Edible antibacterial film and preparation method thereof
An antibacterial film and edible technology, which is applied in the field of antibacterial edible film and preparation, can solve the problems of small inhibitory effect and ineffectiveness, and achieve the effects of no toxic side effects, wide antibacterial spectrum and strong antibacterial property
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Embodiment 1
[0025] (1) Take 4g curdlan gum, dissolve in 93.6g 1% (g / ml) NaOH solution, stir and dissolve; add protamine 2.4g in curdlan gum solution, fully mix, curdlan gum The contents of protamine and protamine are respectively 4% (g / g) and 2.4% (g / g);
[0026] (2) Take by weighing 1.2g xanthan gum, dissolve in 94g 6% (g / ml) propionic acid solution, then add 1.2g lactoferrin and 3.6g tea polyphenols, mix well, xanthan gum, lactoferrin and tea polyphenol content were 1.2% (g / g), 1.2% (g / g) and 3.6% (g / g);
[0027] (3) Mix 100 g of the solution prepared in the above step (1) with 20 g of the solution prepared in the step (2), and then add CaCl 2 , so that the content is 0.5% (g / g), after mixing, the antibacterial film solution is obtained; the antibacterial film solution is spread on a plexiglass plate to form a film, the film forming temperature is 90°C and stirred, and the film forming time is 4h, and the obtained Edible antibacterial film.
Embodiment 2
[0029] (1) Take by weighing 10g curdlan gum, dissolve in 89.2g 2% (g / ml) NaOH solution, stir and dissolve; add protamine 0.8g in curdlan gum solution, fully mix, curdlan gum The contents of protamine and protamine are respectively 10% (g / g) and 0.8% (g / g);
[0030] (2) Weigh 0.8g xanthan gum, dissolve in 94.8g 6% (g / ml) propionic acid solution, then add 3.2g lactoferrin and 1.2g tea polyphenols, mix well, xanthan gum, lactoferrin The contents of polyphenols and tea polyphenols were 0.8% (g / g), 3.2% (g / g) and 1.2% (g / g);
[0031] (3) Mix 90 g of the solution prepared in the above step (1) with 30 g of the solution prepared in the step (2), and then add CaCl 2 , so that its content is 2% (g / g), after mixing evenly, an antibacterial film solution is obtained; the antibacterial film solution is spread on a plexiglass plate to form a film, the film forming temperature is 60°C, and the film forming time is 12h. Food antibacterial film.
Embodiment 3
[0033] (1) Weigh 8g curdlan gum, dissolve in 90g 1% (g / ml) NaOH solution, stir and dissolve; add protamine 2g in curdlan gum solution, mix well, curdlan gum and fish The content of protamine is respectively 8% (g / g) and 2% (g / g);
[0034] (2) Take by weighing 1.0g xanthan gum, be dissolved in 93g 3% (g / ml) propionic acid solution, then add 3g lactoferrin and 3g tea polyphenols, mix well, make xanthan gum, lactoferrin and The content of tea polyphenols is respectively 1% (g / g), 3% (g / g) and 3% (g / g);
[0035] (3) Mix 80 g of the solution prepared in the above step (1) with 20 g of the solution prepared in the step (2), and then add CaCl 2 , so that the content is 1.5% (g / g), after mixing, the antibacterial film liquid is obtained; the antibacterial film liquid is spread on a plexiglass plate to form a film, the film forming temperature is 80 ° C, and the film forming time is 8h, and the obtained Food antibacterial film.
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