82 results about "Geraniol" patented technology

The invention discloses a novel long-acting bird repellent and a preparation method thereof, and belongs to the technical field of chemical bird repelling. The bird repellent is composed of a core material and a wall material, the core material is a mixture of geraniol, cinnamyl aldehyde and allicin according to the mass ratio of 1: (1.2-1.5): (0.5-0.8), the wall material is modified beta-cyclodextrin and pumpkin seed protein nanoparticles, and the mass ratio of the geraniol, the cinnamyl aldehyde and the allicin is (5-7): (3-5): (1-3). The preparation method comprises the following steps: preparing the quaternary ammonium salt modified beta-cyclodextrin, including the core material, performing high-speed shearing emulsification on the quaternary ammonium salt modified beta-cyclodextrin and the pumpkin seed protein nano dispersion liquid, and performing freeze drying to obtain a final product. According to the invention, a stable and compact'molecular inclusion + physical barrier 'dual slow-release structure is constructed by utilizing the electrostatic interaction between the positively charged modified beta-cyclodextrin and the negatively charged protein nanoparticles, the release time of effective components is remarkably prolonged to 9 months or more, and the composite material has excellent rain wash resistance and ultraviolet resistance, and can be used for preparing a composite material with a good application prospect. And efficient, environment-friendly and long-acting bird repelling is realized.

The invention relates to the technical field of polyester degradable plastics, and discloses a biodegradable shrink film as well as a preparation method and application thereof. The preparation method of the biodegradable shrink film comprises the following steps: reacting (R)-3-hydroxybutyric acid with 1, 4-dibromobutane to obtain a dihydric alcohol monomer; the preparation method comprises the following steps: copolymerizing a dihydric alcohol monomer and L-lactide to obtain modified polylactic acid; carrying out copolymerization on the geraniol-based compound and L-lactide to obtain a bio-based plasticizer; modifying the bio-based plasticizer with allyl trimethyl ammonium chloride to obtain a modified bio-based plasticizer; the biodegradable shrink film is prepared by taking modified polylactic acid, poly (butylene adipate-co-terephthalate), a modified bio-based plasticizer, a functional filler and palm wax as raw materials. The biodegradable shrink film has the advantages of flexibility, shrinkage performance, lasting antibacterial performance and good barrier performance, and can be used in food packaging materials.

The invention provides a method for regulating and controlling aroma of grape fruits through an exogenous plant growth regulator, which comprises the following steps of: spraying three exogenous plant hormones, namely methyl jasmonate, phenylalanine and strigolactones, on 'Hanxiangmi' grape fruits with strong rose aroma, and analyzing the aroma composition and content of the treated grape fruits. The result shows that the rose fragrance intensity of the'Hanxiangmi 'grapes is enhanced after the jasmonic acid methyl ester treatment; after strigolactones treatment, components such as alpha-terpilenol, beta-ionone, nonanoic acid, geraniol and the like in grape fruits are prominent, so that the treated grapes are converted into mixed fragrance type grapes with flower fragrance, fruit fragrance and grass fragrance, and the fragrance layers are rich; and the treatment effect of phenylalanine is not obvious. The invention provides a reference for the research of strigolactone in fruit quality.

The invention discloses a composition for enhancing Chinese chestnut fragrance of a tea beverage as well as a preparation method and application of the composition, and belongs to the technical field of food additives. The composition is prepared from the following raw materials in parts by weight: 0.1 to 0.9 part of furanone, 0.01 to 0.2 part of linalool, 0.001 to 0.5 part of 2, 5-dimethylpyrazine, 0.02 to 0.1 part of geraniol, 0.03 to 0.05 part of beta-ionone and 0.01 to 0.25 part of geranyl acetone. According to the invention, through a unique ratio design, the scorched nut smell of pyrazine compounds, the rich caramel sweet taste of furanone, the stir-fried smoke and fire smell of 2-acetylthiazole and the freshness of geraniol and other terpene alcohols are ingeniously fused, and the complex level of Chinese chestnut fragrance is accurately reproduced. According to the present invention, the edible-grade propylene glycol is adopted as the solvent, such that the solubility, the dispersibility and the stability of the aroma composition in the tea beverage can be effectively improved, the persistence and the uniformity of the aroma release can be significantly improved, the shelf life of the tea beverage product can be easily prolonged, and the market competitiveness of the product can be enhanced.

