55results about How to "Avoid enzymatic digestion" patented technology

The invention provides a biocompatible materal derived from keratin that is useful for many aspects of medical treatment of bone. The keratin materal is preferably S-sulfonated and enriched in intermediate filament proteins of high molecular weight. The keratin material may be porous for use as a bone replacment and augmentation product but also provided is the use of dense keratin materials in bone treatment for use as an internal fixation appliance in the treatment of bone fractures and bone regeneration, and a method for preparing the keratin material for use in the preservation, restoration and development of form and function of bone.

The invention provides a biocompatible material derived from keratin that is useful for many aspects of medical treatment of bone. The keratin material is preferably S-sulfonated and enriched in intermediate filament proteins of high molecular weight. The keratin material may be porous for use as a bone replacement and augmentation product but also provided is the use of dense keratin materials in bone treatment for use as an internal fixation appliance in the treatment of bone fractures and bone regeneration, and a method for preparing the keratin material for use in the preservation, restoration and development of form and function of bone.

The present invention provides a cationic group-containing amphiphilic block copolymer that is biocompatible and biodegradable, and when used as a drug carrier for an anionic drug, provides several advantages, such as increased blood concentration and improved stability of the drug.

The invention discloses a method for preparing cordyceps soy sauce. The method comprises the following steps of: 1) mixing a cordyceps militaris culture residue and fermented extract oil in a mass ratio of 1:(5-10), boiling at the temperature of between 90 and 100 DEG C for 1 to 2 hours, soaking for 1 to 7 days, filtering, and extracting filtrate to obtain a cordyceps soy sauce stock solution; and 2) blending the cordyceps soy sauce stock solution, and sterilizing to obtain cordyceps soy sauce. According to the method, a starter propagation process of the cordyceps culture residue is eliminated, so that the problem of difficulty in starter propagation through ventilation due to high moisture content and high viscosity of the culture residue is solved; and the enzymolysis of nutrient substances in a culture medium can be prevented, so that active ingredients in the nutrient substances are better reserved. The cordyceps soy sauce prepared by the method is rich in multiple active ingredients such as cordycepin, cordycepose, cordyceps glycosides and the like which are beneficial to human bodies, rich in soy fragrance and more suitable for meeting the demands of consumers.

The invention relates to a method for extracting krill oil from antarctic krill. The method comprises: heating the captured antarctic krill for 3-20 minutes at a temperature of 60-100 DEG C; drying the antarctic krill, wherein the drying temperature is 60-89 DEG C; crushing the dried antarctic krill into the krill powder with the particle size of 30-100 meshes; adopting an ethanol solution with the concentration more than 95% to soak the krill powder at the temperature of 4-30 DEG C, wherein a solid / liquid ratio is 1:2-1:10, and the time is 0.5-2 hours; carrying out shear extraction on the soaked suspension liquid by using a shearing emulsifying machine, and carrying out standing or stirring extraction on the resulting suspension liquid after the shear extraction; separating the extracting solution, and carrying out extracting separation on the extracting solution 2-4 times; and evaporating the resulting extracted solution at the temperature of 30-60 DEG C and under the vacuum degree of from -0.05 to -0.1 MPa to remove the organic solvent in the extracted solution to obtain the antarctic krill oil with the phospholipid content of 40-45%. According to the present invention, the operation of the method of the present invention is simple, the phospholipid content of the final product is high, and the method can be used as the most simple and feasible method for extracting the greases, and especially the phospholipid-rich greases.

The invention discloses an antibody preservation solution. The antibody preservation solution is prepared from a buffer solution, 4-6% of trehalose, 0.005-0.01% of sodium azide, 30-50% of glycerol, 0.002-0.0025% of first polypeptide and 0.002-0.0025% of second polypeptide, wherein the buffer solution is 40-100mmol / L Tris-HCl buffer solution with a pH value of 7.0-7.5; the concentrations of the trehalose, the sodium azide, the glycerol, the first polypeptide and the second polypeptide are respectively the mass ratio; the amino acid sequence of the first polypeptide is Val-Pro-Thr-Gly-Ala-Pro; the amino acid sequence of the second polypeptide is Ile-Pro-Gly-Pro-Val-Gly. The invention also discloses a preparation method of the antibody preservation solution. The antibody preservation solution provided by the invention can be stored at room temperature for a long time, and can enable an antibody to maintain higher activity.