128results about How to "Guarantee food safety" patented technology

The invention provides an enzyme preparation for removing pesticide residual on the surfaces of vegetables and fruits and a preparation method of the enzyme preparation. The enzyme preparation comprises one or more enzymes and alkaline buffer salts, wherein each enzyme preparation is the particular preparation with aperture distributed from 50 to 500 nanometers. The enzyme preparation further comprises fillers with porous structures; and the enzyme preparation is prepared by the method comprising the following steps: pelletizing the mixing materials of one or more enzymes and fillers to obtain the enzyme particle mixture; embedding 45wt% to 55wt% of enzyme in the enzyme particle mixture into the filler; and then mixing the enzyme particle mixture and the water solution of the alkaline buffer salt through a fluidized bed. With the adoption of the enzyme preparation provided by the invention, the pesticide residual on the surfaces of the vegetables and the fruits can be completely and effectively removed; harmful microorganism on the surfaces of the vegetable and fruit can be removed; and the quality of the vegetable and fruit can be further improved.

The invention relates to the technical field of monitoring and evaluation of a farmland soil environment, in particular to an evaluation method of quality of combined pollution farmland soil. The method comprises the steps of collecting a sample, determining a pollution index and a fertility index of the sample, performing principal component analysis on determination results, making judgment, performing pollution classvevaluation and then performing fertility grade evaluation under different pollution classes if the influence of a pollution factor is higher than that of a nutrient fertility factor, and performing the fertility grade evaluation and then performing the pollution class evaluation under different fertility grades if the influence of the nutrient fertility factor is higher than that of the pollution factor. According to the step-by-step evaluation method of the quality of the combined pollution farmland soil, an analytical result can visually show nutrient fertility characteristics of the soil of all combined pollution degrees; the scientificity of the evaluation of the quality of the combined pollution farmland soil is improved; the quality of the soil environment isimproved; and the method has important significance on the risk assessment of the polluted soil and guarantee of diet safety of people.

The invention provides a preparation method of a high-flavonoid-content tartary buckwheat product. The preparation method comprises the following steps: selecting full tartary buckwheat grains and placing into a container, adding with clean water, and soaking for 3-7h at 20-30 DEG C; uniformly scattering the soaked grains in a shallow tray paved with a wet gauze at the bottom, placing the shallow tray into an incubator at 21-25 DEG C, germinating for 12-48h under a dark condition, and spraying water into the shallow tray every 12h during the period of time to ensure the humidity; irradiating the germinated grains for 25-30min with UV-C (ultraviolet-C rays), placing into the incubator at 21-25 DEG C, and continuously germinating for 24-48h under a dark condition; and drying the processed grains at 50-60 DEG C and husking to obtain tartary buckwheat grains, or further crushing to obtain flour. The method adopts the UV-C irradiation and germination technology, and the method can remarkably improve the total flavonoid content (improved by 80% compared with the control group) of the tartary buckwheat product; and besides, the UV-C also has a sterilization function and ensures the safety of the product.

The invention discloses an ELISA method by indirect competition for testing the cadmium ion, which is to add the extracting solution of the seafood samples and the standard fluid of cadmium ion in serial consistency into the millipore of the antigen pre-peridium strips, and then add the monoclonal antibody with the function of anti-cadmium ion into each millipore, blend for incubation, add the antibody with the function of anti-mouse IgG marked by HRP and then make incubation; stop the reaction after the substrate chromogenic cadmium ion, test the absorbency of each millipore by enzyme mark instrument, and calculate the contact in the samples in accordance with the curvilinear regression equation gained from the standard control. By utilizing the gained secretory positive cells of the monoclonal antibody with the function of anti-cadmium ion, the method provided in the invention can prepare in mass production the monoclonal antibody with the function of anti-cadmium ion. The method costs low, which can fast, simply and sensitively test the content of the cadmium ion in the samples. The invention can make fast and sensitive test on the heavy metal cadmium left in the seafood like fishes and shellfishes on a large scale.

