382 results about "Purplish red" patented technology

The invention is a mulberry dry red wine producing process, including the producing flow: crushing and pulping mulberry->batching->prefermenting->separating and discharging residues-> after-fermenting->primary pouring in kettle->sealing->secondary pouring in kettle->sealing-> tertiary pouring in kettle->sealing->clarifying->mixing->freezing, where the batching: adding in sugar, sulfurous acid, pectase, and crude mulberry pulp; putting the raw pulp in kettles, adding in yeast and fermenting; the separating and discharging residues: discharging clear juice at first and the filtering the rest pulp; combining the juice and the fermentation liquor to enter in the after-fermenting working procedure, and making pouring-in-kettle thrice and making top-layer wine extraction; adopting glutin to clarify the extract. It contains 6-9 percent alcohol. It maintains the natural color of the mulberry, showing prunosus in color, its color is dazzlingly beautiful, sparkling and through-transparent, and it is tasty and refreshing, and pure and nice.

The invention relates to a foaming fruit wine processing technology, particularly to a fresh sulfur-free raspberry and grape foaming wine and a production technology thereof. The raspberry and grape foaming wine is prepared from raspberry and grape according to certain proportion ratio through high-temperature extraction and low-temperature fermentation. A brewing method for the raspberry and grape foaming wine is simple to operate, and all processes of low-temperature fermentation, tank sealing pressure boosting, yeast separation and fragrance formation are finished in one fermentation tank; enough pressure is achieved by carbon dioxide generated by self fermentation, and no secondary fermentation is needed; in the whole brewing process, no sulfur dioxide or other preservative is needed, and the wine is beneficial to human health. The wine is bright red, ruby red, purple red, brownish red and the like, has special fruity flavor and wine flavor, is strong and harmonious in fragrance, pure and refreshing in taste, full in wine body, lasting in aftertaste and strong in typicality, and belongs to the fresh foaming wine.

The invention discloses book reservation dry red grape wine and a brewing method thereof. 'Xiangniang No.1' brier grape is utilized as a raw material for the grape wine, and the physical and chemical indexes of which are as follows: total SO2 is 47mg / L, volatile acid is 0.4g / L, the content of resveratrol is 1.65mg / L and total phenol is 2098 / L; and sensory indexes are as follows: the color is purplish red, and the grape wine has varietal fruity aroma and protruding aroma, is pleasant, has no exotic aroma, is mellow and harmonic, and has strong structural feeling and special style. The brewing method comprises the following steps: preparing materials, removing peduncles, smashing, filling into a tank; carrying out open type circulating, dipping, fermenting, separating out from the tank; fermenting malic acid-lactic acid; changing the tank for the first time; blending in balance; and clarifying or fining, stabilizing, ageing, carrying out stability test, filling, bottling and packaging to obtain the finish product. The brewing process of the grape wine is advanced, the raw materials are natural, and no pigment and preservative are added; the wine color is royal purple, and the wine is clear and transparent; the wine has strong fruit and strong typicalness, pleasant and pure aroma and mature fruit; numerous wine columns remain in a cup; and the smooth mouthfeel does not disperse after the wine is drunk.

The invention discloses a pure grape juice beverage and a production method thereof. The production method is characterized by taking fresh grape as raw material and comprising the following steps: processing the raw material, crushing, carrying out enzymolysis, juicing, heating, roughly filtering, carrying out secondary enzymolysis, finely filtering, mixing, sterilizing, filling and sealing, reversing bottle for sterilizing and cooling, putting on labels and spraying codes, and packing to produce a clear type pure grape juice beverage which is delicious and has the characteristics and taste of the grape. The method is capable of carrying out large-scale industrial production; the produced grape beverage is purplish red in color, clear and transparent, and long in quality guarantee period; the grape beverage is stored, circulated and sold at normal temperatures.

The invention relates to jujube vinegar and a brewing method thereof, belonging to the technical field of food science. The jujube vinegar is purplish red, has clear liquid state, intense vinegar flavor, peculiar fragrance of golden-silk jujube and gentle sour; the total acid is more than or equal to 3.50g / 100mL, the non-volatile acid is more than or equal to 0.50g / 100mL; and the content of soluble solid state material is more than or equal to 1.0g / 100mL. The jujube vinegar takes the golden-silk jujube as a main raw material which is crushed and leached by adding water; the leach liquor is fermented by liquid state alcohol and solid state acetic acid, ageing, vinegar pouring, filtering, clarifying, pasteurizing, filling are carried out on the fermented leach liquor to obtain a finished product. The beneficial effects of the invention are as follows: jujube fruit is crushed, enzymolysis is carried out on pectinase, and the jujube vinegar is easily filtered, is clear and transparent. The invention plays an important role in promoting the reasonable process utilization of red jujube resources, the formation of post-harvest processing industrial chain and the adjustment of fruit processing industrial structure.

