33results about How to "Thermoreversible" patented technology

The invention discloses a cereal protein-based carotenoid emulsion gel and a preparation method thereof and application. The preparation method comprises the steps of dissolving cereal protein and insoluble carotenoid in heated glycerin, causing the heating temperature to be 40-180 DEG C, and forming a clear transparent mixed dispersion liquid with stirring; preheating edible oil at 40-120 DEG C; adding the preheated edible oil dropwise into the glycerin mixed liquid of the cereal protein and carotenoid, performing shearing and homogenization, and obtaining the cereal protein-based carotenoid emulsion gel. The cereal protein-based carotenoid emulsion gel not only is simple in process, needs no complex device and is low in cost and controllable in process, but also is safe and environmentally friendly; the product is luminous yellow, and the flavor is good. The cereal protein-based carotenoid emulsion gel can be used for various foods, the sensory value, edible value and nutritional value are enhanced, and the cereal protein-based carotenoid emulsion gel can particularly serve as smearing oil and shortening to be applied to baked foods such as breads, cakes and biscuits and become a novel healthy food ingredient.

The invention discloses an acid vagina lubricant and a preparation method and use thereof. Based on the total weight of the lubricant, the acid vagina lubricant comprises the following components in percentage by weight: (a) 15 to 30 percent of substrate excipient, (b) 5 to 15 percent of viscous agent, (c) 20 to 40 percent of wetting agent and (d) 1 to 7 percent of acid buffer, wherein the substrate excipient is selected from polyoxyethylene polyoxypropylene polymer, carbomer, alginic acid or chitosan; the viscous agent is selected from xanthan gum, hydroxy propyl cellulose (HPC), hydroxypropyl methyl cellulose (HPMC) and sodium carboxymethylcellulose (CMC-Na); the wetting agent is selected from asparagus, glycerin, polysorbate, polyethylene glycol, propylene glycol or triacetin; and the acid buffer is selected from an acetic acid buffer pair, a boric acid buffer pair, a carbonic acid buffer pair, a phosphoric acid buffer pair or a citric acid buffer pair; and the acid vagina lubricant has the properties that: pH is between 3.0 and 4.5; and the lubricant is in liquid state at the temperature of less than or equal to 25 DEG C and in gel state at the temperature of more than or equal to 30 DEG C.

The invention provides a liquid milk product containing gellan gum and a production method thereof. The liquid milk product contains milk and gellan gum particles (0.1-5 wt% of the total weight of the liquid milk product) for chewy mouthfeel. The production method comprises dissolving gellan gum in water to obtain gellan gum waster solution, adding into milk under stirring, and allowing coagulation of gellan gum in milk to form granules. The inventive liquid milk product enriches the varieties of liquid milk products, and achieves good stability within shelf life through reasonable formulation and proper process.

The invention discloses N-amino alkyl substituted glucosamide as well as a preparation method and an application thereof. The N-amino alkyl substituted glucosamide is shown in formula (I), wherein n=2, 4, 6, 8 or 12. Supra-molecular gel formed by the N-amino alkyl substituted glucosamide in a solvent has thermal reversibility and thixotropy. Two-component gel formed by the N-amino alkyl substituted glucosamide in a solvent also has thermal reversibility and thixotropy. The instantaneous response rate after thixotropy is high, full response can be realized, and the thixotropy process is reversible and can be repeated. Gel with thixotropy is expected to be used in fields of coating, paint, pigment and the like.

The invention discloses antibacterial gel and a preparation method thereof, and belongs to the field of gel preparation. The antibacterial gel comprises deacylation gellan gum, nisin, 2-(N-morpholine) ethanesulfonic acid, 1-(3-dimethylamino propyl)-3-ethyl carbodi-imide hydrochloride, N-hydroxy succinimide thiosulfate and deionized water. The preparation method includes the steps: resin pretreatment; solution preparation; activation; acylation; dialysis; gel forming. The deacylation gellan gum is covalently grafted to the nisin to form the antibacterial gel, so that the antibacterial gel has the advantages the antibacterial gel is high in grafting ratio, low in cost, easy to form, easily formed, thermally reversible, free from toxicity and the like, and the antibacterial gel is suitable for preparation of antibacterial washing gel.

