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128results about How to "Meet the requirements of green food" patented technology

Frozen instant noodles and processing method thereof

InactiveCN102178171AStrong fresh-keeping abilityNot subject to storage conditionsFood preparationMixed materialsInstant noodle
The invention relates to frozen instant noodles and a processing method thereof. The frozen instant noodles comprise raw materials of flour, starch, wheat gluten, albumen powder, vegetable jelly, alkali, common salt, food dye and water. During processing, the mixed materials are synchronously placed in dough kneading equipment, vacuum stirred and then are let stand; the dough is subjected to rolling and pulling type composite calendaring for multiple times, is cured and is subjected to rolling and pulling type continuous calendaring and is chopped into short noodles; and finally, the noodles are boiled, washed and sub-packaged into boxes and refrigerated at a temperature of -18DEG C.
Owner:牛选欣

Method for preparing fermentation wine by super-high pressure technology

The invention relates to a preparation method of fermenting fruit wine with no addition of sulphur dioxide; the method uses a super high pressure technology. The raw materials of fruit and vegetable are pulped, decomposed by enzyme and filtered to prepare fruit and vegetable juice; according to a conversion relationship of preparing alcohol of 1 degree with 1.7g of sugar, white sugar or honey or condensed fruit and vegetable juice of high sugar content is used for adjusting the sugar concentration of the fruit and vegetable juice; citric acid or malic acid is used for adjusting the pH value to be below 4. After being treated by super high pressure of 100MPa to 1000MPa and for 1 minute to 60 minutes, 0.2g / L to 0.5g / L of excellent dried yeast of fruit wine is added; the main fermentation is done at a temperature between 20 DEG C and 25 DEG C for about 7 days; then the secondary fermentation is done at a temperature between 10 DEG C and 20 DEG C; the alcohol content can achieve the set requirement; residual sugar is less than 1g / L; raw fruit wine can be prepared after fermentation. After being treated under the pressure of 200MPa to 500MPa and for 20 minutes to 60 minutes, the raw fruit wine can achieve the effects of sterilizing and speeding up the natural aging. Compared with the traditional process, the invention shortens the time, improves the efficiency, and reduces the production cost. The production process is simple; the production cost is low; and the produced fruit wine has high safety and nutrition for eating.
Owner:山东康来农业科技发展有限公司

Room-temperature litchi storage preservative, and preparation method and application of preservative

The invention relates to the technical field of litchi preservation, and particularly discloses a room-temperature litchi storage preservative, and a preparation method and an application of the preservative. The preservative mainly comprises carboxymethyl-chitosan, nisin, natamycin, tea polyphenol, epsilon-polylysine, citric acid and phytic acid; litchi fruit is soaked in a preservation solution, and then aired, so that the litchi fruit can be stored at a room temperature; the quality and low level browning of the litchi fruit can be kept for a long time at the room temperature. Litchi treated by the preservative has the characteristics that the preservative is good in preservation effect, safe, environment-friendly, simple to operate and convenient to use; the preservative is extensive in source, low in cost, edible, and easy to degrade; no pesticide residue risk exists; short-term preservation during room-temperature storage and room-temperature logistics can be achieved; the preservative is a novel preservation material with a great development potential.
Owner:SOUTH CHINA AGRI UNIV

Production technique of low-temperature pressed rapeseed oil

The invention discloses a production technique of low-temperature pressed rapeseed oil, wherein rapeseeds are cleaned, subjected to impurity removal, subjected to wall breaking based on freezing treatment and then fried to 60-70% rape to contribute to the oil leaching, a pressing technique is utilized in the invention, and a specially treated adsorbent is used for decoloring. A technique of heating after freezing is utilized in the invention to facilitate the cell disruption of the rapeseeds so as to improve the oil extraction rate, and the oil extraction rate is 5-6% higher than that of a traditional pressing method; and the oil is extracted by the pressing technique in the invention, so that no pollution exists, the purity of the oil product is guaranteed, and the oil is all natural and meets the demands of green food.
Owner:FEIXI RONGXIN GRAIN & OIL

