52 results about "Common amaranth" patented technology

The invention discloses a graphene oxide-chitosan-carboxymethyl cellulose composite aerogel and an application of the graphene oxide-chitosan-carboxymethyl cellulose composite aerogel in adsorption of amaranth. The preparation method comprises the following steps: mixing a carboxymethyl cellulose aqueous solution with a chitosan acetic acid solution, adding gallic acid, stirring until the gallic acid is completely dissolved, adding the graphene oxide dispersion liquid, and stirring until a system forms uniform and stable gel; the gel is firstly subjected to ultralow-temperature freezing and then subjected to freeze drying, and finally the graphene oxide-chitosan-carboxymethyl cellulose composite aerogel is obtained. The aerogel prepared by the method is environment-friendly and stable in pore structure, and is a composite aerogel material with high adsorption capacity and good regeneration performance on anionic dyes. The adsorption capacity of the aerogel to amaranth can reach 125 mg / g, the adsorption rate is still kept at 77% after the aerogel is recycled for 3 times, and the aerogel is suitable for efficient treatment of dye wastewater.

The invention discloses application of a benzyltrimethyl eutectic solvent in extraction of amaranth red dye, and belongs to the technical field of eutectic solvents. The method comprises the following steps: putting an ABS (Acrylonitrile Butadiene Styrene) solution formed by a benzyltrimethyl eutectic solvent and K3PO4 into an aqueous solution containing amaranth, and extracting the amaranth dye under a constant-temperature stirring condition. The benzyltrimethyl eutectic solvent is synthesized from benzyltrimethyl ammonium chloride and triethylene glycol. An ABS (Acrylonitrile Butadiene Styrene) solution formed by the benzyltrimethyl deep-eutectic solvent prepared by the invention and K3PO4 has relatively strong trapping capacity on amaranth dye, and the extraction efficiency of the amaranth dye is up to 98.1% under the condition that the mass ratio of the ABS solution to an aqueous solution containing amaranth is 1: 1. Meanwhile, the benzyltrimethyl eutectic solvent has the advantages of simple synthesis, low price and the like.

The invention belongs to the field of herbicides. In particular to a 3-phenylisoxazoline-5-formamide oxime ester compound and application thereof. The 3-phenylisoxazoline-5-formamide oxime ester compound disclosed by the invention is shown as a general formula I: # imgabs0. The compound disclosed by the invention generally has a relatively high control effect on various weeds. Part of the compounds of the general formula I have a good control effect on barnyard grass, digitaria sanguinalis, edible amaranth or piemarker when the application dosage is 150 ga.i. / hm < 2 >.

The invention belongs to the technical field of skin dressing. The invention provides an antioxidant, antibacterial and moisturizing patterned treatment skin dressing and a preparation method thereof, and the preparation method comprises the following steps: (1) preparing a polymer solution from a mixture of chitosan and polyvinyl alcohol as a shell solution; mixing the active component into a polyethylene glycol aqueous solution to serve as a core layer solution; and (2) taking a glass plate with gully patterning as a receiving plate, performing coaxial electrostatic spinning on the shell layer solution and the core layer solution obtained in the step (1), and preparing a fiber membrane to obtain the skin dressing, wherein the active ingredients comprise vitamin E, celery seed aqueous extract and edible amaranth aqueous extract in a weight ratio of 1: 1: (1-2). The obtained dressing has excellent oxidation resistance, antibacterial property and moisture retention, the healing time of burn wounds can be greatly shortened, and the dressing has good industrial application prospects.

The application relates to the field of electrochemical analysis methods, and particularly discloses a preparation method of an electrode capable of simultaneously detecting amaranth, carmine and indigo and application of the electrode; the electrode preparation method is as follows: firstly, Fe / Co Prussian blue seed modified carbon fiber paper is prepared through a chemical deposition method; secondly, the Fe / Co Prussian blue seed modified carbon fiber paper is subjected to a hydrothermal reaction to prepare hollow cubic octahedral Fe / Co Prussian blue nanomaterial modified carbon fiber paper electrode; finally, the hollow cubic octahedral Fe / Co oxide nanomaterial modified carbon fiber paper electrode (CoFe2O4@CFP) is obtained through calcination. The CoFe2O4@CFP electrode is used as a working electrode, and the content of the three pigments, i.e. amaranth, carmine and indigo, in a sample to be detected can be simultaneously detected by adopting a differential pulse voltammetry method combined with a chronoamperometry method. Compared with other methods, the method has the advantages of simple preparation, rapid detection, wide application in simultaneous determination of amaranth, carmine and indigo in actual samples such as candies, tap water and beverages, high detection sensitivity, wide detection range and great practical application potential.

