200 results about "Soluble solids" patented technology

The invention provides application of molybdenum disulfide nanoparticles in preparation of a tomato leaf fertilizer, and particularly relates to the technical field of tomato fertilizers. The molybdenum disulfide nano-particles act on tomato plants in a foliage spraying manner, so that the growth of the tomato plants is promoted and / or the fruit quality is improved. The molybdenum disulfide nanoparticles are used as the foliar fertilizer to significantly increase the plant height and stem diameter of tomatoes, increase the chlorophyll content and trace element content of plants, increase the vitamin C content, soluble sugar content and soluble solid content of tomato fruits, and significantly increase the accumulation of Mo and S of plants through the sulfur-molybdenum synergistic effect, so that the yield of the tomatoes is increased. A scientific basis is provided for reasonable application of the nano molybdenum fertilizer, and a way is opened up for high-yield and high-quality cultivation of tomatoes.

The invention belongs to the technical field of plant molecular biology, and relates to application of VDAC1 / 3a allele in regulation of tomato cold resistance. According to the invention, the expression quantity of the SlVDAC1 / 3a gene in the VDAC1 / 3a allele is reduced by means of knockout or mutation and the like, so that the cold resistance of the tomato can be enhanced, the yield of the tomato and the content of soluble solids are not negatively influenced, and a theoretical basis and gene resources are provided for cultivating and screening cold-resistant tomato varieties.

The invention discloses preparation and application of an arundina graminifolia fermentation extract. The arundina graminifolia is fermented by adopting saccharomyces cerevisiae, so that the yield of total polyphenol (increased by 119.1%) and the yield of flavone (increased by 43.8%) in an arundina graminifolia extracting solution can be remarkably increased. The content of soluble solids in the obtained fermentation broth is 9.12 mg / mL, and the fermentation broth has acetylcholin esterase inhibitory activity (IC50 is 4.0 mg / mL) and oxidation resistance (the free radical scavenging rates IC50 of ABTS and DPPH are 0.116 mg / mL and 16.2 [mu] g / mL respectively); the fermentation liquor is high in sensory evaluation and palatability, and can be applied to nerve health maintenance in the field of homology of medicine and food as well as antioxidant functional beverages and health care products.

The invention discloses an SNP molecular marker for identifying the soluble solid content of peach fruits and application thereof, the nucleotide sequence of the SNP molecular marker is as shown in SEQ ID NO.1, and the SNP mutation site is the 201st site (A / G mutation) of the sequence as shown in SEQ ID NO.1 and is located at 16bp, 613bp and 334bp of a fifth chromosome of a peach genome. The SSC contents are classified into two classes by taking 12% as a boundary in combination with genotypes by referring to Peach germplasm Resource Description Standards and Data Standards, that is, the SSC content smaller than or equal to 12% is low SSC content (AA / AG), and the SSC content larger than 12% is high SSC content (GG). The obtained SNP molecular marker is used for verifying the content of soluble solids in pulp, and the result shows that the accuracy rate of the low SSC content (AA / AG) is 84.48%, the accuracy rate of the high SSC content (GG) is 81.69%, and the overall accuracy rate is 83.23%, which shows that the SNP molecular marker can be used for early prediction and screening of the content of soluble solids in peach fruits.

The invention provides a method for improving storage and preservation of fresh lilies, which comprises the following steps of: soaking the fresh lilies in micro-nano bubble ozone water (O3-MNBW), naturally airing after soaking treatment, and storing under a cold storage condition. The invention also provides a new application of the micro-nano bubble ozone water, namely the application of the micro-nano bubble ozone water in improving the storage quality of the picked fresh lily. According to the method provided by the invention, the weightlessness of the lilium brownii scales is obviously slowed down, the weightlessness, hardness reduction, respiration and browning of the lilium brownii scales are effectively inhibited, the content of soluble solids is maintained, the dip dyeing of pathogenic microorganisms is effectively prevented, and the quality of the lilium brownii scales in the postharvest storage period is obviously improved. Through O < 3 >-MNBW treatment, the sensory evaluation index of the picked fresh lilies is effectively improved, the preservation quality is improved, browning after picking is inhibited, only one-time treatment is needed before storage, and the economic benefit is remarkable. And a novel, economical and effective fresh-keeping mode is provided for the storage period of the picked fruits and vegetables.

