493 results about "Bacteriostatic agent" patented technology

The invention provides a lactobacillus pentosus and a preparation method and application of bacteriocin of the lactobacillus pentosus. The name of the strain is lactobacillus pentosus YCL31, and the strain is preserved in Guangdong Microbial Culture Collection Center (GDMCC) on June 25, 2025, the preservation address is the 5th floor of the building 59, No. 100 courtyard, Xianlie Middle Road, Guangzhou, and the preservation number is GDMCC No: 66589. The bacteriocin separated and purified from the metabolite of the bacterium can destroy the morphological structure of the vibrio parahemolyticus and inhibit the toxicity of the vibrio parahemolyticus, can also achieve the effect of remarkably inactivating the vibrio parahemolyticus in a metapenaeus ensis system, can effectively delay the spoilage of the metapenaeus ensis, and has a good application prospect as a bacteriostatic agent or preservative. Therefore, development and application of the novel bacteriocin have important reference value in related fields.

The invention relates to the technical field of aquaculture, in particular to nile tilapia ferritin, a preparation method and application thereof and a bacteriostatic agent. The amino acid sequence of the nile tilapia ferritin is as shown in SEQ ID No.1, and the nile tilapia ferritin inhibits streptococcus agalactiae and / or aeromonas hydrophila. The invention provides Nile tilapia ferritin, and in-vitro experiments prove that the recombinant protein can effectively inhibit proliferation of pathogenic bacteria. A further in-vivo experiment research result shows that the ferritin heavy chain (Nile tilapia ferritin) has important functions of inhibiting pathogenic bacterium proliferation and improving the survival rate of an organism, and plays an important role in immune protection of the organism.

The invention discloses an oral care composition and a preparation method thereof, the oral care composition comprises a friction agent, a periodontal repair agent, a thickening agent, a humectant and a foaming agent, the friction agent comprises a dental plaque release agent, and the dental plaque release agent is configured to destroy a bacterial extracellular polysaccharide matrix in dental plaque; the periodontal repair agent comprises at least one of the following components: an inflammation inhibitor, a tissue repair promoter, a mucous membrane stimulation alleviator and a bacteriostatic agent. The oral care composition contains the dental plaque release agent and the periodontal repair agent, and can synergistically improve periodontal health.

The invention provides an alginate fiber sanitary towel and a preparation method thereof, and belongs to the technical field of nursing materials. Through the directional water-repellent design of the double-sided reverse osmosis prevention functional layer and in combination with the three-dimensional leakage-proof partition edge structure, the risks of liquid back seepage and side leakage are remarkably reduced, and the use dryness and reliability are improved; the natural antibacterial effect of the alginate fibers is utilized, efficient peculiar smell control is achieved, irritation of traditional chemical bacteriostatic agents to the skin is avoided, and biological safety is guaranteed; the core material adopts alginate fiber renewable resources, the characteristics of high water absorption and degradability of the alginate fiber absorber are combined, the environmental protection sustainability of the product is enhanced, the common problems of reverse osmosis, side leakage, dependence on chemical addition and the like of the sanitary towel are solved, meanwhile, the unification of the protection performance, the health attribute and the sustainability is achieved through material and structure innovation, and the sanitary towel is suitable for being used for sanitary napkins. And a technical normal form capable of being flexibly expanded is provided for the industry.

The invention relates to the technical field of microorganisms, in particular to penicillium LDFST10 and application of the penicillium LDFST10 in promoting plant growth or preventing and treating stem rot. The preservation number of the penicillium LDFST10 is CGMCC (China General Microbiological Culture Collection Center) No. 41960. The application comprises the step of applying the penicillium LDFST10 or the fermentation product thereof to rhizosphere soil of the plant so as to promote the growth of the plant and prevent and treat basal stem rot. The invention researches and screens out the penicillium frutescens LDFST10 capable of promoting plant growth and inhibiting various pathogenic bacteria of stem rot, various growth promoting preparations or bacteriostatic agents or drugs aiming at the stem rot can be developed on the basis of the penicillium frutescens, and the penicillium frutescens LDFST10 has important value in the planting field of various crops such as corn, wheat and the like.

