75 results about "Astilbic acid" patented technology

The invention provides a fruit and vegetable fresh-keeping agent, a preparation method and application thereof. The fresh-keeping agent uses burdock fructo-oligosaccharides as main composition and combines aqueous solution prepared by chitosan, ascorbic acid, salicylic acid, calcium chloride and acetic acid to treat fruit and vegetable, so that a fruit and vegetable system can obtain the improved resistance, and a hyaloplasmic fresh-keeping membrane is formed on the surface of the fruit and the vegetable so as to effectively inhibit the growth of microbe, prevent moisture dissipation and contact between the fruit and the vegetable and air, and inhibit breath and transpiration, thereby greatly deferring aging of the fruit and the vegetable, and inhibiting putridity, mildew and rot. The fruit and vegetable fresh-keeping agent is applicable to storage and fresh-keeping for various fruits and vegetables with long fresh-keeping period and small consumption of nutrient materials.

The invention discloses whitening and freckle-removing cream which comprises water, hydrogenated polydecene, butanediol, glycerol, ethylhexyl palmitate, isopropyl palmitate, ceteareth-25, ceteareth-6,C12-15 alcohol-benzene formic ester, cetostearyl alcohol, polydimethylsiloxane, magnesium ascorbyl phosphate, simmondsia chinensis seed oil, preservatives, tocopheryl acetate, arbutin, xanthan gum, bisabolol, allantoin, essence, EDTA (ethylene diamine tetraacetic acid) disodium, glycyrrhiza glabra root extracts, sodium hyaluronate and citric acid. Whitening active components such as the glycyrrhiza glabra root extracts, the magnesium ascorbyl phosphate and the arbutin are added in a formula, the whitening and freckle-removing cream can penetrate into skin bottoms, melanogenesis is continuously inhibited, melanin decomposition is accelerated, skins are thoroughly whitened from inside to outside, and rapid whitening and freckle-removing effects are achieved. The magnesium ascorbyl phosphateand vitamin E achieve synergistic effects, and the whitening and freckle-removing effects are better.

The invention relates to a fresh-keeping method for lotus root, and especially relates to a fresh-keeping method for performing fresh-keeping processing on fresh-cut lotus root slices by using a composite fresh-keeping agent prepared from multiple reagents. The method comprises: selecting onion, squeezing juice, mixing with phytic acid, disodium ethylene diamine tetraacetate, ascorbic acid, L-cysteine and the like, adjusting pH value with citric acid to obtain the composite fresh-keeping agent; immersing the pre-processed lotus root slices in the composite fresh-keeping agent for fresh-keeping processing; and finally employing vacuum package, and placing at appropriate conditions for refrigeration. Due to the fact that the composite fresh-keeping agent prepared from the multiple reagents is utilized as the fresh-keeping agent of the fresh-cut lotus root slices, the fresh-keeping effect is good, and the fresh-keeping period reaches five months or more, so that the problems such as browning, hardness reducing, weight decreasing and the like during storage of the fresh lotus root slices are solved. Additionally, the fresh-keeping method has the advantages of being simple in processing, low in cost, green, environment-friendly, convenient and the like.

A method for preparing the meat of Hami melon includes such steps as providing fresh Hami melon, washing, disinfecting peeling, slicing immersing in the solution of edible citric acid and the solution of ascorbic acid for 15-30 min in order to protect color, quick freezing vacuum freeze drying and packing.

The invention discloses a honey peach composite preservative. The preservative comprises the following components by weight percent: 0.03-0.12% of citric acid, 0.2-0.6% of calcium chloride, 0.03-0.12% of ascorbic acid, 0.002-0.006% of salicylic acid, 0.01-0.03% of succinic acid, 0.03-0.1% of sodium tetraborate and the balance water. The composite preservative can be used to obviously reduce the rotting rate and weight-loss ratio of fruits and obviously inhibit the reduction of the hardness of fruits, has good preservation effect and is applicable to popularization and application.