The invention relates to a method for improving portable near infrared spectrum data analysis precision, which comprises the following steps: carrying out spectrum scanning on different grape samples to obtain a plurality of original near infrared spectrum data; preprocessing the original near infrared spectrum data to obtain corresponding preprocessed data, and performing dimension transformation on the preprocessed data to obtain a two-dimensional image; processing the two-dimensional image to obtain a reconstructed image, and training the initial convolutional neural network model based on the reconstructed image to obtain a target convolutional neural network model; and taking the output result of the feature extraction layer of the target convolutional neural network model as the input of a partial least square regression model, and constructing a fusion model so as to detect the soluble solid content of the to-be-detected grape through the fusion model. According to the invention, the hardware limitation of the portable near-infrared spectrometer is overcome, and the precision and efficiency of the portable near-infrared spectrum data analysis precision are improved.

The invention discloses a cherry sugar transporter gene CpSWEET10 and application thereof, and belongs to the technical field of cherry gene engineering. A novel sugar transporter gene CpSWEET10 is obtained through cloning, the nucleotide sequence of the novel sugar transporter gene CpSWEET10 is shown as SEQ ID NO.1, and the coded amino acid sequence of the novel sugar transporter gene CpSWEET10 is shown as SEQ ID NO.2. The gene is highly expressed in cherry fruits, and the content of soluble solids and total sugar in mature fruits is remarkably positively correlated with the expression quantity of the soluble solids and the total sugar; through subcellular localization and sugar transport function defect type yeast mutant functional complementation experimental analysis, the protein coded by the CpSWEET10 gene is localized in a cytoplasmic membrane and has a sucrose transport function; the cherry sugar transporter gene CpSWEET10 disclosed by the invention can be applied to the improvement of the sugar degree character of the fruits, and a new gene resource is provided for molecular breeding for improving the high-sugar quality of the cherry fruits.

The invention belongs to the technical field of fruit tree cultivation and plant growth regulation, and particularly relates to a plant growth regulator containing 5-ALA and application of the plant growth regulator in prunus humilis planting. According to the method disclosed by the invention, the nutritional quality of fruits is remarkably improved by spraying a 100 mg / L 5-ALA solution on the whole cerasus humilis plant. Compared with clear water, the sugar content of the cerasus humilis fruits treated by the 5-ALA in the full ripening stage is increased by 44.01%, the acidity is reduced by 23.75%, the soluble solids are increased by 60.22%, and the flavor of the fruits is remarkably improved; meanwhile, the total calcium content of the fruits is increased by 30.22%, the water-soluble calcium content is increased by 91.12%, the pectin calcium content is reduced by 30.04%, and the active calcium content is increased by 50.74%; the content of soluble protein is increased by 30.98%, so that the acidity is reduced, and sugar, calcium and protein are synergistically improved.

The invention discloses application of an SlBRL2 gene in improvement of tomato fruit quality, and belongs to the technical field of plant genetic engineering. According to the invention, the gene SlBRL2 related to the tomato fruit quality is found, and the CDS sequence of the gene SlBRL2 is as shown in SEQ ID NO. 1. It is found for the first time that the knockout of the SlBRL2 gene can significantly improve the tomato fruit shape index, the fruit hardness, the soluble solid content, the total sugar content and the carotenoid content, the taste and the nutritional quality of tomatoes are improved while the storage resistance and the transportation resistance of the tomatoes are improved, and a new direction is provided for tomato germplasm breeding.

The invention relates to the technical field of agricultural product detection, and discloses a grape SSC detection and origin traceability method based on NIR multi-task ensemble learning. The method comprises the following steps: (1) carrying out near infrared spectrum transmission scanning on a grape sample, and measuring the content of soluble solids; (2) integrating the spectral data, the soluble solid content and different production place categories, and splitting into a training set and a test set; (3) identifying soluble solid content characteristics and production place category characteristics by using a Boruta algorithm, and calculating average importance after the characteristics are combined; (4) setting an importance threshold, screening out shared features, and obtaining a reconstruction training set and a reconstruction test set; (5) constructing an XGBoost integrated learning model by using the reconstructed training set, carrying out global tuning on hyper-parameters, and training to obtain a final model; and (6) performing prediction based on the final model to complete grape SSC detection and origin traceability. The method provided by the invention can overcome the defects of low feature utilization rate and limited precision of a traditional single-task model.