The invention relates to bacteriostatic bentonite cat litter and a preparation method thereof, and belongs to the technical field of pet supplies. The bacteriostatic bentonite cat litter sequentially comprises a sodium bentonite matrix embedded with a bacteriostatic agent, a metal oxide layer and a biological membrane layer from inside to outside, the sodium bentonite matrix is obtained by mixing and aging bentonite and a sodium modifying agent in a solvent. When the biological membrane is in contact with excrement, the outer-layer biological membrane preferentially blocks liquid permeation, the middle-layer nano ZnO still generates active oxygen in a weak light environment, and the inner-layer Ag < + >-loaded zeolite slowly releases and inhibits bacteria, so that the antibacterial persistence can be improved. The bacteriostatic bentonite cat litter disclosed by the invention is remarkable in deodorization and antibacterial effects, does not stick to hands when being used, does not generate dust, and has relatively strong caking performance.

The invention belongs to the technical field of packaging materials, and particularly relates to a packaging material with antibacterial activity and a preparation method thereof. The packaging material with antibacterial activity is prepared from the following raw materials in parts by weight: 60 to 70 parts of polylactic acid, 10 to 20 parts of poly (butylene succinate), 3 to 5 parts of modified montmorillonite, 0.5 to 1 part of a bacteriostatic agent, 0.5 to 1 part of a lubricating agent, 1 to 3 parts of a compatilizer and 1 to 1.5 parts of functional filler. The packaging material provided by the invention has excellent barrier property, antibacterial property and mechanical property, stable fixation and synergistic interaction of functional components such as the modified montmorillonite and the functional filler are realized, and the packaging material has important significance in promoting technical progress of the packaging industry and meeting the requirements of the market on high-performance packaging materials.

The invention relates to the technical field of oral medical materials, and particularly provides a macromolecular denture adhesive and a preparation method thereof.The denture adhesive is prepared from, by mass, 40-45 parts of oil phase matrix; 50 to 55 parts of an adhesive; 1 to 2.5 parts of a reinforcing agent; 0.1 to 1 part of a bacteriostatic agent; 0.1 to 1 part of an auxiliary material; wherein the reinforcing agent comprises calcium carbonate; the oil phase matrix comprises white oil and vaseline, and the mass ratio of the white oil to the vaseline is (0.8-1): 1. The eggshell powder is used as a natural filling forming viscosity enhancer, so that the bonding strength of the false tooth adhesive can be remarkably improved, and the high requirement of a patient on false tooth stability is met.

The invention belongs to the field of microorganisms, and discloses bacillus velezensis and application thereof in prevention and treatment of plant fungal diseases. The bacillus velezensis disclosed by the invention is bacillus velezensis YC46, is preserved in the China General Microbiological Culture Collection Center (CGMCC), and has the preservation number of CGMCC No.33975. The bacillus velezensis can grow by taking leftovers in an aquatic product processing process as a unique nutrient source, and has the advantages of high yield, low cost and the like. The bacillus subtilis has the antibacterial activity on plant pathogenic fungi such as fusarium oxysporum, botrytis cinerea, alternaria alternata, colletotrichum gloeosporioides and penicillium, thalli or fermentation products of the thalli can be used as active ingredients for preparing biocontrol microbial agents or bacteriostatic agents for preventing and treating plant fungal diseases, and the bacillus subtilis has good application value and ecological environmental protection value.

The invention provides a bacteriostatic agent aiming at yersinia enterocolitica and application, the bacteriostatic agent comprises a compound solution of lipoic acid and protocatechualdehyde, and when the lipoic acid and the protocatechualdehyde act synergistically, the minimum inhibitory concentrations to the yersinia enterocolitica are 0.625 mg / mL and 0.3125 mg / mL respectively. The yersinia enterocolitica biofilm is inhibited and / or removed through the lipoic acid and protocatechuic aldehyde compound liquid, and the problem that drugs for treating the yersinia enterocolitica infection are prone to drug resistance is solved.

The present application provides a kind of cosmetic composition for acne and its preparation method, it is related to the technical field of cosmetics.The cosmetic composition comprises by mass percentage 0.01-2.0% of acacia gum, 0.01-2.0% of sphingomonad ferment product extract, 0.01-10% of exfoliating agent, 0.01-1.0% of oil control agent, 0.001-0.005% of bacteriostatic agent, 0.01-2.0% of anti-inflammatory agent and 0.01-2.0% of soothing and repairing agent; the balance is cosmetic base; wherein the exfoliating agent includes one or more of coated multi-fruit acid, coated azelaic acid and coated salicylic acid; the anti-inflammatory agent includes 100 and 1609; and the soothing and repairing agent includes 100, which solves the technical problems of difficult thickening, insufficient mildness and insufficient refreshing after absorption of acne-removing products.