The invention relates to a deep cleansing and moisturizing attached type mask containing a taxuscanadensis extract. The deep cleansing and moisturizing attached type mask containing the taxuscanadensis extract consists of the following 41 ingredients: the taxuscanadensis extract, water, glycerine, butanediol, polyethylene glycol-400, glycine betaine, hyaluronic acid, oat beta-glucan, ascorbic acid, tea polyphenols, sodium hyaluronate, a tremella sporocarp extract, a chondrus crispus extract, a ginseng root extract, a hydrolyzed adansonia digitata extract, a centella asiatica extract, a grape seed extract, aloe vera gel, hydrolytic collagen, serine, histidine, aspartic acid, alanine, xanthan, methyl hydroxybenzoate, carbomer, trehalose, EDTA (ethylene diamine tetraacetic acid) disodium, hydroxypropyl methyl celluloses, allantoin, sorbitol, ethylhexylglycerin, polyquaternary salt-10, ethoxy urea, saualane, PEG-40 hydrogenated castor oil, forulic acid, resveratrol, dipotassium glycyrrhizinate, triethanolamine and phenoxyethanol. The taxuscanadensis extract in the attached type mask can remove free radicals, and meanwhile, effects of thinning pores, brightening skin and moisturizing skin can be achieved.

The invention relates to a blueberry and pu'er herbal tea beverage production technology and a product thereof, which belong to the technical field of food processing. The blueberry and pu'er herbal tea beverage is prepared by extracting, filtering, mixing, centrifuging, ultra-filtering, sterilizing, filling, cooling and packaging blueberry leaves and matured pu'er tea leaves, which serve as main raw materials, and chrysanthemum, mesona blume, frangipane, buzhaye, semen cassiae, honeysuckle, white sugar, malic acid, ascorbic acid, citric acid, sodium citrate and potassium sorbate which serve as auxiliary materials. The herbal tea has a unique flavor, tastes mellow, sweet and fragrant, is cool but not bitter and has the effects of reducing the blood fat and the blood pressure, clearing the heat, expelling the toxin, eliminating dampness, relieving dyspepsia, producing saliva and slaking thirst; the production technology is simple, and the production cost is low; and therefore, the blueberry and pu'er herbal tea beverage has good industrial prospect.

The invention relates to nutritional compound oil with an anti-oxidation function. The nutritional compound oil consists of four or more of the following raw materials in parts by weight: 15-35 parts of soybean oil, 2-10 parts of corn oil, 2-5 parts of high-oleic acid sunflower seed oil, 50-65 parts of low-erucic acid rapeseed oil, 2-8 parts of coconut oil, 1-5 parts of linseed oil, 1-5 parts of walnut oil and 1-3 parts of black sesame oil; meanwhile, 0.01-0.02 part of L-ascorbyl palmitate and / or 0.03-0.05 part of vitamin E are added. According to the nutritional compound oil provided by the invention, by compounding multiple kinds of edible oil, the requirements of infants for the nutritional substances such as polyunsaturated fatty acids and vitamins are met, the nutrients are widely available, the processing process is simple, the production cost is low, the nutritional compound oil is convenient to eat, the content of trans-fatty acid components is low, and the fatty acids of omega-3 system and omega-6 system at a reasonable proportion are absorbed by a human body in a balanced manner.

The present invention discloses tea tablet and its making process. The making process includes the following steps: extracting tea to obtain tea extractum powder; mixing tea extractum powder, sweetener, antioxidant, flavor agent and stuffing in certain weight proportion; pelletizing; stoving; adding lubricant and tabletting. The extracted tea extractum powder contains the scented components, theocin, caffeine, tea polyphenol, tea polysaccharide, trace elements, vitamins and other components. The additives include sweetener sorbic alcohol, xylitol or isomaltose alcohol; antioxidant ascorbic acid, isoascorbic acid or their salt; the flavor agent rose essence, lily essence, lemon essence or tea essence; stuffing starch, pre-gelatinized starch or dextrin; and lubricant magnesium stearate.

