64results about How to "Production method safety" patented technology

The invention relates to a potato starch-based edible composite food packaging film and a preparation method thereof, and belongs to the technical field of food packaging. According to the potato starch-based edible composite food packaging film, potato starch, pullulan polysaccharide and gelatin are used as main film-forming materials, and a plasticizer and a cross-linking agent are used as auxiliary materials. The preparation method comprises the following steps of: adding water into the potato starch, performing water bath, stirring and gelatinizing, adding the pullulan polysaccharide and the gelatin, adding the plasticizer and the cross-linking agent finally, and casting the prepared solution to form the film. The potato starch-based edible composite food packaging film has the advantages that the raw materials for preparing the film are edible, harmless to human bodies and environment-friendly, and the raw materials are can be degraded biologically after being discarded; defoaming is not required in the film preparation process, and the process is simple and low in production cost; and the prepared film is transparent and glossy, high in mechanical performance and obstruction performance and attractive in appearance. The prepared film can be used for the inner packaging of food, so that harm of nondegradable food packages to the human bodies and environment is avoided.

The invention relates to a method for preparing a graphene / carbon nanotube composite material by an intensive microwave process. The method is based on a microwave irradiation process, and comprises the following steps: putting graphite oxide into a microwave oven, and carrying out microwave irradiation for 2-5 minutes to obtain the reduced and stripped graphite oxide; and mixing the reduced and stripped graphite oxide with ferrocene, and carrying out secondary microwave treatment under identical conditions, thereby finally obtaining the graphene / carbon nanotube composite material. The method has the advantages of simple technique and low cost. The produced Gr / CNTs (carbon nanotubes) composite material has favorable electric conductivity and magnetism.

The invention discloses a cyanoethyl cellulose based high-dielectric flexible nano-composite film and a preparation method thereof, and aims to provide a cyanoethyl cellulose based high-dielectric flexible nano-composite film which has high dielectric constant, low dielectric loss, good mechanical properties and good thermal stability as well as a preparation method of the nano-composite film. The cyanoethyl cellulose based high-dielectric flexible nano-composite film is prepared through the steps as follows: a solution is prepared from cyanoethyl cellulose serving as a matrix as well as ceramic filler and conductive filler which serve as auxiliaries, the film is subjected to film casting and forming, and the film is prepared. The cyanoethyl cellulose based high-dielectric flexible nano-composite film and the preparation method thereof have the following benefits: raw materials have wide sources and are renewable; a product has high dielectric constant and lower dielectric loss, can be applied to the industries of electronics, motors and cables, and has certain application prospect in the fields of artificial muscles, wave-absorbing materials, drug release and the like; the product has glossy surface, certain flexibility, good mechanical properties and good thermal stability; the production method is safe, the technological process is simple, the production cost is low, and the market prospect is broad.

The invention relates to a preparation method of cyproconazole key intermediate 1-(4-chlorphenyl)-2-cyclopropyl-1-acetone, comprising the following steps of: obtaining a compound (II) by 2-(4-chlorphenyl)-3-cyclopropyl-2-crotononitrile through selectively reducing double bonds; using the oxygen to oxidize cyan group in the compound (II) to carboxyl in the present of the catalyst, obtaining 80% of crude1-(4-chlorphenyl)-2-cyclopropyl-1-acetone; and finally, obtaining more than 95% of cyproconazole key intermediate 1-(4-chlorphenyl)-2-cyclopropyl-1-acetone by high vacuum rectification. The method has the characteristics of high yield, good quality, low cost and safety in production, and can achieve industrial production completely.

The invention discloses a usage of streptomyces psammoticus and a vanillin production method. The streptomyces psammoticus is Streptomyces psammoticus OMK-4 and used for vanillin production. The streptomyces psammoticus is adopted for production of vanillin according to a fermentation method which includes steps of strain activation, seed culture, fermentation, extraction and the like. By means of the microbiological fermentation method for vanillin production, raw materials including ferulic acid and the like are adopted for generation of a target product through microbial metabolism. The vanillin production method is implemented under the conditions of low temperature and low pressure, thereby having the advantages of high safety, operational simplicity, less pollution and environment friendliness.