The invention relates to the technical field of culture media, and particularly discloses a candida chromogenic culture medium as well as a preparation method and application thereof. The candida chromogenic culture medium disclosed by the invention is prepared from the following components in concentration: 10 to 11 g / L of peptone, 12 to 17 g / L of agar, 7 to 9 g / L of glucose, 1 to 2 g / L of chromogenic substrate and 0.4 to 0.6 g / L of bacteriostatic agent, the chromogenic substrate is formed by mixing heavy 4-nitrophenyl-N-acetyl-beta-D-galactosamine and 4-methylumbelliferone-beta-D-N-acetyl galactosamine, and the chromogenic substrate is formed by mixing heavy 4-nitrophenyl-N-acetyl-beta-D- The bacteriostatic agent is prepared by mixing chloramphenicol, taurocholic acid and nalidixic acid. When being used for detecting and identifying candida albicans, candida tropicalis, candida krusei and candida glabrata, the chromogenic culture medium provided by the invention has strong specificity, short identification time and wide practical application value.

The application discloses a pH-responsive degradable composite bacteriostatic film derived from waste bone powder extract and a preparation method thereof. The main components of the film are collagen and hydroxyapatite extracted from waste bone powder, citric acid monohydrate-betaine and lactic acid-betaine eutectic solvent, and in addition, purple corn anthocyanin is used as a pH response agent, and citric acid monohydrate-betaine eutectic solvent is used as a crosslinking agent and a bacteriostatic agent. In the preparation process, collagen and hydroxyapatite are mixed with an aqueous solution of eutectic solvent and heated, and after the system is reduced to room temperature, the anthocyanin aqueous solution is added, mixed, and ultrasonic defoaming is performed, then the film forming liquid is poured into a clean mold, vacuum dried, and cooled to remove the film. The pH-responsive degradable composite film prepared based on the above method has good properties, not only has the characteristics that the overall color changes with the microenvironment pH, but also has good mechanical strength, bacteriostasis and degradability, and has wide application potential in many fields such as food preservation.

The invention discloses an anti-aging agent for prolonging the service life of a foam extinguishing agent and a preparation method and application thereof, and belongs to the technical field of fire-fighting foam extinguishing agents. The preparation method comprises the following steps: stirring and mixing an alcohol antifreezing agent and urea according to a certain mass ratio at room temperature to obtain a component I; adding a metal ion stabilizer into the component I, heating in a water bath to a reaction temperature, and fully stirring and mixing to obtain a component II; cooling the component II to room temperature, continuing to add the anti-corrosion bacteriostatic agent, fully stirring to obtain a component III, and adding monopotassium phosphate to adjust the pH value to 7.2-8.2 to obtain the anti-aging agent. The anti-aging agent and a finished product foam extinguishing agent stock solution are added and mixed uniformly according to the mass ratio of 1: 9. The anti-aging agent can also be directly added in the production process of the foam extinguishing agent, and the adding proportion is that the mass ratio of the anti-aging agent to the sum of other raw materials is 1: 9. The problem that the foam extinguishing agent is short in service life can be effectively solved, and the storage life of the foam extinguishing agent is prolonged.

The invention relates to the technical field of building coatings, in particular to a formula and preparation method of a mildew-proof coating in a high-temperature and high-humidity environment, and the preparation method comprises the following steps: putting fluorocarbon resin, pigment and titanium dioxide filler into a stirrer, stirring and mixing to obtain a first mixture; determining the addition amount of the mixed additive to add the mixed additive into the first mixture, and continuously stirring to obtain a second mixture; determining whether the dispersity of the mixture reaches the standard or not, and supplementing a mixing aid based on a result that the dispersity does not reach the standard; determining the dispersion stability characteristic value of the second mixture based on the volume of the settling layer, and determining the filtering pressure to remove impurities to obtain uniform slurry; determining the total addition amount of a biological mildew-proof bacteriostatic agent, and adding the biological mildew-proof bacteriostatic agent into the uniform slurry at a preset addition rate; and packaging the uniform slurry to obtain the mildew-proof coating finished product. The problem that the biological mildew preventive is difficult to fuse with the coating is solved.

