8results about How to "Bacteriostatic" patented technology

This utility model provides a waterproof packaging box with a protective structure, including a corrugated box body and a corrugated flap integrally formed on the opening side of the box body; a first honeycomb cardboard layer is provided at the bottom of the inner cavity of the corrugated box body, a buffer limiting seat is provided above the first honeycomb cardboard layer, and a buffer pressing seat is provided above the buffer limiting seat; the buffer limiting seat includes a limiting main board formed by folding a corrugated cardboard and support side plates formed on the four sides of the limiting main board and in contact with the first honeycomb cardboard layer, and a fitting hole matching the shape of the product is opened in the middle of the limiting main board; the buffer pressing seat includes a second honeycomb cardboard layer and hollow corrugated tubes respectively pasted and fixed at the four corners of the lower surface of the second honeycomb cardboard layer. In addition to having good shock absorption and cushioning functions, it can fix the product securely and provide good cushioning protection for the product, and also has waterproof and mildew-proof functions.

The application discloses a strain of Staphylococcus carnosus and application of the strain in improving sour taste of soy sauce, and belongs to the technical field of food fermentation. The Staphylococcus carnosus CS1.21 is first isolated from soy sauce mash, and has the characteristics of salt tolerance, strong acid production, ester production and bacteriostasis. The strain is used for fermenting high-salt dilute soy sauce, and can effectively produce lactic acid, acetic acid and succinic acid, and the production of lactic acid, acetic acid and succinic acid is respectively increased by 28.13%, 27.78% and 50.00% compared to the soy sauce without adding the CS1.21. Meanwhile, the accumulation of ester substances is promoted, and the content of the ester substances is increased by 86.23% compared to the soy sauce without adding the CS1.21, wherein the content of ethyl lactate and ethyl acetate is respectively increased by 70.11% and 85.76%. The addition of the Staphylococcus carnosus CS1.21 is beneficial to improving the sour taste of the soy sauce, and can improve the quality and flavor of the soy sauce without adding preservatives.

The application provides a preparation of gramicidin and an antibacterial hydrogel preparation of the gramicidin, and discloses medical uses of the gramicidin, and provides a recombinant gramicidin, heterologous expression of the gramicidin is realized by constructing a Pichia pastoris recombinant strain, and the antibacterial activity of the gramicidin is retained, and the method has the advantages of simplicity and rapidness. Meanwhile, the hydrogel preparation of the gramicidin provided by the application shows good potential for treating wound infection of a diabetic mouse, and has the performance of rapid adhesion and hemostasis, lays a foundation for development of a new antibacterial drug, and provides a new direction for treatment of chronic inflammatory wounds and open bleeding.

This invention discloses fucoidan-phycocyanin nanoparticles loaded with astaxanthin. The nanoparticles are formed by the self-assembly of fucoidan and phycocyanin through electrostatic interactions and hydrogen bonds to form a carrier, encapsulating astaxanthin within. The nanoparticles have a particle size of 250 nm–350 nm, an absolute zeta potential ≥20 mV, a polydispersity index ≤0.30, and an astaxanthin encapsulation efficiency ≥78%. The composite preservation film uses carboxymethyl cellulose as the film-forming matrix, with the nanoparticles uniformly dispersed therein. The water contact angle is ≥90°, and the water vapor transmission rate is ≤14%. g·mm / (m²·h·kPa), ABTS free radical scavenging rate ≥80%; This invention significantly improves the water solubility and stability of astaxanthin through the ternary synergy of polysaccharide-protein-active factors, realizing the integration of multiple functions of anti-oxidation, antibacterial and physical barrier. When applied to grapes for room temperature preservation for 10 days, the weight loss rate is only 20.23%, and the hardness is maintained at 7.87N. The preservation effect is significantly better than commercially available PE film and pure carboxymethyl cellulose film. Moreover, the composite film has good biodegradability and has broad application prospects in the field of food preservation.

