142results about How to "Reduce microbial content" patented technology

The invention relates to freely-blended instant substitutional tea and a making method thereof. The substitutional tea is composed of one or more natural plant essences. A making method of the natural plant essences includes the following steps that S1, effective portions of natural plants are smashed to be 60-200 mesh, and water is added for soaking; S2, material liquid obtained in S1 is subjected to homogeneous wall-breaking extraction at the temperature of 30-55 DEG C, filtering for impurity removal is carried out, and filtrate is obtained for use; S3, the filtrate obtained in S2 is subjected to filtering separation sequentially through a micro-filtration membrane, an ultrafiltration membrane and a nanofiltration membrane, and effective ingredient enriched products are obtained; S4, the enriched products obtained in S3 are subjected to vacuum drying and smashed to be 50-100 mesh, and the natural plant essences are obtained. Each single plant of traditional substitutional tea is extracted into an instant powder product, the size of the products is effectively reduced, the products are conveniently carried by a customer, and the customer can freely blend the products according to the taste and health maintenance requirement of the customer.

The invention discloses a preparation method of a liquid acidic pectinase, belonging to the technical field of enzyme preparations. The preparation method of the liquid acidic pectinase comprises the steps of treating a fermented crude enzyme solution and a blended concentrated solution at normal temperature by using a high-voltage pulsed electric field, and adding a pectin decomposer, a Chinese herb extract, modified dietary fibers and other natural plant raw materials in a blending process, wherein chemical preservatives do not need to be added, and low-temperature treatment is not needed; and then, degerming, filtering, and carrying out sterile filling to obtain the liquid acidic pectinase with stability and long shelf life. Experiments prove that the total bacterial count is 68-102CFU/mL if the liquid acidic pectinase prepared by using the preparation method is stored at room temperature for 12 months; and the enzyme activity loss ratios are respectively 1-1.4% and 0.5-1.1% if the liquid acidic pectinase is stored at 40 DEG C and 0 DEG C for 12 months. The preparation method is simple in process, convenient to operate, energy-saving and environment-friendly.

The invention discloses a superhigh-pressure fresh keeping method for fresh rosa roxburghii. The superhigh-pressure fresh keeping method comprises the following steps of cleaning the rosa roxburghii: cleaning the rosa roxburghii with ultrasound high-pressure water cleaning equipment for 15-25 minutes; removing stabs of the rosa roxburghii: removing the external stabs of the rosa roxburghii fruits with a rotary mill; weighing the rosa roxburghii and loading the rosa roxburghii in bags: based on the unit of 3-8 kilograms of the rosa roxburghii in each bag, loading the rosa roxburghii in HDPE bags; injecting water for vacuum sealing: injecting reverse osmosis water to the HDPE bags loaded with the rosa roxburghii, and performing vacuum sealing to form rosa roxburghii water bags; using a superhigh-pressure processing technique, putting the rosa roxburghii water bags in a processing container of a high-pressure processing machine, and applying stationary liquid pressure of 100-800MPa, wherein the processing time is 5-10 minutes; and taking out the processed rosa roxburghii water bags, and preserving the rosa roxburghii water bags under normal atmospheric temperature. According to the superhigh-pressure fresh keeping method disclosed by the invention, the original flavor and the nutrient value can be maintained, the refrigeration and circulation shelf life can be prolonged, and the superhigh-pressure fresh keeping method has the same food safety grade as a conventional thermization method, and maintains the characteristics of flavor and the like.

The invention provides a method for treating coking biochemical effluent by microwave-oxidation-coagulation technology, which comprises the following steps of: A, adding a mixed reagent consisting of H2O2 and Fe2+ into the coking biochemical effluent until the mass concentration of hydrogen peroxide in water is between 0.01 and 1 percent, and controlling the pH to between 2.0 to 6.0; B, delivering the mixed liquid into an industrial microwave oven for processing for 5 to 60s; C, regulating the pH value of the mixed liquid to between 6.0 and 6.5 or 7.5 and 8.5, and carrying out oxidation treatment for 1 to 4 hours under an aeration condition that the aeration rate is 10 to 40m<3>/h; D, adding a coagulant into the liquid until the mass concentration of the coagulant in the liquid is betweenone millionth and one hundred thousandth; E, precipitating and separating; F, filtrating the liquid to obtain process effluent for recycling; and G, collecting sludge, separating the liquid from the sludge; and returning the liquid to the step D, and filter-pressing the sludge to obtain sludge cakes. The method realizes recycling, does not discharge sewage, and effectively solves the problem thatpresent coking sewage is difficult to treat and to recycle.

