123results about How to "Normal color" patented technology

The invention discloses a method for drying rosebuds and belongs to the technical field of rosebud drying through microwave vacuum and heated air circulation. A comprehensive method for drying rosebuds through microwave vacuum and heated air circulation comprises the following steps: (1) feeding the rosebuds to a heated air circulation dryer for drying; (2) feeding the rosebuds obtained in the step (1) to a microwave vacuum drier for drying. According to the comprehensive method, the temperatures are low during the drying processes, the drying time is short, the product quality is high, meanwhile energy consumption is lowered, and the production efficiency is improved. Besides, microwaves can effectively sterilize the rosebuds and kill worms' eggs attached to the rosebuds, and are beneficial for prolonging product shelf lives.

The invention discloses a container nursery technology and a container nursery method for white bark pine seeds, and relates to the technical field of plant propagation. The container nursery method is characterized by comprising the following steps of (1) container selection, (2) treatment of seeds, (3) treatment of a matrix, (4) nursery, and (5) management of container-grown seedlings. The white bark pine seeds are subjected to standard nursery. The container nursery method for the white bark pine seeds has the advantages that the container nursery method is novel in design, and used appliances are unique in structure and are widely used. White bark pine seedlings can come out nursery after three years, white bark pines which come out nursery meets forestation specification requirements and have developed root systems, and a good root ball can be formed. Seedling trunks are upright, the color is normal, apical buds are full, and the white bark pines are not damaged mechanically and are not damaged by diseases and insects. The problem that white bark pine seeds are bred slowly in the northern region is solved. The container nursery method is low in investment, easy to operate, high in effect and high in practicality and generalization performance, and takes effect quickly.

The invention discloses a feed for feeding cage-culturing abalones, comprising fish meal, soybean meal, kelp, monocalcium phosphate, brewer's yeast, undaria pinnatifida, choline chloride, spirulina, abalone premix, wheat gluten and water. The feed is prepared by crushing, mixing, stirring, pelletizing, tabletting and the like. The culture experiments prove that the feed disclosed herein can satisfy all nutritional demands of the cage culturing process of abalones, can adapt to the cage-culturing environment, and can be stable in water for 48-72h; the cultured abalones have normal and bright body color which is close to a wild body color; by using the feed, the cultured abalones grow fast, the conversion rate of the feed is high, the cultivation benefit is good, the immunity function and anti-stimulation can be obviously enhanced, the activity is good, the amount of organic residues in excrement is effectively reduced, and the water quality of the abalone culturing area is effectively improved.

The invention discloses a processing method of convenient instant fresh-cut potato rice noodles. The processing method comprises the steps that potatoes are directly washed to be clean, peeled, diced and color-protected, partial water of the fresh-cut potatoes is removed through a centrifugal dewatering method, the treated potatoes are mixed with soaked rice and oxidation resistant starch, and a mixture of the fresh-cut potatoes, the soaked rice and the oxidation resistant starch is directly processed into instant and convenient rice noodles by regulating the feeding speed, forming temperature, rotating speed and noodle outlet plate aperture of double screw extrusion equipment. According to the processing method of the convenient instant fresh-cut potato rice noodles, nutritional ingredients and flavor in the potatoes can be reserved to the maximum extent, the technological process is simple, the preparation cost is low, and the method is suitable for large-scale industrial production, the rice noodles made through the processing method are high in potato content, rich in nutrition, normal in color and luster and smooth in appearance, the brewed rice noodle is neither too hard nor too soft, tough and chewy and has unique fragrance of the potatoes.

The invention provides a mildewproof anti-staling agent for rice, which consists of the following components by weight portion: 10 to 15 portions of sodium diacetate, 5 to 8 portions of vitamin C, 5 to 8 portions of trehalose and 1 to 2 portions of rice flavoring agent. The components are dissolved in clear water and made into 10 percent anti-staling agent solution. The mildewproof anti-staling agent for rice can be used only when the moisture content of rice is required to be below 16 percent, and is added as a polishing agent when the rice is polished. Two kilograms of the anti-staling agent solution is used for per ton of rice. In contrast to the common rice which mildews and goes bad till mid-April, the rice which is treated by use of the mildewproof anti-staling agent for rice and placed at room temperature does not mildew till mid-July, and is normal in color, odor and taste.