The invention provides a method for producing carboxypeptidase by aspergillus niger, belonging to the technical field of biological engineering. The method comprises the following steps: taking agricultural and sideline products such as the bran, the bean cake flour, the corn flour and the like as the fermentation base material, optimizing enzyme liquid extraction time by properly changing the proportion of a carbon source and a nitrogen source in a culture medium, and performing the solid fermentation by the aspergillus niger LW-1 strain. The method provides the solid fermentation medium prescription and the culture condition for the small-scale production in the laboratory; and the carboxypeptidase activity of the mature leaven material achieves 3194.4U / g-5584.2U / g. The method has the characteristics of being simple in equipment, small in investment, fast in effect, low in production cost, environment-friendly, higher in carboxypeptidase activity and the like, is good for the development and the application of the carboxypeptidase, and is higher in economic value and practical value.

The invention relates to high-flame-retardant polyester polyol compatible with cyclopentane and a preparation method of the high-flame-retardant polyester polyol, and belongs to the technical field ofpolyester polyol. The preparation method comprises the following steps: carrying out esterification reaction and transesterification reaction on a mixture of adipic acid, an aromatic dibasic acid andan aromatic dibasic acid anhydride and a mixture of a dihydric alcohol and a trihydric alcohol which are used as raw materials, adding vegetable oil to carry out polycondensation reaction, and addinga flame retardant to obtain the high-flame-retardancy polyester polyol compatible with cyclopentane. The high-flame-retardant polyester polyol compatible with cyclopentane, disclosed by the invention, not only can be mutually dissolved with cyclopentane, but also has relatively low viscosity, good flexibility and high operability; the invention also provides the preparation method which is simpleand feasible and is beneficial to industrial production.

The invention discloses a ripe tomato one-time harvesting type cultivation method. By main vein pinching for cultivating tomato multiple branches, synchronous formation of first inflorescences, flowering, fruiting and maturing of all branches are realized. Corresponding plant physiological and agricultural operation regulation measures are adopted aiming at the target, and moisture and nutrient management and light and temperature regulation are carried out in different stages to realize group high-density branching in unit area and short-period high yield on the premise of a conventional planting quantity of tomato seedlings. By adoption of the method, one-year multi-crop cultivation of tomatoes in unit area can be realized, one-time harvesting in each crop is realized, and accordingly tomato quality controllability is realized while diseases and pest damages are reduced, consumption of pesticides is avoided, and convenience in implementation of mechanical harvesting is achieved.

The invention discloses a blueberry anthocyanin edible composite film and a preparation method thereof, belonging to the technical field of food packaging. The blueberry anthocyanidin edible composite film is prepared by preparing a solution from blueberry anthocyanidin and starch serving as main film-forming materials and a binding agent and a plasticizer serving as auxiliary materials and then carrying out film casting. The preparation method comprises the following steps: firstly, adding deionized water into the starch, conducting stirring and gelatinizing in a water bath kettle, then adding the binding agent, then adding a plasticizer, adding blueberry anthocyanin powder, conducting stirring to obtain a mixed solution, and carrying out film casting on the prepared mixed solution. The raw materials of the blueberry anthocyanin edible composite film provided by the invention are edible, widely available, renewable, non-toxic and pollution-free; and the blueberry anthocyanin edible composite film is good in degradability, simple in process flow and excellent in antibacterial activity and oxidation resistance, can be used for inner packaging of food, protects the environment, and has fresh-keeping and anti-corrosion effects on the inner packaged food.

The invention discloses a compounding process for low-melting-point suspending agents, the compounding process includes the following steps of weighing certain amounts of low-melting-point crude drugs, wetting agents, dispersing agents, anti-freezing agents, preservatives, defoaming agents and water, performing uniform mixing and shearing to obtain mixed liquid, sanding the mixed liquid, obtainedin the step S2, at the temperature of less than 30 DEG C until the particle size reaches 1-5 micrometers, adding thickening agents for uniform shearing to obtain materials A for standby use, sanding another crude drugs according to the above steps into materials B, mixing the materials A with the materials B proportionally, and performing uniform stirring and mixing to obtain the low-melting-pointcomposite compound suspending agents, the compounding process based on a new concept of step-by-step addition has the advantages that the production safety is guaranteed, the production cost is reduced, the processing method is safe, the production efficiency is high, the production method is simple, and the formula is easy to screen.