Provided is an aggregate amount regulator having an excellent aggregate production promoting effect. Use of a compound selected from the group consisting of 4-ethyl-alpha, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta, beta The compound is at least one compound selected from the group consisting of alpha, alpha-dimethyl benzene propionaldehyde, 1-(2-tert-butylcyclohexyloxy)-2-butanol, benzyl benzoate, tricyclodecenyl acetate, trichloromethyl phenyl methyl acetate, geraniol, cyclohexylidene (phenyl) acetonitrile, 1-menthol, linacol, dihydromyrcenol, benzyl salicylate, 4-(5, 5, 6-trimethylbicyclo [2.2. 1] heptane-2-yl) cyclohexanol, and the like.

The invention relates to the technical field of plates and discloses a method for preparing an antibacterial and waterproof composite plate. The method uses mercaptopropionic acid and 2,2-dihydroxymethylpropionic acid as raw materials to prepare a product A, which is reacted with geraniol, nano-silver-loaded titanium dioxide, and tridecafluorooctanol in sequence to obtain bismercaptogeranyl ester, bismercapto nano-silver-loaded titanium dioxide, and bismercapto tridecafluorooctyl ester. The three products are added to polyvinyl chloride for reaction to obtain modified polyvinyl chloride, and the modified polyvinyl chloride is finally added to polyvinyl chloride, chlorinated polyethylene, and dioctyl phthalate and mixed uniformly to obtain an antibacterial and waterproof composite plate. The prepared composite plate has excellent antibacterial properties, waterproof properties, and mechanical properties.

The invention provides litchi essence as well as a preparation method and a preparation device thereof. According to the technical scheme, the preparation method of the litchi essence comprises the following steps: S1, putting linalool, ethyl butyrate and other raw materials into the same container, and sealing and stirring to prepare first premixed essence; s2, putting geraniol, ethyl acetate and other raw materials into the same container, and sealing and stirring to prepare a second premixed essence; s3, adding trans-2-hexenal, gamma-decalactone and other raw materials into the same container, and sealing and stirring to prepare third premixed essence; s4, putting the first premixed essence and the second premixed essence into the same container, and sealing and stirring; and adding the third premixed essence, sealing and stirring to obtain the litchi essence. The lychee essence prepared by the invention has lasting and natural lychee fragrance, and has penetrating power and layering sense. In addition, the invention further provides a preparation device of the litchi essence.

This invention provides a flavoring agent for enhancing the honey-sweet aroma of tobacco, comprising the following raw materials and their mass percentages: 0.2-0.3% 2,3-pentanedione, 0.45-0.55% phenylacetic acid, 0.45-0.55% phenethyl acetate, 0.25-0.4% phenylethanol, 0.45-0.6% methyl phenylacetate, 0.45-0.6% ethyl phenylacetate, 0.5-0.6% menthyl acetate, 0.15-0.25% geraniol, and the balance being propylene glycol. This invention belongs to the field of tobacco flavoring technology. By combining 2,3-pentanedione, phenylacetic acid, and phenethyl acetate in a specific mass ratio and conducting testing and evaluation, a flavoring agent suitable for enhancing the honey-sweet aroma of tobacco has been successfully developed. The composition is clearly defined, significantly improving the honey-sweet aroma of tobacco products, with a rich and long-lasting aroma, and good taste harmony.

The invention provides a method for increasing the content of geranone and furandiene in zedoary turmeric oil, which comprises the following steps: activating secondary metabolism through moderate drought, low temperature or salt stress in a key growth period of zedoary turmeric, and promoting sesquiterpene accumulation; then, phosphorus-potassium fertilizer and zinc-boron trace elements are additionally applied, nitrogen fertilizer is reduced, and the component proportion is optimized; the preparation method comprises the following steps: washing, drying and crushing the rhizome of curcuma zedoary, adding water to infiltrate, extracting crude oil by water vapor, performing reduced pressure distillation and molecular distillation purification, finally filling nitrogen and sealing, and refrigerating at 2-4 DEG C and storing in a dark place. According to the method, the content and extraction rate of target components can be remarkably increased, purity is guaranteed, thermosensitive components are protected, pollution is reduced, and the storage period is prolonged.