The invention relates to the field of processing vegetables and fruits in a fresh-keeping mode, in particular to a fresh-keeping processing technology of fast-food fresh-cutting potatoes, comprising the following steps of: selecting raw materials; cleaning; peeling; soaking in a fresh-keeping agent; dewatering; bagging; microwaving; storing in a sealing mode; particularly (1) selecting raw potatoes, cleaning, sterilizing, after peeling, keeping the shapes of the whole potatoes or cutting the potatoes into needed edible shapes; (2) placing the whole peeled potatoes or the cut fresh-cutting potatoes into a potato fresh-keeping agent, soaking 3-8 minutes, fishing out and dewatering; (3) packing the dewatered fresh-cutting potatoes by a multilayer pressed-film composite packing bag without sealing; (4) microwaving the packed fresh-cutting potatoes 1-3minutes in a microwave device and taking out to seal; and (5) storing the sealed and packed fresh-cutting potatoes at the temperature of 0-12DEG C. The fresh-keeping processing technology of the fast-food fresh-cutting potatoes can realize automatic flow operation and can generate a half-ripe potato product which has constant quality and long storage time and is convenient to eat.

The invention belongs to the technical field of unshaped refractory materials, and specifically relates to a tundish magnesia coating material prepared by using waste magnesium aluminum spinel as a raw material and a method. The waste magnesium aluminum spinel is obtained in two ways: waste magnesium aluminum spinel bricks or preformed units produced in a production process of a refractory material enterprise are prepared into the waste magnesium aluminum spinel with the particle diameter of 3-0 mm through sorting and crushing; waste magnesium aluminum spinel bricks or preformed units after use by steel mills are prepared into the waste magnesium aluminum spinel with the particle diameter of 3-0 mm through deslagging, sorting and crushing; the waste magnesium aluminum spinels obtained through the two ways are mixed according to the ratio of (1.5:1) to (1:1.5), and then are sieved to obtain waste magnesium aluminum spinel particles of two kinds of particle diameters of 3-1 mm and 1-0 mm; the waste magnesium aluminum spinel particles are taken as a raw material to be added with a binder, a plasticizer, a water reducer, an anti-knock agent, and the like at the same time to develop the tundish coating material which is stable in performance, high in strength, excellent in construction performance and low in cost; the cyclic utilization of waste refractory materials is realized; the enterprise production cost is lowered.

High-strength bacteriostatic antibacterial lithium disilicate glass ceramic and a preparation method thereof belong to the technical field of biological materials. In the prior art, a dental department all-ceramic restorative material obtained by doping Ag<+>, Zn<2+> and Cu<2+> in lithium disilicate glass ceramic does not exist. The high-strength bacteriostatic antibacterial lithium disilicate glass ceramic is characterized by preparing materials for matrix glass according to the weight percentage of the matrix glass, additionally determining the total weight of Ag2O, ZnO and CuO in the high-strength bacteriostatic antibacterial lithium disilicate glass ceramic according to the ratio of 0.1 to 8 percent of the weight of the matrix glass, and preparing the matrix glass by adopting a high temperature melting method, wherein the content of the Ag2O is larger than or equal to 0 percent but less than or equal to 2 percent, ZnO is larger than or equal to 0 percent but less than or equal to 5 percent and CuO is larger than or equal to 0 percent but less than or equal to 1 percent, wherein only the content of AgO2, ZnO and CuO is allowed to be equal to 0 at the same time; coring the prepared matrix glass at the temperature of 450 to 550 DEG C for 1.5 to 2.5 hours; performing three-step crystallization: crystallizing at the temperature of 650 to 680 DEG C for 1 to 3 hours, crystallizing at the temperature of 710 to 740 DEG C for 20 to 60 minutes, crystallizing at the temperature of 800 to 830 DEG C for 10 to 20 minutes, so as to obtain the high-strength bacteriostatic antibacterial lithium disilicate glass ceramic.

The invention discloses a beer production method, belonging to the beer production field. The invention particularly relates to a production method of healthy beer. The production method comprises the steps of wort boiling, primary fermentation and secondary fermentation. The method is characterized by adding hot water extracts of hops, honeysuckle and roses at the stage of wort boiling and adding ethanol extraction liquid of sweet osmanthus and chrysanthemum into secondary fermentation liquid of beer. The obtained beer has good nutritional value and health care effects.

