43results about How to "Short degumming cycle" patented technology

The invention discloses a factory biologic degumming process of kenaf bast. The process comprises the following steps: firstly, rolling kenaf bast till the kenaf bast loosens without damaging kenaf fiber, and carrying out activation and augmentation treatment of Erwinia carotovora microbial agent to obtain bacterial suspension; diluting the bacterial suspension and then carrying out immersion vaccination or spraying vaccination of the kenaf bast; carrying out immersion fermentation or wet fermentation of the kenaf bast till the kenaf bast turns blue and transversely torn kenaf pieces are in a network structure; inactivating the fermented kenaf bast by hot water; and then, cleaning the kenaf bast by high-pressure water while rolling the kenaf bast till kenaf fiber is obtained. The degumming process has the advantages of short degumming cycle, low production cost, less investment, less land occupation, low labor intensity, environmental protection, no pollution, stable product quality, and the like.

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 relates to a bacillus cereus DA3 strain and a preparation method and application thereof. The strain has the capacity of producing pectinase and hemicellulase and has flax retting activity. The provided strain and a culture system can be directly used for flax retting and have the advantages that: the retting period is short, the fiber dispersion rate is 100 percent, the retting efficiency is 95 percent, and the strain is not easily polluted, and is low in treatment cost, high in fiber quality, mild in retting condition, high in pollution resistance, good in heat resistance, free of environmental pollution and the like. Compared with the prior art, the invention has the characteristics of simple technology, suitability for large-scale industrial production and the like, and has potential theoretical and practical significance for exploring flax retting of the bacillus cereus under the alkaline condition.

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 provides a preparation process for a piemarker fiber. The process utilizes low-frequency ultrasonic waves to assist microbes in degumming of the piemarker fiber. On the one hand, low-frequency ultrasonic waves can effectively improve activity of the microbes, enable the enzyme production speed of the microbes to be accelerated, effectively improve activity of enzyme under specific conditions and allow gum of piemarker to be more thoroughly decomposed; on the other hand, cavitation of the low-frequency ultrasonic waves enables non-thoroughly disengaged gum to be separated from the fiber; and finally, high-frequency ultrasonic waves are used to remove residual gum in tiny parts like micropores and slits. The process overcomes the problems of a great amount of residual gum, roughness of a fiber surface and the like of conventional degumming with a single microbe, improves the quality of the fiber and enables the fiber to meet requirements of post-processing like weaving and printing and dyeing.

The invention provides a method for producing beta-mannase by bacillus germs, and relates to a method for producing the beta-mannase by germs. The invention aims at expanding the resources of microbial strains for producing the beta-mannase, and provides a novel method for producing the beta-mannase by germs. The method comprises the following steps of: 1, inoculating the bacillus germs HDYM-27 into a konjaku flour culture medium; 2, culturing the germs under the condition of the temperature being 32 to 38 DEG C to obtain fermentation liquid, wherein the fermentation liquid contains the beta-mannase. The konjaku flour culture medium is prepared from konjaku flour, ammonium nitrate, sodium chloride and tap water. The beta-mannase activity in the fermentation liquid is 2000 to 3000 U/mL. The method has the advantages that the fermentation period is short, the cost is low, the operation is simple and convenient; ingredients of the fermentation liquid are simple, the beta-mannase can be easily purified, and the fermentation liquid has no pollution on the environment. The method is used for producing the beta-mannase.

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 an industrial raw-cannabis-sativa-stem degumming method, and belongs to the technical field of agricultural product processing. The industrial raw-cannabis-sativa-stem degumming method saves energy, is environmentally friendly and efficient and overcomes the defects of a traditional warm-water cannabis-sativa retting method and the defects of a natural fresh-stem rain and dew degumming method. The industrial raw-cannabis-sativa-stem degumming method includes the steps that raw cannabis-sativa stems are bundled, soaked with water and stacked in a room of a plastic greenhouse or directly covered with a light transmitting plastic film, and the raw cannabis-sativa stems are degummed under the conditions that natural lighting is kept, the temperature is controlled to be 15-35 DEG C, and the relative humidity is controlled to be 50%-75%. The method is not limited by sites, the technology is convenient to master, the degumming period is short, efficiency is high, production can be carried out in Heilongjiang province except for winter, and industrialization of raw stem degumming can be achieved.