The invention discloses an application of a Solyc02g060560 gene in regulation and control of sugar content and size of tomato fruits, wherein a CDS (Coding Sequence) sequence of the Solyc02g060560 gene is as shown in SEQ ID NO. 1. A tomato transcription factor mutant library is constructed through a CRISPR (clustered regularly interspaced short palindromic repeats) technology, and a mutant TOM6-126 with unknown functions at present in a C2H2 family is screened. Based on observation of the phenotype of the mutant, the inventor determines that the gene is related to the sugar content and the fruit size of tomato fruits. Compared with a wild type, the soluble solid content (brix) of tomato fruits of the mutant is increased, and the fruits become larger. It is indicated that the Solyc02g060560 gene plays an important role in negative regulation of tomato fruit growth and development and sugar content. According to the invention, a good gene genetic resource foundation is laid for the cultivation of a new variety of tomatoes with high sugar content.

The invention discloses a method for rapidly detecting the quality of potatoes in low-temperature storage and normal-temperature sugar recovery processes, and belongs to the technical field of agricultural product detection. Obtaining multi-variety colored potato samples under different storage conditions and storage time; physicochemical determination is carried out on four quality indexes of potato starch, soluble solids, moisture and hardness in the storage process; acquiring an absorption coefficient spectrum and a reduced scattering coefficient spectrum of the sample slice in a range of 400-1700nm; based on the absorption coefficient spectrum and the reduced scattering coefficient spectrum, establishing and selecting an optimal quantitative prediction model of each quality index of the potatoes through different spectrum preprocessing, spectrum dimension reduction and feature extraction algorithms and a machine learning regression algorithm; and using the optimal model to rapidly detect the corresponding quality index. The method can provide a new rapid and integrated detection means for the key physical and chemical quality of the potatoes in the low-temperature storage and normal-temperature sugar return treatment processes.

The invention belongs to the technical field of genetic engineering breeding, and particularly relates to application of an SC8 gene in regulating accumulation of soluble solids in tomato fruits and a breeding method. The SC8 gene provided by the invention plays an important role in tomato saccharic acid metabolism and soluble solid synthesis and accumulation, and plays a role in negative regulation of tomato fruit soluble solid synthesis and accumulation. The SC8 gene is applied to plant genetic engineering breeding, and a new functional site and a new breeding thought are provided for cultivating high-quality flavor tomato varieties. By inhibiting the expression of the SC8 gene, soluble solids and sugar acid metabolites thereof such as cane sugar, fructose, glucose, malic acid and citric acid in the red ripe tomato fruits can be increased, and by enhancing the expression level of the SC8 gene, synthesis and accumulation of the soluble solids in the tomato can be reduced; therefore, the implementation of the invention provides a feasible way for cultivating and producing tomatoes with various flavors and qualities, and plays an important role in improving the economic benefits of the tomato industry.

The invention relates to the technical field of gene engineering, in particular to application of a knockout SlABCB13 gene in increasing the soluble sugar content of tomato fruits. The function of the SlABCB13 gene is deleted by mediating gene editing, so that the content of soluble sugar (cane sugar, fructose and glucose) and the content of soluble solids in tomato fruits are remarkably increased, and the SlABCB13 participates in sugar transport of the tomato fruits. Meanwhile, the mutant does not influence related yield indexes such as plant height, stem diameter, fruit size, fruit setting number and single-plant fruit yield, and a new thought is provided for the problem that yield and quality are difficult to consider in existing tomato breeding.

The application discloses a concentrated tomato product for assisting in reducing blood fat and a preparation method thereof. The concentrated tomato product is prepared from the following raw materials in parts by weight: mature red tomatoes 800-1000 parts, phytosterols 8-12 parts, composite dietary fibers 3-8 parts, Omega-3 fatty acid microcapsules 2-6 parts, antioxidants 0.5-1.2 parts, stabilizers 0.3-0.8 parts, and edible buffer agents in an appropriate amount. The concentrated tomato product is concentrated juice or powder. The soluble solid content of the concentrated juice is 35-40 Bx, and the moisture content of the powder product is 5.0%. The application combines phytosterols, composite dietary fibers, Omega-3 fatty acid microcapsules and other natural functional components, and the components play a synergistic effect through different blood fat reduction mechanisms, thereby comprehensively assisting in regulating lipid indexes such as cholesterol and triglyceride. The blood fat reduction effect is significantly better than that of single-component products and ordinary tomato products, and the health needs of people with high blood fat can be met.