The invention provides a rapid fermentation process for preparing fermented soybeans by pure strains, which comprises the following steps: cooking and curing the soaked soybeans with a water level higher than the soaked beans; inoculating the pure mucor strains after intermediate culture; fermenting at constant temperature and humidity for 48-72 hours to obtain mucor blank; adding salt and slicedginger; compacting, sealing and fermenting in the case of voidage being less than 5%; dehydrating with circulating hot air; frying with vegetable oil at the temperature of 170-190 DEG C for 30-50 seconds; mixing with blending materials timely; hot-filling at 85-90 DEG C; pressing tightly so that the oil level is 1-1.5cm higher than the surface of the beans; and carrying out vacuum sealing to finally obtain the instant fermented soybeans after being cooled. The process provided by the invention has the advantages of scientific process design, short process cycle, good color stability, continuous industrial production, controllable process, stable quality and no addition of preservative and anti-staling agent and color fixative, and can obtain the fermented soybeans which are significantly different from the products of other types, thus providing a feasible method for safely and conveniently producing fermented soybean products.

The invention provides a preparation method of bitter-taste ganoderma lucidum spore powder, relating to the field of medicines or health products. The preparation method comprises the steps of removing impurities from ganoderma lucidum spores, and carrying out ice-bath and heating extraction, microfiltration membrane filtration, drying sterilization and wall breakage, so as to obtain the ganodermalucidum spore powder. According to the preparation method, by combining repeated impurity removal, shrunken shell filtration and wall breakage after extraction, the content of bitter-taste substancesin the ganoderma lucidum spore powder are effectively increased; ganoderma lucidum total triterpene in the ganoderma lucidum spores is taken as a representative of the bitter-taste substances, and the content of the ganoderma lucidum total triterpene can reach 5%-8%; and meanwhile, the bitter-taste substances in the ganoderma lucidum spore powder can be increased, and the content of ganoderan canreach 6%-10%.

The invention discloses a preserving agent for salted yolk and a processing method of the salted yolk. The preserving agent of the salted yolk consists of the following raw materials in parts by weight of 55-65 parts of salt, 80-85 parts of sodium alginate, 130-135 parts of sodium dihydrogen phosphate, 10-15 parts of Baijiu, and 1-2 parts of potassium sorbate. The processing method of the salted yolk is characterized by comprising the following steps of enabling the yolk to be immersed in the preserving agent, and performing preserving at 20-30 DEG for 48-72h; and placing the preserved yolk inthe place of 30-40 DEG C for 1-1.5h, taking out the baked yolk, uniformly applying the edible oil onto the taken yolk, placing the applied yolk in the pace of 45-55 DEG C for baking for 0.25-0.5h, and performing sterilizing, so that the salted yolk is obtained. According to the preserving agent disclosed by the invention, the probability that the surface of the salted yolk is cracked can be effectively reduced, the condition that salted yolk is stuck to form blocks can be avoided, and the yolk is beautiful and bright in color.

The invention provides a lithium alginate production process.The lithium alginate production process includes steps: (1) performing alkali digestion of brown algae to prepare alginic acid; (2) adding the alginic acid and a certain quantity of a composite lithium salt into a neutralization reactor to react for 50-70min until the alginic acid and the composite lithium salts are completely neutralized to form lithium alginate, wherein neutralization reaction includes solid-phase neutralization reaction and liquid-phase neutralization reaction with ethyl alcohol serving as a medium; consumption of the composite lithium salt is 7-15% of that of the alginic acid; the composite lithium salt is composed of lithium carbonate and lithium acetate, and a ratio of the lithium carbonate to the lithium acetate is 80-90:10-20; (3) performing centrifuging, plunger extruding granulation, drying and grinding to obtain lithium alginate in required meshes.The lithium alginate prepared according to the process is 100-2000mPa.s in viscosity, 40-320 in mesh number, 6.0-8.0 in pH value, smaller than or equal to 15.0% in moisture content and 14-28% in ash content.In addition, the lithium alginate production process can be implemented under the condition of existing sodium alginate solid-phase and liquid-phase neutralization production technology.

