215 results about "Sodium sorbate" patented technology

Novel antimicrobial products and methods of making and using the same are shown, whereby the products can be used in the same or greater percentages as conventional microbial growth inhibitors without imparting an off-flavor, taste, color or odor to the products in which they are used. The antimicrobial products are formed by reacting azodicarbonamide or an ammonia gas with a compound selected from the group consisting of benzoic acid, sodium benzoate, calcium benzoate, potassium benzoate, acetic acid, sodium diacetate, paraben, niacin, calcium acetate, calcium diacetate, citric acid, lactic acid, fumaric acid, sorbic acid, sodium sorbate, calcium sorbate, potassium sorbate, propionic acid, sodium propionate, calcium propionate, potassium propionate and mixtures thereof. In one embodiment, the product is prepared by placing a layer of azodicarbonamide on a substrate and covering the layer with a gas permeable separator. The antimicrobial compound is then added on top of the separator, and the combination is heated to form the final product. In another embodiment, the product is prepared by exposing the antimicrobial compound to an ammonia gas. The ammonia gas reacts with free acids in the antimicrobial compound to convert the free acids into ammonium salts, thereby eliminating off-flavor and off-odor of the resulting antimicrobial product. The antimicrobial products prepared according to the present invention are suitable for use in foodstuffs, sanitation products, cosmetics, pharmaceuticals, and so forth.

The invention provides a litchi preservative which is composed of the following components in parts by mass: 2-3 parts of lignin, 2-3 parts of sucrose ester, 0.8-1.2 parts of sodium sorbate, 0.2-0.4 part of calcium chloride, 0.1-0.15 part of calcium stearate, 0.02-0.03 part of sodium tartrate, 0.008-0.012 part of sodium alginate and 200-210 parts of water. The invention also provides a preparation method of the litchi preservative, which comprises the following steps: mixing the sucrose ester, sodium sorbate, sodium alginate, calcium chloride, calcium stearate and water according to the formula, stirring for 20-25 minutes, heating to 50-55 DEG C, adding the lignin and sodium tartrate according to the formula, stirring for 10-15 minutes and cooling to room temperature. The litchi preservative has the advantages of simple preparation method, reasonable formula, low cost and favorable preservation effect, is convenient to operate, and can prolong the litchi preservation period by 22-30 days.

The invention provides a dust suppressant and a preparing method thereof, and relates to the field of environment protection. The dust suppressant is prepared from sodium alginate, hydroxypropyl starch, propylene glycol, ethylene glycol, sodium sorbate, sodium diacetate, sodium lignin sulfonate, 2,2,4-trimethyl-1,3-pentanediolmono(2-methylpropanoate) and calcium chloride. By means of the dust suppressant, the surface tension of dust can be reduced, dust can be rapidly wetted, gathered and settled, cured films with certain strength and tenacity can be formed on the surfaces of dust, and dust is prevented from rising along with wind and effectively prevented from polluting the environment. According to the dust suppressant, as the calcium chloride is used as an anti-freezing assistant, and the sodium diacetate and the sodium sorbate are used as sterilizing agents, the freezing problem of a dust suppressant in winter can be solved, and harmful bacteria in dust surrounding air can be killed; in addition, the adopted raw materials can be easily degraded, secondary pollution is avoided, the dust suppressing effect is obvious, the application range is wide, and the dust suppressant and the preparing method are worthy of application and popularization.

The invention belongs to the technical field of chemical preparations and in particular relates to a catching agent of benzene series compounds and a preparation method thereof. The catching agent of the benzene series compounds comprises the following raw materials in parts by weight: 5-8 parts of polyacrylamide, 10-20 parts of starch, 8-15 parts of sorbic acid, 10-15 parts of sodium sorbate, 30-45 parts of plant flower extractive, 5-10 parts of penetrating agent, 15-20 parts of sepiolite powder, 1-3 parts of cerium manganese compound oxide catalyst, 5-10 parts of cross-linked rectorite, 10-20 parts of chitosan and 80-100 parts of deionized water. The catching agent of the benzene series compounds is good in absorption and long in service life, so that the pollution caused by the benzene series compounds after decoration of a house is solved; meanwhile, the catching agent of the benzene series compounds is also capable of effectively inhibiting or killing some bacteria and viruses in influenza, intestinal tract and skin; the catching agent of the benzene series compounds is beneficial to the health of people.

