The invention relates to the use of an organometallic coordination complex or its phytopharmaceutically acceptable salt of a M.sup.m+ metal and of at least one L ligand, where M.sup.m+ is a transition metal having an oxidation number m, L is a ligand of general formula (VII) or its anion, wherein R.sup.1 is selected from the group consisting of oxygen, mono or polycyclic alkyl, naphthalene residue, anthracene residue and their hydroxylated or ketone derivatives; R.sup.2 and R.sup.3 are identical or different and are selected independently of each other from hydrogen, halogen, a hydroxyl group, an alkoxy group, a linear or branched alkyl group, a cycloalkyl group or R.sup.2 and R.sup.3 together forming a benzene derivative; R.sup.6, R.sup.7 and R.sup.8 are identical or different and independently of each other are selected from hydrogen, a hydroxyl group, an alkoxy group, a linear or branched alkyl group, a cycloalkyl group, a phenyl group, an aryl group in the treatment of Xylella fastidiosa in a plant. The invention also concerns the use of the compound of formula (VII) in the treatment of Xylella fastidiosa in a plant, also in combination with the organometallic coordination complex. Advantageously, the invention concerns the treatment of olive trees.

Disclosed is a method for preparing an attapulgite-based pH-responsive antibacterial material, including: directly spraying a natural aldehyde-based antibacterial agent onto an attapulgite powder under stirring, and constantly stirring the attapulgite powder for 20-30 min; grinding the attapulgite powder in a ball mill for 30-60 min to obtain a ground attapulgite powder; placing the ground attapulgite powder in a stirred tank, and spraying a chitosan-citric acid aqueous solution onto the ground attapulgite powder; after spraying, constantly stirring the ground attapulgite powder for 30-120 min; and finally drying the ground attapulgite powder to obtain a dried attapulgite powder, sieving the dried attapulgite powder to obtain a sieved attapulgite powder, and packaging the sieved attapulgite powder to obtain the antibacterial material.

Disclosed is a method for preparing an attapulgite-based pH-responsive antibacterial material, including: directly spraying a natural aldehyde-based antibacterial agent onto an attapulgite powder under stirring, and constantly stirring the attapulgite powder for 20-30 min; grinding the attapulgite powder in a ball mill for 30-60 min to obtain a ground attapulgite powder; placing the ground attapulgite powder in a stirred tank, and spraying a chitosan-citric acid aqueous solution onto the ground attapulgite powder; after spraying, constantly stirring the ground attapulgite powder for 30-120 min; and finally drying the ground attapulgite powder to obtain a dried attapulgite powder, sieving the dried attapulgite powder to obtain a sieved attapulgite powder, and packaging the sieved attapulgite powder to obtain the antibacterial material.

Disclosed is a method for preparing an attapulgite-based pH-responsive antibacterial material, including: directly spraying a natural aldehyde-based antibacterial agent onto an attapulgite powder under stirring, and constantly stirring the attapulgite powder for 20-30 min; grinding the attapulgite powder in a ball mill for 30-60 min to obtain a ground attapulgite powder; placing the ground attapulgite powder in a stirred tank, and spraying a chitosan-citric acid aqueous solution onto the ground attapulgite powder; after spraying, constantly stirring the ground attapulgite powder for 30-120 min; and finally drying the ground attapulgite powder to obtain a dried attapulgite powder, sieving the dried attapulgite powder to obtain a sieved attapulgite powder, and packaging the sieved attapulgite powder to obtain the antibacterial material.

A mixture M of natural origin comprising an usnic acid and/or a salt thereof, preferably an usnic acid sodium salt, in the racemic or dextrorotatory D(+) form and an inclusion compound including (i) a D-usnic acid as an enantiomer, or a salt thereof, or mixtures thereof, of natural origin, and (ii) beta-cyclodextrins and related methods of their use as antibacterial, antibacterial proliferative, bacteriostatic, microbicidal, anti-mould, anti-yeast, antifungal or antimycotic agent, are described.

A mixture M of natural origin comprising an usnic acid and/or a salt thereof, preferably an usnic acid sodium salt, in the racemic or dextrorotatory D(+) form and an inclusion compound including (i) a D-usnic acid as an enantiomer, or a salt thereof, or mixtures thereof, of natural origin, and (ii) beta-cyclodextrins and related methods of their use as antibacterial, antibacterial proliferative, bacteriostatic, microbicidal, anti-mould, anti-yeast, antifungal or antimycotic agent, are described.

One compound (100) according to the present invention contains silicon fine particles having a capability of generating hydrogen or aggregates of the silicon fine particles. The compound that contains the silicon fine particles or the aggregates having a capability of generating hydrogen is capable of generating hydrogen in the body of, for example, an animal that has ingested the compound. For a plant, the compound can be disposed or charged into, for example, moisture (water-containing liquid) or fertilizer to be provided to the plant, to supply the plant with hydrogen generated from the compound.

One compound (100) according to the present invention contains silicon fine particles having a capability of generating hydrogen or aggregates of the silicon fine particles. The compound that contains the silicon fine particles or the aggregates having a capability of generating hydrogen is capable of generating hydrogen in the body of, for example, an animal that has ingested the compound. For a plant, the compound can be disposed or charged into, for example, moisture (water-containing liquid) or fertilizer to be provided to the plant, to supply the plant with hydrogen generated from the compound.

One compound (100) according to the present invention contains silicon fine particles having a capability of generating hydrogen or aggregates of the silicon fine particles. The compound that contains the silicon fine particles or the aggregates having a capability of generating hydrogen is capable of generating hydrogen in the body of, for example, an animal that has ingested the compound. For a plant, the compound can be disposed or charged into, for example, moisture (water-containing liquid) or fertilizer to be provided to the plant, to supply the plant with hydrogen generated from the compound.

The present invention discloses a method for preparing L-glufosinate ammonium powder. The method includes the following steps: (1) obtaining a transformation solution for performing biocatalytic transformation to prepare L-glufosinate ammonium, and filtering out bacteria to obtain a filtrate; (2) detecting the amount of ammonium sulfate in the filtrate obtained in step (1), adding calcium hydroxide or calcium oxide to react with the ammonium sulfate to produce calcium sulfate precipitates, and filtering out the calcium sulfate precipitates to obtain a filtrate; (3) detecting the amount of glufosinate ammonium in the filtrate obtained in step (2), adding zinc salt, adjusting pH to 5.5-6.8 to produce glufosinate ammonium zinc salt precipitates, and filtering and collecting the glufosinate ammonium zinc salt precipitates; (4) adding a solvent to dissolve the glufosinate ammonium zinc salt precipitates collected in step (3), and adjusting pH of a solution to 2-2.5 to produce L-glufosinate ammonium precipitates; and (5) recrystallizing the L-glufosinate ammonium precipitates obtained in step (4) to obtain purified L-glufosinate ammonium powder. The method provided by the present invention is simple to operate and low in cost, and has a better industrialization prospect.