The invention belongs to the field of sewage treatment, and particularly relates to a eutrophic wastewater treatment device and method. The eutrophic wastewater treatment system comprises a water absorption, a magnetic flocculation device, a disk drive reoxygenation device and a floating bed device, wherein the water absorption device is used for extracting deposits of surface layer sediment of eutrophic wastewater and interstitial water thereof; the magnetic flocculation device is connected with the water absorption device and used for forming the eutrophic wastewater extracted by the water absorption device into magnetic floccules; one side of the disk drive reoxygenation device is connected with the magnetic flocculation device, and the other side is connected with the floating bed device; the disk drive reoxygenation device is composed of a disk mechanism, a magnetic seed recovery device and a nano microbubble generator; the disk mechanism is used for carrying out magnetic separation on the magnetic floccules to form magnetic sludge; the magnetic seed recovery device is used for recovering magnetic seeds; the nano microbubble generator is used for fusing the purified eutrophic wastewater into a gas-liquid homogeneous stream; and the floating bed device is an aquatic plant ecological floating bed.

The invention discloses a detecting method for safely and quickly identifying porcine-derived materials in food and a kit for the detecting method. The detecting method comprises the following steps of porcine specific primer designing, extraction of template DNA (deoxyribose nucleic acid), preparation of PCR (polymerase chain reaction) amplification primers and a reaction system, and PCR amplification and amplification product detection. The kit comprises a specific primer probe, a DNA extracting reagent, PCR reaction system mixed liquor, agarose powder and the like. The detecting method has the advantages that results are accurate, sensitivity is high, pork ingredients in the food can be detected quickly, illegal behaviors of counterfeit beef and mutton, sham and adulteration are completely eradicated, edible safety of Moslem food of areas inhabited by ethnic minorities such as the Xinjiang Uygur Autonomous Region and the Ningxia Hui Autonomous Region in China and peripheral Central Asia is guaranteed, and a reliable technical support is provided for social stability of China.

The invention discloses a bamboo shoot source which is characterized by comprising the following raw materials in parts by weight: 120-180 parts of sliced bamboo shoots, 12-18 parts of sugar, 50-70 parts of a thick broad-bean sauce, 20-40 parts of fermented blank bean, 180-220 parts of water, 10-20 parts of shiitake, 20-40 parts of edible oil, 5-13 parts of bruised ginger, 1-5 parts of shredded pepper and 20-30 parts of wheat batter. A processing method for the bamboo shoot source is simple and feasible; residual bamboo shoots and shiitake are utilized as the main raw materials for preparation of the bamboo shoot source, so that the bamboo shoot source has a health function when the flavor is delicious; meanwhile, the waste materials can be turned into treasure, and thus the added values of the bamboo shoot and shiitake industries are greatly improved, and the production cost of the bamboo shoot source is reduced; as the processing method is simple and feasible, industrial production is facilitated.

The invention discloses a method for preparing a whole-grain nutritional breakfast food. The method comprises the following steps: (1) preparing corn, brown rice, sticky rice, black rice, wheat germ, whole wheat, a malt extract, a peanut kernel, beans, sesame, white granulated sugar and milk powder according to the ratio; (2) preprocessing raw materials; (2-a) puffing the corn, the brown rice, the sticky rice, the black rice and the wheat germ to obtain puffed rice after mixing; (2-b) crushing the whole wheat to obtain whole wheat flour, adding the malt extract and water to the whole wheat flour, stirring to obtain slurry, tabletting and drying the slurry to obtain maize flakes; (2-c) frying the peanut kernel, the beans and the sesame, and then spraying an antioxidant solution, mixing and grinding the white granulated sugar, the peanut kernel, the beans and the sesame to obtain mixed powder; (3) mixing, evenly mixing the puffed rice, the maize flakes, the mixed powder and the milk powder. The whole-grain nutritional breakfast food prepared by the method is comprehensive and balanced in nutrition, and has good mouthfeel and food safety.

