Natural antibacterial moisturizing mask preparation method
A natural antibacterial and nanofiber membrane technology, which is applied in skin care preparations, pharmaceutical formulations, cosmetic preparations, etc., can solve the problems of tightness, reduced mask use effect, and discomfort, so as to increase the abundance, The effect of improving bioavailability
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[0028] A preparation method of a natural antibacterial water-retaining facial mask, comprising the steps of:
[0029] S1: dissolving polyglutamic acid and polylysine in a trifluoroacetic acid solution, stirring evenly to obtain a spinning solution;
[0030] S2: using the spinning solution to perform electrospinning to obtain a PGA / PL nanofiber membrane;
[0031] S3: activating the PGA / PL nanofiber membrane by plasma treatment to obtain an activated nanofiber membrane;
[0032] S4: Soak the nanofibrous membrane obtained in step S3 in octacosanol lipase solution for negative pressure flash explosion, after esterification and grafting reaction, centrifuge and freeze-dry to obtain a natural antibacterial and water-retaining mask.
[0033] Firstly, dissolving polyglutamic acid and polylysine in trifluoroacetic acid solution and stirring evenly to obtain spinning solution. The sources of polyglutamic acid and polylysine are not limited in the present invention, and commercially av...
Embodiment 1
[0039] S1. Weigh 1.5g of polyglutamic acid with an average molecular weight of 600kDa and 0.6g of polylysine with an average molecular weight of 3500Da and completely dissolve them in 100ml of 5% (v / v) trifluoroacetic acid solution, stir evenly to obtain a spinning solution;
[0040]S2. Electrospinning is carried out with the spinning liquid, the syringe used is 10ml, the needle is flat, No. 7 needle; the electrospinning conditions are: voltage 18KV, distance 9cm, injection rate 0.5ml / h, temperature 30°C Obtain PGA / PL nanofiber film;
[0041] S3, the PGA / PL nanofiber membrane is activated by plasma processor treatment, the conditions of plasma treatment are: the gas adopts oxygen, the treatment power is 280W, the pressure is 55Pa, and the treatment time is 12min;
[0042] S4, soak the nanofibrous film obtained in step S3 in the ethanol solution of octacosanol lipase containing 6g / L octacosanol, 40g / L activity is 50U / mg lipase and carry out negative pressure flash explosion, ne...
Embodiment 2
[0045] S1. Weigh 0.5g of polyglutamic acid with an average molecular weight of 200kDa and 0.4g of polylysine with an average molecular weight of 3000Da and completely dissolve them in 100ml of 5% (v / v) trifluoroacetic acid solution, stir evenly to obtain a spinning solution;
[0046] S2. Electrospinning is carried out with the spinning liquid, the syringe used is 10ml, the needle is flat, and the needle is No. 7; the electrospinning conditions are: voltage 12KV, distance 7cm, injection rate 0.3ml / h, temperature 25°C Obtain PGA / PL nanofiber film;
[0047] S3, the PGA / PL nanofiber membrane is activated by a plasma processor, and the conditions of the plasma treatment are: the gas is nitrogen, the processing power is 250W, the pressure is 50Pa, and the processing time is 10min;
[0048] S4, soak the nanofibrous film that step S3 obtains in containing 4g / L octacosanol, 20g / L activity is the octacosanol lipase ethanol solution of 30U / mg lipase and carry out negative pressure flash ...
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