The invention discloses a Guangxi zedoary florescence control method which comprises the following steps: (1), seedball treatment: collecting, screening, grading, cleaning, sterilizing and then airing Guangxi zedoary seedballs; (2), refrigeration: refrigerating the Guangxi zedoary seedballs in a refrigerator with the relative humidity of 70 percent to 95 percent at 13 DEG C to 20 DEG C for 30 days to 60 days; (3), germination: taking the seedballs out of the refrigerator and putting the seedballs into a greenhouse with the relative humidity larger than or equal to 90 percent at 25 DEG C to 30 DEG C for germination for 10 days to 30 days; and (4), flower culture: putting the germinated seedballs in a culture chamber for culture until bud bodies swell, and placing seedballs capable of forming blossom buds in natural conditions for culture when mauve inflorescences occur in green bracts but are not exposed. The method enables Guangxi zedoary which originally blooms between April and June and between July to September to bloom and fully bloom during the Spring Festival, thereby achieving the aim of controlling the florescence of the Guangxi zedoary and providing a high-grade new-year flower for the Spring Festival.

The invention discloses passion fruit wine and a production method thereof. The production method comprises the steps of selecting mature claret-colored passion fruits, dicing and spreading under an environment with normal temperature of 25-32 DEG C and humidity of 60-70% for airing for 24-48h, adding 10-15% of rice wine in every 50 kg of fruit, canning and evenly mixing for storage at a normal temperature of 25-33 DEG C in summer and 20-38 DEG C in winter for 72-96h to leach the fruit wine of the first process, then adding 35-40 kg of rice wine with degree of 32-36 in every 100 kg of fruit, adding 5% of schisandra chinensis, 5% of vitis amurensis, 10% of plum and 2-5% of sugar, and canning for storage for 72-96h to obtain the good wine which is strong in flavor, pure in faint scent and claret-colored, wherein the waste residues can be used as feeds or other materials. The production method is simple in manufacturing process and easy in operation; and the wine is rich in various fruit wines with fragrant amino acid smells, vitamins, SOD (Super Oxygen Dehydrogenises) enzymes and the like.

The invention relates to a processing method of a beggar's chicken. The processing method comprises nine steps of: preparing flavoring liquid; preparing fillers; preparing paste; preparing auxiliary materials; preparing main materials; pickling; charging; wrapping paste and baking. The processing method of the beggar's chicken has the beneficial effects that the auxiliary materials are decocted; then chicken meals are pickled; and finally kaolin is used as the paste; and therefore, the delicious taste permeates into the inside of the beggar's chicken meat, the inside and outside of the beggar's chicken meat are ensured to be the same, the beggar's chicken meat is crisp and spicy and is purplish red and bright in color and fragrant.

The invention relates to a method for making suaeda salsa drink, which comprises the following steps of: collecting amaranthine leaves of suaeda salsa, washing the amaranthine leaves, cutting the amaranthine leaves into sections, pulping the amaranthine leaf sections and performing leaching by using redistilled water to obtain amaranthine leaching liquor; and preparing the drink from the leaching liquor, a citric acid, egg white and sugar, vitamin C and pectinase according to a certain proportion, and performing subpackaging and sterilization to obtain the finished product. The raw materials adopted in the method for making the drink are readily available; the method is simple; and the obtained product is unique in taste, bright in color and high in nutritional value and healthcare value.

A color bamboo and timber processing method comprises extraction of blueberry leaf dyeing liquid, mixing of staining liquids, dyeing of bamboo and timber, natural airing and the like. The color bamboo and timber processing method comprises the following steps: plant staining liquids extracted from blueberry leaves are non-toxic, have medicinal values, are natual and environmental-friendly staining liquids, are high in pigment content, are dark red or purplish red, and are light-resistant and high in heat stability; the bamboo and the timber deyed by the blueberry leaf dyeing liquid can permeate into the interior of a material, so that the material is consistent in internal appearnce and external appearnce, and natural in color; furniture made of the bamboo and the timber deyed according to the method is dark red or purple red, is more noble and elegant in color after being polished and varinished, can even achieve the effect of immitating padauk furniture, and meanwhile, can overcome the defect of paint fading, so that the paint surface is not faded when being touched, and remains consistent with the original paint surface after paint repair.