The invention discloses a preparation method of liquid acidic pectinase with strong stability, and belongs to the technical field of preparation of enzyme preparations. The preparation method of the liquid acidic pectinase with strong stability does not need addition of a chemical preservative and low-temperature treatment, and the liquid acidic pectinase with strong stability, which is stable and has a relatively long quality guarantee period, can be obtained by fermenting a crude enzyme solution and blending a concentrated solution by adopting a high-voltage pulse electric field at normal temperature, adding natural plant raw materials including a pectin decomposed product, a Chinese medicinal herb extract, modified dietary fibers and the like during blending, and then performing aseptic filtration and sterile filling. Experiments prove that the liquid acidic pectinase with strong stability, prepared by the method disclosed by the invention, has the total number of bacterial colonies of 75-110CFU/mL after being stored for 12 months at room temperature; and the enzyme activity loss rates of the liquid acidic pectinase which is stored for 12 months at 40 DEG C and 0 DEG C are 1.2-1.4% and 0.5-1.1% respectively.

The invention discloses an air sterilization device and sterilization method. The air sterilization device comprises a machine housing, a centrifugal fan, a filter rolling shaft and a water tank, wherein the centrifugal fan, the filter rolling shaft and the water tank are all arranged in the machine housing, the water tank is located at the bottom of the machine housing, the filter rolling shaft is installed above the water tank, the centrifugal fan is installed at the upper portion of the machine housing, the top face of the machine housing is provided with an air inlet, a filter screen is arranged between the air inlet and the centrifugal fan, the side face of the upper portion of the machine housing is provided with an air outlet and a water inlet, the lower portion of the machine housing is provided with a transparent water level observing window, and the bottom is provided with a water outlet; an air sterilization agent is contained in the water tank, and the filter rolling shaftis provided with a plurality of grooves. The air sterilization device achieves air sterilization, plays an air purifying effect, can also eliminate peculiar smell in air, increases indoor humidity, reduces influenza occurrence rate, is quick and convenient to operate, good in sterilization effect, simple in use and convenient to popularize and use.

The invention provides production technology of magnesium alginate. The production technology comprises the following steps: (1) preparing alginic acid from brown algae via alkali digestion; (2) adding alginic acid and a certain amount of composite magnesium salt into a reactor, and reacting for 50-75 min till alginic acid and composite magnesium salt are neutralized and are completely converted to magnesium alginate, wherein the neutralization reaction comprises a solid-phase neutralization reaction and a liquid-phase neutralization reaction taking alcohol as a medium; (3) using the composite magnesium salt with the amount being 7-15% of that of alginic acid; (4) taking magnesium chloride and basic magnesium salt, the ratio of which is 10-20:80-90, to prepare the composite magnesium salt, wherein (5) the basic magnesium salt comprises one or more of magnesium bicarbonate, magnesium hydroxide, magnesium carbonate, magnesium oxide, magnesium acetate, and magnesium silicate; and (6) performing centrifugation, plunger extruding granulation, drying, and pulverizing to prepare magnesium alginate with a required mesh size. Magnesium alginate prepared in the invention has the viscosity in a range of 100-2000 mPa.s, the mesh size in a range of 40-320 mesh, the pH value in a range of 6.0-8.0, a water content no more than 15.0%, and an ash content in a range of 14-28%. The production technology can be realized in a condition of conventional solid-phase, and liquid-phase neutralization production technology of algin.

The invention provides a detection method of a fingerprint spectrum of a Zhibai Dihuang pill. The invention further provides an application of the fingerprint spectrum detection method of the Zhibai Dihuang pill in quality detection of components in the Zhibai Dihuang pill and a quality detection method of the Zhibai Dihuang pill. The invention further provides a method for determining the contentof the five components in the Zhibai Dihuang pill. The invention further provides a screening method of the fingerprint spectrums of the multiple medicinal materials in the Zhibai Dihuang pill. According to the detection method and application of the fingerprint spectrum of the Zhibai Dihuang pill, the high performance liquid fingerprint spectrum of the Zhibai Dihuang pill is established, five chemical components in the Zhibai Dihuang pill can be quantitatively analyzed, affiliation confirmation is carried out on chromatographic peaks of single medicinal materials in the Zhibai Dihuang pill,effective monitoring can be carried out from a raw material source, the quality of raw medicinal materials is strictly controlled, and the amount of effective components in the Zhibai Dihuang pill isensured to be relatively stable, so that the safety and effectiveness of clinical medication are ensured.