The present invention is directed to a preserved liquid aqueous pharmaceutical composition comprising one or more etherified cyclodextrin derivatives; one or more water-soluble preservatives; preferably selected from the group consisting of sorbic acid or salts thereof, preferably sodium sorbate, potassium sorbate, calcium sorbate; benzoic acid or salts thereof, preferably sodium benzoate; benzalkonium chloride; benzethonium chloride; cetylpyridinium chloride; sodium metabisulfite; sodium acetate; parabenes and salts thereof, preferably methylparabene, ethylparabene, propylparabene, butylparabene, butylparabene sodium; or combinations thereof; and at least one pharmaceutically active compound which is poorly water-soluble, very poorly water-soluble or water-insoluble. The liquid aqueous pharmaceutical composition provides an acceptable solubility of the pharmaceutically active compound, such as pimobendan, in aqueous solution whereby the water-soluble preservatives retain their effectiveness in the presence of the etherified cyclodextrin derivatives allowing the use in an oral administration form.

The invention discloses a wear resistant high-strength corrugated board and a preparation method thereof. The corrugated board is formed by compounding upper-faced paper, a V-shaped corrugated core and lower-faced paper, the V-shaped corrugated core is composed of a corrugated core base layer and protective layers sizing on both sides of the base layer, the corrugated core base layer is prepared from the following raw materials in parts: 100 parts of red pine wood pulp, 30-50 parts of bamboo pulp, 20-30 parts of fluff pulp, 40-60 parts of waste paper pulp, 1-5 parts of cyclodextrin, 10-15 parts of oxidated cassava starch, 4-8 parts of composite reinforced fibers, 1-3 parts of cationic polyacrylamide, 0.01-0.1 part of sodium sorbate, 0.1-0.3 part of antimonous oxide, 0.1-0.5 part of poval,5-7 parts of polydimethylsiloxane, and each protective layer is prepared from the following components in percentage by weight: 40-60% of a hydroxylation graphene modified ylate emulsion, 5-10% of sodium caseinate, 20-30% of cationic rosin size and 15-20% of montmorillonite. The corrugated board has the high mechanical strength, excellent wear resistance, excellent shock resistance, excellent water resistance and excellent moisture resistance, has certain antibacterial and mildew-proof effects, the preparation technology is simple, operation is convenient and fast, and repeat sizing is not needed.

The invention provides a litchi preservative which is composed of the following components in parts by mass: 2-3 parts of sucrose ester, 0.8-1.2 parts of sodium sorbate, 0.12-0.18 part of malic acid, 0.02-0.03 part of sodium tartrate, 0.006-0.008 part of sodium alginate, 0.005-0.008 part of potassium permanganate and 200-210 parts of water. The invention also provides a preparation method of the litchi preservative, which comprises the following steps: mixing the sucrose ester, sodium sorbate, sodium alginate and water according to the formula, stirring for 20-25 minutes, heating to 55-60 DEG C, adding the malic acid and sodium tartrate, stirring for 15-20 minutes, cooling to room temperature, adding the potassium permanganate, and stirring uniformly. The litchi preservative has the advantages of simple preparation method, reasonable formula, low cost and favorable preservation effect, is convenient to operate, and can prolong the litchi preservation period by 25-30 days.

A composite film forming fresh-keeping agent is disclosed. The composite film forming fresh-keeping agent includes, by weight, 1.5-2 parts of carboxymethyl chitosan, 1.5-2 parts of sodium alginate, 2-3 parts of tea polyphenols, 0.5-0.6 part of epsilon-polylysine, 0.2-0.3 part of VC, 0.05-0.06 part of nanometer TiO2, 2-2.6 parts of bone polypeptides, 0.15-0.2 part of nisin, 0.3-0.5 part of sodium phytate, 0.3-0.5 part of sodium sorbate, 0.5-0.8 part of a fishy flavor removing agent, 0.3-0.6 part of a plant extract, 1.2-1.5 parts of a film forming agent, 0.5-0.6 part of an emulsifier and 90-100 parts of distilled water. Beneficial effects of the composite film forming fresh-keeping agent are that the composite film forming fresh-keeping agent is simple to prepare, has good film forming effects and a high film forming speed, and has strong effects of removing fish flavor, achieving bacteriostasis, preventing oxidation, inhibiting enzyme activity, delaying a situation that the pH of fish reaches a pH limit, and the like, and the composite film forming fresh-keeping agent is capable of removing fishy flavor, high in efficiency, safe, and free of toxic and side residues.