The invention provides a lubricant composition in a semisolid state at constant temperature displaying highly dynamic friction coefficient beneficial to transmission and coating little oil solution on a lubricate slippery section with high lubricity in a thin film state and a lubrication system using the same. The lubricant composition comprises hydrocarbon-based oil of 10 mass% to 98.9 mass% with %Cp less than 70, at least one of organic phosphate and polysiloxane, alkaline-earth metal salts of 1 mass% to 20 mass% and amide compound of 0.1 mass% to 89 mass% as well as lubricant composition in semisolid state at constant temperature. The lubricant composition is used for the lubrication system for transmission of key mechanisms.

The invention belongs to the technical field of supramolecular chemistry, and specifically relates to a preparation method and an application for an amphiphilic naphthoyl diimide gelator. The amphiphilic naphthoyl diimide gelator provided by the invention has a molecular formula of C89H138N4O21, and can enable benzene, toluene, xylene, dimethyl sulfoxide (DMSO) or a tetrahydrofuran solution with awater content of 30% (H2O-THF with a concentration of 30%) to generate gelation at a low concentration (3.3 mg.mL<-1> to 9.5 mg.mL<-1> through a heating-cooling method. Meanwhile, the molecular gel formed by gelation can realize reversible conversion between a solution state and a gel state through the external action of heating-cooling. The gelator provided by the invention has the advantages ofsimple synthesis, easily modified structure, thermal reversibility, large polarity range of a gelated solvent, etc., and has potential application values in fields like catalysis, sensor technologies, drug delivery and chiral separation.

The invention discloses a process for extracting and purifying moringa oleifera polysaccharide. The process comprises the following steps: preparing dried moringa oleifera leaf powder, performing backflow extraction twice at 80 DEG C in the presence of petroleum ether and 80% ethanol, and filtering so as to obtain degreased filter residue of which monosaccharide and polysaccharide are removed; putting distilled water 10-15 times the filter residue, performing backflow extraction for three times at 85-90 DEG C, performing vacuum filtration on an extract, concentrating, extracting, and further concentrating; mixing a concentrated liquid with n-butyl alcohol and chloroform in a ratio of 1:1:4, oscillating for 15-20 minutes in a rotary oscillator, performing centrifugal separation to remove protein and a chloroform layer, and collecting centrifugate; and decoloring the centrifugate with activated carbon, concentrating, heating concentrated liquid to 60-75 DEG C, and rapidly cooling to 38-40 DEG C, thereby obtaining cured moringa oleifera polysaccharide. Moringa oleifera polysaccharide extracted by using the process disclosed by the invention is high in extraction rate and purity, has thermal reversibility and is good in processing and use performance.

The invention discloses a hybrid gel for a lard substitute of a shredded cake. The hybrid gel comprises the following components: a base material, a lipid substance and water, the base material is prepared from glycerin monostearate, biological wax and colloid; the lipid substance is vegetable oil, and the colloid is carrageenan, gellan gum and the like. According to the hybrid gel for the lard substitute of the shredded cake and a preparation method of the hybrid gel, the lard substitute prepared by the preparation method adopts edible colloid, the vegetable oil and other materials, and compared with a common lard substitute, oil gel and hydrogel are adopted to prepare the hybrid gel, so that the fat content and the production cost of a dough are reduced. Researches show that the hybrid gel is of an oil-in-water structure, and the structure can slow down oxidation of the vegetable oil. Under the synergistic effect of the oil gel and the hydrogel in the hybrid gel, the hardness and viscosity of the hybrid gel are higher than those of lard oil, and the prepared shredded pancake dough has better chewiness and elasticity. The physical property of the hybrid gel is similar to that of the lard oil, so that the use process of the hybrid gel is consistent with that of the lard oil, and the shredded cake made by replacing the lard oil has a better taste.

The invention discloses a method of freezing Schwann cells by a compound low-temperature cryopreserving system. The method comprises the following steps of: heating amino acid gel factors and dissolving the same in a cell culture medium, filtering and degerming the cell culture medium, and preparing a cell suspension liquid with the cell culture medium containing the gel factors; dropwise adding a cell culture medium containing a compound freezing protecting agent into the cell suspension liquid at 0-4 DEG C and uniformly mixing the mixture, wherein the compound freezing protecting agent is prepared by mixing a permeable freezing protecting agent and a non-permeable freezing protecting agent; and putting a cryopreserving tube in a programmed cryopreserving box to be frozen for 24h at 80 DEG C below and then transferring the cryopreserving tube to liquid nitrogen to be cryopreserved. The supermolecular gel formed by self-assembling the amino acid gel factors has a unique three-dimensional netty structure. When the freezing protecting agent is dropwise added, cells are coated by the supermolecular gel, so that the permeating damage of the freezing protecting agent is reduced; in temperature-reducing and restoring processes, damage of ice crystals is reduced as the three-dimensional netty structure of the supermolecular gel limits growth and recrystallization of the ice crystals.