The invention discloses a formula of an artificial feed for dichocrocis punctiferalis, and a manufacturing method of the artificial feed and belongs to the field of artificial feeds for insects. The feed comprises Chinese chestnut powder, maize meal, peach powder, soybean flour, beer yeast powder, multivita-glucose, cholesterol, casein, ascorbic acid, erythromycin, agar powder, methylparaben, methyl parahydroxybenzoats and water. The invention further provides a manufacturing method of the artificial feed for dichocrocis punctiferalis. According to the artificial feed, the Chinese chestnut powder, the maize meal, the soybean flour, the beer yeast powder and the like are added and are in coordination with a plurality of trace elements, so that on the premise of improving the survival rate, the fecundity and the like of dichocrocis punctiferalis, the raising cost is lowered effectively, and the problem that when the conventional artificial feed is used for feeding dichocrocis punctiferalis, larvae refuse feed, the survival rate is low, and the development is not uniform can be solved.

The invention relates to a food fresh-keeping agent, in particular to a food fresh-keeping agent with the function of oxygen absorption. The food fresh-keeping agent is prepared from the following raw materials: 0.5-2 parts by weight of L-sodium ascorbate, 0.5-2 parts by weight of sodium hydrogen carbonate, 0.5-1 part by weight of zeolite, 1-10 parts by weight of ferrous sulfate (containing 7 kinds of crystal water), 1-3 parts by weight of sodium chloride (containing 2 kinds of crystal water) and 1-3 parts by weight of activated carbon. The food fresh-keeping agent has the advantages of scientific formula and simple preparation process and is suitable for keeping the fresh of breads, sausages, cakes, tea leaves, marine products, traditional Chinese medicine and the like. The food fresh-keeping agent is not directly doped in foods, is put in a food container together with a packing material, and can inhibit oxygen below 0.1% so as to inhibit the growth of bacteria without changing the color and the flavor of the foods. The food fresh-keeping agent is a safer food fresh-keeping agent.

The invention discloses a preservative of tea tree oil-based germinated brown rice and a preparation method thereof. Aiming at the characteristic and the rule that nutrient components, such as gamma-aminobutyric acid, gamma-oryzanol, ferulic acid and the like are easily degraded and lost in the storage process of germinated brown rice, ascorbic acid, citric acid, calcium lactate, tea tree oil, Tween 80 and Span 80 are compounded and homogenized. The prepared preservative is natural, has high effect and stable performance, better prolongs the shelf life of the germinated brown rice, and also has vitamin C strengthening and calcium-enriching effects.

The invention relates to a novel cassava color-protection fresh-keeping agent, and a fresh keeping method. The novel cassava color-protection fresh-keeping agent comprises deionized redistilled water, and two or three ingredients selected from following three ingredient: (A) one or two or three selected from chitosan, sodium alginate, and konjac glucomannan, (B) one or two selected from citric acid and ascorbic acid, and (C) calcium chloride. The novel cassava color-protection fresh-keeping agent can be used for fresh keeping, and is capable of avoiding browning and decaying of cassava after harvesting effectively, maintaining excellent storage quality of cassava, and prolonging storage fresh-keeping time.

The invention discloses a camellia nitidissima beverage which comprises the following raw materials in parts by weight: 60 to 80 parts of camellia nitidissima, 40 to 60 parts of rose flowers, 10 to 14 parts of fructose corn syrup, 4 to 6 parts of liquorice, 2 to 4 parts of lycium ruthenicum, 1.2 to 2.0 parts of honey, 0.03 to 0.09 part of citric acid, 0.01 to 0.05 part of sodium citrate, 0.08 to 0.12 part of malic acid, 0.01 to 0.03 part of D-sodium ascorbate, 0.05 to 0.15 part of a thickening agent, 0 to 0.01 part of edible salt, and a proper amount of pure water. The preparation method comprises the following steps: S1, material pretreatment; S2, extraction; S3, fermentation; S4, vacuum distillation and filtration; S5, mixing; S6, fine filtration; S7, sterilization; and S8, germfree canning. The camellia nitidissima beverage prepared by the preparation method disclosed by the invention has certain health effects of reducing the blood pressure, reducing the blood sugar, reducing the blood fat, resisting oxidization, enhancing the immunity of a human body, adjusting the function balance of the human body, maintaining the beauty and keeping young; the product does not contain ethyl alcohol, is slight in bitterness, mellow in tea fragrance, bright in red color, clear and transparent, tastes pure, and is a health beverage with higher nutritional value; the formula is scientific and reasonable, and the production technology is simple.