The invention provides a bacteriostatic agent containing an agilawood leaf extracting solution for inhibiting vibrio alginolyticus and application of the bacteriostatic agent, and relates to the field of plant extracts. The bacteriostatic agent disclosed by the invention is an agilawood leaf extracting solution; the agilawood leaf extracting solution is prepared by adding water into agilawood leaves, crushing and extracting, and the material-liquid ratio of the agilawood leaves to the water is 1g: (2-4mL); the agilawood leaf extracting solution is used for inhibiting vibrio alginolyticus. The preparation method of the agilawood leaf extracting solution comprises the following steps: taking agilawood leaves, adding water, crushing into homogenate, filtering to remove impurities, centrifugally separating, collecting supernate, and sterilizing to obtain the agilawood leaf extracting solution. The minimum inhibitory concentration of the agilawood leaf extracting solution prepared by the invention on vibrio alginolyticus is 15.63 mg / ml. The agilawood leaf extracting solution prepared by the invention can well inhibit vibrio alginolyticus, is used for preparing a bacteriostatic agent for inhibiting vibrio alginolyticus, avoids the risk of drug-resistant genes, has no risk of organic solvent residue, and has the advantages of high efficiency, risk reduction, cost reduction and the like.

This invention relates to the field of disinfection device technology, specifically to an air sterilizer that facilitates the addition of biological antibacterial agents. The device includes a base, a filter cartridge detachably mounted on the upper end of the base, a top cover plate detachably mounted on the upper end of the filter cartridge, an exhaust motor fixedly mounted on the inner end of the top cover plate, exhaust blades rotatably mounted on the inner end of the top cover plate, a support cylinder fixedly mounted on the inner end of the base, and multiple output cylinders fixedly mounted on the surface of the support cylinder. A suction device for extracting the biological antibacterial agent is provided between the support cylinder and the storage cylinder. This device uses the exhaust motor to drive the exhaust blades to form a stable airflow, and utilizes the linkage structure of the central tube, crown gear, and passive cylinder to actively bring the refined biological antibacterial agent into the air circulation channel. The biological antibacterial agent is forced to be transported into the filter cartridge under the action of the airflow and discharged with the airflow, thereby significantly improving the diffusion speed and coverage of the biological antibacterial agent in the air.

The invention relates to a bacteriophage, in particular to a cross-host multivalent bacteriophage and preparation and application of a bacteriostatic agent of the bacteriophage, the multivalent bacteriophage is preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 2026045. The salmonella bacteriophage CCTCC NO: M 2026045 is found for the first time, is a multivalent bacteriophage, can cross-host infect and split multiple important livestock and poultry intestinal pathogens such as salmonella, escherichia coli, shigella, klebsiella pneumoniae and proteus mirabilis, solves the problem of narrow host range of a single bacteriophage, and improves the prevention and control efficiency. By inhibiting the overgrowth of the gram-negative pathogenic bacteria, the intestinal microecological balance can be regulated, so that the aim of effective prevention and control is fulfilled.

The invention belongs to the technical field of food bacteriostatic agents, and particularly relates to a composite natural bacteriostatic agent and a preparation method and application thereof. The bacteriostatic agent comprises the following components in parts by weight: 2-4 parts of garlic powder, 1-3 parts of tea polyphenol and 1-3 parts of pediococcus pentosaceus freeze-dried powder. The natural plant source antibacterial components (garlic powder and tea polyphenol) and the microbial source antibacterial component (pediococcus pentosaceus freeze-dried powder) are scientifically compounded, so that a remarkable antibacterial effect is generated, and particularly, a high-efficiency inhibition effect is achieved on common putrefying bacteria (bacillus subtilis) and pathogenic bacteria (staphylococcus aureus) in meat prefabricated food.

The present invention discloses a composition for stabilizing biological sample genetic information material, which comprises a protein denaturant, a bacteriostatic agent and a dispersant selected from at least one of alcohol ether or polyether or a combination thereof, the alcohol ether or polyether has a structure consisting of one polyhydric alcohol or two or more polyhydric alcohols forming ether bonds with each other, and is water-miscible, and the composition essentially does not contain a substance with a flash point lower than 60 DEG C.