The invention discloses an astaxanthin protein nano suspension and a preparation method thereof, and belongs to the technical field of preparation processing. According to the invention, astaxanthin is wrapped by silk fibroin, edible amaranth protein or bovine serum albumin, the astaxanthin-protein nano suspension with color removed or light can be obtained, and the DPPH clearance rate of the suspension is tested, so that the oxidation resistance of the suspension is not lost but also improved; particularly, the DPPH removal rate of the astaxanthin-amaranth protein nano suspension prepared by wrapping the astaxanthin with the amaranth protein is increased by 1.48 times. The astaxanthin-protein nano suspension prepared by the method can obviously lighten the color of the astaxanthin without loss of oxidation resistance, and the application range of the astaxanthin is widened.

The invention relates to the technical field of pesticide reduction and synergism, and discloses a synergistic weeding composition based on trifluralin and butralin as well as a preparation method and application of the synergistic weeding composition. The composition comprises 10-20 parts of trifluralin, 10-20 parts of butralin, 70-80 parts of a solvent, 5-15 parts of an emulsifier, 2-5 parts of silicone oil and 1-10 parts of an antioxidant. The antioxidant has a structure. Tests show that the control effect of the composition on broad-leaf weeds such as edible amaranth and chenopodium album and grassy weeds such as green bristlegrass and digitaria sanguinalis reaches 80-100%, and the removal rate of the composition under the concentration of 16 mu M in a DPPH free radical removal experiment reaches up to 91.2%. The problems that a traditional herbicide is prone to oxidation inactivation, poor in pesticide effect persistence, high in environmental risk and the like are effectively solved, and efficient weeding and environmental safety are achieved.

The invention relates to the technical field of food detection, in particular to a method for detecting a food additive by using black carp stone fluorescent carbon quantum dots, which is a food additive detection method constructed on the basis of a fluorescence quenching phenomenon of the black carp stone fluorescent carbon quantum dots, and has good selectivity and interference resistance on amaranth and sunset yellow. Under the optimal experiment condition, the fluorescence intensity of the carbon quantum dots has a good linear relation with the concentration of the sunset yellow and the concentration of the amaranth, the detection limits are low and are respectively 1.513 mu M (amaranth) and 2.044 mu M (sunset yellow), the precision is high, the relative standard deviation is small, the average recovery rates of actual sample detection are high and are respectively 100.36% (amaranth) and 98.40% (sunset yellow), and the detection limit is low. The method can meet the detection requirements of the additives in the food, provides a novel reliable method for the detection of the food additives, and has a wide application prospect in the field of food safety.

Methods of Amaranthus control are provided, comprising, artificially pollinating an Amaranthus species at a growth area with an effective amount of pollen that reduces fitness of the at least one Amaranthus species, the effective amount comprising 1 mg to 1 gram per plant per application using a precision tool-assisted application or 10 gram to 100 kg per acre per application using a non-precision tool-assisted application during a flowering season of the Amaranthus species.

The invention relates to the technical field of disinfectant preparation, in particular to a disinfectant containing a potassium peroxymonosulfate compound and a preparation method of the disinfectant. The compound disinfectant is prepared from the following components in parts by mass: 60 to 80 parts of potassium peroxymonosulfate, 20 to 30 parts of a modified photoaccelerator, 10 to 15 parts of sulfamic acid, 5 to 10 parts of sodium hexametaphosphate, 1 to 3 parts of sodium dodecyl benzene sulfonate, 3 to 4 parts of sodium chloride, 1 to 2 parts of lemon essence, 0.3 to 1.5 parts of amaranth red pigment, 10 to 20 parts of trisodium citrate and 1 to 3 parts of an anti-caking agent, the composite disinfectant prepared by the invention has excellent microorganism killing performance, and can efficiently kill various microorganisms such as bacteria, fungi, viruses and the like; meanwhile, the disinfectant is safe and harmless to human bodies, does not cause potential health problems, does not generate adverse effects on the environment in the use process, is environmentally friendly and safe, and is an efficient, reliable, durable and safe disinfectant.

