75results about How to "Short degumming time" patented technology

The invention discloses a silk fabric degumming method and a silk fabric degumming apparatus. The invention belongs to the technical field of silk degumming. The method is characterized in that the method comprises the steps that: water with a required volume is injected in a degumming tank according to the weight of silk fabric and a bath ratio of 1:40-50; a pH value of the water is regulated to 8.5-9.5; the water is heated to a temperature of 50-60 DEG C; 1.00-2.50g/L of alkali protease is added into the degumming tank; silk fabric is placed into the tank, and supersonic wave is started, wherein the supersonic wave frequency is 30-80KHz; the supersonic wave treatment is performed for 35-60min, and washing is carried out. According to the invention, factors influencing silk fabric degumming are analyzed, and optimal technical values of alkali protease concentration, degumming time, degumming temperature, pH value, and bath ratio are determined. Also, the degumming apparatus is improved, such that silk fabric degumming time is effectively reduced, and silk fabric degumming efficiency is greatly improved.

The invention discloses a method for degumming soybean oil by phospholipase catalysis, which belongs to the field of vegetable oil degumming and includes the steps of preheating, adjusting pH, adding enzyme prior to mixing, allowing for enzymolysis, deactivating the enzyme and separating. The method is technically characterized by including: using phospholipase C as the phospholipase for catalysis, and preheating crude soybean oil prior to acid treatment; cooling oil-water mixture subjected to acid treatment to 37-60 DEG C, adding NaOH solution to adjust pH to 3-8, adding distilled water accounting for 1%-5% of the weight of the oil, adding the phospholipase C according to an oil proportion of 100-2000U/g, and mixing well; setting the mixing speed at 100-600r/min, and allowing for enzyme reaction for 0.5-2 hours; and deactivating the enzyme at high temperature for a reaction system, and performing high-speed centrifugal separation to complete degumming. The degumming time of the method is shortened by 1-2 times as compared with that of using phospholipase A1, phosphorus content is reduced, diglyceride content of the oil is increased slightly, and economic benefit is increased for oil production industries.

The invention relates to a method for enhancing the property of a ramie fiber through oxidative degumming. The method comprises the following steps of mixing original ramie and a peroxide degumming solution according to mass ratio being 1 to 10, boiling for 40-60 minutes under the condition of 80-85 DEG C, wherein with respect to the weight percent of the original ramie, the peroxide degumming solution comprises the following components by weight percent: 1%-4% of sodium hydroxide, 3%-8% of peroxides, 0.5%-4% of quinones compounds, 1%-6% of a metal ion chelating agent, 2%-4% of a peroxide stabilizing agent, 2%-6% of a surface active agent and the balance being water; adding sodium hydroxide, boiling for 1-1.5 hours under the condition of 100 DEG C to obtain treated ramie; boiling the treated ramie and a reducing solution at 60-100 DEG C for 40-90 minutes, then applying oil, and drying. According to the method disclosed by the invention, needed degumming time is short and the efficiency is high and the bleaching and the degumming can be completed together; the prepared ramie fiber has good tensile property.

The invention provides a degumming method of flax, comprising the following steps: adjusting the PH value of water to 8.5-9.5, heating to 20-55 DEG C, adding the enzyme preparation composed of hemicellulase and alkaline pectinase with enzyme activity of 50-5000 U/ml in the water to obtain a mixed solution, adding flax in the heated mixed solution to ret and degum, and drying, cultivating and scotching the degummed flax to obtain linen fibers. The invention also provides an enzyme preparation for degumming of the flax, comprising hemicellulase and alkaline pectinase with enzyme activity of 50-5000 U/ml. According to the invention, by using the enzyme preparation for degumming, the degumming time is short, the intensity of the scotched flax is high, the yielding of linen fibers is high, the evenness is good, the operation is simple without the process of bacteria producing enzyme, and degumming waste can be reused or discharged to farmland so as to reduce the cost of industrialization of degumming.

The invention relates to an epicoccum nigrum DB3 bacterial strain as well as a preparation and an application thereof. The preparation method comprises the steps of: 1, placing rotten sea grass in an enrichment culture medium, standing and culturing at room temperature, then coating the enrichment culture medium in a separation culture medium, standing and culturing at a temperature of 30 DEG C for 1-4 days to obtain a wild type flax biological treatment bacterial strain; 2, inoculating the bacterial strain obtained from the step 1 into a flax lignin nutrition culture medium, culturing at a temperature of 28 DEG C for 72 hours; and 3, selecting the bacterial strain with the capacity of degrading the lignin from the flax lignin nutrition culture medium to obtain the epicoccum nigrum DB3 bacterial strain. The epicoccum nigrum DB3 bacterial strain can be applied to a process for preparing spinning flax, hemp, jute or red ramie fibers through peroxide degumming. The epicoccum nigrum DB3 bacterial strain has the characteristics of short growth period, low possibility of being polluted, low treatment cost, mild reaction conditions, strong pollution resistance capacity, good heat-resistant performance, no environment pollution and good quality of the treated fibers. The preparation method has a simple process and is suitable for large-scale industrial production.