The invention discloses a method for catalytically synthesizing a terpenoid perfume raw material by using dehydrogenase, the dehydrogenase ADH1 is derived from Klebsiella HNYJ-1, and the method comprises the following three steps: firstly, obtaining ADH1 through fermentation culture, centrifugal crushing, salting-out and column chromatography purification; then ADH1 is mixed with acrylamide, nano magnetic Fe3O4 and the like, and ADH1 gel magnetic beads are prepared; and finally, constructing a reaction system containing substrates (carvone, geraniol and the like), ADH1 gel magnetic beads and coenzyme NADP < + >, reacting at 40 DEG C, and eluting to collect terpene perfume materials such as carvone, geranial and the like. The method has the outstanding advantages that ADH1 is high in catalytic efficiency, high in specificity and few in by-product; the safety risk of chemical catalysis is avoided by a biological enzyme method, and the product belongs to natural perfume; the process can be amplified in equal proportion and is suitable for industrial production; when the product is added to cigarettes, the aroma can be remarkably improved, offensive odor and irritation are reduced, and the application value is high.

The invention provides digestion associated lactobacillus and application thereof, and belongs to the technical field of microorganisms, and the preservation number of the digestion associated lactobacillus SAAS-B-MRS-2020914-4 is GDMCC (China General Microbiological Culture Collection Center) NO: 65880. The digestion associated lactobacillus SAAS-B-MRS-2020914-4 provided by the invention is a safe strain capable of being used for food, and the geraniol can be produced at high yield; the strain has good growth characteristics in salt brine and vegetable juice, can improve the content of geraniol in fermented vegetables when applied to fermented vegetable products, can significantly improve flavor formation in the maturing process of the fermented vegetable products, endows the products with mild and sweet rose fragrance, can effectively improve the fermentation rate of the fermented products, increases the flavor of the products, and improves the quality of the fermented vegetables. The quality characteristic of the product is improved, and the method has a wide application prospect in the field of fermented vegetable products.

DEPCT6825 / 04 / 2568 A synergistic biological pesticide compound that relies on essential oils. And the terpene component that should be used is geraniol, which has an effect on the Tetranychusurticae composition. The pesticide is active against all stages of mites and has a short estimation time with this mode. Non-toxic action and reduced delivery rate for each component of the inhibitor. Pesticides have been used to fight and control pests in plants; this invention has also provided a method for that. Fighting and controlling pests;

The invention discloses application of a gene RrZFP1 in regulation and control of rose plant flower fragrance, and belongs to the technical field of plant genetic engineering, the nucleotide sequence of the gene RrZFP1 is shown as SEQ ID NO.1, and the amino acid sequence of expression protein of the gene RrZFP1 is shown as SEQ ID NO.2. The RrZFP1 gene of the Fenghua rose is separated, after VIGS in the Chinese rose is silenced, the content of geraniol serving as an important aroma component of a transgenic Chinese rose flower is remarkably reduced, and experiments verify that the RrZFP1 gene can activate RrNUDX1 gene expression of a geraniol synthesis pathway, and indicate that the RrZFP1 is a positive regulation factor of the rose fragrance, and the RrZFP1 gene can be used for preparing the rose essential oil. The important application value is realized in the aspect of regulating and controlling the fragrance of the rosa flowers.

The present invention addresses the problem of providing an alcohol-containing composition in which the irritation of alcohol is reduced. In a composition containing alcohol, linalool and / or geraniol is blended, and cis-3-hexene-1-ol is blended.

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.

An object is to provide a solid composition which is excellent in capability of retaining linalool and geraniol. A solid composition containing linalool d geraniol has dextrin having a molecular weight of 50,000 or more incorporated therein.