The invention discloses an edible fungi medium containing orange peel dregs, which comprises a main material and an adjuvant material. The main material comprises the orange peel dregs with a mass percentage not less than 80%. The invention also discloses the preparation method of the edible fungi medium containing orange peel dregs, which comprises the following four steps: pulverizing, mixing, drying, and packaging and sterilizing. The edible fungi medium containing orange peel dregs can be used for culturing edible fungi and has high biological efficiency and low cost. The obtained edible fungi have normal color, good shape, high quality, and good flavor. Meanwhile, the large amount of wasted orange peel dregs can be fully utilized to achieve good economic and environmental benefits. The preparation method of the edible fungi medium containing orange peel dregs has the advantages of simple technique and easy generalization.

The invention discloses a production method of cyperus esculentus oil and cyperus esculentus flour. Water-soluble characteristics of water-soluble components of cyperus esculentus and properties that starch can form starch milk dispersing in water, protein is soluble in water under alkaline conditions and can be enzymed and the cyperus esculentus oil exists in cells and can break through walls to be released are utilized, the cyperus esculentus is smashed and soaked with water prior to being ground into thick liquid, protein, pectin and cellulose are sequentially enzymed to break through the walls to release the oil, an oil-water mixture is obtained after mixed materials are separated through pulp residues, and the oil-water mixture is subjected to oil-water separation to obtain cyperus esculentus crude oil and cyperus esculentus extract; the cyperus esculentus crude oil is dried and filtered to obtain the cyperus esculentus oil; the cyperus esculentus extract is subjected to heating and gelatinizing into starch, homogenizing, concentrating and spray drying to obtain the cyperus esculentus flour. The method is easy to implement, convenient in operation, low in cost, free from organic solvents, free from refining of oil, high in utilization rate of raw materials, sufficient in extraction of active ingredients and nutrient substances, good in solubility property, remarkable in healthcare function, good in taste and mechanized.

The invention discloses a method for producing whole wheat flour by performing air flash explosion technology on bran and a product thereof. The method for producing whole wheat flour by performing air flash explosion technology on bran comprises the following steps of carrying out pretreatment, namely adjusting water content of bran, performing air flash explosion treatment, and carrying out drying so as to obtain dried bran; and then, carrying out flour blending, namely crushing the dried bran, carrying out sieving, and carrying out mixing with flour so as to obtain the whole wheat flour. The technology for producing whole wheat flour by performing air flash explosion technology on bran aims to solve the problems of existing whole wheat flour, namely liable damages on gluten protein andstarch, difficult powder preparation, short storage time and the like. According to the method for producing whole wheat flour, bran is treated by utilizing air flash explosion technology, wherein airexplosion pressure is provided by an external air compressor and temperature is provided by saturated steam so that pressure and time become two independent controllable parameters; and thus, the temperature can be controlled within a relatively low range. In addition, a relatively high pressure can be simultaneously maintained and instantaneously released so as to reduce activities of lipase andlipoxygenase, and thus, shelf life of the whole wheat flour is prolonged.

The invention discloses a mixedly-boiling rapid fermentation production method of low-salt pickled cucumber, and belongs to the technical field of food processing. The method comprises the following steps: preparing a fermenting liquid: weighing the following components in percentage by weight: 3 to 5% of salt, 2 to 4% of carbohydrate, 0.1 to 0.2% of food grade calcium chloride, and 5 to 6.9% of spices, boiling the mixture for 15 to 20 minutes, cooling to the room temperature, adding 1 to 2% of liquor, 0.10 to 0.15% of pickling specific bacterium powder, and the balance being water; picking fresh and tender cucumbers, washing, draining, cutting; adding the processed cucumbers into a temperature-constant fermentation tank, adding the prepared fermenting liquid into the fermentation tank to submerge the cucumbers, and carrying out fermentation for 96 to 140 hours at a temperature of 25 to 30 DEG C so as to obtain the pickled cucumber. The fermentation is carried out by a plurality of bacteria, the technology is simple, the application range is wide, the pickled vegetable can be produced continuously, the color and luster are normal, the taste is fresh and crispy, the fermentation period of pickled vegetable is effectively reduced, the content of salt and nitrite is low, and the safety is improved.