Controlled atmosphere fresh-keeping method for Yaoshan snow pears

InactiveCN102626131ARealize mass production and storageEasy to monitorFruits/vegetable preservation by freezing/coolingCold airPEAR
The invention discloses a controlled atmosphere fresh-keeping method for Yaoshan snow pears. The controlled atmosphere fresh-keeping method comprises the steps of: filling Yaoshan snow pears which are harvested duly and have no damage into plastic packaging boxes; performing fumigation treatment by using 1-MCP in an enclosed environment; ventilating and performing sterilization treatment by using ozone; filling the sterilized Yaoshan snow pears into plastic boxes or paper boxes in which PE (Polyethylene) micro-pore freshness protection packages are lined; ventilating cold air for the packaged Yaoshan snow pears for pre-cooling treatment; after the pre-cooling treatment, tightly tying the openings of the freshness protection packages; and finally carrying out controlled atmosphere storage, wherein gas parameters in a controlled atmosphere store are adjusted and controlled as follows: 2-3% by volume of O2, 3-5% by volume of CO2, and 90-95% of relative humidity. In comparison with unprocessed Yaoshan snow pears, the storage time of the Yaoshan snow pears adopting the controlled atmosphere fresh-keeping method for the Yaoshan snow pears is prolonged for three months at the same low-temperature storage condition; and in comparison with normal micro-pore controlled atmosphere, the quality of the snow pears after the same storage time is obviously better than the snow pears which are stored in the micro-pore controlled atmosphere.
Owner:江华六月香果业股份有限公司 +1

Bacterium of degrading residual of organophorus pespared agent of bacterium

A bacterial strain for eliminating organophosphorous residue is Granis staining reaction negative bacteria DLL-1 identified as pseudomonas putida. Its biological feature is G- with thallus being short bar shape, tail end being oval and single end being grown thickly with flagellum. The Genbank landing number of 16S rDNA for the bacterial strian is AF 447394.
Owner:NANJING AGRICULTURAL UNIVERSITY

Cultivation and application method of poplar woods special for morchella

The invention relates to a cultivation and application method of poplar woods special for morchella, and belongs to the technical field of edible fungi planting. The cultivation and application methodincludes selecting poplar strains which sprout early in spring and defoliate late in autumn; selecting fertile sandy soil, with the pH value of 5-7.5, as soil for planting plots; planting poplars onthe planting plots according to the planting spacing of 3*4m or 4*4m, taking each 20mu as a planting area, arranging an operation road between every two adjacent planting areas, and cultivating the poplars for more than 3 years. The planting land special for the poplar woods is subjected to earth-up for morchella planting in every autumn. The cultivation and application method has the advantages that proper species, planting density, modification modes and under-forest morchella planting methods are selected based on existing poplar species; the morchella is planted every autumn after earth-up, so that yield of the morchella is increased, high product quality is achieved, and green food requirements are met.
Owner:河北禾坔农业科技有限公司

Chlorotoluron pesticide residue degradation strain agent prepared by the strain

The invention provides a pesticide-degrading bacterium for removing the residue of a herbicide of chlorotoluron; the bacterium that is used is gram staining reaction negative bacilli YBL3 which is identified to be Sphingobium sp. The bacterium is preserved in China Center for Type Culture Collection in May 23rd, 2008 and the preservation number of the bacterium is CCTCC M208076. The technique for producing the bacterium includes: slant seed-shake flask seed-seed pot-production pot-product (the packaging formulation is liquid bacterium or solid absorption bacterium). The product of the degrading bacterium can be directly applied to reduce the pesticide residue in the crops by more than 90 percent, thus solving the over standard problem of the pesticide residue in agricultural production and being capable of producing green agricultural products with no poison and social effects of pollution.
Owner:NANJING AGRICULTURAL UNIVERSITY

