Preparation method of multifunctional edible health care film
A health care film and a multifunctional technology, applied in the field of multifunctional edible health care film and its preparation, can solve the problems of high production cost of collagen film, poor gas barrier properties and antibacterial properties, no antibacterial properties, etc. The effect of bonding, improving cross-linking strength, and increasing shelf life
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Embodiment 1
[0037]The degree of deacetylation of the chitosan powder of the present embodiment is 93%, the viscosity is 85mPa s, and the moisture content is 6%; the steps and consumption of preparing the edible film in the present embodiment are as follows:
[0038] (1) Take 4 parts of chitosan powder, dissolve in 10 times the volume of sodium acetate buffer solution to prepare the chitosan reaction solution, add 4 parts of ferulic acid powder, stir in a water bath oscillator at 45~55°C, 120rpm for 5min Finally, add 0.12 parts of laccase solution, place it in a microwave accelerated reaction device, and react for 4 hours; after the reaction is completed, centrifuge at 120rpm for 5 minutes to remove impurities, and add 1mol / L NaOH solution until the supernatant does not increase in precipitation. Centrifugally wash the precipitate with a large amount of distilled water for 10 minutes, then extract with methanol for 10 hours to remove incompletely reacted phenol, wash away the methanol with ...
Embodiment 2
[0047] The degree of deacetylation of the chitosan powder of the present embodiment is 96%, the viscosity is 90mPa s, and the moisture content is 8%; the steps and consumption of preparing the edible film in the present embodiment are as follows:
[0048] (1) Take 10 parts of the above-mentioned chitosan powder, dissolve in 10 times the volume of sodium acetate buffer solution to prepare the chitosan reaction solution, add 10 parts of ferulic acid powder, and stir in a water bath oscillator at 55 °C at 120 rpm for 5 minutes , add 0.3 parts of laccase solution, place it in a microwave accelerated reaction device, and react for 6 hours; after the reaction is completed, centrifuge at 120rpm for 5 minutes to remove impurities, and add 1mol / L NaOH solution until the supernatant does not increase in precipitation. Centrifugally wash the precipitate with a large amount of distilled water for 10-15 minutes, then extract with methanol for 12 hours to remove incompletely reacted phenol, ...
Embodiment 3
[0057] The degree of deacetylation of the chitosan powder of the present embodiment is 94%, the viscosity is 88mPa s, and the moisture content is 7%; the steps and consumption of preparing the edible film in the present embodiment are as follows:
[0058] (1) Take 7 parts of chitosan powder, dissolve in 10 times the volume of sodium acetate buffer solution to prepare chitosan reaction solution, add 7 parts of ferulic acid powder, stir in a water bath oscillator at 50°C, 120rpm for 5min, Add 0.21 parts of laccase solution, place it in a microwave accelerated reaction device, and react for 5 hours; after the reaction is completed, centrifuge at 120 rpm for 5 minutes to remove impurities, and add 1 mol / L NaOH solution until the precipitation in the supernatant does not increase. Centrifugally wash the precipitate with a large amount of distilled water for 15 minutes, then extract with methanol for 12 hours to remove incompletely reacted phenol, wash away the methanol with distille...
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Abstract
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