The present application belongs to the technical field of plant cultivation, and particularly relates to a biological fertilizer for relieving fruit drop of Taiwan long fruit mulberry and application. The biological fertilizer comprises animal manure, soybean meal powder, humic acid, peat soil, coconut bran, bran, fermentation liquor of a compound microbial agent, seaweed extract powder, amino acid chelated iron and borax; wherein the compound microbial agent comprises Bacillus amyloliquefaciens and Pseudomonas aeruginosa. The above biological fertilizer is balanced in nutrients, is beneficial to enhancing the resistance of the mulberry to adversity and reducing fruit drop caused by stress; in addition, the Bacillus amyloliquefaciens and the Pseudomonas aeruginosa are used synergistically, and the two jointly build a healthy rhizosphere micro-ecology, thereby guaranteeing nutrient supply for fruit development from the root source. Therefore, the technical scheme of the present application can not only significantly reduce the fruit drop rate, but also improve the single fruit weight, soluble solid content and anthocyanin content of mulberry, and improve the flavor and color of the fruit.

An aloe extract-based antibacterial composition, which is a nano microemulsion and comprises the following components in percentage by mass according to soluble solids: 0.50%-10% of an aloe extract, 0.50%-5.0% of polylysine, 0.50%-20% of a caprylohydroxamic acid, 6.0%-20% of a surfactant, 15%-60% of a solvent, the remainder being water. A preparation method for the antibacterial composition comprises: mixing polylysine, an aloe extract, a caprylohydroxamic acid, a surfactant, a solvent, an optional auxiliary agent, and water, and carrying out ultrasonic treatment to prepare a uniform nano microemulsion. The aloe extract, the polylysine and the caprylohydroxamic acid are compounded by means of a microemulsion system, thereby achieving a synergistic effect, and greatly improving an antibacterial effect; and the antibacterial composition is green and safe and can serve as a bacteriostatic agent to be used in products such as daily necessities, washing and caring cosmetics and baby products.

The invention discloses an application of indole-3-acetamide in storage and preservation of postharvest oranges, and belongs to the technical field of food preservation. A variety of indole-3-acetic acid analogues are selected, a postharvest storage and fresh-keeping test is carried out by taking citrus reiculata Blanco as an experimental material, and the screened indole-3-acetamide has stronger fresh-keeping activity and can greatly prolong the storage period of citrus reiculata Blanco. Then, Wenzhou mandarin oranges are used as experimental materials to further verify the effect of the indole-3-acetamide in citrus preservation, and it is proved that the indole-3-acetamide can significantly reduce the pedicel aging rate and rotting rate; the accumulation of peel reactive oxygen species (ROS) is inhibited, and the SOD activity is improved; and the fruit hardness, soluble solids and sugar-acid ratio are maintained, and the internal quality is maintained. Therefore, as an indole-3-acetic acid analogue, the indole-3-acetamide has excellent storage and fresh-keeping effects after the citrus is picked.

The invention belongs to the technical field of molecular breeding, and discloses application of a citrus CsAPD2-2 gene in reducing the citric acid content of citrus fruits. The invention discloses the application of the CsAPD2-2 gene in regulating and controlling the citric acid content of plant leaves / fruits for the first time. According to the invention, the sugar orange CsAPD2-2 gene highly associated with the citric acid content of the fruits is successfully cloned, and the gene is specifically and highly expressed in the citrus fruits. The gene is over-expressed in citrus and tomato, or the gene is knocked out in citrus by virtue of a CRISPR / Cas9 gene editing technology, so that the content of citric acid in fruits is correspondingly reduced and increased, and meanwhile, the gene does not influence the properties of flowering and fruiting time, pulp color, single fruit weight, soluble solid content and the like of plants; therefore, the CsAPD2-2 gene is a fruit citric acid content negative regulation gene with strong pertinence.

This invention belongs to the field of grape cultivation technology, specifically relating to a fruit enlargement agent for Daqing grapes, its preparation method, and its application. The fruit enlargement agent for Daqing grapes is prepared from an aqueous solution of gibberellin, thiabendazole, and brassinolide. Specifically, the concentration of gibberellin in the fruit enlargement agent is 20 mg / L~25 mg / L, the concentration of thiabendazole is 1.0 mg / L~1.25 mg / L, and the concentration of brassinolide is 0.025 μg / L~0.050 μg / L. The fruit enlargement agent of this invention, combined with fruit thinning treatment, can increase the weight of a single Daqing grape berry by at least 20% while retaining the soluble solids content of the grape.

