48results about How to "Expand the antibacterial spectrum" patented technology

The Chinese herbal medicine germicide is prepared with ten kinds of Chinese medicinal materials including cocklebur fruit, phellodendron bark, cnidium fruit, flavescent sophora root, alum, etc. in certain weight proportion. The Chinese herbal medicine germicide has broad spectrum bacteriostasis activity and high safety on plant and human body, and may be used widely in producing green food material.

The invention provides a bactericidal and anti-bacterial type tableware detergent. The bactericidal and anti-bacterial type tableware detergent is prepared from the following raw materials by weight: 11%-16% of sodium fatty acid methyl ester sulfonate, 8%-12% of alcohol ether carboxylate, 6%-11% of alkyl glycoside, 4%-8% of a bamboo vinegar liquid, 3%-6% of coconut oil fatty acid monoethanolamide, 3%-5% of jasmine extract, 1%-3% of tea saponin, 1%-3% of sodium polyaspartate, 0.8%-3.0% of sodium gluconate, 0.5%-2.5% of salt, and the balance being distilled water. The tableware detergent provided by the invention has significant bactericidal and anti-bacterial effects, can be degraded easily, is safe, environment-friendly and mild, as a maintenance effect for skins, and does not damage the skins.

Belonging to the technical field of disinfection, the invention discloses a skin disinfection gel to solve the disadvantages of existing disinfection technologies, especially preoperative disinfection technologies. The skin disinfection gel is composed of the following active components by mass: 1.5%-6% of chitosan, 1.5-10% of chitosan oligosaccharide, 2%-8% of baicalin, 0.5%-2% of chlorhexidine, 0.5%-1.5% of sodium alginate, 2%-5% of agarose, and 1.5%-5% of a mint extract. And the disinfection effect is good. The disinfection gel disclosed in the invention can be used for hand disinfection or skin disinfection in sanitary disinfection or preoperative disinfection, and with excellent disinfection effects and lasting function, it has very good application prospects and economic benefits.

The invention discloses a water-soluble compound antibacterial agent and its preparation method. Antibacterial active ingredients of the water-soluble compound antibacterial agent are composed of a garlic extract product, a cordate houttuynia extract product, a tarragon extract product, a chrysanthemum extract product, a folium eriobotryae extract product, a lophatherum gracile extract product and a folium cortex eucommiae extract product. Garlic, cordate houttuynia, tarragon, chrysanthemum, folium eriobotryae, lophatherum gracile and folium cortex eucommiae which have different degrees of inhibiting effects on bacteria, mould and yeast are used as raw materials to be mixed so as to prepare the antibacterial agent. Thus, antimicrobial spectrum of the antibacterial agent is broadened effectively, and the defect that current plant antibacterial agents are prepared by using a single plant as a raw material and have poor broad-spectrum antibacterial effect is overcome. The antibacterial agent can inhibit a wide range of bacteria and has better effects. The invention also discloses a preparation method of the water-soluble compound antibacterial agent.

The invention relates to a method for preparing low-salt leisure marinated fish from salted fish, mainly relates to an aquatic product processing technique and an aquatic product sterilization process, and belongs to the technical fields of aquatic product processing. The method mainly comprises the following steps of: cutting market dried fish or rinsed fish; performing composite desalination (ultrasonic wave and vacuum permeation) on the cut market dried fish or rinsed fish; and preliminarily drying, marinating, drying, saucing, packaging and sterilizing the fish to prepare the low-salt leisure marinated fish, wherein the step of saucing the fish is to add chitosan, red bayberry polyphenol and sodium lactate composite preservative liquid into the fish. The method for preparing the low-salt leisure marinated fish from the salted fish has the advantages that: (1) the traditional food processed by the salted fish is high in salt content and is bad for health; and due to the adoption of the composite desalination technique, the desalination degree can be increased, salt can be removed more effectively, nutritional ingredients are controlled not to be separated out to the maximum extent, and the texture of the fish is maintained better; and (2) due to the combination of natural preservatives, namely the chitosan, the red bayberry polyphenol and the sodium lactate, an antibacterial spectrum is expanded, the time of thermal sterilization is shortened, the texture of the fish is improved and the using amount of salt is reduced.