The invention discloses recombinant E.coli (Escherichia coli) and application thereof. The recombinant E.coli is obtained by transferring an L-VC (Vitamin C) glycosylase gene sourced from bifidobacterium longum IEF101 as shown in SEQ ID NO.1 into Escherichia coli host cells. A single glycosylated product AA-2G (2-0-alpha-D-glucosyl-L-VC) is efficiently produced by adopting a biological method through one-step catalytic conversion; the recombinant E.coli IEF-blsp101 is capable of efficiently synthesizing sucrose phosphorylase in cells, glycosylation reaction of the L-VC can be efficiently catalyzed by taking the L-VC and saccharose as substrates, 90 to 100 g / L of the AA-2G can be obtained by catalyzing within 45 to 72 hours, and the average production intensity is greater than 1.3g.L<-1>.h<-1>.

The invention discloses to gumbo-containing vermicelli and a preparation method thereof, and relates to the field of food processing. The gumbo-containing vermicelli is prepared from the following raw materials in parts by weight: 70-84 parts of high gluten flour, 15-29 parts of gumbo pulp, 0.1-0.15 part of a color fixative (sodium tripolyphosphate, sodium hexametaphosphate, sodium erythorbate or ascorbic acid), 0.8-1.5 parts of edible salt, 0.03-0.08 part of a modifier (carrageenan, starch acetate, propylene glycol alginate or propylene glycol) and 0-1.6 parts of water. The vermicelli is produced by taking the gumbo primary pulp and the flour as raw materials, the inherent nutrition and health functions of gumbo are maintained, the smoothness of the vermicelli is improved, and the vermicelli is good in mouth feel; the vermicelli has the advantages of being nutritional, bright in color and good in mouth feel; the vermicelli product contains rich amino acid, vitamin A, dietary fiber, vitamin C and mineral substances including calcium, iron, zinc and selenium which are essential elements for resisting fatigue, delaying aging and replenishing blood for a human body, thus having a good health care function; after being eaten for a long time, the gumbo-containing vermicelli has effects of nourishing and protecting the stomach as well as strengthening the kidneys and tonifying deficiency.

The invention relates to a quail feed additive comprising the following components in part by weight: 10-20 parts of aureomycin, 3-5 parts of bacitracin zinc, 15-20 parts of oxytetracycline, 5-15 parts of dinitolmide, 5-15 parts of L-calcium ascorbate, 10-20 parts of calcium propionate, 5-10 parts of anise oil, 20-30 parts of bentonite and 1-5 parts of lucerne meal. The quail feed additive is capable of preventing and treating various diseases which are easily produced in the production process of quails, and further has the effects of increasing appetite, promoting animal growth, boosting feed digestion and improving the immunity of organisms.

The present invention provides a bi-spore mushroom preservative, which is characterized in that the preservative comprises the methyl cellulose 8 to 12 g / L, the calcium chloride 0.6 to 1.0 g / L, the ascorbic acid 0.3 to 0.5 g / L, the sorbic acid 0.4 to 0.6 g / L, and the rest of the distilled water. After the preservative is immersed into the bi-spore mushroom, a layer of preservative is coated on the surface of the mushroom; in the air drying or natural drying process, the different molecules of the preservative are interacting with each other to form a uniform and transparent tri-dimensional structural semipermeable membrane, which can close the air holes on the surface of the mushroom so as to form a closed environment having the strict permeation; which can effectively prevent the oxygen entering into the interior of the mushroom, slowing down the outward diffusion of the carbon dioxide caused by the respiration of the mushroom so as to form a space with less oxygen and more carbon dioxide between the semipermeable membrane and the surface of the mushroom. The space can effectively prevent the biological respiration of the mushroom, slow down the consumption of the nutrients, effectively reduce the infringe of the foreign microorganism and reduce the evaporation of the water inside the mushroom during the storage period, thereby maintaining the hardness and the color of the mushroom and enabling the preservation period of the mushroom to exceed ten days.

