69 results about "Water soluble chitin" patented technology

The invention discloses an unpolluted, green and high-efficiency composite biological soil modifier which comprises the following components: trichoderma pseudokoningii fermentation liquor, bacillus subtilis fermentation liquor, water-soluble chitin, potassium humate and decomposed organic matter. The trichoderma pseudokoningii and the bacillus subtilis are high-efficiency bacterial strains which are obtained through screening and mutating, the trichoderma pseudokoningii fermentation liquor and the bacillus subtilis fermentation liquor are obtained by a liquor submerged fermentation technology, and the unpolluted, green and high-efficiency composite biological soil modifier can be prepared in a combination way. The soil modifier has the following functions that the physicochemical property of the soil can be improved, the hardening of the soil can be broken up, the volume weight of the soil can be reduced, the air permeability of the soil can be improved, the microbiological activity of the soil can be promoted, the growth of the plant root system can be promoted, the disease resistance of the crop can be enhanced, the yield of the crop can be improved, the quality of the crop can be improved, the original ecology of the crop can be recovered and the like, and the soil modifier is the novel soil modifier which is high-efficiency, environment-friendly and convenient to use.

The present invention discloses a blend fiber of sodium alginate / water-soluble chitin and its usage and preparation. The blend fiber of sodium alginate / water-soluble chitin is made as following ways: Mix the solution of sodium alginate which quality percentage is 3 - 5% and the solution of water-soluble chitin which quality percentage is 3 - 5%. The gelatin contains 10 - 70% of the production (blend fiber), and then percolate it and deaerating it in low pressture. Prepare blend fiber of sodium alginate / water-soluble chitin in coagulation fluid by means of spinning. The stretches ratio is 10 - 30%. The blend fiber has good capability of biological activity, good capability of mechanics and water-absorptivity. There are also abundant stuff and low-lying cost. It has good prospect in the domain of medicine, weave and so on, especially for chitosan nonwoven as dressing of wound.

The invention relates to an alginate antibacterial dressing and its preparation method. The preparation method comprises the following steps of: preparing a spinning stock solution from soluble alginate, a water-soluble chitosan derivative or water-soluble chitin derivative and simultaneously adding a silver-based antibacterial agent into a coagulation bath, carrying out wet spinning to obtain a blend fiber product and further obtain the alginate antibacterial dressing, which can be used as a wound dressing, a hemostatic material and the like. The antibacterial dressing obtained in the invention has good biocompatibility, permeability and water absorption, can be used to rapidly stop bleeding, ease pain and promote wound healing, continuously acts on regenerative bacteria, and has a lasting and high-efficient sterilizing characteristic.

A novel cell culture medium suitable for primary culture of insect cells, an insect-derived water-soluble chitin, and a process of preparing an insect culture cell line in a short period of time by using the insect primary culture medium and the insect-derived water-soluble chitin. The insect cell primary culture medium comprises lactalbumin hydrolysate, yeastolate, and tryptose phosphate broth as protein extracts, and polyvinylpyrrolidone as a viscosity-supplementing agent. The insect-derived water-soluble chitin is subjected to deacetylation as the sole chemical modification.