Chlorpyrifos pesticide degradation strain, inocula and preparation method thereof

The invention discloses a chlorpyrifos pesticide-degrading bacterium which refers to a Hu-01strain pertaining to Cladosporium sp. The preservation number of the strain is CCTCC M207111, and a Genebank accession number of the ITS sequence analysis is EF405864. Meantime, the invention discloses a method of preparation of inocula. The invention has the advantages of low production cost of inocula, convenient operation and good degradation effect. The invention is suitable for being widely used in fruit and vegetable production and export bases in China or in places possessing green food trademark, which has great significances in promoting the production of uncontaminated vegetable and green food.
Owner:SOUTH CHINA AGRI UNIV

Preparation method of probiotic feed additive

The invention discloses a preparation method of a probiotic feed additive. In the method, liquid spawns containing a variety of microbial communities, solid culture media, molasses and urea are mixed and prepared into the probiotic feed additive via solid fermentation, drying and pulverization; the probiotic feed additive prepared by the method can be added into livestock and poultry feed to promote the growth of the livestock and poultry, enhance the organism immunity of the livestock and poultry and regulate intestinal ecological balance; meat, egg and milk products have no chemical residues, which can meet the requirements of green food; the undesirable odor and ammonia odor of the manure of the livestock and poultry are reduced, flies, maggots and other pests are reduced, and the culture environment is improved.
Owner:TIANJIN SHENGJI GRP CO LTD

Strong-flavor rapeseed oil processing method

The invention discloses a strong-flavor rapeseed oil processing method, which comprises: pounding agastache rugosa, dianthus chinensis l, peppermint, melissaofficinalis l, osmanthus fragrans and camellia japonica l, adding water, decocting, and filtering to obtain an ingredient liquid; selecting high-quality rapeseed, peeling to obtain rapeseed kernel, heating for a certain time with steam, adding edible salt, uniformly mixing, adding to the ingredient liquid, soaking for a certain time, filtering, adjusting the water content of the rapeseed kernel, carrying out a microwave pretreatment, cooling, and carrying out cold pressing to obtain pressed oil and pressed cake; and carrying out degumming, alkali refining, decoloring and deodorizing on the pressed oil to obtain the strong-flavor rapeseed oil. According to the present invention, the strong-flavor rapeseed oil processing method is provided, wherein the low temperature cold pressing is used, the oil yield is high, the prepared strong-flavor rapeseed oil has advantages of rich flavor, high nutritional value, good oxidation stability and no pollution, the pure nature property of the rapeseed oil is ensured, and the requirements of green food are met.
Owner:BENGBU QIONGHUAI GRAIN & OIL

Potato whole powder fine dried noodles and processing method thereof

The invention discloses potato whole powder fine dried noodles and a processing method thereof, and belongs to the technical field of food processing. The fine dried noodles are prepared from the following raw materials in parts by weight: 65-72 parts of flour, 18-24 parts of potato whole powder, 5-10 parts of coarse cereal puffing powder, 0.5-1.2 parts of table salt, 1.5-2.2 parts of glutinous rice water concentrate, 0.2-0.6 part of dietary alkali and 2.4-3.5 parts of corn germ oil. The potato fine dried noodles disclosed by the invention are tenacious, good in toughness and difficult to break when being raw, and are soft, smooth, tenacious, fine, tender, fragrant and delicious when being cooked; the potato fine dried noodles are easy to digest, so that indigestion cannot be caused when the potato fine dried noodles are eaten by children and old people, and requirements of vast consumers are met.
Owner:甘肃薯香园农业科技有限公司

Bacterium for degrading chlorpyrifos pesticide residue and produced bacterium formulation