The invention discloses an artificial feed for Grapholitha molesta Busck larvae and a preparation method thereof. The feed is composed of the following raw materials in weight ratio: 75g of corn meal, 75g of soybean meal, 30g of yeast powder, 198g of tomato jam, 3g of ascorbic acid, 0.1g of cholesterin, 1g of sorbic acid, 2g of methyl-p-hydroxy benzoate, 14g of agaragar and 700g of water. The preparation method is implemented by mixing corn meal, soybean meal and yeast powder uniformly and steaming in a steamer for 30min for standby use; adding distilled water to agaragar, boiling until the agaragar is dissolved completely, cooling to 50 DEG C, adding sorbic acid, ascorbic acid and cholesterin, stirring until dissolved completely; adding steamed mixture of corn meal, soybean meal and yeast powder and stirring uniformly, finally adding tomato jam, quickly stirring to be uniform, pouring into a sterilized preservation box, cooling to room temperature, sealing and refrigerating at 4 DEG C in a refrigerator for use at any time. By combing the artificial feed with apples, Grapholitha molesta Busck can be successively reared indoors, thus obtaining a good quantity of Grapholitha molesta Busck sources developed uniformly.

The invention discloses a method for synthesizing L-ascorbyl palmitate, which comprises the following steps: grinding L-ascorbyl palmitate into fine powder; at 25 to 20 DEG C, slowly adding the L-ascorbyl palmitate fine powder into pure sulfuric acid so that the L-ascorbyl palmitate fine powder dissolves in the sulfuric acid; adding L-ascorbyl palmitate in an amount which is 0.95 times the molar number of L-ascorbyl palmitate into the reaction solution, adding dehydrating agent into the reaction solution, and continuing reaction for 6 to 7 hours; pouring the generated reaction solution into broken ice, filtering out coarse product, drying and washing with water; heating the prepared coarse L-ascorbyl palmitate, dissolving the coarse L-ascorbyl palmitate in ethyl acetate, and decolorizing and purifying the solution by particle active carbon; and subjecting the obtained solution to reduced-pressure distillation and concentration, cooling feed liquid to 0 DEG C and discharging to obtain L-ascorbyl palmitate white powder. When the method disclosed by the invention is used, the production efficiency can be improved greatly, the production period is shortened, the product yield is increased, the product quality is improved, and the dose of palmitic acid is reduced (only 5 percent more is required).

The invention discloses a method for retarding synaeresis of premna microphylla leaf bean curd, comprising the following steps of: blanching fresh premna microphylla leaves with water vapor of 90-95 DEG C after washing, adding water 6 times heavier than the fresh leaves for pulping, filtering to obtain filtrate, adding 0.1% of ascorbic acid, 0.5% of glucose and a mixed gelant to the filtrate, evenly stirring the mixture and then standing for 20 minutes, and then sterilizing and packaging, thereby obtaining the finished product. The method is capable of effectively retarding synaeresis of the premna microphylla leaf bean curd; and the produced leaf bean curd is emerald green in color, fresh and tasty and refreshing, moderate in hardness and low in water seepage, and further has certain elasticity.

The present invention discloses a composite fresh-keeping agent for Chinese water-chestnut storage. The composite fresh-keeping agent comprises, by mass, 1-2% of pullulan, 0.2-0.4% of glycerol monolaurate, 0.01-0.03% of ascorbic acid, and the balance of water. The present invention further provides a method for preparing the composite fresh-keeping agent for Chinese water-chestnut storage. With the technical scheme, the storage time of the Chinese water-chestnut storage is effectively prolonged.

