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609 results about "White rot" patented technology

Bacillus belesei BMF 03 and use and fermentation method thereof

A marine-derived Bacillus velezensis (Bacillus velezensis) BMF 03 having a deposit number of CCTCC NO: 2017374 is disclosed. BMF 03 strain and its aseptic fermentation broth have inhibitory effect onplant pathogenic fungi, including apple rot fungi, grape white rot fungi, mango anthracnose fungi and so on. The aseptic fermentation broth of BMF 03 strain can be used as an active ingredient to prepare an antibacterial drug, and the bacteria is selected from the group consisting of Keratinobacteria, Bacillus subtilis and Ralstonia solanacearum. The invention also discloses a fermentation methodof aseptic fermentation broth of BMF 03. The invention adopts a plate confrontation method and an Oxford cup method to screen a new marine bacterial strain BMF-03 with strong bacteriostatic effect andwide bacteriostatic spectrum, and adopts strain morphological observation, physiological and biochemical tests and 16S rDNA sequence analysis to determine the species relationship of excellent resistant strains. At that same time, the bacteriostatic substance produce by the strain, the sporulation fermentation medium and the shake flask fermentation conditions were also study, and the promoting effect of the strain fermentation broth and the solid fermentation product on the growth of the cucumber seedling was clarified, which laid a foundation for the application of the strain.
Owner:HUAIHAI INST OF TECH

Method for treating malachite green dye waste water

The invention discloses a method for treating malachite green dye waste water, which comprises the following steps of: preparing a bacterial cellulose membrane; modifying the bacterial cellulose membrane; immobilizing white rot fungi by using the modified bacterial cellulose membrane; adding the obtained immobilized white rot fungi modified bacterial cellulose membrane into 50 mL of the malachite green dye waste water; dissolving 20 to 40 mg of malachite green into 1 L of white rot fungi liquid restrictive culture medium; treating the waste water on a gas bath constant-temperature shaking table at a speed of 120 rpm for 5 days at 28 DEG C, and measuring the chroma of the waste water at intervals of 24 hours; 5 days later, discarding the treated waste water, and retaining the immobilized fungi; adding 50 mL of newly-prepared dye waste water with the same concentration, treating the waste water under the same condition, and measuring the chroma of the waste water at intervals of 24 hours; and taking 5 days as a cycle, and repeating the steps for 5 times, wherein the removal rate of the chroma of the waste water is always over 86 percent. In the method, the referred bacillus xylinus and the white rot fungi are purchased from the China General Microbiological Culture Collection Center.
Owner:NORTHEAST DIANLI UNIVERSITY +1

Straw feed fermented by white rot fungus and preparation method thereof

The invention relates to a straw feed fermented by white rot fungus and a preparation method thereof, and strain is the combination of white rot fungus Tf1 (pleurotus sajor-caju) and JG1 (pleurotus cornucopiae) which are screened in an oriented way, so that solid fermentation fungicide is cultured and prepared by three-stage propagation. Straw is pretreated by quicklime instead of being processed by high temperature sterilization without being washed by water or neutralized by acid. The obtained straw is accessed with white rot fungus composite fungicide to be fermented for 15-20 days, thus being taken as a first step of fermentation for degrading lignin in the straw and improving the straw digestion utilization rate of ruminant. After that, the fermented straw is accessed with yeast to be fermented for 3-4 days, thus being taken as a second step of fermentation for improving the crude protein content of the straw and further enhancing the nutritional value of the straw feed. After the two steps of fermentation, the crude fiber content of the straw is reduced by over 25%, the dry matter rumen (nylon bag technique) digestion rate is improved by over 20%, the crude protein content is increased by more than 50%, and the straw feed has no safety risk when being fed for animals. The invention has the characteristics of no energy consumption, no pollution, low cost, easy operation, high feeding value of the straw, and being suitable for local production of villages in China.
Owner:AGRO ENVIRONMENTAL PROTECTION INST OF MIN OF AGRI

Lignin degradation solution and preparation method thereof as well as method for degrading lignin by using lignin degradation solution

InactiveCN104894079AEfficient degradationImprove degradation conversion efficiencyOxidoreductasesFermentationCelluloseSodium acetate
The invention discloses a lignin degradation solution and a preparation method thereof as well as a method for degrading lignin by using the lignin degradation solution, and belongs to biochemical and bio-refinery methods to solve the problem that the efficient biodegradation of lignin is difficult to realize by adopting single ligninase of laccase at present. The lignin degradation solution is prepared by the following steps: dissolving laccase and manganese peroxidase into an acetic acid-sodium acetate buffer solution of which the pH value is 4-6 in an enzyme load ratio of (10:1)-(1:5) to ensure that the enzyme loads of the laccase and manganese peroxidase are respectively 1U/ml-50U/ml and 1U/ml-50U/ml; and then adding 1-10mM of MnSO4 and 0.1-1mM of H2O2, wherein the laccase and manganese peroxidase are obtained by fermenting white rot fungi to obtain extracellular crude enzyme liquid and then performing separation and purification respectively. According to the lignin degradation solution and the methods disclosed by the invention, the synergistic oxidative degradation of macromolecular lignin with rich structural diversity is realized, and compared with a degradation reaction system with single ligninase, the degradation rate of the macromolecules of the lignin can each 30-50%, the degradation conversion efficiency is significantly improved, and the degradation solution and the methods can be applied to the fields of bio-refinery of lignocelluloses, biological pulping or environmental treatment and the like.
Owner:HUAZHONG UNIV OF SCI & TECH

