt% collagen fiber suspension with distilled water, and then use hydrochloric acid to adjust the pH of the suspension to 2;

[0055] (5) Simultaneously, add the purified cotton linters to NaOH solution, basify at room temperature for 2 h...

Embodiment 2

[0060] Take 50kg of cow split hide, wash it in a pool, divide it into 10*10cm pieces, soak it with 90kg of soda lime for 1 day, and add 50kg of water after cleaning. Treat at room temperature for 6h to neutral. After cleaning, put it into hydrochloric acid with a concentration of 0.03mmol / L and carry out acidification treatment for 24 hours, and then chop it with a chopping machine.

[0061] Simultaneously, add the purified cotton linters to NaOH solution, alkalinize at room temperature for 2 hours, then add absolute ethanol and 35.5% sodium monochloroacetate, mix well, place in a water bath at 70°C for 5 hours, and wash with distilled water after the reaction. Neutral, then dispersed to a concentration of 1%, and then subjected to high-pressure homogenization, set the pressure of high-pressure homogenization to 1500 bar, and the number of homogenization times to 4 times.

[0062] Then the 1wt% CNF suspension was stirred in a magnetic stirrer, and added to the 1wt% collagen s...

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Abstract

The invention discloses a preparation method of a nanocellulose reinforced collagen casing, which comprises the following steps: (1) cleaning and splitting the inner layer of cow leather to obtain split leather; (2) carrying out alkali treatment on split leather, conducting cutting to form blocks, and conducting soaking until the pH is neutral; (3) soaking the neutral cow leather in hydrochloric acid, and conducting swelling; (4) scraping collagen fibers on the swelled cow leather, using the collagen fibers to prepare a collagen suspension, and adjusting the pH value of the collagen suspension; (5) preparing nano cellulose by using a physical method, a chemical method or a biological method; (6) adding the nanocellulose suspension into the collagen suspension to obtain a mixed solution A; (7) adding glycerol into the mixed solution A, uniformly conducting stirring to obtain mucilage, and conducting refrigerating; and (8) extruding and spraying the refrigerated mucilage out of a tube, conducting drying, carrying out immobilization treatment, conducting curing and qualitative treatment, and conducting packaging to obtain the casing. By utilizing the advantages of high length-diameter ratio, larger specific surface area and the like of the nanocellulose, the mechanical property of the casing can be improved when the nanocellulose is applied to preparation of the casing.

Description

technical field [0001] The invention relates to the technical field of food packaging, in particular to a preparation method of nano-cellulose reinforced collagen sausage casings. Background technique [0002] At present, casings play an important role in meat processing. It is the material on which enema products are formed, and can keep the products stable for a certain period of time. Natural animal casings are used to make traditional meat products. Due to the limited production of natural casings and inconsistent specifications, their development has been restricted. The artificial casing has uniform specifications and is easier to produce industrially. Therefore, more and more artificial casings have been applied to meat processing, and the production and application of collagen-based casings are particularly attractive. [0003] Collagen has good film-forming properties and can be used not only as a medical film such as artificial skin, but also as a food packaging ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A22C13/00
CPCA22C13/00A22C13/0016A22C13/0013A22C2013/002A22C2013/0096
Inventor 王稳航赵凯旋
Owner TIANJIN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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