The invention discloses a pig feed additive. The pig feed additive comprises 0.5-0.7 part of chitosan, 0.3-0.4 part of glucose oxidase, 1-3 parts of neutral protease, 0.09-0.12 part of cellulase, 0.1-0.3 part of compound vitamin, 3-5 parts of compound bacterial agent, 8-11 parts of calcium L-ascorbate, 10-13 parts of calcium propionate, 1-3 parts of fish oil, 0.2-0.4 part of compound mineral and 6-8 parts of traditional Chinese medicine extracting solution. The pig feed additive has the beneficial effects that by adding the traditional Chinese medicine extracting solution, insect pests can be effectively killed, the immunities of pigs can be improved and the weights of the pigs are increased by about 12% on average.

The invention discloses feed for donkeys. The feed comprises the following raw materials in parts by weight: 20-30 parts of soybean meal, 20-30 parts of corn, 10-20 parts of wheat berry, 30-40 parts of corn straws, 30-40 parts of sweet potato seedling, 30-40 parts of sugarcane stems, 4-6 parts of zinc bacitracin, 7-11 parts of dinitolmide, 7-12 parts of L-calcium ascorbate, 13-16 parts of calcium propionate, 18-26 parts of bentonite, 1-3 parts of fish oil, 0.05-0.08 par of protease, 0.05-0.07 part of cellulase, 0.2-0.4 part of compound mineral and 6-8 parts of traditional-Chinese-medicine extracting solution.

The invention discloses a method for synthesizing L-ascorbyl palmitate, which comprises the following steps: grinding L-ascorbyl palmitate into fine powder; at 25 to 20 DEG C, slowly adding the L-ascorbyl palmitate fine powder into pure sulfuric acid so that the L-ascorbyl palmitate fine powder dissolves in the sulfuric acid; adding L-ascorbyl palmitate in an amount which is 0.95 times the molar number of L-ascorbyl palmitate into the reaction solution, adding dehydrating agent into the reaction solution, and continuing reaction for 6 to 7 hours; pouring the generated reaction solution into broken ice, filtering out coarse product, drying and washing with water; heating the prepared coarse L-ascorbyl palmitate, dissolving the coarse L-ascorbyl palmitate in ethyl acetate, and decolorizing and purifying the solution by particle active carbon; and subjecting the obtained solution to reduced-pressure distillation and concentration, cooling feed liquid to 0 DEG C and discharging to obtain L-ascorbyl palmitate white powder. When the method disclosed by the invention is used, the production efficiency can be improved greatly, the production period is shortened, the product yield is increased, the product quality is improved, and the dose of palmitic acid is reduced (only 5 percent more is required).

The invention discloses an active granular formula feed for feeding carp and a preparation method of the active granular formula feed. Every 100 parts of the active granular formula feed comprise the following components in part(s) by weight: 0.01-0.03 part of ferrous sulfate, 0.0012-0.01 part of anhydrous cupric sulfate, 0.0058-0.058 part of zinc sulfate, 0.0002-0.0004 part of vitamin A, 0.0001-0.0006 part of vitamin D, 0.1-0.3 part of L-ascorbic acid-2-phosphate, 0.2-0.4 part of hydroxy methionine, 0.02-0.1 part of bile acid, 0.1-0.3 part of montmorillonite, 0.01-0.04 part of bacillus subtilis, 0.05-0.1 part of an enzymic preparation, 0.03-0.05 part of taurine, 0.5-2.5 parts of monocalcium phosphate, 20-40 parts of bean pulp, 3-8 parts of alfalfa meal, 10-20 parts of imported fish meal, 1-2 parts of soyabean lecithin oil, 1-3 parts of other greases and the balance of wheat middling. As multiple vitamins and mineral substances are added to the active granular formula feed disclosed by the invention, the metabolism of the fishes is prompted, the survival rate at the early stage is increased, the growing speed at the late stage is increased, the fishes are kept healthy and grow rapidly, the feed coefficient is reduced, and great benefits are created for breeders.