This invention belongs to the field of composition technology, and specifically relates to a traditional Chinese medicine composition with antibacterial, anti-inflammatory, antioxidant, and whitening effects, its preparation method, and its application. The composition of this application comprises the following raw materials in parts by weight: 1-5 parts Rhodiola rosea; 5-10 parts Glycyrrhiza uralensis; and 1-5 parts Phyllanthus emblica. The composition is obtained by pulverizing Rhodiola rosea, Glycyrrhiza uralensis, and Phyllanthus emblica into powder, adding them to an extraction solvent, and then extracting. Compared with single-purpose compositions, the composition of this application simultaneously possesses antibacterial, anti-inflammatory, antioxidant, and whitening effects, thus simultaneously satisfying the above four efficacy requirements of the product.

This invention belongs to the field of biomaterials technology, specifically an antibacterial magnesium and strontium-reinforced bioactive glass ceramic and its applications. Its composition, by weight percentage, is as follows: SiO2: 30-50; P2O5: 5-20; CaO: 10-35; Na2O: 10-20; SrO: 5-20; MgO: 2-10; ZnO: 5-15; B2O3: 0-10; K2O: 3-10; CuO: 0.05-5; F: 1.5-5; Ag: 0.05-0.9. It possesses good biocompatibility, is non-toxic and harmless to the human body, and effectively inhibits and kills bacteria. It can be used as a special additive in oral care products such as toothpaste, mouthwash, tooth powder, tooth gel, and chewing gum, promoting tooth surface mineralization and reducing dentin hypersensitivity during the teeth cleaning process.

The invention discloses an amphiphilic multistage nano SiO2-based masonry cultural relic anti-weathering reinforcing material and a preparation method thereof, and relates to the technical field of cultural relic protection materials. The method comprises the following steps: preparing multi-stage nano SiO2 particles; in a water-paraffin oil two-phase system, a paraffin template is obtained; the exposed side of the SiO2 particles in the paraffin template reacts with an amino silane coupling agent to modify amino groups, then the other side of the paraffin template is modified with alkyl alkoxy silane or organosilicon quaternary ammonium salt, and amphiphilic Janus SiO2 nanoparticles are prepared; and dispersing the prepared amphiphilic Janus SiO2 nanoparticles into an organic solvent according to the mass fraction of 1 to 5 percent, so as to obtain the amphiphilic multistage nano SiO2-based masonry cultural relic anti-weathering reinforcing material. Based on the Janus SiO2 nanoparticles with three-dimensional multi-stage morphology, the anti-weathering agent is used for anti-weathering protection of masonry cultural relics, endows the masonry cultural relics with excellent hydrophobicity, antibacterial activity and surface reinforcing effect, and has excellent durability so as to keep a long-term anti-weathering reinforcing effect.

The utility model relates to the technical field of silica gel product processing, in particular to silica gel product forming equipment with antibacterial and bacteriostatic functions, and aims to solve the problem that the antibacterial and bacteriostatic characteristics of silica gel products are difficult to increase. The silica gel product forming equipment comprises a carrying table, an antibacterial assembly is arranged above the carrying table, and a feeding assembly is arranged above the carrying table; and a material storage assembly is arranged above the material supply assembly, a film closing assembly is arranged below the carrying table, the antibacterial assembly comprises a box body installed on the upper surface of the carrying table, and a supporting plate is fixedly installed on the back face of the box body. Through cooperation of the material storage barrel, the heating plate and the injection molding machine, the injection molding machine can perform injection molding on a silica gel product after the upper mold and the lower mold are closed, a bacteriostatic agent can be stored through the box body, and meanwhile, the silica gel product can be borne through a filter screen and a frame, so that the silica gel product can be soaked in the bacteriostatic agent; therefore, the silica gel product has bacteriostatic and antibacterial effects, and the quality of the silica gel product is improved.