68 results about "Viricidal activity" patented technology

The invention relates to a fatty acid composition, which is diluted at normal temperature and in cold water to form solution used for cleaning of sterilization, fungicide and antivirus. The fatty acid composition comprises at least the following components: component A: food fatty acid comprising at least octyl decanoic acid and nonanoic acid; component B: surfactant comprising alkane sulfonate; component C: acid. The fatty acid composition has the advantages that the fatty acid composition or the diluted solution thereof has good stability, bactericidal and antiviral activity under the water temperature of 4-20 DEG C, no phase separation or crystallization, thus having safer use performance, and active components are low in cost, having more broad-spectrum bactericidal activity which can kill various bacteria, epiphytes and viruses. The fatty acid composition or the diluted solution thereof can be used for sterilization, fungicide and antivirus, which has high-efficient and quick killing effect; the sterilizing rate can reach more than 99.999 percent with contact time less than 1 minute; The fatty acid composition or the diluted solution thereof also has strong cleaning ability, and can keep effective even in hard water; the killing ratio for poliovirus reaches 99.9999 percent and the poliovirus can be killed immediately.

Disclosed herein are an anti-bacterial, anti-fungal and anti-viral composition with excellent sterilizing power, deodorization and adhesion activity, an application thereof, and a method for preparing the same. The composition with sterilizing activity against bacteria, fungus and virus comprises colloidal silver particles in an amount of from 11 wt % to 15 wt %, titanium dioxide nanoparticles in an amount of from 18 wt % to 25 wt %, a dispersion stabilizer in an amount of from 0.01 wt % to 10 wt %, a binder in an amount of from 0.1 wt % to 4 wt %, and a balance of water in an amount required to form 100 wt %.

The invention belongs to the field of biotechnology, and particularly relates to an endolysin derived from the Vibrio parahaemolyticus phage, and application of the endolysin. The endolysin is derived from the Vibrio parahaemolyticus phage of which the amino acid sequence is all or a part of the shown amino acid sequence SEQ ID No: 1. Sequence analysis shows that the endolysin is a lyase in the phase, and the lyase enables a bacterial cell wall to be cracked; test confirms that protein formed from the amino acid sequence is better in bactericidal activity. The endolysin has an obvious bactericidal effect on in vitro Vibrio parahaemolyticus after being expressed and purified by a suitable expression vector existing in the market, and can be applied to preparation of a Vibrio parahaemolyticus bacteriostat.

The invention relates to a tetrahydroaza [4,5-b] indolylhydrazone derivative as well as a preparation method and application thereof to prevention and control of plant virtuses, sterilization and disinsection, and the meaning of each group in a general formula is shown as a specification. The tetrahydroaza [4,5-b] indolylhydrazone derivative disclosed by the invention has excellent anti-plant-virus activity and further has broad-spectrum bactericidal activity and insecticidal activity.

The invention provides a 3,4(6)-disubstituted-1,3-benzoxazine-2-ketone compound shown in a formula (I). In the formula (I), when a substituent group R1 is -CH3 and a substituent group R2 is H, R3 is H, or 3-CH3, or 4-CH3, or 2-OCH3, or 4-Cl; when the substituent group R1 is H and the substituent group R2 is -CH3, R3 is 3-CH3, or 4-CH3, 2-OCH3, or 3-OCH3, or 4-Cl. The 3,4(6)-disubstituted-1,3-benzoxazine-2-ketone compound has good bactericidal activity on pathogenic bacteria of crops. The formula (I) is described in the specification.

The invention relates to a glycosyl substituted genipin derivative (I) as well as a preparation method and an application as pesticides. The inhibition rate of a part of compounds in formulae (Ia andIb) to tobacco mosaic viruses exceeds that of commercial variety virazole, and is approximate to that of ningnanmycin. In addition, a part of the compounds in the formulae (Ia and Ib) have excellent sterilization activity on 14 plant pathogens, and fungus bacteriosis of multiple crops can be effectively prevented and treated. A part of the compounds in the formulae (Ia and Ib) have excellent insecticide activity on 4 common lepidoptera pests (plutella xylostella, oriental armyworm, ostrinia nubilalis and cotton bollworm), and lepidoptera pests of multiple crops can be effectively prevented andtreated. Specific synthesis steps and bioactivity are shown in the specification.

Antibacterial compositions effective against both gram positive and gram negative vegetative bacteria plus harmful gram positive sporeforming bacteria include propionibacterial metabolites in combination with two or more of the following: a lantibiotic; a lytic enzyme; and an organic acid or its salt. Methods of use are provided, as well as food products treated with these antibacterial compositions.

The invention relates to a composition for killing harmful fungus, such as sigatoka disease and the like. The composition is characterized in that the composition contains two types of active components: epoxiconazole (chemical name: (2RS,3RS)-1-(3-(2-chlorphenyl)-2, 3-epoxy-2(4-fluorophenyl)propyl)-1-H-1, 2, 4-triazole) and carbendazim (chemical name: benzimidazole-2-benzimidazole methyl carbamate), and the weight ratio between the epoxiconazole and the carbendazim is between 1:0.01 to 1:95. The composition overcomes the defects existing in the prior art, has the extremely remarkable synergistic action, can control the sigatoka disease and other harmful fungi by applying smaller dosage and can display extremely strong bacteria resistance and bactericidal activity.

The present invention provides a group of new antibacterial peptides which has stronger bactericidal activity than that of natural antibacterial peptides and has good killing effect on various pathogenic bacteria. The present invention also discloses a method for preparing the antibacterial polypeptides which can be synthesized by a solid phase chemical method or obtained through expression by a genetic engineering method. The synthesized antibacterial peptides of the present invention can be used for preparing medicines for treating diseases caused by the infection of gram-positive bacteria,gram-negative bacteria or fungi.

Non-flammable, VOC-free organosilane quaternary ammonium compositions are provided in the form of pure or substantially pure water-soluble products that have bactericidal, fungicidal and viricidal activity and which are capable of bonding to various surfaces to form durable hydrophobic coatings. The resulting compositions are free of unreacted chloropropyltrialkoxysilanes, alkylamines and organic solvents that would otherwise provide flammable, corrosive, and / or toxic properties thereby inhibiting their safe and effective use in surface care, personal care and coating products.

A substituent thieno [3', 2':5,6] pyrido [4,3-d] pyrimidine-4(3H)-one with bactericiding activity and its preparing process is also disclosed. It can be used as the bactericide with high suppression activity to cotton wilt fungus, the sheath and culm blight bacteria of rice, gray mold of cucumber, etc.

The invention relates to a spirooxoindole (thio)hydantoin derivative as well as a preparation method and application thereof to aspects of plant virus prevention and control, sterilization and insect killing. A structural formula of the derivative is a structure shown as a general formula I. The spirooxoindole (thio)hydantoin derivative provided by the invention has excellent plant virus resisting activity and also has broad-spectrum sterilization activity and insect killing activity. (The formula I is shown in the description.).