The present invention provides a compound food coloring preservative and the making method. The compositions of the present invention based on weight ratio are: cooked cured-meat pigment 30-35 percent, nisin 1-1.5 percent, sodium dehydroacetate 10-15 percent, potassium sorbate 10-15 percent, D- gluconic acid-triangle-lactone 30-35 percent and ascorbic acid 10-15 percent. The present invention uses cooked cured-meat pigment, which is made by the reaction of hemoglobin and sodium nitrate, and a certain quantity of nisin, sodium dehydroacetate, sodium sorbate, D- gluconic acid-triangle-lactone and ascorbic acid to completely compound based on a certain ratio, and then the present invention shows a good effect of replacing sodium nitrite, which not only can make the meat products have good color, but also can extend the shelf life of products. The results show that the compound food coloring preservative has good functions of colorizing and bacteriostasis, can obviously restrain the growth of microorganism in the meat products, can reduce the residue of the nitrate, can extent the shelf life of the meat products, and can produce meat products in place of sodium nitrate.

The invention belongs to the technical field of a chemical preparation and particularly relates to a building finishing pollutant treating agent and a preparation method thereof. The building finishing pollutant treating agent comprises the following raw materials in parts by weight: 10-20 parts of amino acid, 10-20 parts of polyacrylamide, 5-10 parts of casein, 10-20 parts of isoamyl alcohol, 5-10 parts of activated carbon carboxymethylcellulose, 10-20 parts of starch, 8-16 parts of sorbic acid, 8-15 parts of sodium sorbate, 30-50 parts of extractives of plant flowers, 5-12 parts of a penetrant, 16-25 parts of sepiolite powder, 1-3 parts of a manganese-cerium composite oxide catalyst, 5-15 parts of cross-linking rectorite, 10-20 parts of chitosan and 120-200 parts of deionized water. The building finishing pollutant treating agent provided by the invention has the advantages of good adsorbability and long service life, so that the pollution caused by the building finishing pollutant in indoor finishing can be solved.

The invention relates to a method for preparing novel margarine by replacing animal fat with vegetable fat and gel. The invention provides a preparation method of novel margarine, aiming at solving the safety problem caused by trans-fatty acid and saturated fatty acid in dietary life. The preparation method specifically comprises the following steps: by taking supercritical rapid extracted vegetable fat as an oil base and one or more of cinnamic acid, oryzanol, sterol and monoglyceride as gel, adding 4%-20% of the oil base and gel into vegetable oil, forming a heat solution in a form of physical heating, then adding lecithin, sucrose ester, salt, citric acid, EDTA2Na, casein, sodium sorbate and milk, stirring for 5-15min at 3000-6000rpm, performing ice bath for 30min, and storing for 24h at 4 DEG C so as to be self-assembled to form the novel margarine. The obtained novel margarine has smearing and plasticity performances, can be applied into related food products as novel margarine, and can meet demands of people on healthier and safer food.

The invention provides a citrus fruit preservative. The citrus fruit preservative comprises the following components in parts by mass: 3-5 parts of sucrose ester, 1-2 parts of citric acid, 1-2 parts of sodium glutamate, 0.6-0.8 part of sodium nitrate, 0.5-0.6 part of sodium sorbate and 150-160 parts of water. The citrus fruit preservative has the advantages that a preparation method is simple, a formula is reasonable, the cost is low, the operation is convenient during using, effects are uniform, and a preservation effect is good; compared with other commercially available preservatives, the citrus fruit preservative has the advantage that the preservation period is prolonged by above 20%.