The invention discloses a pungent litse fruit essence for beverage and a preparation method thereof, and belongs to the technical field of beverage additives, the pungent litse fruit essence is prepared from the following raw materials in parts by mass: 0.1 part of citronellal, 0.1 part of linalool, 0.05 part of geraniol, 0.1 part of citral, 3 parts of lemon terpenoid removal liquid, 10 parts of pungent litse fruit water-soluble extract, 5 parts of pungent litse fruit fermentation extract, 61.65 parts of ethanol, 10 parts of purified water and 10 parts of propylene glycol. The citronellal, the linalool, the geraniol and the citral are used for providing head fragrance, the lemon terpene-removing liquid is used for providing soft fragrance, the pungent litse fruit water-soluble extract is used for providing main fragrance, the pungent litse fruit fermentation extract is used for providing composite fragrance, so that the fragrance of the pungent litse fruit essence is compounded and rich, and meanwhile, the pungent litse fruit extract is obtained by an ethanol water extraction method, has good water solubility, and can be used for preparing the pungent litse fruit essence. The beverage can be applied to beverages and has unique flavor.

The invention discloses oolong wheat tea and a preparation method thereof, and belongs to the technical field of wheat tea processing. According to the technical scheme, the oolong wheat tea is prepared by blending barley extract liquor and oolong tea extract liquor. The barley fragrance index of the barley extract is greater than 0.1 and less than 0.9; the wheat aroma index is calculated according to the following formula: wheat aroma index = (2-acetylpyrrole + 2-ethylpyrazine + dimethylpyrazine + methylpyrazine) / (5-methylfurfural + 2-acetylfuran + furfural); the tea aroma index of the tea leaves for preparing the oolong tea extract liquor is greater than 2.5; the tea aroma index is calculated according to the following formula: tea aroma index = A / B; the total flower fragrance A is linalool, geraniol, cis-jasmonone, jasmonlactone, nerolidol, methyl jasmonate and indole; the total odor amount B is equal to the sum of cis-2, 4-heptadienal, trans-2, 4-heptadienal and indole. The method is applied to processing of oolong wheat tea, and the problems that the oolong wheat tea is not harmonious in fragrance, poor in palatability and prone to precipitation are solved.

The invention relates to a tobacco flavor with glutinous rice fragrance and tea fragrance flavor and application of the tobacco flavor. The tobacco flavor is prepared from the following components: glutinous rice fragrance tea leaf essential oil, 2-carene, 2-propionyl-3, 4, 5, 6-tetrahydropyridine, 2-acetyl-3, 4, 5, 6-tetrahydropyridine, geraniol, 2-propionyl-1, 4, 5, 6-tetrahydropyridine, piperidine-2-ethyl formate and linalool. The sticky rice fragrance tea leaf essential oil and seven specific spice components are creatively combined to form the mixed spice, compared with single sticky rice fragrance tea leaf essential oil serving as spice, all the components in the mixed spice are matched and synergistic, sticky rice fragrance and tea fragrance are provided when cigarettes are smoked, the fragrance coordination of the cigarettes is obviously improved, and the flavor of the cigarettes is improved. The smoke characteristic of the cigarette is improved; after the spice is used for slow release treatment, the stability of glutinous rice fragrance and tea fragrance flavor can be maintained when cigarettes are smoked, and the flavor of the spice cannot be changed due to the change of the original proportion of the components in the slow release process, so that the sensory quality of tobacco products is comprehensively improved.

The invention discloses a bifunctional chitosan oligosaccharide derivative based on phenylboronic acid and geraniol as well as a preparation method and application of the bifunctional chitosan oligosaccharide derivative. Comprising the following steps: successfully covalently linking geraniol molecules to a chitosan oligosaccharide skeleton by adopting a bromide-mediated grafting technology, so that the water solubility of geraniol is remarkably improved. Through EDC / NHS mediated amidation reaction, a phenylboronic acid group is introduced into the geraniol-chitosan oligosaccharide derivative, and a novel derivative with dual functions is constructed. The derivative not only maintains good water solubility of chitosan oligosaccharide, but also significantly enhances antibacterial activity. Compared with geraniol-chitosan oligosaccharide derivatives, the phenylboronic acid functional modification enables the product to show excellent targeted recognition capability on bacteria, and efficient bacteriostasis can be realized at low concentration. The preparation method is simple and convenient in process, the raw materials are easy to obtain, the product is easy to purify, and a new idea is provided for functional modification of chitosan oligosaccharide. The multifunctional derivative has a wide application prospect in the fields of food preservation, medical antibiosis and the like, and has an important industrialization value.