The invention discloses a processing method for producing high-end green tea from a Shiqian moss tea variety. The processing method comprises the following steps: withering, fixation, fresh leaf tedding, tea strip tidying and trimming, step-by-step drying, screening, air classification, blending, microwave drying aroma enhancement and finished product packaging. By controlling the temperature andtime in the process steps and the parameters of moisture and the like in processed tea leaves, most organic matters in the tea leaves are preserved, so that the quality of the tea leaves is remarkablyimproved.

The invention discloses a breathing mask with filtering and purifying functions. The breathing mask comprises a face guard and a canister. The face guard comprises a guard body, eye windows, an interphone, a breathing valve and a fastener. The breathing mask is characterized by further comprising a double-layer exhalation valve or a multi-layer exhalation valve, and the double-layer exhalation valve or the multi-layer exhalation valve is composed of two or more exhalation valve blocks which are connected and combined in series; grids are arranged between the exhalation valve blocks as well as between the exhalation valve blocks and the guard body; an air inlet is formed in the bottom of the guard body; the air inlet is connected with the canister through an air guiding pipe; the canister comprises a first adsorption assembly, a catalyze assembly and a second adsorption assembly which are stacked in the front-back direction. By means of catalysts, benzene, methylbenzene, xylene, ethylbenzene, styrene, formaldehyde, acetaldehyde and acrolein in the air in a building are removed till the concentration is below 0.01 milligram/m<3>, and meanwhile the content of microorganisms in recycled air is remarkably reduced.

The invention belongs to the technical field of food processing, and particularly relates to a production method of instant dried small shrimps, wherein the production method comprises the following steps: step one, cleaning small shrimps; step two, soaking and removing impurities; step three, carrying out centrifugal dehydration; step four, seasoning the small shrimps; step five, cooking; six step, drying; and step seven, packaging. According to the production method of the instant dried small shrimps, the obtained instant dried small shrimps have the advantages of high quality, good taste, excellent color and luster, and easy chewing; volatile salt-based nitrogen is effectively removed, and the removal rate is 80% or more; with adopting of a new microwave spouting drying technology, energy is saved by 70% or more than that of general hot wind drying; the product has extremely low microbial content, the total number of bacteria is 5000 cfu/g or less, and no pathogenic bacteria are detected. The preparation method is simple, and is more energy saving and is more prone to realization of productization production compared with conventional drying.

The invention discloses a processing method of slightly lyophilized Chinese wolfberries. The method comprises the following steps of soaking, cleaning, freeze-drying protection and freeze-drying. Themethod mainly relates to the following steps in detail: adding a freeze-drying protective agent containing 1-10% w/w of trehalose and 0.5-1% w/w of calcium chloride to washed Chinese wolfberries; uniformly spraying the protective agent on the surface of the Chinese wolfberries by adopting atomization spray heads; putting the Chinese wolfberries into a freeze-drying machine, and starting vacuumizing under the condition of no heating and no freezing; keeping a negative pressure for 10 to 30 minutes as the pressure drops to 60 Pa; and maintaining a vacuum degree for 2-5h. according to the lyophilized fresh Chinese wolfberry fruits produced by adopting a vacuum freeze-drying technology, the method maintains the original natural state of fresh Chinese wolfberry fruits, and the color, the appearance shape and the appearance and mouth feel after rehydration of the lyophilized Chinese wolfberry fruits are basically the same as that of the picked fresh Chinese wolfberry fruits. The method maintains the integrity and stiffness of dried Chinese wolfberry cells, and reduces the production cost of products, and the products are easier to preserve in marketing sale process.

The invention discloses a preparation method for a coated paper coating material and coated paper. The preparation method for the coated paper coating material comprises the steps of carrying out treatment on pigments by using a long-acting anticorrosive fungicide, and mixing the treated pigments with a tackifier and additives, thereby obtaining the coated paper coating material. The pigment content accounts for 80% to 90% or more the total weight of the coating material formula, the pigments are treated through the fungicide so as to lower the microbe content of the pigments, and thus the problem of deterioration caused by too high microbe content of raw materials can be effectively avoided; and the microbe content of the final coating material can be effectively controlled on the basis of reducing the use level of the fungicide for treating the coating material.