The invention provides a micro-capsulated composite antioxidant for edible fat and a preparation method of the micro-capsulated composite antioxidant. Soybean lecithin is used as a capsule material of the composite antioxidant, and capsule core substances comprise tertiary butylhydroquinone, dilauryl thiodipropionate, ascorbyl palmitate, propylgallate and phytic acid. The micro-capsulated composite antioxidant for the edible fat comprises the following components based on the total weight being 100%: 35.00%-50.00% of soybean lecithin, 15.00%-20.00% of tertiary butylhydroquinone, 15.00%-20.00% of dilauryl thiodipropionate, 10.00%-20.00% of ascorbyl palmitate, 5.00%-10.00% of propylgallate and 5.00%-10.00% of phytic acid. The fat stability (AOM value) of the micro-capsulated composite antioxidant for the edible fat provided by the invention is 1.5-2 times of that of an antioxidant prepared by simply mixing the components.

Minimally processed fruits and vegetables, such as peeled and cut produce, are preserved by a solution containing a combination of green tea extract catechins and an organic acid or salt thereof selected from any one or any combination of ascorbic acid, erythorbic acid, and salts thereof. The preservative solution prevents residual self-staining properties commonly associated with green tea extract catechins. Processed fruits and vegetables are dipped in, sprayed with, or coated with the preservative solution. The produce preservative solution maintains the color, texture, flavor, appearance, and crispness of the treated produce.

The present invention discloses dragon fruit peel jelly and a preparation method thereof. The dragon fruit peel jelly comprises dragon fruit peels, white granulated sugar, konjac gum, carrageenan, citric acids, ascorbic acids, a dragon fruit essence and water. The preparation method comprises the following steps: (1) the dragon fruit peels are washed clean, the washed the dragon fruit peels are cut into blocks, then the dragon fruit peel blocks are placed into an ascorbic acid solution to be blanched, the blanched dragon fruit peels and the ascorbic acid solution used for the blanching are mixed, and the mixture is beat to obtain a dragon fruit peel homogenate; (2) the white granulated sugar, konjac gum and carrageenan are mixed and stirred evenly, water is added into the mixture, the mixture is boiled, the boiled mixture is filtered, and the filtered mixture is cooled to obtain a mixed glue liquid; and (3) the dragon fruit peel homogenate obtained in the step (1), citric acids, ascorbic acids and dragon fruit essence are added into the obtained mixed glue liquid in the step (2), the mixture is stirred evenly, the stirred mixture is poured into molds, the molded mixture is cooled, the cooled mixture is taken off the molds, and the finished products are obtained. The dragon fruit peel jelly is bright in color and luster, moderate in sourness and sweetness, and full of elasticity. The method is simple in operation and strong in repeatability.

The invention discloses antimicrobial fish feed for increasing fish yield. The fish feed is characterized by being prepared from the following ingredients in parts by weight: 30-32 parts of soybean meal, 20-25 parts of bone meal, 14-17 parts of spinach powder, 3-4 parts of pork extract powder, 7-10 parts of sword beans, 30-32 parts of pig tails, 80-90 parts of bread crumbs, 10-12 parts of daylilies, 0.1-0.12 part of xylanase, 9-10 parts of radix codonopsis pilosula, 0.3-0.5 part of sodium alginate, 1.1-1.3 parts of fructo-oligosaccharide, 0.6-0.8 part of calcium L-ascorbate dihydrate, 8-10 parts of salted egg yolk, 40-43 parts of honeycombs, 13-15 parts of sticky konjac flour and hyaluronic acid. The invention discloses a preparation method of the fish feed. Through the method, vitamin granules are prepared by filling the honeycombs with the salted egg yolk, vitamin B1 solutions, phosphatidylcholine and the hyaluronic acid. An outer wall of each of the vitamin granules is coated with a coating layer which can effectively protect the activity of nutritious granules and improve the digestion function of fish bodies so as to promote nutrient absorption.