The invention discloses a controlled-release antibacterial edible composite film and a preparation method thereof. Soy isolate protein serves as a main substrate, glycerin, pectin, nisin, sodium lactate and the like are added according to a specific proportion, so that antibacterial activity and the mechanical performance of the film are improved, and coating is performed for three times by the aid of ultrasound-assisted technology to prepare a controlled-release edible antibacterial protein composite film. The antibacterial activity of the composite film can be effectively improved by nisin-sodium lactate bacteriostatic agents, and microbe development is prevented. Release of the bacteriostatic agents can be effectively controlled by a multilayer film structure prepared by controlled-release technology, and the antibacterial activity of the film is greatly enhanced. The antibacterial activity of the antibacterial composite film slightly changes within two months during storage period, the mechanical performance also slightly changes, the diameter of an antibacterial ring is decreased by 10-15%, tensile strength is reduced by 3-9%, water permeability is enhanced by 2-7%, oxygen permeability is enhanced by 4-5.5%, the color of the film is transparent and does not remarkably change, and the effective period of food quality is prolonged. The composite film is simple to operate, stable and reliable in product quality and suitable for industrial production.

The invention belongs to the technical field of biopesticide, and in particular relates to pseudomonas aeruginosa SU8. The pseudomonas aeruginosa SU8 is preserved in China Center For Type Culture Collection on may 7, 2013 with the preservation number of CCTCC NO:M2013178. The ethyl acetate extract of the SU8 fermentation liquor can be compounded with validamycin to have synergistic effect on the prevention and treatment of rhizoctonia solani, and the extract also has inhibition effects on xanthomonas oryzae pv. oryzicola and xanthomonas axonopodis pv. citri.

The invention relates to a freshwater fish compound preservative and a freshness retaining method. The compound preservative is prepared from bacteriocin crude extract, an antimicrobial lipopeptide crude extract, thyme camphor and water. The freshwater fish compound preservative is an environment-friendly compound preservative prepared for main putrefying flora in freshwater fish, has the characteristics of nontoxicity, a wide antimicrobial spectrum, high antibacterial property and is applicable to preservation and antisepsis of the freshwater fish; the use method is simple, and the productioncost is low; the shelf life of the freshwater fish can be effectively prolonged to 9 d, so that the quality and the storage stability of refrigerated fish are improved, and the freshwater fish compound preservative has a wide application prospect.

The invention discloses a composite anti-biological inoculant prepared by compounding fermentation liquor of bacillus pumilus NF2 and fermentation liquor of paenibacillus polymyxa DL1, as well as a preparation method of the composite anti-biological inoculant and application of the inoculant in aspects of controlling pepper phytophthora blight, improving disease resistance of pepper and increasingpepper yield. The composite anti-biological inoculant combines the anti-biological characteristics of the bacillus pumilus NF2 and paenibacillus polymyxa DL1, the antibacterial spectrum is widened, multiple antibacterial mechanisms are combined, the micro-ecological balance of soil is fully coordinated, the adaptability of the strain to the environment is enhanced, the synergistic disease resistance advantages among the strains are achieved for a long time, and the composite anti-biological inoculant has an excellent anti-biological effect compared with a single strain of paenibacillus polymyxa DL1. In addition, the composite anti-biological inoculant is capable of regulating the micro-ecological environment of plant rhizosphere soil, and producing system disease resistance by plant induction, so that the plant disease resistance can be improved, the comprehensive control effects of promoting growth and resisting diseases are finally achieved, and the aims of improving the quality, increasing yield and increasing income of the pepper can be achieved.

The invention discloses a composite biological preservative fresh keeping agent based on epsilon-polylysine-containing fermentation liquid. Each 100ml of the composite biological preservative fresh keeping agent comprises an epsilon-polylysine-containing microbial fermentation supernatant with the addition quantity meeting the following requirements that the content of epsilon-polylysine is 0.05-0.3g, the content of L-malic acid is 0.5-2g, the cotnent of L-lactamic acid is 0.05-0.5g, the content of natamycin is 0.05-0.3g and the balance of water. According to the composite biological preservative fresh keeping agent based on epsilon-polylysine-containing fermentation liquid, the epsilon-polylysine-containing microbial fermentation supernatant is directly used for preparation, and a complextechnology for separation and extraction of a biological preservative namely epsilon-polylysine is omitted, so that the cost of the biological preservative is greatly reduced. The method is simple and easy to operate. Experiment proves that the made composite biological fresh keeping agent is better in bacterial effect than a contrast group of directly adding pure epsilon-polylysine.