The present invention relates to a method for detecting pigments, specifically a method for rapidly determining 11 synthetic pigments in pastries based on a composite desorption extraction method. After sample extraction with a Tween-water-sodium-chloride-methanol solution (pH 8.0) with composite desorption, the sample is separated on a C18 chromatographic column using 20 mmol / L ammonium acetate and methanol as the mobile phase. Detection is performed using a diode array detector, and quantification is performed using an external standard method. This method is capable of rapidly and simultaneously determining 11 synthetic pigments in pastries: tartrazine, new red, amaranth, carmine, sunset yellow, allura red, acid red, erythrosine, brilliant blue, quinoline yellow, and indigo. This method is simple, rapid, and low-cost, suitable for batch testing of 11 pigments in pastries. This method can also be applied to matrices such as fruit products, candies, and solid beverages, providing a reference for the rapid detection of pigments in foods and offering technical support for regulatory oversight.

The invention provides a weeding composition containing quizalofop-p-ethyl, the active ingredients of the weeding composition comprise quizalofop-p-ethyl and fluroxypyr, and the mass ratio of quizalofop-p-ethyl to fluroxypyr is (1-10): (1-15). The dispersible oil suspending agent is prepared by adding auxiliaries such as an emulsifying agent, a dispersing agent, a stabilizing agent, a thickening agent, vegetable oil and deionized water. By utilizing different action mechanisms of quizalofop-p-ethyl and fluroxypyr and compounding, the composition is applied to non-transgenic ACCase inhibitor resistant rice, can effectively kill weeds such as rice, barnyard grass and digitaria sanguinalis which are difficult to prevent and annual weeds such as edible amaranth and eclipta prostrata in a rice field, and has a remarkable effect.

A composition is claimed to support the human immune system, which is particularly suitable for use as a food supplement and contains juice concentrates, fruit purees and / or extracts from acerola fruits and vegetables selected from apple, sour cherry, cranberry, aronia, acerola, pomegranate, rosehip, papaya, ginger, beetroot, barley grass, ginkgo, moringa, green spirulina, shatavari, blue spirulina, red spirulina, goji, ashwagandha, ginseng, kale, Jerusalem artichoke, acai, matcha, sweet fennel, yam, turmeric, artichoke, chicory. Contains dandelion leaves, green tea, baobab, astragalus, schisandra, alfalfa, nettle leaves, guarana, broccoli, chestnut, chlorella, amaranth, psyllium husks, sage, lemongrass, damiana, gotu kola, chickpea, camu camu, chaga, raspberry, cinnamon, reishi, grape seed and any mixtures of the above, as well as 3 to 10% inulin as dietary fiber. The components are selected in such a way that their effects are optimally coordinated and the interaction of the components has a positive overall effect on the overall constitution.

Edible vegetable chewing mass, comprising homogenized, crushed and ground germinated cereal grains from the group consisting of oats, wheat, rye, barley, sorghum, millet, buckwheat and amaranth, wherein the cereal is in the germination phase after six to twenty-five hours of water contact, the chewing mass has a plastic-elastic and uniform consistency and is free from synthetic polymers.

The invention discloses a cigarette paper colorant which comprises one or a mixture of more of a red colorant, a yellow colorant and a blue colorant in any proportion, the red colorant is prepared from the following raw materials: monascus red, mulberry red, erythrosine, carmine, amaranth, polyaluminum chloride, tea polyphenol and sodium malate; the yellow colorant is prepared from the following raw materials: sea-buckthorn powder, beta-carotene, xanthophyll, alum and tea polyphenol; the blue colorant is prepared from the following raw materials in parts: phycocyanin, gardenia blue, brilliant blue, polyaluminum chloride and tannic acid. According to the invention, various required colors are rapidly blended based on the natural pigment, the color phase of the coloring agent is stabilized, a three-primary-color (red, yellow and blue) formula design based on the natural pigment is developed, and the method has important application value for cigarette paper coloring.

The invention discloses a preparation method and application of a leaf vegetable biomass derived nano material, and belongs to the field of nano material preparation. Common leaf vegetable biomass (such as spinach, edible amaranth and leaf mustard) and ferric chloride hexahydrate are used as raw materials, and the low-cost leaf vegetable biomass derived nano material is prepared by a method of firstly dipping and then pyrolyzing. The nano material has peroxidase-like activity and glutathione-like peroxidase activity, shows application prospects in the anti-tumor field, and also provides experimental basis and theoretical support for high-value utilization of leaf vegetable biomass and development of green catalytic materials.

