Cellulose nano whisker antibacterial and moisturizing cream type mask as well as preparation method and application thereof
A technology of nano-whiskers and cellulose, applied in skin care preparations, medical preparations containing active ingredients, pharmaceutical formulas, etc., to achieve good moisturizing and antibacterial effects
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Embodiment 1
[0039] A kind of cellulose nano whisker antibacterial and moisturizing cream type mask, its preparation process is as follows:
[0040] (1) 5 g of microcrystalline cellulose, pretreated with 1% acetic acid at 40°C for 60 min, washed with deionized water until neutral, and then treated with 10 IU of cellulase (Novozymes company model is Cellulase of D) was treated at 60°C for 12 h, then heated at 80°C for 10 min to inactivate the enzyme, and then homogenized at 20,000 psi for 20 times to obtain cellulose with a diameter of 5 nm and a length of 200 nm nano whiskers.
[0041] (2) The cellulose nanowhiskers, chitosan, other functional ingredients and deionized water were mixed according to a certain mass ratio at 40°C at 1000 r / min for 10 min, and then mixed at room temperature at 5000 r / min Emulsified for 30 minutes, and finally degassed at -0.1MPa for 24 hours and then sealed to prepare the cellulose nano whisker antibacterial and moisturizing cream mask. Among them, the mass...
Embodiment 2
[0044] A kind of cellulose nano whisker antibacterial and moisturizing cream type mask, its preparation process is as follows:
[0045] (1) 5g microcrystalline cellulose, be that 2% citric acid aqueous solution is pretreated at 70 ℃ for 10min through mass fraction, wash with deionized water to neutrality, then use the cellulase of 100IU (Novozymes company model is Cellulase of D) was treated at 30°C for 36h, then heated at 80°C for 10min to inactivate the enzyme, and then homogenized 5 times under a pressure of 30,000psi to obtain cellulose nanowhiskers with a diameter of 40nm and a length of 600nm.
[0046] (2) The cellulose nano whiskers, chitosan, other functional ingredients and deionized water were mixed according to a certain mass ratio at 500r / min at 90°C for 30min, and then 10000r / min at room temperature for After 10 minutes of emulsification, it was degassed at -0.1 MPa for 5 hours and then sealed to prepare the cellulose nano whisker antibacterial and moisturizing c...
Embodiment 3
[0049] A kind of cellulose nano whisker antibacterial and moisturizing cream type mask, its preparation process is as follows:
[0050] (1) 5g of microcrystalline cellulose, pretreated with 5% hydrochloric acid at 40° C. for 30 min, washed to neutrality with deionized water, then 50 IU of cellulase (Novozymes company model is The cellulase of D) was treated at 50°C for 2h, then heated at 80°C for 10min to inactivate the enzyme, and then homogenized 10 times under a pressure of 20,000psi to obtain cellulose nanowhiskers with a diameter of 10nm and a length of 500nm.
[0051] (2) The cellulose nano whiskers, chitosan, other functional components and deionized water were mixed according to a certain mass ratio at 60°C at 100r / min for 60min, and then emulsified at room temperature for 5min at 15000r / min. Finally, it was degassed at -0.1MPa for 1 hour and then sealed to prepare the cellulose nano whisker antibacterial and moisturizing cream mask. Among them, the mass ratio of cel...
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