The invention discloses Huangshan purple tea and a preparation method thereof. According to the method, aubergine shoots of tea trees are taken as raw materials, and the special Huangshan purple tea is prepared through five procedures including fresh leaf picking, fresh leaf processing, low-temperature slow frying and fixation, rolling and low-temperature long baking and drying. With the adoption of the preparation method, the problem of severe waste of a large quantity of aubergine shoots in a tea garden due to absence of a corresponding preparation technology of the aubergine shoots at present is solved, and the conventional situation that tea farmers abandon tea picking because no enterprises purchase tea is changed thoroughly; through control of each link, anthocyanin decomposition is prevented to the great extent, the content of anthocyanin in tea soup is increased, meanwhile, degradation of macromolecular substances such as protein, tea polysaccharide and the like is promoted, substances such as amino acid, tea polyphenol, caffeine, vitamins, saccharides and the like forming tea flavor are more dissolved out, bitter and astringency of a prepared product are greatly relieved, and the taste of the tea is kept. The Huangshan purple tea has the advantages of high oxidation resistance, high nutritive value, red purple and bright tea soup and the like, and is suitable for people of all ages to drink.

The invention discloses an anthocyanin of purple yam preparation method, comprising the following steps: A. raw material preparation, B. leaching, C. concentration, D. purification and the like. Purple yam contains rich nutrient components such as starch, protein and various vitamins and minerals, the purple yam has purple-red fleshy tuberous root, has rich nutrition and medicinal values of strengthening the spleen and stomach, promoting the production of body fluid, invigorating the lung, nourishing the kidney, strengthening the essence and the like. The purple-red pigment of the purple yam belongs to the anthocyanin which has physiological activities of resisting oxidation, promoting inflammation, promoting eyesight, improving blood circulation and the like. The invention has simple preparation process and mild conditions and the anthocyanin can be extracted from the purple yam conveniently.

The invention discloses relates to Qinzhou mud pug for producing purple sand products and a preparation method of the Qinzhou mud pug. The Qinzhou mud pug comprises 75-99.9 percentage by weight of a main material and 0.01-25 percentage by weight of an auxiliary material, wherein the main material comprise 20-50 percentage by weight of main material purplish red mud and 50-80 percentage by weight of white mud, an auxiliary material purplish red mud serves as the auxiliary material, the main material is filtered by a filter screen with 45-270 the meshes, and the auxiliary material is filtered by a filter screen with 30-100 meshes. The main material and the auxiliary material of the Qinzhou mud pug are prepared from purplish red mud and white raw ores serving as raw materials of Qinzhou of Guangxi; the raw ore pug prepared by blending the ores according to different proportions and different fineness without adding other chemical components is used for producing the purple sand products, has strong plasticity and little deformation and is easy to mold; and the produced purple sand products have the advantages of fine pores, good heat insulation effect, air permeability, heat stability, breaking strength and impact resistance, high firing rate and smooth surfaces.

The invention provides a method for preparing resveratrol extract by using waste residue from a grape winery as a raw material. The process flow of the method comprises the following steps: pre-treating the waste residue from the grape winery; extracting with a solvent; concentrating, and centrifuging; purifying with macroporous resin; concentrating; and carrying out spray drying so as to obtain the finished product. In the extract produced by using the method, the content of resveratrol is more than 10%; the extract is purplish red in color and bright in tincture; and compared with the conventional cuspidatum resveratrol extract at the market, the resveratrol extract in the invention contains a large amount of strong oxidation-resisting polyphenol substances and natural haematochrome harmless to a human body besides the resveratrol, and hardly contains archen. According to the invention, the process is simple, the operation is convenient, the cost is low, the waste residue from the grape winery is turned into wealth, and the officinal value of the waste residue is fully utilized, thereby being beneficial to comprehensive utilization of grape; and the waste residue from the grape winery can be used as a raw material of a medicament or food.

The invention discloses a method for preparing L-histidine-coated gold nanoparticles by hydrothermal synthesis. A solution of gold nanoparticles prepared by the method is extremely stable and can be kept for more than 6 months at room temperature. The diameter of the obtained gold nanoparticles is between 5 and 50 nanometers, and the obtained gold nanoparticles can be used in fields of nano technology and biology. The pH value of the obtained solution of gold nanoparticles is adjusted to 3 at last. The color of the solution turns from claret-red to purple to violet to blue finally, which indicates that nanoparticles in the solution undergo a certain degree of polymerization. The phenomenon of color variation has certain potential utilization value.