The present application relates to the field of pesticide herbicide, disclose a kind of compound containing pyrazole-quinazoline dione structure and a kind of herbicide and application, the compound has the structure shown in formula (I). Pyrazole-quinazoline dione structure compound provided by the present application can be to barnyard grass, euphorbia, crabgrass, dogtail grass, amaranth, goosefoot, abutilon etc. Many kinds of Gramineae weeds and broadleaf weeds that harm the growth of rice have excellent control effect.

1. Name of the product in this design: Coaster (Lingnan Ten Flower Goddess Series). 2. Purpose of this design: For placing cups. 3. The key design features of this product are the combination of shape and pattern. 4. The image or photograph that best illustrates the key design points: Design 1 3D view. 5. Design 1 is designated as the basic design. 6. Other situations requiring explanation: Design 1 is balsam, Design 2 is osmanthus, Design 3 is honeysuckle, Design 4 is lantana, Design 5 is mango, Design 6 is lemon, Design 7 is pansy, Design 8 is amaranth, Design 9 is night-blooming magnolia, and Design 10 is hibiscus.

The present invention belongs to the technical field of skin dressings. The present invention provides a patterned skin dressing with antioxidant, antibacterial and moisturizing properties and a preparation method thereof, the preparation method comprising the following steps: (1) preparing a polymer solution with a mixture of chitosan and polyvinyl alcohol as a shell solution; mixing active ingredients into a polyethylene glycol aqueous solution as a core solution; (2) using a glass plate with a groove pattern as a receiving plate, coaxially electrospinning the shell solution and the core solution obtained in step (1) to prepare a fiber membrane to obtain the skin dressing; wherein the active ingredients include vitamin E, celery seed water extract and amaranth water extract in a weight ratio of 1:1:1 to 2. The dressing obtained by the present invention has excellent antioxidant, antibacterial and moisturizing properties, can also significantly shorten the healing time of burn wounds, and has good industrial application prospects.

The invention relates to an electrochemical sensor for detecting food synthetic pigment, an electrode and a preparation method thereof, the electrode comprises a graphite paper substrate and a graphene nanosheet layer distributed on the surface of the graphite paper substrate, and the graphene nanosheet layer stands on the graphite paper substrate in a vertical or inclined state relative to the graphite paper substrate. The graphene nanosheet layer is seamlessly connected with the graphite paper substrate; the graphene nanosheet layer and the graphite paper substrate are an integrally formed product prepared by performing surface electrochemical stripping on a piece of graphite paper; lysine molecules are distributed on the surface of the graphene nanosheet layer; the food synthetic pigment is an azo group-containing synthetic pigment. The electrode has the beneficial effects that the electrode has a relatively strong catalytic effect on oxidation of amaranth and lemon yellow, and has the advantages of rapidness, practicability, relatively wide linear range, relatively low detection limit and relatively good reproducibility.

The invention relates to an animal husbandry feed technology, in particular to a special fermented feed for azolla filliculoidas and a preparation method thereof, and the special fermented feed for azolla filliculoidas is prepared from azolla filliculoidas, a functional composition, corn flour, soybean meal, bran, molasses, a compound fermentation inoculant, dicalcium phosphate, mountain flour, table salt, compound trace elements and compound vitamins; wherein the functional composition comprises puffed edible amaranth seeds, bacterial cellulose, tannase, phytase, zein and phospholipid; a three-in-one enzyme targeting delivery system comprising expanded carrier skeleton, bacterial cellulose dispersion liquid reinforcement, protein phospholipid coating and the like is adopted, and a compound fermentation inoculant is combined for synergistic fermentation, so that accurate degradation of anti-nutritional factors in intestinal tracts, efficient utilization of high-tannin raw materials and full release of the growth potential of the rhizoma anemones raddeanae are realized.