To provide a pharmaceutical and food compositions that appropriately ameliorate reduction of a blood albumin value, anemia symptom or the like which is a symptom of frailty.SOLUTION: A frailty preventive and ameliorating agent has geraniol as an active ingredient.SELECTED DRAWING: None

The invention discloses an extraction head for detecting geraniol, the extraction head is a composite material of polymerized 3-amino-9-ethyl carbazole-pyrrole-IL, and the IL is 1-butyl-3-methylimidazolium hexafluorophosphate. Therefore, after the 3-AN-9-NECA and the PY are copolymerized, the conductivity of the polymerized 3-AN-9-NECA is greatly improved, the copolymerized extraction head coating is relatively thick and compact in structure, and a target substance can be effectively adsorbed for detection. Meanwhile, in order to improve the performance of the extraction head, imidazole IL: 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIm] [PF6]) is doped into the copolymerized 3-AN-9-NECA-PY coating, and the composite coating is prepared and used for headspace extraction of geraniol. The prepared composite coating has good durability and stability. Compared with a common polymerized 3-AN-9-NECA coating and a pyrrole coating, the composite coating has the advantage that the coating modified by adding the ionic liquid also shows higher extraction efficiency.

The invention provides a screening method of a camellia sinensis variety suitable for processing. Comprising the following steps: S1, processing fresh leaves of a tea tree variety to be screened into a ground tea sample; s2, measuring the content of theanine, caffeine, catechin, linalool, geraniol and ligustral in the camellia sinensis sample. The screening method for the camellia sinensis varieties suitable for processing systematically solves the problems that in camellia sinensis variety screening, a traditional method is single, and key quality components cannot be analyzed clearly through combination of multiple omics technologies.

The invention provides a depolymerization method of impurities in a floridin reaction liquid and a preparation method of floridin, and the specific steps are as follows: the floridin reaction liquid containing polyisovaleraldehyde is subjected to a depolymerization reaction under the catalytic action of a loaded MgO / Beta molecular sieve to obtain a floridin depolymerization reaction liquid basically containing no polyisovaleraldehyde, and the floridin depolymerization reaction liquid containing no polyisovaleraldehyde is subjected to a depolymerization reaction under the catalytic action of a loaded MgO / Beta molecular sieve. And separating the catalyst in the depolymerization reaction liquid, and carrying out optional refining to obtain a white flower alcohol product. The method disclosed by the invention has the advantages of mild conditions, no solvent, simple process, high depolymerization rate, no influence on the yield of the white flower alcohol, obvious improvement on the fragrance of the product and the like.

The invention relates to the technical field of synthetic biology, in particular to a saccharomyces cerevisiae recombinant strain with high gene copy integration and high geraniol yield as well as a construction method and application of the saccharomyces cerevisiae recombinant strain. According to the method, the copy number of geraniol synthase genes is increased through a saccharomyces cerevisiae gene multi-copy integration technology, efficient and stable expression of the geraniol synthase genes is achieved, supply of geraniol precursors is improved by further combining the modes of blocking a precursor competitive pathway and the like, a saccharomyces cerevisiae recombinant strain capable of efficiently and stably synthesizing geraniol is constructed, and the method is suitable for large-scale production of geraniol. Restriction factors of synthesis of geraniol by saccharomyces cerevisiae are removed, and the recombinant strain has high genetic stability and good environmental protection property. The recombinant strain constructed by the invention can be used for efficiently synthesizing geraniol and derivatives of geraniol, and is applied to essence, fragrance and food industries.

The invention discloses a facultative anaerobic bacillus altitudinis strain and an application thereof in tobacco, the facultative anaerobic bacillus altitudinis strain ZY02-1 is classified and named as Bacillus altitudinis, the strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.33916. The invention further discloses a preparation method of the facultative anaerobic bacillus altitudinis strain. The strain is a facultative anaerobic bacterium, can be fermented under two conditions of an aerobic environment and an anaerobic environment, can promote combined nicotine to be converted into free nicotine in a low-oxygen environment, increases the nicotine content of tobacco stems, effectively accelerates decomposition of aroma precursors such as polyphenols and terpenes in the tobacco stems, effectively increases aroma substances of the tobacco stems, and has the advantages of high yield, high yield and the like before re-drying. The bacillus altitudinis ZY02-1 is applied to moisture regaining tobacco stems for stacking fermentation, offensive odor of the fermented tobacco stems is reduced, aroma quality, aroma quantity and concentration are improved, nicotine, megastigmatrienone, geraniol and alpha-pinene are remarkably increased, and aroma components such as alpha-cedrene and ocimene are added.