The invention discloses a high-gum-content raw hemp fiber degumming method. The method comprises a mechanical decortication and chemical immersion pre-degumming step, a steam explosion degumming step, a lignin oxidation degumming step and an ethanol boiling step. In the invention, based on the prior art, an independent lignin catalytic oxidation step is adopted, and chemical formula and technological conditions of a lignin catalytic oxidizer are improved to control the degradation degree of lignin, so that the lignin is partially degraded into non-water-soluble polyphenol substances, thus skillfully solving the problem that the lignin is sufficiently degraded into water-soluble monophenol and enters production wastewater. The polyphenol substances obtained after the degradation of the lignin are extracted through the subsequent ethanol boiling step, i.e. the polyphenol substances enter an ethanol solution and are subjected to simple distillation and purification to produce useful industrial byproducts. According to the invention, the method has the characteristics of favorable degumming effect, mild process, small fiber damage and the like; and the obtained fiber has high strength, favorable whiteness and high comprehensive quality.

The invention discloses a ramie quick degumming process in the production of high-quality sesame balls. The ramie quick degumming process comprises the following steps: ramie soaking: quick degumming dier boiling agent accounting for 1.0 weight percent to 1.5 weight percent of the ramie is used to soak the ramie for 1.0h to 1.5h at 50 DEG C to 60 DEG C; boiling at normal pressure: under the condition of normal pressure, 6g/l to 10g/l of NaOH aqueous solution is used to cook for 2h to 4h at 95 DEG C to 100 DEG C; the quick degumming dier boiling agent consists of gene improving alkaline pectase, stabilizer sodium acetate and magnesium chloride, penetrative emulsifier peregal O and trimeric sodium phosphate. The process shortens the technological process, and reduces the pickling procedure, so that the cellulose acidic hydrolysis probability is reduced and the degummed ramie forceful injury is small. The obtained degummed ramie has large break length and little hard thread doubling, is tender and applicable in spinning high grade cotton yarn.

The invention discloses a co-production even-molecular-weight-distribution fibroin-polypeptide and sericin-polypeptide powder and a preparing method thereof. The method includes the working procedures of cleaning, steam swelling, high-pressure degumming, secondary enzymolysis, ultra-filtration, membrane separation, concentration, drying and the like. The method has the advantages that molecular weight distribution is even, water and energy are saved, and co-production of fibroin polypeptide and sericin polypeptide is achieved; the defects of existing technologies are well overcome. The silk polypeptide powder comprises the fibroin polypeptide and the sericin polypeptide, and has the advantages of being high in purity and bioactivity, moderate in molecular weight, white, free of peculiar smells and the like. The powder can be used for preparing biological materials, medical materials, health food and the like, and the pure natural aim, the high activity aim, the excellent functionality aim, the rich nutrient aim and the like can be achieved.

The invention relates to a pseudomonad DA10 bacterial strain and an obtaining method and application thereof. The bacterial strain has the capability of producing pectinase and hemicellulase and has the flax degumming activity. The bacterial strain and a culture system can be directly used for flax degumming, the bacterial strain has the advantages of short degumming period, low treatment cost, good fiber quality, mild degumming condition, strong anti-pollution capability, good heat resistance performance, no environment pollution and the like, the fiber dispersion rate reaches 100 percent, the degumming efficiency reaches 95 percent, and the bacterial strain can not be polluted. Compared with the prior art, the bacterial strain has the characteristic of simple process, is applied to large-scale industrial production and has potential theoretic and practical significance on the flax degumming of the pseudomonad bacterial strain under the alkaline condition.

The invention discloses a method for high-temperature and high-pressure acid degumming of tussah silk. Firstly, acid, a penetrant and water are mixed, degumming liquid is obtained, silk is soaked with the degumming liquid, and degumming is carried out under the conditions that the pressure is 1.0-3.0 MPa and the temperature is 100-140 DEG C. The tussah silk is treated through the high-temperature and high-pressure acid degumming method, the hydrolysis speed of sericin and the breaking speed of protein peptide bonds are increased, degumming time is short, the degumming rate can reach 13%, the breaking strength of the silk obtained after degumming can be kept at about 620 N, the strength losses of the silk are small, and rapid degumming of the tussah silk is achieved.

The invention relates to a penicillium purpurogenum DB1 strain and preparation and application thereof. A preparation method of the strain comprises the following steps of: (1) putting rotten seaweed into an enriched medium for stationary culture at room temperature, coating the enriched medium onto an isolation medium, and stationary culture for 1-4 days at 30 DEG C to obtain a wild flax biological treatment strain; (2) inoculating the strain obtained in the step (1) into a flax lignin enriched medium, and culturing at 28 DEG C for 72 hours; and (3) selecting a strain with lignin degrading capability from the flax lignin enriched medium to obtain the penicillium purpurogenum DB1 strain. The penicillium purpurogenum DB1 strain can be applied to preparation processes of flax, hemp, jute orred jute fiber for spinning by degumming with peroxides. The strain has the advantages of short growing period, difficultly polluted, low treatment cost, good fiber quality after treatment, mild reaction condition, high heat resistance and environmental friendliness; and the strain has a simple process and is suitable for mass industrial production.