A system for the environmentally friendly synthesis, adsorption testing and characterization of nickel oxide nanoparticles, comprising: a plant extract processing plant configured to extract a phytochemical-rich solution from gooseberry biomass by controlled Soxhlet reflux and continuous water circulation; a pre-reaction and mixing chamber which is operationally connected to the extract preparation unit and is configured to receive metered volumes of the extract and an aqueous nickel nitrate hexahydrate solution, the chamber comprising a temperature-controlled stirrer, a pH probe and a peristaltic feed pump to maintain the homogeneity of the solution and the pH within a predefined range; a microprocessor-controlled calcination and combustion unit connected downstream of the reaction chamber and configured to thermally decompose the reaction mixture into nickel oxide nanoparticles under programmed temperature cycles between 300 °C and 700 °C; a nanoparticle collector and drying system configured to separate, transport and dry the synthesized nanoparticles under inert air circulation at controlled temperature; an adsorption test module with two reaction chambers for simultaneous testing of the adsorption of amaranth dye and hexavalent chromium, each reaction chamber comprising an integrated UV-Vis probe, magnetic stirrer, heating plate and microvalve-controlled reagent inlets for pH modulation; a characterization interface configured to transmit optical and surface data from the nanoparticles via dedicated optical and mechanical coupling ports to analytical instruments such as UV-Vis spectrophotometers, FTIR spectrometers, XRD analyzers, and SEM imaging systems; and a central control and processing unit consisting of a microcontroller configured to receive sensor data from temperature, pH and optical transducers, execute synthesis and adsorption control techniques, calculate adsorption kinetics and output real-time process parameters as well as adsorption efficiency.

The invention relates to the technical field of food detection, and in particular to a method for detecting food additives by using bluefish stone fluorescent carbon quantum dots. The food additive detection method constructed based on the fluorescence quenching phenomenon of bluefish stone fluorescent carbon quantum dots has good selectivity and anti-interference for amaranth and sunset yellow. Under optimal experimental conditions, the fluorescence intensity of the carbon quantum dots has a good linear relationship with the concentrations of sunset yellow and amaranth, and the detection limit is low, which is 1.513 μM (amaranth) and 2.044 μM (sunset yellow), respectively. The precision is high and the relative standard deviation is small. The average recovery rate of actual sample detection is high, which is 100.36% (amaranth) and 98.40% (sunset yellow), respectively. The method can meet the requirements for detecting additives in food, provide a new and reliable method for detecting food additives, and has broad application prospects in the field of food safety.

The present application relates to the technical field of disinfectant preparation, and particularly relates to a disinfectant containing potassium peroxymonosulfate compound and a preparation method thereof, the compound disinfectant comprises the following components in parts by mass: 60-80 parts of potassium peroxymonosulfate, 20-30 parts of modified photomodulator, 10-15 parts of sulfamic acid, 5-10 parts of sodium hexametaphosphate, 1-3 parts of sodium dodecyl benzene sulfonate, 3-4 parts of sodium chloride, 1-2 parts of lemon essence, 0.3-1.5 parts of amaranth red pigment, 10-20 parts of trisodium citrate, and 1-3 parts of anti-blocking agent; the compound disinfectant prepared by the present application has excellent microorganism killing performance, and can efficiently kill various microorganisms such as bacteria, fungi and viruses; meanwhile, the disinfectant is safe to human body, cannot cause potential health problems, and cannot cause adverse effects on the environment in the use process, is environment-friendly and safe, and is an efficient, reliable, persistent and safe disinfectant.

The invention relates to application of a natural pigment as a food sweetener, and belongs to the field of food additives. The invention provides application of a natural pigment as a food sweetener. The natural pigment is at least one of mulberry anthocyanin, purple sweet potato anthocyanin, beet red, curcumin, amaranth, capsanthin and monascus red. The mechanism that specific pigment monomers and other sweetening compounds in the natural pigment can be specifically combined with a sweet taste receptor in an oral cavity to improve sweet taste perception is utilized, and the natural pigment with a sweetening effect and the sweetening agent are compounded to construct a sweetening-coloring bifunctional system, so that on one hand, the sweet taste perception can be remarkably enhanced; on the other hand, various colors can be synchronously given to the food, artificial colors are replaced, the safety and attraction of the product are improved, and the method has extremely wide industrial application prospects in the food such as fruit juice beverages and cakes.