The invention provides a prodegradant which can dispel the organic phosphorus pesticide residue of chlorpyrifos. The used strain is Gram's stain reaction hysteroptosis Dsp-2 which is Sphingomonas sp. The main biology characteristic is G-; the thaliana is the rod type of asporous whose size is 1.0-1.5um; the scavenger enzyme is male and the oxidative enzyme is female which can not be hydrolysed starched and be gelatin liquidated; the methyl red reaction is female and not to produce the indole with the aquolysis temperature 80 deg. The Genbank landing number of the strain 16S rDNA is AY994060.
Owner:NANJING AGRICULTURAL UNIVERSITY

Production method of preserved beancurd

The invention relates to a method for preparing a preserved beancurd product, which belongs to the production field of the preserved beancurds. Primary fermentation and after fermentation are the key steps. The production process of the preserved beancurd comprises the following steps: soybean soaking, jordaning, filtering, warming, refiltration, defoaming, adding coagulant and blank forming, dicing, inoculating, primary fermentation, pickling, bottling, adding soup, covering and after fermentation. The raw materials of GMO free and green food are that protein contained in the soy bean is more than or equal to 38%, slag contained in the soy milk is less than or equal to 15%, crude protein contained in the bean dregs is less than or equal to 28%, and the final temperature of the soy milk in the final siruping tank of overflow tanks is more than or equal to 90 DEG C. When the jellied bean curd is 50%, turning over is carried out slowly and the flow rate of the coagulant is reduced, and when the jellied bean curd is 80%, turning over and the flow of the coagulant are stopped for standing statically; the squeezing is carried out at 8-10Mpa, the moisture content of white blank is 66-73%, the inoculation is carried out at the temperature of 40 DEG C, the primary fermentation is carried out for 36-48 hours and cages are exchanged for three times, and the first exchange, the second exchange and the third exchange are carried out respectively at the temperature of 23-28 DEG C, 22-26 DEG C and 18-22 DEG C. wherein, the relative humidity in the three exchanges are all 60%; pickling is carried out for 3-5 days, then after fermentation is carried out at the temperature of 15-30 DEG C for 45-60 days, and the finished product contains 3.5-18% of salt. The method of the invention can be used for preparing the preserved beancurd.
Owner:北京王致和食品有限公司

Culture method of stocking yellow cattle

The invention provides a culture method of stocking yellow cattle and belongs to the technical field of poultry culture. The culture method comprises the following steps: building and tidying a cowshed, feeding a feed, carrying out stocking management and cowshed management and the like, wherein a special yellow cattle feed adopted in the feed feeding phase is mainly prepared from fodder, wheat bran, a sunflower seed cake, corn meal, soybean meal, urea, salts, a residual forage, a rare earth feed and a traditional Chinese medicine composition, and the used traditional Chinese medicine composition is prepared from more than twenty traditional Chinese medicines including herba schizonepetae, sesame oil, omphalia, lotus root starch, rhizoma dryopteris crassirhizomatis and the like. By feeding the yellow cattle with the special yellow cattle feed, the own antiviral ability of the yellow cattle can be improved, and the special yellow cattle feed is also beneficial to absorbing nutritional components in the feed and converting the absorbed nutritional components to meat quality by the yellow cattle, so that the culture method is safe and healthy and does not have side or toxic effects.
Owner:周福弟

Microbial agent and application thereof

The invention relates to the field of microbial fermentation, in particular to a microbial agent and application thereof. The microbial agent is prepared from millet bran-like lactobacillus, clavispora lusitaniae, photosynthetic bacteria, bacillus subtilis and actinomycetes. The microbial agent provided by the invention can carry out synergistic effect, promotes growth of crops, regulates and controls metabolism of the crops, promotes formation of soil aggregates, improves a structure of soils, increases fertility of the soils and achieves the effects of increasing both production and income and improving the quality of the crops and the disease and pest resistance.
Owner:沈阳福田生物科技有限公司

Bacterium for degrading phoxim pesticide residue and produced bacterium formulation