The invention discloses a polypropylene foaming material. The polypropylene foaming material comprises the following components according to proportioning by weight: 60-99 parts of polypropylene resin; 0.1-10 parts of nucleating agent; 0.1-5 parts of antioxidant; 0-5 parts of colorant; 0-5 parts of lubricant; and 0-20 parts of filling material; and the melt index of the polypropylene resin is 0.1-20 g / 10 min, and the foaming process adopts supercritical fluid as the foaming agent, i.e. 0.1-20 parts of supercritical fluid (proportioning by weight). The invention also discloses a production method of the foaming material. Compared with the prior art, the invention has the advantages that the universal polypropylene can be adopted as a base material, no polymer is provided, the cross-linkingreaction does not occur, the foaming process is free from environmental pollution, and the production method is safe; the quality of the obtained foaming material is stable, the foaming percentage and the cell density are high, the distribution is uniform, and the invention is suitable for the industrial production at a large scale; and meanwhile, the overall production method is simple, the operation is easy, and the production cost is relatively lower.

The invention relates to reactive sintering carborundum ceramics, which is characterized in that the weight percentages of the components are as following: carborundum is 80 to 95 percent, powdered carbon is 5 to 20 percent, and sintering accessory ingredient is 1 to 2 percent. The preparation method is as following: the raw materials are put into de-ionized water and caking agent, water-soluble macromolecule mixture collosol and dispersant are added; mixing by ball milling is carried out for 5 to 20 hours to form water-based carborundum sizing agent; spray dry technique is adopted to carry out spraying and drying the sizing agent, thereby obtaining carborundum compound powder amyloplastid; the amyloplastid is carried out dry pressing to obtain carborundum ceramics biscuits; the biscuits are put into a vacuum response sintering furnace for siliconizing and sintering; preparing the reactive sintering silicon carbide ceramics at the temperature of 1500 to 1800 DEG C after heat preservation for 1 to 5 hours. The reactive sintering silicon carbide ceramics of the invention has the advantages of scientific and rational raw materials and mixture ratio, safe production method and low cost. The prepared carborundum ceramics can meet requirements of mechanical seal under special working conditions.

The invention relates to a production method of 3-methylthiophene and equipment thereof, and the production method comprises the following steps: sulfur is fed into a liquefier and liquefied, fed into a vaporizer II, vaporized, and fed the vaporized sulfur and vaporized isoprene into a mixer according to a ratio, a mixture is fully vaporized and mixed, the mixed gas is fed into a normal pressure tubular reactor filled with a catalyst, and synthesized to generate a 3-methylthiophene crude product; after the 3-methylthiophene crude product is discharged from the reactor, the trimethylthiophene crude product is cooled to below 80 DEG C through a cooler I, hydrogen sulfide gas is separated through a separator, and the hydrogen sulfide gas enters an alkali absorption tower to be absorbed; the trimethylthiophene from which the hydrogen sulfide gas is separated enters a rectifying tower to be refined, and after a certain reflux ratio is controlled, the tower top produced liquid is analyzed to be qualified, and is produced to enter a qualified product tank. The production method has the remarkable characteristics of simple process, safety and environmental protection.

A preparation method of vegetable enteric-coated capsule is characterized in that: the ingredients of enteric starch capsule include hydroxypropyl starch, vegetable gum, dialdehyde starch, and plasticizer; A certain amount of dialdehyde starch was added to a certain amount of purified water, stirred at 50 ° C for 15 minutes, added 2% sodium hydroxide to adjust the pH value to 8, and continued to stir at 60 ° C for 20 minutes, and then added a certain amount of hydroxypropyl The base starch was continuously stirred at 50° C. for 30 minutes; the obtained mixture was dipped in glue, dried, and threshed to obtain capsule bodies and capsule caps.