The invention relates to a pigment detection method, in particular to a method for rapidly determining 11 synthetic pigments in pastries based on composite desorption mode extraction. The method comprises the following steps: extracting a sample with a Tween water-sodium chloride-methanol solution (pH 8.0) with a composite desorption effect, taking 20 mmol / L ammonium acetate and methanol as mobile phases, separating by using a C18 chromatographic column, detecting by using a diode array detector, quantifying by using an external standard method, and quantifying by using an external standard method. And 11 synthetic pigments such as lemon yellow, new red, amaranth, carmine, sunset yellow, allura red, acid red, erythrosine, brilliant blue, quinoline yellow and indigo in the pastries can be rapidly and simultaneously determined. The method is simple, convenient, rapid and low in cost, and can meet batch inspection of 11 pigments in pastries. The method can also be applied to fruit products, candies, solid beverages and other matrixes, provides reference for rapid inspection of pigments in food, and provides technical support for supervision work of supervision departments.

The invention discloses a dye-containing RT-PCR (reverse transcription-polymerase chain reaction) freeze-dried microsphere and application thereof, the freeze-dried microsphere is formed by a virus amplification primer probe, a buffer solution and dye in a freeze-drying manner, and the dye is one of amaranth, carmine or trypan blue. When the freeze-dried microspheres are used and subpackaged in a freeze dryer, various types of freeze-dried microspheres can be freeze-dried at a time through the visual difference in color, marking on a container is not needed, the use efficiency and the subpackaging efficiency of the freeze dryer can be effectively improved, the time cost is reduced, the dyed freeze-dried microspheres can be stored for 30 days at the temperature of 45 DEG C and the humidity of 80%, and the freeze-dried microspheres have good color fastness. The appearance and the PCR performance are not influenced, and the requirement of normal-temperature transportation is completely met.

The invention discloses an agaricus bisporus mushroom dreg organic fertilizer and a preparation method thereof, and belongs to the technical field of edible mushroom cultivation. The method comprises the following steps: taking agaricus bisporus waste residues and chicken manure as main raw materials, mixing, adding biogas liquid and a microbial agent for composting fermentation, adding nutrient substances such as humic acid, vitamin B1 and bamboo vinegar, as well as a nano-selenium-chitosan compound and edible amaranth into the fermented material, uniformly mixing, and spraying for sterilization. The selenium element is slowly released through the nano-selenium-chitosan compound, so that the oxidation resistance of the agaricus bisporus is enhanced; the edible amaranth serves as a manganese source, activates a metabolic pathway, promotes nutrient absorption and forms a selenium, manganese and sulfur synergistic network with the feather meal, and the hypha metabolism efficiency, the sporocarp quality and the stress resistance are synchronously improved. The organic fertilizer can significantly improve the yield and quality of agaricus bisporus, shortens the harvesting period, and provides an efficient solution for sustainable development of the agaricus bisporus industry.

The present invention relates to a formulation for stimulating hair growth and improving quality, the active ingredient of which is derived from a plant source, in particular comprising 10-20% of an amaranth nitrate-rich extract. In addition, the formulation has one or more ingredients selected from the group consisting of liquid paraffin, mango butter, beeswax, cetyl alcohol, glycerol, sodium benzoate, potassium sorbate. Also disclosed are methods of preparing the formulations, their use and their use for stimulating hair growth and improving hair quality. The formulations have been found to have high wound healing potential at lower concentrations by increasing the cell proliferation rate. The hair growth rate is increased, and the total number and density (n / cm < 2 >) of final hair, vellus hair and hair in the growing period are increased. Application of the formulation on the scalp helps stimulate hair growth and improve hair quality.

The invention relates to the field of electrochemical analysis methods, and particularly discloses a preparation method and application of an electrode capable of simultaneously detecting three pigments of amaranth, carmine and indigo. The preparation method of the electrode comprises the following steps: firstly, preparing Fe / Co Prussian blue seed crystal modified carbon fiber paper through a chemical deposition method; the Fe / Co type Prussian blue crystal seed modified carbon fiber paper is subjected to a hydrothermal reaction, and a hollow cubic octahedron Fe / Co type Prussian blue nanometer material modified carbon fiber paper electrode is prepared; and finally, calcining to obtain the hollow cubic octahedron Fe / Co oxide nano material modified carbon fiber paper electrode (CoFe2O4 (at) CFP). The CoFe2O4-coated CFP electrode serves as a working electrode, differential pulse voltammetry is combined with chronoamperometry, and the content of three pigments including amaranth, carmine and indigo in a sample to be detected can be detected at the same time. Compared with other methods, the method has the advantages that the preparation is simple, the detection is rapid, the method can be used for simultaneously determining amaranth, carmine and indigo in actual samples such as candies, tap water and beverages, the detection sensitivity is high, the range is wide, and the method has great practical application potential.