The invention provides a degradation bacillus which can dispel the phoxime pesticide residue and its prodegradant. The used strain is Gram's staining reaction hysteroptosis X-12 which is Ochrobactrum.sp. The main biology characteristic is G-; the thaliana is the rod type whose size is (1.58-2.61)mu m*(0.79-1.23)mu m; it has flagellation around it and facultative anaerobes; the hydrogen peroxidase, oxidative enzyme, oxidation of ethanol and V.P. reaction is positive; the ketole reaction is negative; it can not be hydrolysed starched and oxide glucose to generate the acid so that the coagulate dydimic acid cow's milk; the Genbank landing number of the strain 16S rDNA is DQ093374.
Owner:NANJING AGRICULTURAL UNIVERSITY

Antibiotic-free feed additive and antibiotic-free feed

The invention discloses an antibiotic-free feed additive and an antibiotic-free feed. Raw materials of the antibiotic-free feed additive comprise clove, purple perilla, dried orange peel, garlic powder, alfalfa and Radix Astragali. The antibiotic-free feed comprises basic nutrients and 0.5-1wt% of the antibiotic-free feed additive. The antibiotic-free feed additive can replace an antibiotic added in feed, directly reduce an antibiotic use amount and reduce drug residues in animals. The antibiotic-free feed additive and the antibiotic-free feed do not contain any unsafe drug components and do not damage on animals. The broiler chicken eating feed adopting the antibiotic-free feed additive and the antibiotic-free feed does not contain antibiotic residues, has improved immunity, quality, taste and color, can be preserved for a longer time and can satisfy green food requirements.
Owner:SICHUAN GUOFENG ZHONGKE BIOTECH

Pyrethroid pesticide degrading bacteria and bactericide thereof

The invention discloses pyrethroid pesticide degrading bacteria and a bactericide thereof, belonging to the field of biological high-tech. The adopted strain ZS-S-01 is identified as Stenotrophomonas sp. with the preservation number of CCTCC M 2010095, wherein, the Genbank registry number of the 16S rDNA of the strain is HM016874. The main biological characteristics are as follows: the strain is Gram-negative and has multiple polar flagellum and cells in a short rod shape; and the bacterial colony is milky white and slight yellowish, thicker and non-transparent, the diameter is 0.5mm-1mm, the edge is regular and orderly, the middle part is slightly protruding, and the surface is smooth and bright without wrinkles. The bactericide of the invention has the advantages of low production cost, convenient use and good degradation effect, thus being applicable to the national fruit and vegetable production and export bases or places with green food brand marks at a large area. The bactericide is of great significance to promoting production of nuisance-free vegetables and green food.
Owner:SOUTH CHINA AGRI UNIV

Method for manufacturing red glutinous rice wine

The invention belongs to a method for manufacturing wines, and more particularly relates to a method for manufacturing red glutinous rice wine. The method sequentially comprises the processes: selecting material, washing the material, soaking the material, cooling the material, braising the material, cooling, stirring and mixing, fermenting, filtering and distilling. The proportion of the selected material is that red glutinous rice accounts for more than 50% of the total weight; the temperature of water used for soaking the material is 10-25 DEG C, and the time is 3-8h; in the process of stirring and mixing, the weight ratio between distiller yeast and the cooked glutinous rice is 1:100-4:100; in the fermentation process, the evenly stirred cooked material is added into a sealed container, purified water with the weight of 10-30% of the whole cooked material is added into the cooked material, the whole container is maintained at 10-25 DEG C, and fermentation is carried out for 5-10 days; and after fermentation, the mother wine can be obtained by filtering and distilling. The glutinous rice wine prepared by the method is mellow, bright in color, natural and transparent, has sweet aftertaste, contains no artificial color and is in accordance with the requirement of green food.
Owner:南通白蒲黄酒有限公司