This invention discloses a method for extending the storage time of peaches, a composite plasma-activated water system, and a preservation system, belonging to the field of post-harvest preservation of fruits and vegetables. The method uses a quaternary gas mixture of argon, oxygen, carbon dioxide, and helium to prepare plasma-activated water through discharge. A specific ratio of tea polyphenols and chitosan is then added to obtain composite plasma-activated water. Combined with gentle pre-cooling, light-protected ultrasonic atomization spraying, and modified atmosphere buffering, this achieves a synergistic effect of antibacterial activity, water retention, antioxidant properties, and flavor preservation. This method can reduce the total bacterial count, rot rate, and weight loss rate of peaches during storage, maintain fruit firmness, enhance the activity of endogenous antioxidant enzymes, reduce malondialdehyde accumulation, and effectively retain soluble solids and titratable acids, among other flavor compounds. The process of this invention is green and mild, with no chemical residues, and can delay flesh softening and peel browning, thus extending the storage time and shelf life of peaches.

The invention belongs to the technical field of agricultural compositions, and particularly relates to an agricultural composition for promoting disease resistance and quality improvement of fruit trees. The active ingredients of the agricultural composition are geraniol and S-abscisic acid, a field test shows that the mass ratio of geraniol to S-abscisic acid is (8-16): (15-7), the geraniol and S-abscisic acid have a synergistic effect, and the geraniol and S-abscisic acid can remarkably improve the single fruit weight and soluble solids of facility cherries and peaches, improve the anthocyanin content in the facility cherries and improve the vitamin C content in the peaches, so that the yield of the facility cherries and peaches is increased. Meanwhile, the morbidity of the gummosis of the fruit trees is remarkably reduced, and the disease resistance of the tree bodies is enhanced. The invention provides more solutions for solving the problems of frequent gummosis and fruit quality decline in fruit tree cultivation.

The invention relates to the technical field of plant cultivation and nutrition, and discloses a treatment method for enhancing coloring and sugar increasing of citrus fruits based on 5-aminolevulinic acid. And phosphite serving as a carbon immobilization catalyst and polyhydric alcohol serving as a product transfer accelerant are creatively compounded. The preparation method comprises the key step of accurately regulating and controlling the pH value of the system so as to ensure the stability and efficient absorption of the preparation. According to the application method, foliage spraying is carried out in specific time windows of the young fruit stage and the expansion stage of citrus, so that the effect of the preparation is matched with the key physiological rhythm of fruit development. Through the synergistic effect of the composition and the method, the photosynthetic whole chain of light harvesting-carbon sequestration-transportation is systematically optimized, the soluble solid content and the sucrose content of the citrus fruits can be remarkably increased, the color turning of the peel is effectively promoted, and the method is safe, stable and outstanding in effect.

The invention provides a self-circulation peach orchard grass growing covering cultivation method. The technical problems that in the prior art, the peach orchard circulation updating cost is high, and the fruit tree growth condition is poor are solved. The method comprises the following steps: sowing medicago sativa or astragalus sinicus among peach tree rows; after the grass seeds are mature and 5-10 days before the fruit expansion period of the peach trees is started, light-proof and water-permeable gardening ground cloth is laid in an overhead mode 20-30 cm away from the ground, and weed suppression and decay promotion are achieved; the ground cloth is removed after the fruits are harvested, so that grass seeds naturally falling off in the last year germinate and regenerate in a light-transmitting manner, and a'cloth covering-cloth uncovering 'closed-loop cycle is formed. Zero-cost self-circulation (the germination rate is larger than or equal to 92.3%) of grass seeds is synchronously achieved, the decomposition fertilizer efficiency is matched with the peach tree fertilizer requirement peak (the soluble solid content breaks through 13.21%, and the weight of a single fruit is 236.12 g), and the synergistic advantages of soil improvement and acid reduction (organic matter content is 33.09 g / kg) of alfalfa and nitrogen fixation and sugar extraction (soluble sugar content is increased by 12.61%) of astragalus sinicus are exerted. The problems of year-by-year reseeding, fertilizer competition between grass and trees and fertilizer efficiency lag in the traditional grass growing technology are solved, the planting cost is reduced, and the dual improvement of ecology and quality is realized.

