4results about How to "Formula flexible" patented technology

This invention discloses a Pickering emulsion based on silk fibroin self-assembled particles and its preparation method. The preparation method includes the following steps: adjusting the pH of the silk fibroin solution to 4.0-4.5, adding NaCl to a final concentration of 0.05-0.1 mol / L, mixing, and then heating to 40-50 °C and allowing it to stand at a constant temperature. Using the obtained silk fibroin self-assembled particle dispersion as the aqueous phase and vegetable oil as the oil phase, the mixture is mixed with excipients and homogenized by high-speed shearing to obtain a primary emulsion. This primary emulsion is then treated by high-pressure microfluidic jet to obtain the Pickering emulsion based on silk fibroin self-assembled particles. This method requires no chemical modification or exogenous reagents, is green and simple, and does not use organic solvents. It can prepare emulsions with high biosafety and high storage stability without emulsifiers, improving process safety and scalability, and broadening its application in the food, cosmetics, and biopharmaceutical fields.

The present invention relates to the technical field of lipid-lowering beverages, and particularly to a preparation method of a compound lipid-lowering mulberry leaf tea beverage and the compound lipid-lowering mulberry leaf tea beverage. The preparation method includes raw material pretreatment, primary fermentation conversion, co-inoculation of strains, compound fermentation culture, drying and aging, and preparation of the compound lipid-lowering mulberry leaf tea beverage. This process takes "the preparation of plant-derived functional beverages" as the core goal. By optimizing the pretreatment of the composite raw materials of mulberry leaves and dark tea, multi-strain co-fermentation conversion, directional blending and stability treatment of the beverage, the lipid-lowering effect is significantly verified by mouse experiments; at the same time, key problems such as the astringent taste, precipitation, and microbial safety of the beverage are solved, and a compound lipid-lowering mulberry leaf tea beverage with excellent sensory quality, convenient drinking, and safety and controllability is prepared.

This invention discloses a micro / nano optical fiber and surface coating preparation device and method based on evanescent field photocuring for surface encapsulation. The device includes standard optical fibers at both ends, a middle waist fiber, and two transition fiber sections connecting the standard and waist fibers. An ultraviolet (UV) adhesive coating is attached to the waist fiber. Low-refractive-index UV adhesive is cured in situ using an evanescent field transmitted on the outer surface of the micro / nano optical fiber, forming a surface coating that conforms to the fiber's own structure. The coating thickness is as low as the micrometer level. This effectively isolates the evanescent field and avoids surface contamination of the optical fiber, while reducing the size of the micro / nano optical fiber sensor, achieving a spatial resolution at the micrometer level, which is beneficial for miniaturization and integration. The use of low-refractive-index UV adhesive as the coating material ensures that the coating refractive index is lower than that of the optical fiber, allowing the optical signal transmission to meet the total internal reflection waveguide condition, ensuring low-loss transmission. Furthermore, the UV adhesive cures instantaneously within 0.1–1 s under UV light irradiation, supporting the formation of the surface coating during rapid movement.

The invention discloses a micro-nano optical fiber for realizing surface packaging based on evanescent field photocuring and a surface coating preparation device and method, the micro-nano optical fiber comprises standard optical fibers at two ends, a middle waist region optical fiber and two transition region optical fibers for connecting the standard optical fibers and the waist region optical fiber, and an ultraviolet glue coating is attached to the waist region optical fiber. The evanescent field transmitted on the outer surface of the micro-nano optical fiber is used for in-situ curing of low-refractive-index ultraviolet glue, a surface coating attached to the structure of the micro-nano optical fiber is formed, the thickness of the coating is as low as micron order, the evanescent field is effectively isolated, pollution to the surface of the optical fiber is avoided, meanwhile, the size of the micro-nano optical fiber sensor is reduced, the spatial resolution reaches micron order, and the micro-nano optical fiber sensor has good application prospects. Micromation and integration are facilitated; low-refractive-index ultraviolet glue is selected as a coating raw material, it is guaranteed that the refractive index of the coating is lower than that of the optical fiber, optical signal transmission meets the total reflection guided wave condition, low-loss transmission is guaranteed, the ultraviolet glue is instantly cured within 0.1-1 s under ultraviolet irradiation, and formation of a surface coating in rapid movement is supported.