The invention discloses antimicrobial disinfecting hand cream and a preparation process thereof, belonging to the technical field of daily cosmetics. Components in the hand cream comprise, by weight percentage, 0.1% to 10% of the extractive of root of large-flowered skullcap, 0.1% to 10% of the extractive of root of fructus forsythiae, 0.1% to 10% of the extractive of root of tarragon, 0.1% to 10% of the extractive of coptis, 10% to 20% of Vaseline, 5% to 15% of octadecanol, 5% to 10% of polyethylene glycol-400 (PEG-400), 5% to 10% of cetanol, 5% to 10% of glycerol monostearate, 10% to 25% of glycerol, 5% to 10% of liquid paraffin, 0.1% to 0.2% of sodium sorbate and 30% to 50% of purified water. The preparation process is as follows: the extractive of root of large-flowered skullcap, the extractive of root of fructus forsythiae, the extractive of root of tarragon, the extractive of coptis and polyethylene glycol-400 (PEG-400) are fully mixed and merged together with the rest components, and homogeneous emulsification and stirring are carried out so as to obtain the antimicrobial disinfecting hand cream. The antimicrobial disinfecting hand cream has the beneficial effects of protecting hands and killing bacteria and thoroughly blocks the propagation of bacteria.

A disclosed modified fresh-keeping agent for aquatic products is prepared from the following raw materials in parts by weight: 50-80 parts of water, 30-40 parts of chitosan oligosaccharide, 5-8 parts of citric acid, 15-25 parts of mussel agglutinin, 8-12 parts of sodium chloride, 15-30 parts of tea polyphenol, 7-10 parts of glacial acetic acid lysozyme, 15-20 parts of ethanol, 8-18 parts of glycine, 4-11 parts of chitosan, 10-15 parts of sodium sorbate, 6-9 parts of lactic acid and 6-9 parts of potassium sorbate. The provided modified fresh-keeping agent for aquatic products is reasonable in formula, good in usage effect, low in cost, capable of prolonging fresh-keeping period of aquatic products and guaranteeing food safety.

The invention relates to a mildew-inhibiting composition which comprises the components in parts by weight as follows: 10-15 parts of modified nanometer montmorillonite, 5-10 parts of dimethyl fumarate, 2-5 parts of ethyoxyl quin, 20-25 parts of sodium glutamate, 20-30 parts of nucleotide disodium, 10-15 parts of sanguinarine, 15-30 parts of glutathione, 10-15 parts of choline chloride, 15-20 parts of glycine betaine, 10-15 parts of sodium sorbate, 2-5 parts of chitosan, 3-9 parts of gala mannan oligosaccharide, and 1-5 parts of fructo-oligosaccharide. The mildew-inhibiting composition provided by the invention further has the effects of enhancing the immune function of animals, strengthening the detoxifying function by liver and kidney and promoting the feed intake of poultry besides good bacteria-inhibiting and sterilizing effects.

The invention discloses stomach-invigorating digestion-aiding watermelon jam and a processing method thereof. The stomach-invigorating digestion-aiding watermelon jam comprises, by weight, 8-12 parts of watermelon pulp, 20-30 parts of soybeans, 5-8 parts of wheat meal, 1-3 parts of sweet potatoes, 3-5 parts of cabbages, 1-3 parts of Chinese yam, 5-7 parts of pawpaw, 1-3 parts of hericium erinaceus, 2-4 parts of dried mushroom, 1-4 parts of Chinese dates, 3-5 parts of fructus amomi, 1-3 parts of tsaoko amomum fruit, 0.8-1.2 parts of inner membrane of chicken gizzard, 2-4 parts of hawthorn fruit, 2-3 parts of poria, 20-25 parts of vegetable oil, 3-5 parts of white sugar, 3-6 parts of salt, 0.5-0.7 part of spice, 0.2-0.4 part of sodium benzoate, 0.1-0.3 part of sodium sorbate and 0.5-0.7 part of acesulfame. The stomach-invigorating digestion-aiding watermelon jam using the watermelon pulp, the soybeans and wheat meal as main raw materials is pure in taste, aromatic and moderately sweet, and aftertaste lingers. Besides, various Chinese medicinal herbs of the cabbages, the Chinese yam, the pawpaw, the hericium erinaceus, the dried mushroom, the Chinese dates, the fructus amomi, the tsaoko amomum fruit, the inner membrane of chicken gizzard, the hawthorn fruit and the poria are added into the raw materials, and accordingly the stomach-invigorating digestion-aiding watermelon jam is rich in nutrition, has the stomach-invigorating digestion-aiding effects and is capable of guaranteeing fitness of eaters.