Method for making active carbon fibers of cotton stalk skins by using microwave method

The invention discloses a method for making active carbon fibers of cotton stalk skins by using the microwave method, comprising the following steps of: (1) a biological treatment: washing cotton stalk skins and removing impurities, cutting the cotton stalk skins into segments, inoculating with white rot fungi to ferment, washing and drying; (2) a chemical treatment: dipping cotton stalk skin fibers processed from the Step (1) into a KOH, NaOH or H3PO4 solution; (3) placing the cotton stalk skin fibers dipped in Step (2) into a microwave oven for carbonization and activation, taking the carbonized and activated cotton stalk skin fibers out of the microwave oven after cooling to room temperature, washing the cotton stalk skin fibers to pH 6-7, kiln drying or air drying to produce the active carbon fibers of cotton stalk skins. The method for making active carbon fibers by using cotton stalk skins as the raw material in the invention has advantages of simple preparation technology, fast preparation speed, low energy consumption, sufficient raw material and low price. The active carbon fibers prepared by using the method have a high carbon content rate, well-developed pores, strong sorption and excellent performance, can effectively remove harmful pollutants, and is good for environmental protection.
Owner:SHANDONG UNIV

Bamboo wood preservative made from natural plant source and preparation method thereof

The invention discloses a bamboo wood preservative made from a natural plant source and a preparation method of the bamboo wood preservative. The bamboo wood preservative comprises, by mass, 2.5%-10% of extract from roots of kudzu vines, 1%-5% of extract from smoke trees, 1%-5% of extract from onions, 30%- 60% of alcohol and the balance distilled water, wherein the sum of the mass percentages of the materials is 100%. The preparation method of the bamboo wood preservative comprises the steps that alcohol and distilled water are mixed according to a mass ratio into ethanol water with the mass percentage of 30%-60%, the extract from roots of kudzu vines, the extract from smoke trees and the extract from onions are added into the ethanol water according to the mass percentages, the mixture is stirred for 30 minutes to 60 minutes in a vacuum decompression sealed tank at the temperature of 50 DEG C to 60 DEG C, the mixture is cooled to the normal temperature, and then a bamboo wood preservative solution containing the extract from roots of kudzu vines, the extract from smoke trees and the extract from onions is obtained, wherein the mass percentage of the extract from roots of kudzu vines, the mass percentage of the extract from smoke trees and the mass percentage of the extract from onions are certain. The bamboo wood preservative made from the natural plant source has the antibacterial function and the insect prevention function and can well restrain bamboo wood rotting fungi, brown rot fungi (Gloeophyllum) and white rot fungi (Coriolus versicolor). The bamboo wood preservative is a totally environmentally friendly material, the preparation technology is simple, energy consumption can be reduced, and compared with a chemical preservative, the bamboo wood preservative is high in safety for the environment.
Owner:JISHOU UNIVERSITY

Method for biologic pretreatment of lignocellulose and hydrogen production through simultaneous saccharification and fermentation

The invention discloses a method for biologic pretreatment of lignocellulose and hydrogen production through simultaneous saccharification and fermentation, relates to a method for pre-treating lignocellulose and producing hydrogen through fermentation, and solves the problems of high energy requirement, environmental pollution and production of a fermentation inhibitor existing in the pretreatment of the lignocellulose during the conventional fermentative hydrogen production. The method comprises the following steps of: 1, inoculating white rot fungi in lignocellulose liquid culture medium to culture, washing and drying to obtain pretreated cellulose; and 2, mixing hydrogenogens nutritive salt solution and environmentally-friendly trichoderma rough enzyme solution, and adding into the pretreated cellulose to obtain simultaneous saccharification and fermentation hydrogen production culture medium; then introducing nitrogen; and inoculating seed liquid of hydrogenogens to perform anaerobic fermentation to produce hydrogen. By adopting the method, the energy consumption during lignocellulose hydrogen production is reduced, equipment investment is reduced, the fermentation inhibitor is not produced, damage probably caused to environment during hydrogen production is reduced to the minimum; the relative removal rate of lignin reaches 55.7 percent; and the hydrogen production capacity is 72.6ml / g.
Owner:HARBIN INST OF TECH
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