The invention relates to the field of detergents, and discloses a laundry detergent composition with an efficient bloodstain removal function and a preparation method thereof, the laundry detergent composition comprises an amino acid surfactant, a sulfonic acid group-containing surfactant, other surfactants, 0.5-2% of a chelating agent, 0.1-1% of protease, 0-1% of a bacteriostatic agent, and a solvent; wherein the total mass of the surfactant accounts for 10-30% of the composition; and the amino acid surfactant accounts for 10-60% of the total mass of the surfactant. On one hand, through the synergistic effect of the chelating agent, the amino acid type surfactant and the protease, the old bloodstain removal effect can be remarkably improved; on the other hand, through the synergistic effect of the surfactant containing the sulfonic acid group and the diclosan, the long-acting antibacterial activity of the diclosan can be enhanced.

This invention discloses a carbetocin injection solution and its preparation process. The raw materials for the carbetocin injection solution include at least carbetocin, methionine, disodium edetate, an antibacterial agent, a pH adjuster, and a solvent. The pH of the carbetocin injection solution is 4.0-4.5. The concentration of carbetocin is 50 μg / ml-80 μg / ml, the concentration of methionine is 10 mg / ml-20 mg / ml, the concentration of disodium edetate is 5 mg / ml-10 mg / ml, and the concentration of the antibacterial agent is 2 mg / ml-3 mg / ml. By controlling the concentrations of carbetocin, methionine, disodium edetate, and the antibacterial agent, and simultaneously adjusting the pH of the injection solution to 4.0-4.5, this invention eliminates the need for nitrogen purging during the preparation process, thereby enabling the prepared carbetocin injection solution to exhibit high antioxidant properties and stability, allowing for long-term storage at room temperature.

The application belongs to the technical field of microorganisms, and specifically discloses a methanol phase extract of fruit of Phyllanthus emblica and application thereof. The methanol phase extract PeME is extracted from the fruit of Phyllanthus emblica by a methanol-chloroform extraction method, and a purified component PeME-F3 is obtained by further separation and purification of the methanol phase extract. The methanol phase extract PeME and the purified component PeME-F3 can inhibit Vibrio cholerae and Staphylococcus aureus, and can be used as bacteriostatic agents. The methanol phase extract of the fruit of Phyllanthus emblica can inhibit contamination of Vibrio cholerae and Staphylococcus aureus in crucian carp and Penaeus vannamei stored at low temperature, and can be applied to aquatic products; the methanol phase extract can also be used for preparation of food or medicine, and the prepared food or medicine also has the bacteriostatic effect.

The present invention relates to the field of biological fermentation application technology, and in particular, to use of a milk peptide fermentation product in regulating skin microecological balance. The milk peptide fermentation product selectively regulates the growth of Staphylococcus epidermidis and inhibits the growth of Staphylococcus aureus and Escherichia coli. It was discovered for the first time that the milk peptide fermentation product has a selective bacteriostatic effect on skin microorganisms. The experimental results show that the milk peptide fermentation product has an inhibitory effect on Escherichia coli and Staphylococcus aureus, but has no effect on the normal growth of Staphylococcus epidermidis. This characteristic is obviously different from common broad-spectrum chemical bacteriostatic agents, and the use of the milk peptide fermentation product is more conducive to maintaining the balance of skin microbiota.

The invention provides a combined bacteriostatic agent and application thereof in a culture medium for tissue culture. The combined bacteriostatic agent is prepared from the following components: ethylicin, carbendazim and metasine, and the mass ratio of ethylicin to carbendazim to metasine is 1: 4: 4 in sequence. According to the method, the combined bacteriostatic agent containing ethylicin, carbendazim and metasine components is adopted for doubling and seedling formation of the corn immature embryos, the pollution rate is reduced, the economic loss is reduced, the plant tissue culture cost is reduced, and the haploid breeding production engineering level is improved.