The invention discloses refreshing and health-care herbal tea and a preparation method thereof. Little chrysanthemums, American ginseng, radix platycodi, fructus lycii, fructus crataegi, semen cassiae, dandelions and the like are subjected to water extraction, honey, xylitol, lactic acid, sodium sorbate and taurine are added, the mixture is stirred uniformly and then subjected to ultra-filtration and vacuum degassing, the mixed solution subjected to vacuum degassing is bottled, sealed and subjected to super-high-pressure sterilization, and the refreshing and health-care herbal tea is obtained. The refreshing and health-care herbal tea can be taken as a soft drink in all seasons, can perform the refreshing and health-care functions, can enrich the consumer market, meets nutrition and health-care requirements of consumers in hot summer and has relatively high development value.

The invention relates to a novel saliva preserving fluid comprising the following components: 1-10mmol / L of EDTA, 1-50mmol / L of Tris-HCl, 10-100 mmol / L of sodium chloride; 0.1-3% (w / v) of sodium sorbate, 0.1-3% (w / v) of sodium diacetate, 0.01-0.1% (v / v) of proclin 300, 0.1-1% (v / v) of TWEEN20, 0.1-1% (w / v) of NP40 and 0.1-2% (w / v) of SDS. The novel saliva preserving fluid is used for preservingsaliva samples, can effectively inhibit nuclease activity, prevent microbial pollution, guarantee DNA fragment integrity and purity, simplify pretreatment steps, is suitable for centrifuge-free and low-temperature environments, can guarantee transport stability of samples among different places, and is suitable for molecular epidemiological large-scale population investigation and research.

The invention discloses a protein plastic material comprising the following raw materials in parts by weight: 45-50 parts of PBS (poly butylenes succinate), 30-35 parts of poly-beta-hydroxybutyric acid (PHB), 20-25 parts of peanut protein powder, 2.5-3 parts of potassium titanate fiber, 5-7 parts of silk fiber, 1.2-1.7 parts of a silane coupling agent KH570, 2-3 parts of sodium sorbate, 1.1-1.6 parts of ethyl p-hydroxybenzoate, 1.7-1.9 parts of diisooctyl phthalate (DIOP), 3-6 parts of epoxidized soybean oil, 3-5 parts of starch acetate, 15-18 parts of talcum powder, 7-11 parts of wollastonite powder, 5-9 parts of calcite powder and 1-1.4 parts of tert-butylhydroquinone (TBHQ). The protein plastic material disclosed by the invention can be decomposed by microorganisms, and is strong in ductility and good in impact resistance and oxidation resistance, the generation of white pollution can be avoided and the consumption of agricultural product resources can also be reduced.

The invention discloses a preparation method and an application of traditional Chinese medicine Artemisia argyi essential oil, and belongs to the field of preparation of traditional Chinese medicine preparations. The preparation method comprises the following steps: S1, taking crushed Artemisia argyi, S2, putting the weighed Artemisia argyi into a supercritical extraction device, and obtaining crude volatile oil through a supercritical extraction technology; S3, removing wax in the volatile oil to obtain dewaxed Artemisia argyi volatile oil; S4, taking Artemisia argyi medicine dregs subjectedto the supercritical extraction technology, and obtaining a volatile oil product by utilizing a steam distillation process; S5, mixing the dewaxed volatile oil obtained through the supercritical extraction technology with the dried volatile oil obtained through the steam distillation technology; S6, accurately weighing grape seeds; S7, squeezing grape seed oil by a cold squeezing technology; S8, taking and mixing 150 ml of the Artemisia argyi essential oil and 1500 ml of grape seed oil according to a ratio of (1-3):10; and S9, adding sodium sorbate according to a proportion of 0.05-0.1%, performing uniform stirring, and sub-packaging and sealing the obtained final product. The troubles of inconvenient use, inconvenient carrying and environmental pollution are overcome, the content of effective components is obviously increased, or the sleep guiding effect is very obvious.