The invention relates to a sillago sihama forsk floating extruded pellet compound feed, belonging to the technical field of fish feeds. The floating extruded pellet feed provided by the invention is prepared from the following components: a crude protein component, a carbohydrate component, a crude fat component, calcium dihydrogen phoshate, multivitamin, mineral, an alga component, a liver-protecting component and Chinese herbal medicine extract components. The sillago sihama forsk floating extruded pellet compound feed is developed on the basis of intensive study on the feeding characteristics, ecological habits and nutrition requirements of sillago sihama forsk under a natural environment condition, and can meet the feeding requirements of the sillago sihama forsk; the possibility of liver and gall diseases can be reduced; the organism immunity is improved; and the survival rate and the weight gain rate of the sillago sihama forsk are significantly improved.

The invention relates to highly-effective compound feed for juvenile abalone, which belongs to the field of aquaculture feed. The compound feed consists of imported fish meal, brewers yeast, bean meal, wakame, benthic cold water algae, flour, calcium biphosphate, choline chloride, casein and abalone premix material. The compound feed has the advantages that firstly, the sources of all the raw materials of the compound feed are stable and the nutrient content is complete, so that the compound feed can satisfy all the nutrition required by the growth of abalone; secondly, the ingredients of the feed are matched in a balanced way, so as to be favorable for balanced digestion and absorption, growth and ingredient conversion of the abalone, organic excrement residue is in a small amount and leaves small influence to the bottom material; thirdly, the bred abalone has normal and brilliant color which is close to the natural body color; fourthly, the immune function and the anti-stress capability of the abalone can be obviously enhanced, and the liveliness of the abalone is good.

The present invention discloses a pelteobagrus fulvidraco body color improving environmentally protective and puffed compound feed which consists of the following composition in mass percentages: 15-25% of steamed fish meal, 5-15% of meat and bone meal, 15-25% of peeled soybean meal, 5-15% of double-low rapeseed meal, 5-15% of corn gluten meal, 1-3% of laminaria japonica powder, 2-5% of brewer's yeast powder, 20-30% of high-gluten flour, 4-6% of soybean oil, 0.5-1.0% of choline chloride, 1.0-2.0% of multi-vitamins, 0.5-1.5% of multi-minerals, 1.0-2.0% of calcium dihydrogen phosphate, 0.2-0.4% of vitamin A, 0.1-0.3% of vitamin C, 0.5-1.0% of tagetes erecta extract Y, 0.4-1.0% of vitamin E, and 0.2-0.4% of de-mold agent. The puffed feed can meet the full nutritional requirements of pelteobagrus fulvidraco adult fish farming, is good in attractant, can promote the rapid growth of pelteobagrus fulvidraco after being fed, is low in feed conversion ratio, can maintain or quickly restore normal body color of pelteobagrus fulvidraco, and has significant economic and environmental benefits.

The invention discloses a seedling growing method for ammodendron argenteum. The method comprises the following steps that of 1 seedling growing land selection and treatment, 2 seed selection and treatment, 3 sowing treatment, 4 seedling stage management and 5 seedling outplanting. The method has the advantages that the seedling growing method for the rare or endangered species, namely, ammodendron argenteum is provided, the provided seedling growing mode is high in operability, seedlings emerge orderly, the survival rate is high in the process of transplanting and foresting, and the seedlings are good in growth vigor, normal in color and free of mechanical damage and plant diseases and insect pests.

The present invention relates to preservation and is especially the freshness keeping method for cooked bamboo shoots. The method includes the following steps: boiling, quick freezing and eliminating sheath of bamboo shoots; rinsing with clear water and regulating pH value with L-glutamine or L-glutamic acid to 4.6-5; grading and packing into freshness keeping container; adding tea polyphenol, L-glutamine or L-glutamic acid, and salt in the weight ratio of 1.5-3 to 2.5-6.5 to 91-96; adding bacteria-free water to soak bamboo shoots; and deflating and sealing for preservation. Bamboo shoots thus processed can be kept for 6 months without obvious change in color, smell and tissue. The present invention can regulate the marketable season of bamboo shoots and increase the economic utility.