The invention provides an acquisition method of biocontrol bacteria for preventing and treating root diseases of continuous cropping plants, and belongs to the technical field of soil-borne disease prevention and treatment. The acquisition method comprises the following steps: acquiring rhizosphere soil of a continuous cropping plot and rhizosphere soil of a non-continuous cropping plot; separating and identifying flora types of continuous cropping soil and non-continuous cropping soil; comparing continuous cropping flora with non-continuous cropping flora, and screening out lost flora in thecontinuous cropping flora, namely biocontrol bacteria for preventing and treating the root diseases of the continuous cropping plants; and verifying the antibacterial activity of the biocontrol bacteria. The method provided by the invention can effectively obtain the biocontrol bacteria for preventing and treating the root diseases of the continuous cropping plants. The biocontrol bacteria obtained through the method can improve the rhizosphere colonization capacity of microorganisms and enhance the bacteriostasis spectrum, has a good disease prevention and treatment effect and provides support for effective research and development of effective antibacterial agents, and therefore the bottleneck that the biocontrol bacterium is difficult to commercially popularize is fundamentally broken through.

The invention belongs to the technical field of biopesticides and in particular relates to antagonistic bacteria SU8 (Pseudomonas aeruginosa). The Pseudomonas aeruginosa has been preserved at China center for type culture collection in May 7th, 2013, and the preservation number is CCTCC NO: M2013178. An ethyl acetate extract in the SU8 fermentation broth is compounded with validamycin to achieve the synergetic effect on preventing rice sheath blight disease; the ethyl acetate extract has an inhibiting effect on Xanthomonas oryzae pv. oryzicola and X. axonopodis pv. Citri.

The invention discloses a leather fungicide and a preparation method thereof. The leather fungicide is prepared from raw materials in percentage by mass as follows: 1%-20% of propiconazole, 1%-25% ofsodium pyrithione, 1%-15% of iodopropynyl butylcarbamate, 1%-10% of an emulsifier and the balance of a solvent. The preparation method of the leather fungicide is quite simple, and all that is required is to mix the materials sufficiently and uniformly. The leather fungicide contains three active components including propiconazole, sodium pyrithione and iodopropynyl butylcarbamate, and the three active components have different antimicrobial active groups, so that the antimicrobial spectrum of the leather fungicide is greatly expanded; besides, the three active components have obvious synergistic interaction effect, therefore, growth of diversified mould groups on wet blue leather is inhibited, and the common problem of drug resistance of the existing leather fungicide is solved.

The invention discloses a tea polyphenol-lysozyme composite preservative for seafood products. The composite preservative comprises the following components in parts by mass: 10% of tea polyphenol, 30% of lysozyme, 10% of nisin, 5% of phytic acid, 5% of potassium sorbate and 40% of distilled water. The invention takes the tea polyphenol and the lysozyme as the main components for the preparation of the composite preservative for the seafood products, and the composite preservative can effectively inhibit the growth of microorganisms and the oxidative degradation of proteins in a storage process of the seafood products.

The invention relates to the technical field of traditional Chinese medicine, and particularly discloses a traditional Chinese medicine composition for preventing piglet diarrhea and a preparation method and application thereof. The traditional Chinese medicine composition is prepared from the following medicinal compositions in percentage by weight: 20 to 24 parts of radix geutianae, 15 to 25 parts of cortex phellodendri, 10 to 16 parts of fructus forsythiae, 12 to 14 parts of semen coicis, 7 to 9 parts of radices saussureae, 12 to 16 parts of radices puerarire, 8 to 12 parts of rhizoma dioscoreae and 16 to 18 parts of cortex fraxini. According to the traditional Chinese medicine composition for preventing piglet diarrhea as well as the preparation method and application thereof, the obtained traditional Chinese medicine composition can effectively prevent and treat piglet diarrhea and is good in curative effect, all the medicine components supplement one another and cooperate with one another, and finally piglet diarrhea is prevented and relieved.

The invention discloses acid powder, a preparation method and application thereof. According to the invention, through two fermentations, namely aerobic fermentation and anaerobic fermentation, antibacterial substances generated after fermentation of bacillus aceticus and lactic acid bacteria are respectively utilized to jointly achieve a broad-spectrum antibacterial effect while food raw materials are fermented to obtain richer mouth feel, and by mixing the fermentation broths, powder is prepared by a low-temperature freeze-drying method, so that the nutritional value and flavor of the fermentation broths are retained, and the product is convenient to transport and use; as a food ingredient, the product is applied and added to food industrial production, and the shelf life of food is prolonged; and the acid powder has important significance and wide application prospect under the market trend of paying attention to food safety, and can well solve the problems of food preservation and fresh keeping in the prior art.