The invention provides a brewing method of fresh mulberry fruit wine. The brewing method comprises the following steps: (1) selecting raw materials; (2) carrying out low-temperature crushing; (3) carrying out low-temperature fermentation; (4) separating fruit juice from pulp; (5) fermenting the fruit juice again; and (6) removing wine lees, and carrying out fining and clarification. The alcoholicstrength of the wine reaches 12%, the residual sugar is less than 3.0g / L, and the volatile acid is less than 0.5g / L. The brewing method has the advantages that the volatile acid in the mulberry wine is controlled by virtue of a key technique in multiple process links, the increase of volatile acid in the mulberry wine is controlled by virtue of multiple links, and the problems that the mulberry wine is difficult to brew, and the brewing of the mulberry wine fails because volatile acid is easily increased are solved. The fresh mulberry fruit wine is attractive purple red and clear and has typical fragrance of mulberries, elegant fragrances of red fruits, pure wine fragrance, balanced, coordinated, smooth and active taste and durable aftertaste.

The invention discloses equipment for low-temperature drying of roses and a method using the equipment to dry the roses. The equipment comprises a drying box body, a moving trolley arranged in the drying box body, a dehumidifying and heat exchanging device arranged in the middle of the top in the drying box body, and a heat supply device for supplying heat to the drying box body. The problems of decrease of temperature and increase of humidity in the drying box body due to the fact that heat energy provided by steam at a stage of rose drying and color fixing cannot be quickly and timely supplemented for air inducing and dehumidifying are solved; the roses dried by the equipment are purplish red in color and bright in tinct, anthocyanin in the roses is protected, and nutrition and healthcare efficacy of the roses on human bodies is improved; the equipment is small in investment, low in running cost and convenient for popularization and use.

The present invention discloses a production method for a suaeda salsa health food beverage by a water extraction method. The production method includes the following steps: collecting fresh purple red leaves of the suaeda salsa, repeatedly washing the leaves, drying the leaves in the shade, pulverizing the leaves and sifting the leaves through a 30 mesh sieve; conducting water extraction on the leaves twice according to a feed liquid mass ratio of 1:25-30, mixing and filtering the two leach liquor; evenly stirring and mixing a mixture of leach liquor and water with a mass ratio of 1:1, white granulated sugar with a mass percent content of 12%-15%, citric acid with a mass percent content of 0.04%-0.06%, honey with a mass percent content of 3%-5% and Vc with a mass percent content of 0.05%-0.08%, thereby obtaining the beverage. Beneficial effects of the method are that: a quantitative analysis and determination of various nutrient components and antioxidant active ingredients is performed; the method has easily available raw materials and a simple production process; compared to the traditional squeezing-type beverage production method, the raw materials can be stored for a longer time without being limited by seasonal growth, and the produced beverage is unique in taste, bright and beautiful in color and luster, and higher in nutrition and health-care value.

The invention relates to a method for green synthesis of nanogold through kiwi fruit juice. Chloroauric acid (0.01% m / v) is used before a reaction and reacts with the kiwi fruit juice to compound fuchsia nanogold, and under the normal pressure condition, nanogold materials are prepared through different experiment conditions (juice adding amounts and reaction temperatures). Results of an ultraviolet visible absorption spectrum and a transmission electron microscope prove that the grain size of the compounded nanogold materials can be controlled through reaction conditions. The green synthesis method does not need other large devices, the method is simple, the amount of raw materials is small, the reaction condition is moderate, and cost is low.

The invention discloses blueberry scented tea. The blueberry scented tea is prepared from the following raw materials in parts by weight: 40-50 parts of dried blueberry granules, 5-15 parts of blueberry leaves, 30-40 parts of roses and 5-15 parts of a flavor substance. The blueberry scented tea disclosed by the invention is unique in taste and convenient to drink; moreover, a preparation process is simple, a blueberry utilization rate is increased, economic benefits of blueberry farmers are improved, and utilization on blueberry effective ingredients is further enhanced. Compared with the current fruit scented tea, the blueberry scented tea prepared by the invention is purple, tastes sour and sweet, reserves rose scent and is not muddy after being brewed, is consistent with modern people's requirements on natural, healthy, safe and delicious drink, and is ideal in stability, convenient to store and instant to drink.