The invention discloses an expandable polystyrene resin bead with high color strength and high light fastness and a preparation process thereof. The expandable polystyrene resin bead with high color strength and high light fastness is characterized in that resin beads prepared by the preparation process are uniform in particle size and have bright and controllable color, high color strength and high light fastness, and foamed products made of the resin beads are uniform in color and cell density and have structures with closed cells which are high in strength. The preparation process includes steps of preparing color paste with pigment particle size about 1 micrometer by dispersing and grinding techniques, then obtaining monomers containing precisely dispersed organic pigment with high color strength by phase transformation of the color paste, and finally initiating the colored monomers to complete polymerization. The expandable polystyrene resin bead with high color strength and high light fastness and the preparation process thereof have the advantages that the pigment prepared by the preparation process is fine and uniform in particle size and easy to develop, can disperse among the monomers precisely, and can be compatible with foaming agents and polymers well; and further, products with a small quantity of the pigment have satisfied brilliance and color strength, a polymerized system is stable and controllable without obvious inhibition, and reactions can be completed within a normal time.

The invention relates to a roxburgh rose seedling raising method. The method comprises the steps that high-quality roxburgh rose seeds are selected, the medicine seed soaking, the stage temperature change, the stratifcation treatment and the manual accelerating germination are carried out, roxburgh rose seeds subjected to accelerating germination are sowed before and after 5 to 10 days when winter begins, and the seed consumption quantity is 15kg per mu; after the sowing is completed, 0.5 to 1 cm of thick and fine sandy soil is covered until no seeds are seen, bamboo splints are used for building a small tunnel at the ridge surface, a sunshade net with 50 percent to 75 percent of shading rate and a mulching film are covered, and the film and the sunshade net are uncovered after the seedling emergence; and once irrigation is respectively carried out after the film uncovering, at the end of December and after the temporary planting at the beginning of April in the seedling period, and 800kg per mu to 1000kg per mu of clear liquid dung is applied at each time. After the seedling raising method is adopted, the large-field germination rate of roxburgh rose seeds is improved from 50 to 60 percent to 70 to 80 percent, the seed quantity for seedling breeding is reduced by more than 30 percent, the obtained seedlings are regular and uniform, and the finished product rate of the cultured commercial seedlings reaches about 90 percent.

An antistaling agent for cooked bamboo shoot is prepared from sodium D-isoascorbate (76-89 wt.%), potassium sorbate or citric acid (10-20 wt.%), and sodium pyrophosphate (1-4 wt.%). Its application method includes immersing the cooked bamboo shoot in clean water, adding said antistaling agent and edible salt, vacuumizing and sealing. Its advantages are long antistaling period (6 months), and improving quality of bamboo sheet.

The invention discloses a fresh keeping method for chilled fresh cut grass carp and belongs to the technical field of fresh keeping. The fresh keeping method provided by the invention comprises the following steps: (1), bacteria reducing treatment: soaking fish slices for 5 min through a 3 g / l sodium hypochlorite solution according to the material-solution volume ratio of 1:5; washing for 30 S with sterile water and draining for 2 min so as to obtain bacteria-reduced fish slices; (2), adding epsilon-polylysine in the bacteria-reduced fish slices obtained in the step (1), wherein the mass ratio of the fish slices to epsilon-polylysine is 10:(1-10); (3), carrying out modified atmosphere packaging on the fish slices processed in the step (2) for storage by mixed gas comprising 50% of CO2 and 50% of N2. According to the fresh keeping method provided by the invention, the shelf life of the obtained product can reach 13-15 days, and is prolonged by 200% or above; the obtained chilled fresh cut fish meat products are normal in color and have an inherent flavor of fish meat, and muscle sections are glossy.

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 relates to a high-efficiency formulated feed used for juvenile sea cucumber. The feed is composed of soybean meal, artemia, fish meal, squid meal, sargassum thunbergii, gulfweed, pinnatifid undaria, calcium dihydrogen phosphate, probiotics, mussel flesh, spiral algae, chloride choline, shell powder, and a sea cucumber premix. The raw materials are well mixed according to a certain ratio; and the mixture is crushed and packaged, such that the high-efficiency formulated feed used for juvenile sea cucumber is prepared. The feed has the advantages of comprehensive nutrients and balanced component formulation. With the feed, juvenile sea cucumber balanced digestion and absorption, and growth and transformation can be promoted. A feed conversion rate is high.