The invention relates to a Candida tropicalis DK2 strain and an application thereof. The ITS sequence of the strain is shown as SEQ ID NO:1. The strain is used for preparing flax, jute, kenaf or bamboo fibers through retting, scouring the flax, jute, kenaf or bamboo yarns and degumming the original hemp of flax, jute and kenaf or bamboo fabrics. The strain disclosed by the invention is short in growth period and is difficultly polluted, the treatment cost is low, the treated fibers are high in quality, the treatment environment is mild, the heat resistance is high, and environmental pollution is avoided; and moreover, the strain can be directly applied to degumming the flax, jute, kenaf or bamboo fibers and has the advantages of short degumming period, high fiber dispersion rate and high degumming efficiency.

The invention relates to a mucor circinelloides DK1 strain and an application thereof. An ITS (internal transcribed spacer) sequence of the strain is shown by SEQ ID NO:1. The strain is applied to preparation of flax, jute, kenaf or bamboo fiber by retting, boiling-off of flax, jute, kenaf or bamboo yarns, and degumming of flax, jute, kenaf original hemp or bamboo fabrics. The strain provided by the invention is short in growth cycle, cannot be polluted easily, is low in treatment cost, good in fiber quality after treatment, mild in treatment environment, good in heat resistance and free from environmental pollution; and the strain can be directly applied to degumming of the flax, jute, kenaf and bamboo fibers, and is short in degumming cycle, high in fiber dispersion rate and high in degumming efficiency.

The invention discloses a microbial degumming process of linen fiber. The microbial degumming process comprises the steps as follows: preparing a bacterial liquid transferring selected strains in a strain culture tank to be cultured continuously for one week to obtain the bacterial solution for later use after the concentration of the bacterial solution meets the requirement; placing the linen fiber in a bleaching jar; spraying the bacterial solution to the bleaching jar in the bath ratio being 1:(7.5-8.5), controlling the pH and temperature in the jar and keeping the constant temperature for45-55 min; after heat preservation, recovering the bacterial solution in the strain culture tank; preparing an acid pickling solution in an auxiliary jar, spraying the acid pickling solution in the bleaching jar, and discharging the solution after circulation for 15-25 min; preparing an oxygen bleaching solution, increasing the temperature to 82-87 DEG C and keeping the constant temperature for 50-70 min; discharging the oxygen bleaching solution and performing washing for 3 times; placing the bleached linen fiber in a dehydrator to be dehydrated for 10-20 min; spreading the dehydrated linen fiber on a radio frequency machine for drying. Few auxiliary materials are used, the stability is good, the degumming period is short, strains can be recycled, the degumming wastewater pollution is reduced, and the cost is reduced.

The invention discloses a hemp degumming method and relates to a degumming process, in particular to a hemp degumming process. The invention aims at solving the problems that the existing hemp degumming process is long in degumming cycle, low in fiber percentage and great in energy consumption, and produced hemp fiber has low strength. The hemp degumming method comprises the following steps: 1) activating strains for hemp degumming; 2) culturing primary seeds; 3) culturing secondary seeds; 4) culturing three-stage seeds; and 5) adding the strains for degumming in a degumming pool containing hemp stems, and completing the hemp degumming when reaching the retting end point. The hemp degumming method can shorten the degumming cycle of the hemp stems, improve the fiber percentage of the hemp fiber, improve the strength of the hemp fiber, improve the quality of the hemp fiber and reduce the sewage discharge in hemp retting, and is applied to the production and processing field of the hemp fiber which is a raw material in textile industry.