Preparation method of pholiota nameko insoluble dietary fiber

The invention discloses a preparation method of pholiota nameko insoluble dietary fiber and provides a method for preparing insoluble dietary fiber by utilizing remaining residue of pholiota nameko after polysaccharides are extracted. The preparation method mainly comprises the following steps of: washing and drying the residue; crushing, sieving and adding water for swelling; removing protein by using a method of compounding trypsin or neutral protease and bromelain; removing protein by washing; bleaching; removing residual hydrogen peroxide; removing salt by acid treatment; washing the residue; drying, crushing and sieving to obtain the pholiota nameko insoluble dietary fiber. The preparation method of pholiota nameko insoluble dietary fiber provided by the invention can be used for preparing the pholiota nameko insoluble dietary fiber by utilizing the residue of the pholiota nameko after the polysaccharides are extracted, thus changing wastes into valuables, saving resources, improving the utilization rate of the pholiota nameko, and providing a new way for the development and utilization of pholiota nameko products. Moreover, the preparation method adopts natural raw materials, thus being in line with the requirements for green foods. The obtained insoluble dietary fiber is high in content which is above 95%, pure white or light yellow in color and luster, and easy to add into other foods.
Owner:TIANJIN UNIV OF COMMERCE

Metribuzin pesticide residue degrading bacteria, microbial agent produced through same and application of metribuzin pesticide residue degrading bacteria

The invention provides metribuzin pesticide residue degrading bacteria and a microbial agent produced through the same. The bacterial strain is gram-positive bacteria, and is authenticated as Rhodococcus sp. and preserved in the China Center for Type Culture Collection on June 29, 2015, and the preservation number of the bacterial strain is CCTCC NO: M2015392. A culture solution obtained after QCT10 bacterial strain fermentation is the microbial agent. According to the QCT10 bacterial strain and the microbial agent produced through the same, the quantity of metribuzin pesticide residues in soil can be reduced by 50% or above, and the problem that the metribuzin pesticide residues exceed the standard in agricultural production can be solved.
Owner:NANJING AGRICULTURAL UNIVERSITY

Traditional Chinese medicinal material additive for antibiotic-free breeding industry

The invention discloses a preparation method of a traditional Chinese medicinal material additive for antibiotic-free breeding industry and relates to the field of feed additives. In order to improve the defects of the prior art, an antibiotic-free pure traditional Chinese medicinal material additive which is capable of dispelling parasite and strengthening kidney, strengthening spleed and stimulating appetite, enhancing appetite, clearing heat for detoxification, resisting disease and diminishing inflammation, tranquilizing and enlightening, tonifying blood and qi, helping digestion to relieve indigestion, enhancing immunity, increasing content of protein and amino acid, lowering content of cholesterol and fat and preventing and treating disease and suitable for the whole growing process of livestock, poultry and fish in the breeding industry is provided and composed of 68 traditional Chinese medicinal materials. Traditional Chinese medicine is applied in feed and used in the whole growing process of poultry and livestock, immunity of poultry and livestock is improved greatly, disease occurrence probability is reduced, and effect of preventive treatment of disease on poultry and livestock can be realized, so that quality and safety of poultry-livestock products are guaranteed from the source, human health is guaranteed, resources are saved, and environment is protected.
Owner:李明山

Ecological breeding method for local chickens

The invention discloses an ecological breeding method for local chickens. The method comprises the steps that chickens are obtained by selecting breeding eggs and controlling the temperature and humidity conditions, and the hatched chickens are raised; when the chicken age reaches 10 weeks, the chickens are raised with feed, and meanwhile artificial immunization is performed on the chickens; outdoor planting forest raising is performed after the raising period, the stocking density and time are controlled, and healthy growth of the chickens is guaranteed. Compared with the prior art, the ecological breeding method for the local chickens has the advantages that raising is performed by mainly adopting a stocking mode and simultaneously being matched with the feed, and therefore obtained chicken has the advantages of being tender, delicious in taste, high in quality and capable of meeting the requirements of green food; meanwhile, idle land in a mountainous area is fully utilized, therefore, the survival rate of the chickens is greatly improved, and the chicken breeding cost is lowered.
Owner:铜陵润生生态养殖有限公司