The invention discloses steady-state tea-fragrance low-salt cured beef and a preparation method thereof, and relates to the field of food. In order to solve the problems of non-uniform permeation of tea fragrance, serious loss in processing and storage processes and imbalance between the tea fragrance and the original taste of beef in the tea-flavored cured beef, the low-salt cured beef comprises 1000 parts of beef, 2-5 parts of a Yunnan black tea compound, 20-30 parts of compound salt, 0.05-0.15 part of a bacteriostatic agent, 1.5-2.5 parts of a fermentation inoculant and 0.3-0.8 part of an auxiliary material. According to the invention, a Yunnan black tea functional compound formula system is combined with a three-stage gradient targeted pickling process and a gradient temperature-control humidity-control air-drying fermentation process to prepare the cured beef. Through precise matching of sequential auxiliary material addition and process parameters, the purposes that the salt addition amount is reduced by 40% or above compared with a traditional process, the tea polyphenol processing retention rate and the viable count content of probiotics in a final product are remarkably increased, the production period is shortened compared with the traditional process, and the defective rate is reduced are achieved. The product has health properties, harmonious flavor and excellent shelf life stability, and is suitable for industrial large-scale production.

The invention relates to the technical field of pharmaceutical preparations, in particular to application of phencycloqualinium bromide as an antibacterial active component and a preparation of the phencycloqualinium bromide. It is found that benzene ring quinaldinium bromide can be used as an antibacterial active component and has an inhibiting effect on various common bacteria and fungi (including but not limited to staphylococcus aureus, pseudomonas aeruginosa, escherichia coli, aspergillus niger, candida albicans and the like); triethanolamine or other bacteriostatic activity enhancers are mixed with the phencycloqualinium bromide, so that the bacteriostatic activity of the phencycloqualinium bromide can be remarkably improved; when a benzene ring quinaldinium bromide related preparation is prepared, other bacteriostatic agent components are not added, a good bacteriostatic effect can still be achieved, and the safety is higher.

The application discloses a bocachito Nat10 antibacterial peptide, a coding sequence and use and a preparation method thereof, and relates to a method based on multiomics, a biological big data based on multiomics data of bocachito, screening and identifying an antibacterial peptide precursor gene sequence, and obtaining an amino acid sequence of the bocachito Nat10 antibacterial peptide through translation design, as shown in SEQ ID NO: 3. Through activity simulation prediction and in-vitro experiment verification, the bocachito Nat10 antibacterial peptide shows inhibitory effects on the growth activities of Streptococcus agalactiae, Salmonella enteritidis, Staphylococcus aureus, Vibrio anguillarum and Escherichia coli, especially on Staphylococcus aureus, and shows the best antibacterial effect at a concentration of 2.5 micromoles per liter. The bocachito Nat10 antibacterial peptide can be used for preparing various bactericidal preparations, including bacteriostatic agents, medicines or additives, and has good practical value and social ecological benefits.

The invention relates to the technical field of nursing, and discloses a bio-based material-containing mesoporous silica oil-control fluffy composition, which comprises the following components: polyglycerol fatty acid esters, a cationic polymer, mesoporous silica, a fat-soluble freshener, a bacteriostatic agent, an anti-inflammatory agent, a scalp oil secretion inhibition composition and the balance of pure water. The care composition disclosed by the invention can realize oil-controlling and fluffy effects from multiple aspects, each raw material plays a beneficial role in oil-controlling and fluffy effects, and the matching of the polyglycerol fatty acid esters, the water-insoluble and soluble organic acids and salts thereof can improve the oil-controlling and fluffy effects of the oil-controlling and fluffy effects of the oil-controlling and fluffy effects. The composition can selectively remove unwanted peroxidized cortex and reduce the removal degree of lipid and moisture of skin, can control grease secretion, improve scalp water-oil balance and avoid entering a'grease control 'vicious circle, and can protect scalp health while controlling grease secretion and keeping scalp fresh and cool.

The invention discloses application of a natural bacteriostatic agent in inhibition of salt-tolerant cladosporium in a tea beverage and the tea beverage, and relates to the technical field of food additives, and the natural bacteriostatic agent in the application comprises at least one of citral, smoked plum and ginger extract. In the technical scheme of the invention, any one of citral, smoked plum and ginger extract is independently added into the tea beverage obtained by a sterilization canning technology, so that the propagation of salt-tolerant cladosporium can be effectively inhibited; meanwhile, two or three of citral, smoked plum and ginger extract are added into the tea beverage to synergistically inhibit propagation of salt-tolerant cladosporium, so that the dosage of a natural bacteriostatic agent is reduced, and the taste of the tea beverage is improved.