32results about How to "Special water retention" patented technology

The invention provides a preparation method of vitamin C-loaded silk fibroin / hyaluronic acid composite nanofibers. The preparation method comprises following steps: silk fibroin is dissolved in deionized water, and is stirred at room temperature until silk fibroin is dissolved completely so as to obtain a silk fibroin solution with a mass concentration of 30 to 35%; hyaluronic acid is dissolved in deionized water, and is stirred at room temperature until hyaluronic acid is dissolved completely so as to obtain a hyaluronic acid solution with a mass concentration of 2 to 4%; the silk fibroin solution and the hyaluronic acid solution are mixed so as to obtain a silk fibroin / hyaluronic acid mixed solution; sodium L-ascorbyl-2-phosphate is dissolved in the silk fibroin / hyaluronic acid mixed solution, and the mixture is stirred uniformly so as to obtain a mixed electrospinning solution; and the mixed electrospinning solution is subjected to electrospinning so as to obtain the vitamin C-loaded silk fibroin / hyaluronic acid composite nanofibers. The vitamin C-loaded silk fibroin / hyaluronic acid composite nanofibers are capable of simulating the components of extracellular matrix in composition, and the preparation method is capable of endowing the vitamin C-loaded silk fibroin / hyaluronic acid composite nanofibers with excellent physiological properties.

The invention provides a preparation method of hyaluronic acid blended nanofiber immobilized enzyme. Compared with the prior art, the method has the advantages that a hyaluronic acid-modified nanofiber with good biocompatibility and special water-retaining property is utilized by adopting an electrospinning technique; the functional nanofiber is applied to enzyme immobilization, so that the operation is relatively simple and convenient; and the blended PMA-AA@ hyaluronic acid nanofiber is steady in shape, high in porosity and large in specific surface area, and contains a lot of carboxyl. The preparation method can be applied to the field of enzyme immobilization, the supported quantity and the activity of the enzyme are significantly improved, and the method has significant functionality.

The invention discloses high-purity hyaluronic acid luster-effect skin-renewing essence. The high-purity hyaluronic acid luster-effect and skin-renewing essence is prepared from the following raw materials in parts by weight: 0.1 to 1 part of carbomer, 1 to 10 parts of glycerol, 1 to 10 parts of propylene glycol, 1 to 10 parts of jojoba oil, 0.1 to 1 part of triethanolamine, 0.1 to 5 parts of vitamin E, 0.05 to 1 part of sodium hyaluronate, 0.1 to 1 part of Germaben-II, 0.1 to 3 parts of polydimethylsiloxane, 0.1 to 1 part of allantoin, 1 to 10 parts of an aloe extracting solution, 8 to 15 parts of an earthworm extracting solution, 0.05 to 0.5 part of a flavoring agent and 10 to 100 parts of pure water. The essence disclosed by the invention has remarkable moisture-keeping, nourishing and anti-oxidization effects.

The invention provides an application of an immortalized human lung microvascular endothelial cell complex cell factor in preparing a biological agent for repairing tissue skin full-thickness defects and preparing a biological agent for treating ischemic hypoxic tissue injury. The complex cell factor is a cell factor secreted by a low-oxygen cultured immortalized human lung microvascular endothelial cell, and does not contain a hereditary material (DNA or RNA). According to the application, the immortalized human lung microvascular endothelial cell complex cell factor promotes the formation of a local blood vessel by being locally applied, achieves obvious effect and plays an obvious tissue regeneration role on injury diseases, namely skin tissue defect and the like; the cell complex cell factor has multiple effective components capable of promoting angiogenesis, can promote the revascularization and can be used for repairing the injured tissues, accelerating the growth and healing of the injured tissues, regulating the immune reaction, and the like.