The invention discloses an environment-friendly type soft-shelled turtle expanded pellet feed. The environment-friendly type soft-shelled turtle expanded pellet feed comprises the following raw materials in parts by weight: 46-52 parts of white fish meal, 18.5-23.5 parts of wheat meal, 6-8 parts of yeast powder, 3-3.5 parts of gluten flour, 2.5-3.5 parts of rapeseed meal, 1.0-2.5 part of soybean meal, 1-2 parts of corn gluten meal, 3-5 parts of meat flavour powder, 1-2 parts of liver powder, 1.5-3.5 parts of expanded soybeans, 1-1.8 parts of monocalcium phosphate, 1.4-2.0 parts of a mineral substance premix, 0.5-1.0 part of a vitamin premix and 1-2 parts of fish oil. The invention further provides a preparation method for the feed. According to the environment-friendly type soft-shelled turtle expanded pellet feed and the preparation method disclosed by the invention, high-quality plant protein sources from the wheat meal, rapeseed meal, soybean meal, corn gluten meal and expanded soybeans are selected to replace part of the white fish meal, and the use amount of the white fish meal can be greatly reduced, and thus the cost of the environment-friendly type soft-shelled turtle expanded pellet feed disclosed by the invention is reduced; moreover, the feed is rich, balanced and comprehensive in nutrition, completely capable of meeting the rapid growth need of soft-shelled turtles and furthest reducing pollution to aquaculture water and soil, is conveniently fed, and is capable of enhancing the disease-resistant capacity of the soft-shelled turtles, and increasing the growth speed and the survival rate.

The invention discloses a raw salted blood cockle product and a preparation method thereof. The salted blood cockle product comprises clean, fresh and live blood cockles. The invention is characterized in that blood cockles with shells are soaked in seasoning liquor which is 1.5-2.5 times by weight of the blood cockles with shells for 7-10 days, and are packaged and irradiated by a 3-5KGy electron beam, thereby obtaining the raw salted blood cockle product. The preparation method comprises the following steps: cleaning the fresh and live blood cockles, soaking in the seasoning liquor, packaging the salted blood cockles containing seasoning liquor in a plastic bag, irradiating with a 3-5KGy electron beam, and refrigerating. The raw salted blood cockle product has the advantages of proper mouthfeel, good taste and long shelf life, and is safe to eat. The preparation method is simple and easy to operate.

The invention discloses an amino acid kitchen and dinning cleaner. The amino acid kitchen and dinning cleaner comprises an amino acid surfactant which is a main active component, and the weight ratio of the amino acid surfactant is 0.1-25%; the amino acid kitchen and dinning cleaner also contains the components in percentage by weight of 75-90% of water, 0.5-5% of a hydrating agent and 0.1-1% of a preservative. The amino acid kitchen and dinning cleaner disclosed by the invention has the following beneficial effects of adopting a unique amino acid surfactant stock solution formula, being free from optical brighteners, preventing the condition that chemical cleaner residues hurt human bodies and pollute environment, and being non-irritating, and free from allergic reactions. The natural amino acid surfactant with biodegradability is adopted, so that the amino acid kitchen and dinning cleaner is non-toxic, non-corrosion, pollution-free, and free from residues, can realize high-efficient quick elimination of greasy dirt on the surfaces of kitchen tablewares, and guarantees edible safety.

The invention discloses a flexible conductive film with gas sensitivity performance and application thereof and belongs to the technical field of gas sensing material preparation. The flexible conductive film is a composite film formed by stacking a two-dimensional nano material on a PET film substrate into a three-dimensional network structure, and attaching the conductive polymeric materia to the three-dimensional network structure. The two-dimensional nano material is one or more of molybdenum trioxide, tungsten trioxide, tricobalt tetroxide, tin oxide, and zinc oxide and is in the shape ofa slice, a bar, a needle, a wire or a hollow tube. The conductive polymeric material is protonated polyaniline, polypyrrole or polythiophene. According to the invention, the gas concentration of triethylamine, ethylenediamine, ammonia gas, ethanol, acetone and nitrogen dioxide at room temperature can be detected, and the high temperature monitoring defects of the inorganic nano material are overcome.

The present invention discloses a microbial culture product for preventing and controlling anthomyiidae larvae and underground nematodes. The preparation method comprises: preparing a solid fermentation mother liquor from a Lactobacillus acidophilus culture product, a Trichoderma harzianum culture product and a Paecilomyces lilacinus culture product according to a certain ratio, inoculating the fermentation mother liquor in a fermentation matrix prepared from tobacco powder, macleaya cordata, fructus xanthii, folium artemisiae argyi, castor cake, corn, bean meal and molasses according to a certain ratio, and carrying out anaerobic fermentation so as to obtain the microbial culture product. The invention further discloses the preparation method of the microbial culture product for preventing and controlling anthomyiidae larvae and underground nematodes, and a prevention and control method for anthomyiidae larvae and underground nematodes. According to the present invention, the microbial culture product is not added with any fungicides or insecticides, and is safe and efficient; and with the prevention and control method, the great damage of anthomyiidae larvae and underground nematodes on crop growth is effectively solved, the ecological environmental protection is provided, and the important significance is provided for the improvement of crop quality and the assurance of the edible safety of agricultural products.