The invention relates to a method for preparing fibrilia by using epicoccum nigrum DB3 strains. The method comprises the following steps: (1) preserving the epicoccum nigrum DB3 strains in a potato dextrose agar medium for cultivation, and adding a freezing buffer solution; (2) inoculating bacteria the amount of which equals to the pick-up amount of an inoculating ring, obtained in the step (1) into the potato dextrose agar medium, and carrying out shaking culture; (3) inoculating the culture medium obtained in the step (2) into a flax lignin fermentation medium, and carrying out shaking culture to obtain a fermentation bacteria liquid; (4) mixing sterilized fiber raw material with the fermentation bacteria liquid obtain in the step (3), carrying out table shaking and removing fermentation liquid to obtain the fibrilia; and (5) mixing the fibrilia with degumming liquid, processing and then rinsing, oiling and drying to obtain the fibrilia. The method in the invention has simple technology, short degumming time and high degumming efficiency, thus being suitable for large-scale industrial production.

The invention discloses a degumming technology for the aqueous solution of methanesulfonic acid. The technology comprises the following steps of: a, adding a certain amount of water into an acid soaking tank of a degumming machine, setting the heating temperature, and turning on a switch for heating; b, adding a certain amount of methanesulfonic acid with a prepared concentration into the acid soaking tank of the degumming machine; c, putting a silicon wafer after flushing and ultrasonic washing and a cutting substrate together into the acid soaking tank to soak for some time; and d, lifting the cutting substrate by a special tool, and taking down a few silicon wafers which do not drop. The technology adopts the aqueous solution of methanesulfonic acid in the acid soaking process, has the advantages of sufficient silicon wafer separation and low cost, can shorten the degumming time and does not produce gas with irritant odor.

The invention discloses an enzyme preparation for hemp bast degumming. Xylanase and a CaCl2 assistant are added to a fermentation broth of Dickeya chrysanthemi, and above substances are mixed to obtain the enzyme preparation, wherein the preservation number of the is Dickeya chrysanthemi is CGMCC 14600, and the Dickeya chrysanthemi is named as Dickeya chrysanthemi DC. The invention also provides atechnology for degumming hemp bast by using the enzyme preparation. The technology sequentially comprises the following steps: preparing the enzyme preparation, preprocessing a hemp raw material, carrying out circulating immersion in the enzyme, performing inactivation, and washing hemp to finally obtain pure hemp fibers. The enzyme preparation has the advantages of rough culture conditions for the Dickeya chrysanthemi DC, high growth speed and high enzyme activity, and is suitable for to degumming of bast of ramie, kenaf, hemp, flax and kendir; and a circulating enzyme immersion process is adopted to cyclically use the enzyme preparation, so the use efficiency of the enzyme preparation is improved, the process flow is shortened, the production cost is reduced, pickling, high-pressure andhigh-concentration soda boiling and acid rinsing are not needed, conditions are mild, the treatment load of inorganic and organic pollutants is 70% less than that of chemical degumming, and the processing cost is reduced by about 20%.

The invention relates to a degumming solution and belongs to a chemical treatment solution, which is used for removing a fastening glue film adhering to the surface of mechanical parts. The invention provides a degumming solution that has a short degumming duration and has no corrosion to the mechanical parts. The invention consists of halogenated hydrocarbon, acetone, paraffin, white oil, a high molecular polymer and the latent solvent for the high molecular polymer. The degumming solution is characterized in that the weight percentage for the components is as follows: halogenated hydrocarbon 30 to 50 percent, white oil 4 to 10 percent, acetone 40 to 60 percent, high molecular polymer 0.05 to 0.1 percent, paraffin 0.5 to 2 percent and the rest is the latent solvent for the high molecular polymer.

A water-based adhesive removal agent for a plastic film for package printing is prepared from components in percentage by weight as follows: 17%-40% of a main solvent, 17%-40% of a cosolvent, 0.05%-5% of a surfactant, 0.5%-5% of an antifoaming agent and 20%-60% of water. With use of a swelling action of effective ingredients in the adhesive removal agent on a composite adhesive, a composite adhesive layer on the surface of the film is swelled rapidly to fall off. Under the action of the antifoaming agent, the adhesive removal agent cannot produce a large amount of foam when reused in a cleaning machine. The adhesive removal agent has the characteristics that a preparation method is simple, the adhesive removal agent is stable and not prone to delamination or volatilization, the adhesive is removed rapidly, damage to a film substrate is not produced, heating is not needed when the adhesive removal agent is used at the room temperature, the adhesive removal agent can be reused in the cleaning machine, a large amount of foam cannot be produced and the like.