Nutrient additive grain of edible fungus

A granular nutritive additive for culturing edible fungus is composed of core containing crude protein and the water-insoluble coated layer which can be decomposed into carbonhydrate by the mycelia of edible fungus. It can be added to the culture medium of edible fungus to greatly increase the yield of edible fungus.
Owner:郑祥品

Attar saturated dew distillate and its preparing method and application

The invention discloses a saturated distillate of rose oil and making method and application, which is characterized by the following: allocating raw material through 20-60% fresh rose bulb and 40-80% spring; distilling raw materials; cooling; obtaining the product.
Owner:李一雯

Big fixed net cage for cultivating seawater fishes and using method thereof

The invention belongs to the field of seawater cultivation engineering and particularly discloses a big fixed net cage for cultivating seawater fishes and a using method thereof. The big fixed net cage for cultivating the seawater fishes and the using method thereof solve the problems of poor anti-typhoon capability, more diseases, high making cost and the like of the current net cages. Piles of the net cage are distributed along the periphery; a net encloses the piles to form a cage structure; the upside and the lower side of the net are coiled by an upper net cable and a lower net cable; the tops of the piles are connected with diagonal tension cables II; the upper parts of the piles are connected with diagonal tension cables I; and the tops of the corresponding piles are connected by transverse cables. By piling piles under the sea and providing the transverse cables, the diagonal tension cables, the upper and lower cables of the nets to fix the big nets, the cultivating capacity of the net cage is improved, the cultivating cost is reduced, the quality of the cultivated fishes is improved and the cultivating environment is protected. The big fixed net cage for cultivating the seawater fishes and the using method thereof make a full use of and maintain a good ecological environment for cultivation, produce the highly qualified seawater fishes, prevent the cultivating area from being polluted and prevent the occurrence of diseases in the aquaculture, improve the living environment for the cultivated fishes and reduce losses due to natural disasters.
Owner:宁德市登月水产食品有限公司

Degradating bacteria for hexachlorocyclohexane pesticide residue and its produced strain

InactiveCN1648238AEfficient degradationEfficient degradation efficiencyBacteriaMicroorganismSphingomonas sp.
The present invention provides a kind of bacteria preparation for efficiently degrading hexachlorocyclohexane (HCH) pesticide residue. The strain BHC-A is Sphingomonas sp., can growth with HCH as the unique carbon source and energy source, and degrade alpha-HCH, beta-HCH, gamma-HCH and delta-HCH in short time at high efficiency. The present invention solves the difficult problem of aerobically biodegrading beta-HCH, and can mineralize 5 mg / L beta-HCH completely within 12 hr. Applying the degrading bacteria product directly can lower the residual HCH amount in soil by over 95 % to lower the HCH residue in agricultural product.
Owner:NANJING AGRICULTURAL UNIVERSITY

Chitosan preservative for edible fungi and preparation method thereof

The invention provides a chitosan preservative for edible fungi and a preparation method thereof. The technical scheme is that: the preparation method comprises the following steps of: 1, dissolving 20 grams of chitosan with the deacetylation degree of more than or equal to 85 percent into 1,000 milliliters of 4 percent citric acid solution to prepare 2 percent chitosan solution; 2, irradiating the prepared 2 percent chitosan solution by using gamma rays produced by cobalt-60, wherein the irradiation absorbed dose is 3 to 10 KGY; and 3, adding 1 percent ascorbic acid into the irradiated 2 percent chitosan solution for uniform stirring, wherein the chitosan has the deacetylation degree of more than or equal to 85 percent and is bought from the market; the nitric acid is chemically pure; water adopts de-ionized water; the ascorbic acid is water soluble vitamin with the melting point of 190 to 192 DEG C, and is bought from the market; and an institution for executing the irradiation necessarily has a license. The product prepared by the method of the invention is easy to hydrate, has high water absorptivity, a high water-retaining property, a high antibacterial property and high biocompatibility, and belongs to a biological preservative.
Owner:李新胜
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