The invention discloses a vegetable and fruit freshness-preservation preparation. The vegetable and fruit freshness-preservation preparation is prepared from the following raw materials in parts by weight: 3-5 parts of lignin, 1.0-2.5 parts of sodium tartrate, 0.2-1.4 parts of sodium alginate, 0.01-1.5 parts of tea polyphenols, 1.5-3.5 parts of calcium chloride, 0.1-0.5 part of sodium metabisulfite, 3-5 parts of fiveleaf gynostemma herb, 3-5 parts of houttuynia cordata, 0.5-1.5 parts of thiabendazole, 0.5-1.5 parts of ammonium nitrate, 0.001-0.005 part of a plant growth regulator, 1-10 parts of bletilla striata gelatin, 1-2 parts of ascorbic acid, 3-5 parts of salicylic acid, 3-5 parts of acetic acid, 30-40 parts of modified starch, 3-5 parts of ammonium chloride, 10-15 parts of sodium bicarbonate, 0.4-0.6 part of sodium sorbate, 0.2-0.3 part of ethanol and 0.5-0.6 part of white granulated sugar. The vegetable and fruit freshness-preservation preparation is reasonable in formula, low in cost, uniform in effect and good in freshness-preservation effect and is suitable for transportation and freshness preservation of various types of vegetables and fruits; the quality of the vegetables and the fruits is effectively guaranteed and the freshness-preservation period of the vegetables and the fruits can be prolonged for 7-8 months.

The invention discloses a processing method of an astragalus membranaceus decoction block. The processing method comprises the following steps: selecting fresh astragalus membranaceus, sequentially cleaning, tidying and cutting, performing quick freezing, naturally thawing table vinegar, airing, and soaking in a mixed nutrient solution; pressing, shaping, and drying to obtain the astragalus membranaceus decoction block. In the astragalus membranaceus decoction block prepared by the processing method, enzymatic activity in the astragalus membranaceus is reduced by quick freezing and in other ways, so that loss of nutrients is reduced; through soakage of sodium chloride, citric acid, sodium sorbate and the other nutrients, the nutritional value of the decoction block is improved; the decoction block has health-care efficacies of protecting the liver, promoting urination, resisting aging and the like.

The invention discloses modified environmental protection plastic with high ductility, impact resistance and oxidation resistance. The modified environmental protection plastic comprises the following raw materials in parts by weight: 45-50 parts of poly butylenes succinate (PBS), 30-35 parts of poly-beta-hydroxybutyric acid (PHB), 20-25 parts of peanut protein powder, 2.5-3 parts of potassium titanate fiber, 12-15 parts of coconut fiber, 1.2-1.7 parts of a silane coupling agent KH570, 2-3 parts of sodium sorbate, 1.1-1.6 parts of ethyl p-hydroxybenzoate, 1.4-1.6 parts of dioctyl phthalate (DOP), 1,2-1.6 parts of zinc stearate, 3-5 parts of starch acetate, 15-18 parts of talcum powder, 7-11 parts of wollastonite powder, 5-9 parts of calcite powder, 7-11 parts of sepiolite,1-1.4 parts of tertiary butyl hydroquinone (TBHQ) and 1-1.4 parts of 2,6-di-tert-butyl-4-methylphenol (BHT). The modified environmental protection plastic disclosed by the invention can be decomposed by microorganisms and is high in ductility and good in impact resistance and oxidation resistance.

The invention discloses a boiler detergent composed of citric acid, sodium sorbate, sodium dodecylbenzene sulfonate, and trisodium phosphate. The boiler detergent provided by the invention is advantaged in reasonable formula, good application effect and low production cost.

The invention discloses a quince preservative which is prepared by mixing calcium peroxide, sodium sorbate, citric acid, malic acid and glycol. The invention has reasonable prescription, convenient manufacturing, low product cost and good preservation effect.

The invention discloses a cleaning agent for cleaning fruits and vegetables. The raw materials comprise lactic acid, tartaric acid, malic acid, acetic acid, vitamin C, sodium sorbate, magnesium carbonate, pectin, carrageenan, glycerol monostearate, tripolycerol stearate, soy lecithin, taurine, tripolyphosphate, sodium ethylenediamine tetraacetate, benzoic acid, xylitol, cyclodextrin, hydroxypropyl cyclodextrin, cyclodextrin oxalate, carboxymethyl cyclodextrin, gelatin, guar gum, xanthan gum, chitosan, carboxymethyl cellulose, and pregelatinized starch. The cleaning agent provided by the invention is non-toxic and harmless, can be used for effectively removing pesticides, chemical fertilizers and hormone residues on the fruits and vegetables, and has the advantages of good safety and high efficiency; even the cleaning agent is remained on the fruits and vegetable or a little of the cleaning agent is eaten by mistake, no harm can be caused to a human body; the fruit and vegetable washed by the product is good in mouth feeling and free of any other peculiar smell.