The application provides a preparation method of a cowpea leafhopper repellent and application thereof, and belongs to the technical field of green prevention and control of agricultural pests. The preparation method is as follows: activated biochar obtained by microwave pyrolysis of straw powder and activated by phosphoric acid is mixed with intercalated montmorillonite-PVA compound obtained by intercalating aluminum ions into montmorillonite and modifying the intercalated montmorillonite with polyvinyl alcohol, and then the mixture is modified with KH-550 to obtain a supported controlled-release carrier; linalool, geraniol and methyl salicylate are loaded on the supported controlled-release carrier to prepare a core; trans-2-hexenal and trans-2-octenal are loaded on the core to prepare a core-shell structure microsphere; the core-shell structure microsphere is coated with poly-N-isopropyl acrylamide to prepare a multi-stage controlled-release microsphere; and the multi-stage controlled-release microsphere is used to prepare the cowpea leafhopper repellent for preventing and controlling cowpea leafhoppers. The application improves the loading capacity and adsorption stability of active components, and improves the compatibility with the wax layer of cowpea leaves. The preparation of the application shows fast effect and long persistence.

The invention provides natural alcohol modified polyacrylate as well as a preparation method and application thereof. The preparation method comprises the following steps: firstly, dissolving acrylic anhydride and 4-dimethylaminopyridine in tetrahydrofuran; adding menthol into the solution to carry out esterification reaction; sequentially adding acrylic acid and ammonium persulfate to carry out polymerization reaction; after the reaction liquid is cooled, sequentially adding N, N-dicyclohexylcarbodiimide and 4-dimethylaminopyridine, and then adding geraniol to carry out esterification reaction; and finally, carrying out filtration, rotary evaporation, extraction and dialysis to obtain the natural alcohol modified polyacrylate. The natural alcohol modified polyacrylate disclosed by the invention has high antibacterial activity and excellent bacterial adhesion resistance; the preparation method is simple, convenient to operate, good in controllability, low in treatment equipment requirement and beneficial to industrial production; the natural fiber fabric can be endowed with good antibacterial property, bacterial adhesion resistance and durability, and has a wide application prospect.

This invention discloses an antibacterial and mosquito-repellent composite material based on plant extracts, its preparation method, and a latex paint. The method includes: providing a zinc ion solution and an alkaline precipitant solution, wherein the alkaline precipitant solution is selected from at least one of sodium hydroxide solution, potassium hydroxide solution, or ammonia water; mixing and reacting the zinc ion solution and the alkaline precipitant solution, controlling the final pH value of the reaction to be 8-11, and then post-processing to obtain nano-zinc oxide particles; dispersing the nano-zinc oxide particles in an L-cysteine ​​solution, adding a stabilizer to obtain an L-cysteine-modified nano-zinc oxide dispersion; adding β-alanine and plant extracts to the nano-zinc oxide dispersion, homogenizing and drying to obtain the antibacterial and mosquito-repellent composite material; wherein the plant extract is selected from at least one of thymol or geraniol, nocaketone, physalisol, citronella oil, and lemon eucalyptus oil, combined with thymol. This invention can produce an antibacterial and mosquito-repellent composite material with long-lasting antibacterial and mosquito-repellent effects.

This invention relates to a method for improving tobacco stem extract using multi-strain synergistic fermentation and its application. The method includes: (1) inoculating Bacillus subtilis and Bacillus kochia into a culture medium containing tobacco stem extract for fermentation to obtain a primary fermentation broth; (2) inoculating Saccharomyces cerevisiae (producing phenylethanol) and Yersinia geraniolata (producing geraniol lipolysin) into the primary fermentation broth for further fermentation to obtain an improved tobacco stem extract. This invention creatively provides a method for improving tobacco stem extract using multi-microorganism synergistic fermentation. This method effectively degrades macromolecular components such as cellulose, hemicellulose, pectin, and starch in the tobacco stem extract while increasing the content of aroma components in the tobacco stem extract. This significantly reduces the off-flavors and irritation of the treated improved tobacco stem extract, improves its sensory quality, and significantly enhances its reclaiming value.