The invention discloses a coating preservation method for meat. The method includes the following steps: (1) adding distilled water to disperse protein uniformly, then adding chitosan with the same weight of protein, stirring, reacting at 75 DEG C for 60-80 minutes, adding glycerin with the weight being one-second of the weight of the protein, reacting at 60 DEG C for 15-30 minutes, cooling, adding phytic acid, and stirring to obtain the coating preservation solution; (2) placing the meat in the coating preservation solution for soaking, and carrying out vacuumizing and vacuum breaking intermittently during the soaking. By using the method provided by the invention, the shelf life of the iced fresh meat can reach 38 days or above, and that of the cold fresh meat can reach 22 days or above; in addition, the color of the meat is normal, the weight loss is smaller than 2%; chitosan is used for grafting the soybean protein, which improves the hydrophilicity of the soybean protein and the compatibility between the soybean protein and phytic acid and enables the film-forming property to be greatly increased and the fresh-keeping effect to be better; during the meat preservation coating process, the vacuum pulsation is used to intensify the mass transfer, which enables the meat to adsorb the coating preservation solution to a maximum extent and improves the firmness and reliability of the coating.

The invention relates to a processing method for yellow wine, specifically a method for preparing yellow wine from husked millet as raw material, comprising selecting husked millet having normal color and no peculiar smell or milden and rot, washing with water to remove impurity on surface of husked millet, adding 2.1-2.3 times of water, soaking, adding proper amount of citric acid adjusting pH to 4, soaking at 25-30 DEG C. for 8-12h, adding saccharifying enzyme 150-180 units per gram of raw materials, inoculating with yellow wine active dry yeast as 0.1%-0.15% of the volume of the soaking liquid, performing primary fermentation in a closed condition at 20-24 DEG C. for 6-7 days while stirring twice in the morning and evening every day, performing secondary fermentation at 13-15 DEG C. for 2-3 months, squeezing and clarifying, bottling, sterilizing at 70-75 DEG C. for 30-40min, and storing 8-12 months to obtain the final product.

The invention relates to a method for preserving fruits, in particular to a method for preserving Chinese dates which solves the problem of short preserving time existed in the existing Chinese date preserving technology and includes the following steps: 1. Preparing preserving liquid, preparing the preserving liquid by adding white sugar in a sodium chloride liquid of 0.5 to 1 percent according to a proportion of adding 20 to 80g by per ml and sterilizing, 2. Using the prepared preserving liquid to treat fresh Chinese dates, crack Chinese dates and fade Chinese dates, 3. Freezing the treated Chinese dates under a temperature of 5 to 20 DEG C below zero for 3 to 6 hours. The preserving period for various Chinese dates after being treated by the invention can be prolonged greatly and the Chinese dates in the first year can at least be ensured to preserve good fresh grade and taste before the Chinese dates are mature in the next year.

The invention relates to feed, in particular to prawn feed. The prawn feed is prepared from raw materials in parts by weight as follows: 5-8 parts of soybean meal, 2-3 parts of fish meal, 5-7 parts of shrimp meal, 1-5 parts of cuttlefish meal, 1-5 parts of leftover bits of scallop, 2-3 parts of monocalcium phosphate, 2-3 parts of fermented protein powder, 20-30 parts of Selaginella doederleinii, 1-2 parts of probiotics, 1-5 parts of mussel meat, 0.2-0.3 parts of choline chloride, 4-5 parts of shell powder, 8-10 parts of marine mud, 8-10 parts of corn flour, 3-4 parts of undaria pinnatifida powder and 0.02-0.05 parts of theaflavin. The prawn feed has the advantages as follows: by means of rational proportion, nutrition is comprehensive, digestive absorption of prawns is good, the prawns grow fast, and feed conversion rate is high. The feed has a stable raw material source, contains comprehensive nutritional ingredients and can meet all nutritional requirements of prawn growth; all components of the feed coordinate in a balanced manner and are beneficial to balanced digestive absorption and growth transformation of the prawns, few organic residues are contained in excreta, and influence on a substrate is small; the color of the cultured prawns is normal and is close to body color of wild prawns; immune function and anti-stress capability of the prawns can be remarkably enhanced.