The invention relates to a production process of wild jujube wine. The production process comprises the following steps: impurity removal, fruit inspection, cleaning, beating, enzymatic hydrolysis, screening, centrifugal separation, blending, yeast activation, low-temperature fermentation, low-temperature ageing, filtration and filling. According to the invention, the produced wild jujube wine has unique natural fruit flavor of the wild jujube, is rich in nutrient, shows light purplish red, is clear and transparent in wine body, has rich and pure fragrance of wild jujube, and is soft and delicate in taste. The wild jujube wine can be drunk after being chilled, and shows neat fruit fragrance, refreshing taste and enjoyable taste. In addition to the typical characteristics of fruit wine, the wild jujube wine further has unique health care function. According to the production process, the production technology is reliable, has the domestic advanced level, fills the gap of domestic production and processing technology of high-quality wild jujube products, is domestic initiative, and fully meets the needs of industrial production.

The invention discloses a brewage method of fresh dry red wine, which is characterized by comprising the following steps: determining the grape harvesting time, collecting, removing peduncles, heating, crushing, leaching, pressing to obtain juice, clarifying, adding a nitrogen source, fermenting, storing, stabilizing, refrigerating, sterilizing, filling and the like. The produced dry red wine has the advantages of high yield, bright color (purplish ruby red), smooth and soft mouthfeel, fresh taste and balanced and harmonized wine body, is clear, transparent and lustrous, and has pure, thick, elegant and fine fruit aroma.

The invention provides a processing method for a semi-dried fermented beef ham, relating to the processing field of hams. The processing method comprises the following steps: removing fascias and visible fat of beef and cutting the beef into blocks; freezing the prepared meat blocks and thawing; repeatedly carrying out a freezing and thawing process for three times; storing for later treatment; extruding and forming the obtained meat blocks and putting the meat blocks into a saturated table salt solution; fishing out and leaching water; mixing a pickling solution and a bacterium solution and injecting the mixed solution into the meat blocks; fermenting the meat blocks and stopping fermenting when the pH (Potential of Hydrogen) is 4-6; drying; and smudging the prepared meat blocks into purplish red, and refrigerating to prepare a finished product. The processing method utilizes a repeated freezing and thawing, and extruding treatment technology to treat block-shaped beef raw materials to break muscle fibers and crack cell structures, so that firstly, injected fermentation strains can be uniformly distributed in the meat block; secondly, the water-retaining property of the meat blocks is reduced and the water in a fermentation and drying process is accelerated to be evaporated. Therefore, the quality of a produced product is uniform, the fermentation time and the drying time are saved, the production period is shortened and the cost is saved.

The invention relates to a traditional Chinese medicine composition for curing Raynaud disease. The traditional Chinese medicine composition is made of milk veteh, salvia miltiorrhiza, dogwood, cassia twigs, rhizoma ligustici wallichii, root-bark of tree peony, red paeonia, bitter orange, fumitory, safflower, angelica, lumbricus, radix codonopsitis, dandelion, forsythia, honeysuckle and / or a carrier acceptable medically. The invention also relates to a preparation method for the traditional Chinese medicine composition. The traditional Chinese medicine composition has the functions of warming yang and dispersing cold, getting through blood vessels, invigorating Qin and regulating blood and warming meridians, inducing Bi syndrome, etc., and is used for curing disease symptoms such as limbs acral intermittent paleness, purplish red and flush caused by the Raynaud disease.

The invention relates to the selection and cultivation method of purplish red cabbage. Plant generation F1 whose male parent is cabbage and female parent is purplish red rutabaga is cultivated by distant hybridization; the backcross of the hybrid plants takes cabbage as male parent; cabbage with stable hereditary performance and trait of purplish red is obtained by self-crossing purplish red plants whose general traits are similar to the traits of cabbage after generations of backcross. Different obvolvent types such as obvolvent , unrolling carpel, straight, overlapping-folded and conjunctionally folded can be obtained by the method according to the hereditary performance from male parent, meanwhile the growth season can be controlled in the same way. The invention enriches the breed variety of cabbage and leads a novel direction of breeding cabbage and improving the quality and nutritive value thereof.

