8 results about "Konjac mannan" patented technology

The invention belongs to the field of flotation, and particularly relates to a composite inhibitor for copper sulphide ore, an inhibition method, a copper-molybdenum separation method and a flotation reagent thereof.The composite inhibitor for the copper sulphide ore comprises a component A, a component B, a component C and a component D according to the weight ratio of (3-7): (1-2): (1-2): (1-3); wherein the component A is a compound shown in a formula 1 (1); the component B is a compound shown in a formula 2; the component C is konjac mannan; component D is a compound represented by formula 3. The research shows that the component A and the component D are innovatively combined, and flotation of the copper sulphide ore can be accidentally inhibited with high selectivity on the basis of combination and synergy of special groups between the component A and the component D.

The present invention provides a functional paper product which has water resistance, oil resistance and can be recycled. A functional paper product (1) according to the present invention comprises a base paper (20) and a coating film (10) formed on the base paper (20), the coating film (10) having, as a main component, modified mannan in which acetyl groups in konjac mannan are free, the coating film (10) being obtained by curing a swollen modified mannan sol in a state in which the swollen modified mannan sol is immersed in gaps between cellulose fibers of the base paper (20), and the viscosity of the swollen modified mannan before curing is 3000 mPa * s or less.

The invention discloses a preparation method for improving the stability of soybean protein isolate-konjac mannan emulsion, and belongs to the technical field of application of vegetable protein structures. The method comprises the following steps: (1) fully dissolving a soybean protein isolate solution with a certain concentration, and fully hydrating; (2) adding a certain amount of konjac mannan, and reacting at high temperature; and (3) adding six different sodium salt ions into the soybean protein isolate-konjac mannan compound. And (4) respectively mixing the samples in the steps (1), (2) and (3) with sunflower seed oil, and shearing at a high speed to obtain the emulsion. Six sodium salt ions are introduced, the emulsion particle size of the soybean protein isolate-konjac mannan compound is reduced through the Hough-Merster effect, the stability of the emulsion is improved, and under the freezing condition, the emulsion also shows higher freeze injury resistance and emulsion cracking resistance. The method has a certain reference value for the food industry.

The invention belongs to the technical field of medical hydrogel, and particularly relates to a preparation method and application of antibacterial, anti-inflammatory and repair-promoting long-residence hydrogel, the method comprises the following steps: step 1, preparation of modified konjac mannan: performing oxidation reaction on konjac mannan and an oxidizing agent in the presence of a solvent to obtain modified konjac mannan; the oxidized konjac mannan is obtained; carrying out acylation reaction on the oxidized konjac mannan and an acylation reagent in the presence of a catalyst to obtain modified konjac mannan; step 2, preparing modified gelatin: reacting gelatin with a compound containing a boric acid group and an aldehyde group, and then reacting with an acylating agent containing a carbon-carbon double bond to obtain the modified gelatin; step three, preparation of long-retention hydrogel: preparing a solution A from the modified konjac mannan obtained in the step one and tannic acid; preparing an antibacterial agent, a photoinitiator and the modified gelatin obtained in the step 2 into a solution B; and mixing the solution A and the solution B, and initiating curing through light irradiation to form the long-residence hydrogel. Compared with the prior art, the hydrogel has the advantages that through the synergistic effect of aldehyde covalent bonding of the modified konjac polysaccharide and multi-element hydrogen bonds of the tannic acid, the uterine cavity adhesion force and the long-acting residence capacity are remarkably enhanced, uterine cavity contraction can be effectively resisted, the positive effect is achieved in the aspect of uterine cavity adhesion prevention, and the application prospect is wide. Particularly, the antibacterial, anti-inflammatory and repair-promoting effects are good.

This invention belongs to the field of flotation, specifically relating to a composite inhibitor for copper sulfide ore, an inhibition method, a copper-molybdenum separation method, and flotation reagents. The composite inhibitor for copper sulfide ore comprises components A, B, C, and D in a weight ratio of 3-7:1-2:1-2:1-3; component A is a compound of formula 1 (); component B is a compound of formula 2 (); component C is konjac mannan; and component D is a compound of formula 3 (). This invention demonstrates that the innovative combination of components A through D, based on the synergistic effect of the special functional groups between components A and D, can unexpectedly achieve high selectivity in inhibiting the flotation of copper sulfide ore.

The application discloses a preparation method of grape dregs degradable preservative film, which comprises the following steps: preparing a crude extraction dry material and grape dregs carbon dots by taking grape dregs waste as a raw material, preparing carboxylated cellulose nanofibers, taking the crude extraction dry material and konjac mannan as a matrix, taking the carboxylated cellulose nanofibers in-situ loaded grape dregs carbon dots or the carboxylated cellulose nanofibers in-situ loaded grape dregs carbon dots reduced silver as an additive and an active substance, and preparing the degradable preservative film; the grape dregs degradable preservative film prepared by the application has excellent mechanical properties and water vapor and oxygen barrier properties, and has good antioxidant and antibacterial properties, so that the leek can be prevented from rotting and bacteria breeding, and the shelf life of the leek is prolonged; the method has simple operation requirements and does not require special equipment, realizes high-value utilization of grape dregs waste, and the prepared grape dregs degradable preservative film has a super strong bacteriostatic effect and has a huge application market prospect in the field of fruit and vegetable preservation packaging.

An improved process to prepare a raw fish tissue analogue and an improved raw fish tissue analogue substantially free of konjac mannan gum.

The invention provides injectable konjac mannan composite hydrogel, a preparation method thereof and application of the injectable konjac mannan composite hydrogel in wound dressing. The injectable konjak mannan composite hydrogel is prepared on the basis of konjak mannan, is composed of methacrylic anhydride modified konjak mannan, methacrylic anhydride modified hyaluronic acid and inorganic biological material powder, and can be used for preparing the injectable konjak mannan composite hydrogel under the assistance of a photoinitiator. And after being irradiated by ultraviolet light, the hydrogel is converted from an injectable liquid state into a solid state. The inorganic biological material powder is at least one of hydroxyapatite, magnesium lithium silicate, calcium triphosphate, octacalcium phosphate, calcium silicate, strontium silicate, magnesium silicate, manganese silicate, strontium silicate and akermanite. The ratio of konjac mannan to hyaluronic acid in the composite hydrogel is 1: 3, the content of inorganic biological material powder is 0%-5% wt, and the injectable konjac mannan composite hydrogel has the characteristics of photocuring and injectability, has excellent biocompatibility, biological activity and antibacterial activity, and can achieve the effect of accelerating wound healing.