The invention provides a seed soaking agent for preventing ginger bacterial wilt, as well as a preparation method and an application thereof, which belongs to the technical field of pesticide. The seed soaking agent consists of 30 to 60 percent of 80 percent sodium sorbate, 35 to 65 percent of 40 percent chlorothalonil, 0.5 to 1 percent of 80 percent sodium natrophenolate, and 1 to 5 percent of 95 percent sodium sulfite. The sodium sorbate and the chlorothalonil are mixed, ground and then passed through a 200-mesh sieve; the sodium natrophenolate and the sodium sulfite are mixed, ground and then passed through an 80-mesh sieve; and mixtures are mixed by a mixer again and then are quantificationally packaged so as to obtain the seed soaking agent. Every 100 grams of the seed soaking agent are prepared into 250 times of solution (namely 25 kilograms of solution) in order to soak 250 kilograms of ginger seeds for 20 to 30 minutes. The field control effect of the agent can reach 80 to 85 percent, and is improved by 24 to 32 percent in contrast with comparison control effect between 48 and 61 percent. The agent has the advantages of low cost which is 5 yuan per mu, sufficient raw materials, food grade, low toxicity, safety, harmlessness, simple production process, no wastewater and no waste residue.

The invention relates to the technical field of fruit fresh keeping, in particular to a modified sodium alginate fruit fresh-keeping agent and a preparation method thereof. The modified sodium alginate fruit fresh-keeping agent is mainly prepared from the raw materials in parts by weight: 30 to 50 parts of modified sodium alginate, 1 to 3 parts of ginkgo nut biloba sarcotesta extract, 0.2 to 1 part of bamboo palm extract, 1 to 4 parts of citric acid, 1 to 2 parts of sodium sorbate, 0.1 to 0.15 part of sucrose fatty acid ester, and 100 to 150 parts of water. By adopting the modified sodium alginate fruit fresh-keeping agent and the preparation method thereof, the effect of a fruit fresh-keeping agent coating for preventing the water loss in the fruit and preventing the rotten deteriorationof the fruit can be greatly improved, and the external biological infection resistance effect of the fruit fresh-keeping agent can be improved.

The invention discloses a high-protein high-yield feed for river crabs. The high-protein high-yield feed is prepared from the following raw materials: rapeseed dregs, cottonseed dregs, distiller grains, corn flour, bran, handmade noodles, sweet potato flour, soy bean meal, alpha-starch, wheat middling, dried bean curd stick powder, white fish meal, silkworm chrysalis meal, inkfish paste, yellow mealworm powder, neural alfalfa powder, water barnyardgrass, herb of rice galingale, seaweed meal, zeolite powder, monocalcium phosphate, bentonite, vegetable oil, whey powder, saccharicterpenin, manno-oligosaccharides, allicin, glycine betaine, glucose sorbic acid, polyvinylpyrrolidone, multi-vitamins, compound amino acid, compound mineral elements, complex enzyme, a compound microbe additive, a non-protein nitrogen compound supplement, propyl gallate, a phagostimulant, sodium sorbate, sodium glutamate and sodium alginate. After being used for culturing river crabs, the feed is capable of effectively improving the yield and quality of the river crabs.

The invention relates to an antibacterial and deodorization agent. The antibacterial and deodorization agent is prepared from the following components in parts by weight: 0.1 to 10 parts of natural marine extract, 3 to 25 parts of an antibacterial agent, 5 to 35 parts of nano iron, 2 to 15 parts of nano calcium, 0.1 to 5 parts of sodium sorbate and 70 to 94 parts of de-ionized water. The antibacterial and deodorization agent provided by the invention adopts a unique formula; the antibacterial agent, the natural marine extract, the nano iron and the nano calcium have a synergistic effect; under the assistance of the sodium sorbate, the antibacterial and deodorization agent provided by the invention not only has good anti-mildew, bacterium-removing and deodorization function effects and the like, and also has relatively small damages to human bodies; under the protection of a net-shaped structure formed by the natural marine extract, under the protection of the nano iron and the nano calcium, the antibacterial agent is slowly released so that the bactericidal effect is more lasting; the natural marine extract has the advantages of abundant sources, good biodegradability, uneasiness for causing secondary pollution, safety and no toxin and the like and has relatively small damages to the human bodies.