The invention relates to prickly pear and lycium ruthenicum composite fruit wine and a making method thereof. The making method of the composite fruit wine comprises the steps of 1 preprocessing of lycium ruthenicum raw materials, 2 preprocessing of prickly pears, 3 breaking stirring, 4 bacteriostasis and enzymolysis, 5 raw material preparation, 6 preliminary fermentation, 7 post-fermentation, 8 squeezing and clarifying, 9 ageing and 10 bottling and storage. The fruit wine is claret-colored, elegant, mellow and normal in aroma, unique in flavor and capable of sufficiently synthesizing the healthcare effects of the two raw materials, has the functions of prickly pears for adjusting the intestines and the stomach, lowering blood pressure and improving immunity, has the effects of lycium ruthenicum for protecting the liver, improving the eyesight, improving circulation and strengthening the physique, and opens a new way for reasonable development and comprehensive utilization of fruits.

The invention belongs to the technical field of wine production, and particularly relates to a method for preparing sulfur-free davidii foex wine. Self-fermentation is conducted by enzyme active factors of davidii foex skin, and the sugar content and the alcohol degree in the wine are controllable by three times of temperature-controlled fermentation; since sulfur dioxide is not added for fermentation in the whole preparation process, the wine is beneficial to human health and fills up a gap of sulfur-free brewing in the wine industry; high-temperature steam is used for conducting sterilization and deacidification treatment, the aged wine is purified by secondary filtering, and the obtained wine product has special fruit aroma and wine aroma and is tasty and refreshing; each davidii foex body is complete and plump; the wine has pure and mellow taste and long aftertaste, is dark purple, and is ecological davidii foex wine having original flavor and taste. The sulfur-free davidii foex wine is simple in production process, short in production cycle, and suitable for industrial production.

The present invention relates to a Chinese medicine tupistra chinensis extract, its preparation method and application. Said extract is obtained by extracting root, stem and leaf of tupistra chinensis, and is a brownish yellow powder. The characteristics of its chemical identification are as follows: Liebermann-Burchard reaction and Molish reaction are positive; the foam test is positive reaction, the foam height of alkaline liquor tube is higher than that of acid liquor tube; Rosen-Heimer reaction at 60deg.C can produce violet red color reaction, it is a steroid saponin compound. Said extract has the action of resisting tumor, resisting inflammation, inhibiting platelet agglutination and resisting thrombosis.

The invention relates to a hair dye and particularly relates to a natural durable hair dye prepared from iridoid and amino acid and a hair dyeing method. The hair dye provided by the invention contains an agent A, an agent B and an agent C, wherein the agent A contains 8-12% of amino acid, 1.0-5.0% of thickening agent, 0.5-1% of vitamin C and the balance of water, and the pH value of the agent A is adjusted to 8-10; the agent B contains 2-5% of iridoid, 1.0-5.0% of thickening agent, 2-4% of phenethyl alcohol and the balance of water; the agent C contains 3-12% of hydrogen peroxide, 1-5% of thickening agent and the balance of water. The hair dyeing method comprises the steps of firstly, discoloring hair, and then, washing and drying; then, uniformly coating the agent A on the hair, and keeping at the temperature of 30-35 DEG C for 15-25min; next, uniformly coating the agent B on the hair, and keeping at the temperature of 30-35 DEG C for 15-25min; finally, uniformly coating the agent C on the hair, keeping at the temperature of 30-35 DEG C for 20-25min, washing and drying the hair. No substances capable of generating toxicity to human bodies are generated in preparation and application processes of the hair dye; the hair dye is good in safety, capable of dyeing the air into various colors such as black, red, yellow, purplish red and the like, plentiful in dyed colors and favorable in fastness.

The invention discloses a method for making strawberry jam, which comprises the following steps of: 1) cleaning strawberries, removing the bases of the strawberries, and draining water for later use; and 2) weighing the strawberries and white sugar in a weight ratio of 1:(0.4-0.7), putting into a pot, stirring uniformly, standing for 40 to 80 minutes, boiling by using slow fire, adding maltose in an amount which is 0.3 to 0.6 time weight of the strawberries, decocting over slow fire for 60 to 120 minutes, adding lemon juice in an amount which is 0.05 to 0.1 time weight of the strawberries, decocting over slow fire for 5 to 10 minutes, and taking the strawberry jam out of the pot. Compared with the prior art, the method has the advantages that: pure natural foods are taken as raw materials, chemicals are not added at all, the lemon juice is used for flavoring and also serves as a nutrient component, and the prepared strawberry jam is claret-colored or rufous, has sour and sweet mouthfeel and high nutritional value, and has thick strawberry aroma.