The invention discloses a fluorescent inset pasting device and relates to the field of inset pasting devices. The fluorescent inset pasting device includes an upper cover, a lower cover and multiple inset pasting plates clamped between the upper cover and the lower cover; the upper surfaces of the inset pasting plates are coated with inset pasting glue, and the inset pasting plates can be dividedinto the blue inset pasting plates and the yellow inset pasting plates; heat collecting plates are embedded in both the blue inset pasting plates and the yellow inset pasting plates, and inset inducing bags are clamped to the heat collecting plates and filled with glue mixed with inset pheromone, wherein the glue is thermal-sensing response gel which stays in a gel state at 40-70 DEG C and stays in a sol state at 10-30 DEG C; the surfaces of the blue inset pasting plates are coated with inset pasting glue mixed with a blue material with steady persistence, and the surfaces of the yellow insetpasting plates are coated with inset pasting glue mixed with a yellow material with steady persistence. The fluorescent inset pasting device can emit a specific light source to entice insets, the efficiency of pasting the insets can be improved under cooperation with the insect pheromone, and through combination of the inset pheromone and the thermal-sensing gel, waste of the inset pheromone can be avoided.

The invention relates to a pomegranate-shaped spring roll and a manufacturing method thereof. The pomegranate-shaped spring roll comprises a spring roll wrapper, a spring roll stuffing and sprouts, wherein the spring roll stuffing consists of three layers which are sequentially a quicksand sandwich, a glutinous rice flour paste layer and a linseed layer from the inside out; the quicksand sandwich comprises cooked salted duck egg yellow, gelatin, butter, sand sugar, custard flour, milk powder and water; the glutinous rice flour paste layer comprises flour starch, white granulated sugar, water and glutinous rice flour. The preparation method of the pomegranate-shaped spring roll comprises the four steps of preparing spring roll wrappers, making glutinous rice flour pastes, preparing the quicksand sandwich and shaping. The invention has the following benefits: the cooked salted duck egg yellow has the effects of moistening lung, nourishing yin and supplementing blood and soothing the nerves to aid sleep; the linseed is used for preventing cardiovascular diseases; besides, the pomegranate-shaped spring roll has the effects of improving the fat content of skin, promoting the pressure resistance, lowering cholesterol and promoting brain development of children.

The invention discloses an amidation mesona chinensis benth glue and a preparation method thereof. The amidation mesona chinensis benth glue is prepared by adopting the following steps: adopting a mesona chinensis benth glue as a raw material, adopting an ammonia alcohol solution comprising ammonia water and isopropanol as an amidation reagent, carrying out an amidation reaction of the ammonia alcohol solution and a mesona chinensis benth glue aqueous solution for 95-125 min, and carrying out centrifugation on the obtained reaction solution; placing the obtained precipitate in 3-5 times by volume of a hydrochloric acid-isopropanol mixing solution, stirring for 10 min, carrying out vacuum suction filtration, washing, drying at a temperature of 105 DEG C, and grinding to obtain the amidation mesona chinensis benth glue. The preparation method comprises two steps such as solution preparation and amidation mesona chinensis benth glue preparation. According to the amidation mesona chinensis benth glue, the defect that the single mesona chinensis benth glue can not form a gel and can form a gel through interaction with starch is changed, a gelation performance of the mesona chinensis benth glue is changed, and the single mesona chinensis benth glue can form the gel.

The invention discloses a gel propellant adopted as an aerospace fuel, a preparation method and uses thereof. The preparation method comprises: adding acetal substituted glucamide to a solvent to achieve the acetal substituted glucamide content of 1-30 mg/mL, heating to a temperature of 150-180 DEG C under stirring, stopping the stirring, and cooling to a room temperature, wherein the solvent is JP-10 or RP-1. According to the present invention, the gel propellant adopted as the aerospace fuel has heat reversibility and thixotropy, has the high instantaneous recovering rate after the thixotropy, and can achieve the completely recovering state; the rheological property of the gel can be improved by adding the combustion-supporting agent nanometer powder; and the obtained gel propellant can be used as the aerospace fuel.