This invention belongs to the field of carbon dot technology in traditional Chinese medicine, and more specifically, relates to cinnamon carbon quantum dots, composite films, their preparation methods, and applications. The cinnamon carbon quantum dots provided by this invention are prepared from cinnamon as raw material through a hydrothermal reaction at 190–210℃ for 9–11 hours, followed by centrifugation and dialysis (molecular weight cutoff 900–1100 Da). The resulting particles are spherical with a particle size of 1.5–3.2 nm and contain O-C=O, C-O, and C-C functional groups on their surface. A composite film is prepared by mixing and drying chitosan, acetic acid solution, glycerol, and the cinnamon carbon quantum dot solution. This composite film, when used for preserving honeysuckle berries, can improve the rate of good fruit, reduce weight loss, and maintain nutritional indicators such as soluble solids, titratable acid, total phenols, ascorbic acid, anthocyanins, and flavonoids. Simultaneously, it reduces malondialdehyde content, inhibits respiration intensity, and maintains fruit firmness. It extends the shelf life by 4 days at 25℃ and by 10 days at 4℃, demonstrating promising application prospects in fruit and vegetable preservation.

The present invention relates to a method for improving the accuracy of portable near-infrared spectral data analysis. The method comprises: performing spectral scanning on different grape samples to obtain multiple raw near-infrared spectral data; preprocessing each raw near-infrared spectral data to obtain corresponding preprocessed data, and performing dimensionality transformation on the preprocessed data to obtain a two-dimensional image; processing the two-dimensional image to obtain a reconstructed image, training an initial convolutional neural network model based on the reconstructed image to obtain a target convolutional neural network model; and using the output of the feature extraction layer of the target convolutional neural network model as the input of a partial least squares regression model to construct a fusion model, so as to detect the soluble solids content of the grapes to be tested using the fusion model. Through this application, the hardware limitations of the portable near-infrared spectrometer are overcome, and the accuracy and efficiency of the portable near-infrared spectral data analysis are improved.

The invention discloses a method, a system, equipment and a medium for predicting the content of soluble solids in apples, and relates to the technical field of nondestructive testing. The method comprises the following steps: preprocessing hyperspectral data of a target apple to obtain preprocessed data; an SSC prediction model is constructed; the SSC prediction model adopts a double-branch neural network based on a DBFEnet model; the double-branch neural network comprises an FEB feature extraction module, a reconstruction branch and a prediction branch; the prediction branch comprises a 2DAM feature extraction module; the 2DAM feature extraction module is composed of a respe layer, an SAM layer, a 2D-Conv layer, a BN layer and a Relu layer; and inputting the preprocessed data into the SSC prediction model for processing to obtain a predicted value of the soluble solid content of the target apple. According to the method, the feature representation capability of the hyperspectral data can be enhanced, so that the prediction capability of the hyperspectral technology on the apple SSC is improved.

According to the invention, the black soldier flies are converted into pitaya branch waste and chicken manure to prepare an organic fertilizer through aerobic fermentation, the organic fertilizer is applied to a pitaya field to verify the fertilization effect, and the pitaya is mature after about 40 days. Experimental results show that compared with a control group (applying a water-soluble fertilizer), the insect-sand organic fertilizer can improve the weight of a single pitaya fruit, and the number of fruits of 400 g or above is obviously higher than that of the control group. And the content of soluble solids in the center and the edge of the pitaya is remarkably increased by the medium-dose fertilization group. The result shows that the worm sand organic fertilizer has the potential of improving the fruit quality and yield, and a feasible way is provided for resource utilization of pitaya branch waste.

This invention discloses a caramel color and its preparation method, comprising the following steps: 1) Pretreatment: removing gum and ash from sugarcane waste molasses; 2) Evaporating and concentrating the pretreated molasses to a molasses solution with a total sugar content of 50%; 3) Adding ammonia water to the molasses solution to form a reaction system, wherein the NH4+ of the ammonia water is added. + The total sugar content in the molasses solution is 5-7%; 4) Add one of ferric sulfate, sodium sulfite, or cysteine ​​to the reaction system and stir until homogeneous, the amount added being 1% of the total sugar content in the molasses solution; 5) Heat the reaction solution obtained in step 4) to 130-140°C and maintain the temperature for 55-70 minutes; 6) Immediately cool the reaction solution obtained in step 5) to room temperature, and concentrate the cooled reaction product to a concentration of 68%-75% soluble solids to obtain caramel color. This invention aims to develop high-quality, high-safety, and high-economical caramel color through additive research.