The invention provides a carbon base fertilizer containing multiple beneficial bacteria and trace elements. The carbon base fertilizer is a fertilizer innovatively combining a biomass carbon base withmultiple beneficial bacteria and trace elements, and the fertilizer comprises the following raw materials: the trace element carbon base, an original indigenous bacterial fertilizer, weathered lignite powder, chemical fertilizer and beneficial bacteria. In addition, the carbon base fertilizer containing the beneficial bacteria and the trace elements also comprises a soil remediation microbial inoculum and an organic fertilizer decomposing agent. The trace element carbon base can improve soil hardening, supplement the content of biomass and trace elements in the soil, balance the soil temperature and promote the growth of crops, improve the yield of crops and the quality of agricultural products and ensure the edible safety of agricultural products. The original indigenous bacterial fertilizer can better enrich beneficial bacteria in the soil, can provide a living environment for other later implanted beneficial bacteria to assist other beneficial bacteria to quickly adapt to the soilenvironment and can greatly improve the survival rate of other beneficial bacteria.

A cassette-type tamper-resistant fast food box, including a bottom box and a box cover, and the bottom box and the box cover are connected in a one-way lock by a cassette and a buckle. Once the cassette is passed through the buckle and the One of the anti-loose-off card tables falls into the cassette hole of the buckle, and the cassette cannot be pulled out of the cassette hole in reverse to open the cover. In this way, during the delivery process, if the cassette is artificially pulled from the cassette insertion hole If there is a problem, there will be cracks or scratches on the buckle or cassette, so that once the fast food is delivered to the orderer, the orderer can easily find out whether anyone has opened the fast food box during delivery. If it is found that the box cover has been opened, the meal can be refunded and complaints can be processed to protect its own rights and interests. Therefore, the present invention has a reasonable structure and can better protect the interests of diners and food safety.

The present invention belongs to the technical field of pickled food processing and particularly relates to a preparation method of hams. The preparation method comprises the following steps: pretreating, pickling, washing, fermenting and storing. The method is scientific and reasonable, and the prepared hams are low in salt content, mellow in mouthfeel and fragrance, and in line with current people's demands for the ham products. At the same time, contents of nitrite and other harmful substances are controlled within national standard ranges, and the preparation method guarantees consumer's food safety.

The invention belongs to the field of processing of agriculture products, and discloses a method for drying and storing fresh peanuts for reducing produced derogation at producing areas. The method comprises the following steps: putting the fresh peanuts into multilayer drying equipment, drying the fresh peanuts for 5-6 hours until the moisture content of the peanuts is reduced to 26-21%, rinding the dried peanuts, processing the peanut kernels with a fresh keeping agent, drying the processed peanut kernels once again, and inflating, sealing and packaging the dried peanut kernels for keeping fresh. The method disclosed by the invention has the positive effects that the fresh peanuts are dried by in sectional type drying manner, the fresh peanuts are vacuumized, inflated, sealed and stored, the drying time is short, phenomena that the peanuts are hot, moldy and the like caused by the peanuts are harvested on cloudy and rainy day can be avoided, the quality of the peanuts is guaranteed, and the method belongs to a green and safe physical technology; the processing technology is simple and easy to operate, and industrialization is easy to realize.

The invention relates to a frozen meat product thawing method and device. The method includes the steps: acquiring the quality of a frozen meat product to be thawed, a first preset environmental temperature and a second preset environmental temperature; respectively determining first time needed by a first thawing stage and second time needed by a second thawing stage through a preset meat product thawing model according to the quality of the frozen meat product to be thawed, the first preset environmental temperature and the second preset environmental temperature; controlling the thawing device to thaw the frozen meat product to be thawed in a two-stage mode according to the first preset environmental temperature, the first time, the second preset environmental temperature and the second time. The requirement of a user for automatic thawing of ultralow-temperature frozen meat products can be met, thawing time can be shortened by the high-temperature thawing stage and the low-temperature thawing stage, the problem of poor food sanitation caused by excessive thawing of product surfaces is avoided, and eating safety of the products can be effectively guaranteed.