The invention discloses a transparent copolyamide and a preparation method thereof. The cheap domestic dimer acid, aromatic dibasic acid and aliphatic linear chain diamine are taken as raw materials to undergo melt polycondensation and obtain the copolyamide. The light transmittance of the copolymer is up to more than 90%, and the copolymer has high heat resistance and good forming and processingperformance. By taking the dimer acid, the aromatic dibasic acid and the aliphatic linear chain diamine as the raw materials, compared with the existing salt forming method, the method for forming salt in aqueous solution greatly reduces the production cost, simplifies the production process and shortens the operation period. The transparent copolyamide is a polymer which has high molecular weight and is prepared by taking the dibasic acid and the aliphatic linear chain diamine as the raw materials, forming salt and polymerizing in the aqueous solution, and the intrinsic viscosity of the transparent copolyamide is up to 2.1dL.g<-1>.

A method for producing a laminate made up of at least two films / foils is provided. At least one first film / foil is structured and subsequently laminated to at least one second film / foil. The at least one second film / foil is punched by at least one tool in a single working step and is laminated to the structured first film / foil simultaneously. The films / foils are conveyed, at least part of the time, to the at least one tool. A laminate produced according to such a method and a device for producing a laminate using such a method are also provided. The device is suited for conveying and laminating the at least one first and second films / foils, wherein regions of the films / foils are aligned to be parallel with respect to each other. The device includes at least one tool that can be used to punch-laminate second film / foil onto the first film / foil.

The invention relates to a reinforced polyethylene (PE) film and a preparation method thereof, belonging to the technical field of functional packaging materials. The preparation method comprises the following steps: by using modified nano kaolin as a toughener, modified organic montmorillonite as a reinforcer and organic montmorillonite and maleic anhydride grafted PE as compatibilizers, adding a certain lubricant; and by using the PE as the substrate, carrying out blow molding to form the film. The reinforced PE composite film has the advantages of high stability, high barrier property, certain flame retardancy, high stretchability, high elongation at break and favorable aging resistance, can be widely used in the fields of daily supplies, household appliances and the like, and widens the application range of the PE material.

The invention relates to a ready-to-prepare beverage production line and process. The ready-to-prepare beverage production line comprises an ejector rod cleaning machine, a bottle cap cleaning machine, a sealed cup cleaning machine, a filling machine, a bottle cap ejector rod cap screwing machine, a sealed cup storage finishing machine, a sealed cup screwing machine, a combined sealed cup washingand drying machine, a water bottle finishing machine and a water bottle washing, filling and sealing machine. A discharging port of the ejector rod cleaning machine is connected with a material storage hopper of an ejector rod storage finishing machine. A discharging port of the bottle cap cleaning machine is connected with a material storage hopper of a bottle cap storage finishing machine, and an outlet of the material storage hopper of the ejector rod storage finishing machine and an outlet of the material storage hopper of the bottle cap storage finishing machine are connected with two feeding ports of the bottle cap ejector rod cap screwing machine through a spiral oscillation finishing machine separately. A discharging port of the bottle cap ejector rod cap screwing machine is connected with a feeding port of the sealed cup screwing machine through a belt conveyor. According to the ready-to-prepare beverage production line and process, all the components are combined through thebottle cap ejector rod cap screwing machine, the sealed cup screwing machine and the water bottle washing, filling and sealing machine, a finished product of instant beverage is finally formed, full-automatic production of ready-to-prepare beverage can be achieved through the ready-to-prepare beverage production device, and defects in the prior art are overcome.

The present invention provides a method for producing a fermented feed through straw and pomace. The feed comprises the following raw materials: straw, pomace, corn, soy bean meal, bran, calcium hydrogen phosphate, rice bran, rapeseed meal, trace elements, vitamins, salt, and beneficial microbial flora according to a reasonable proportion. The raw materials are formed by steps including impurity removing, granulating, drying, crushing and stirring. The raw materials are packaged and fermented in a special plastic bag, and then the fermented feed is packaged, warehoused, and sold or standby. The breeding cost of herbivores can be reduced, the raw materials are easy to buy, and the waste materials such as the straw and the pomace can be turned into things of value and recycled. The fermented feed is green, environmentally friendly and ecological, and is the most ideal professional feed for herbivores.