The invention discloses an exopolysaccharide from Rhodopseudomonas palustris and a method for preparing and use thereof, and the method for preparing comprises the steps of: 1) keeping a seed solution from Rhodopseudomonas palustris GJ-22 in a fermentation medium for fermentation culture to obtain a fermentation broth; 2) centrifuging the fermentation broth to take the supernatant, which is treated by alcohol precipitation after filtration, and then collecting the pellet from alcohol precipitation by centrifugation to obtain crude polysaccharide; 3) removing proteins from the rude polysaccharide using protease enzymolysis method and Sevag method, followed by dialysis treatment with distilled water to remove small molecules and organic solvent to obtain a polysaccharide sample; 4) purifying the polysaccharide sample through an anion exchange column and a molecular exclusion chromatography column obtain the exopolysaccharide from Rhodopseudomonas palustris.

The invention discloses an exopolysaccharide from Rhodopseudomonas palustris and a method for preparing and use thereof, and the method for preparing comprises the steps of: 1) keeping a seed solution from Rhodopseudomonas palustris GJ-22 in a fermentation medium for fermentation culture to obtain a fermentation broth; 2) centrifuging the fermentation broth to take the supernatant, which is treated by alcohol precipitation after filtration, and then collecting the pellet from alcohol precipitation by centrifugation to obtain crude polysaccharide; 3) removing proteins from the rude polysaccharide using protease enzymolysis method and Sevag method, followed by dialysis treatment with distilled water to remove small molecules and organic solvent to obtain a polysaccharide sample; 4) purifying the polysaccharide sample through an anion exchange column and a molecular exclusion chromatography column obtain the exopolysaccharide from Rhodopseudomonas palustris.

The invention relates to a composition, preferably a pest repellent composition, comprising thymol and/or cembratriene-ol (CBT-ol), a stabilizer and a solvent.

The invention relates to a composition, preferably a pest repellent composition, comprising thymol and/or cembratriene-ol (CBT-ol), a stabilizer and a solvent.

The invention relates to a composition, preferably a pest repellent composition, comprising thymol and/or cembratriene-ol (CBT-ol), a stabilizer and a solvent.

A multipurpose mosquito repellent composition obtained by a process of forming a foundation mixture by mixing an anti-insect extract/essential oil with at least two odorless and anti-insect effect prolonging extract/essential oils; and mixing the foundation mixture with a plurality of aromatic and medicinal oils in a specific order with each of the plurality of aromatic and medicinal oils having a specific predetermined percentage (%) by weight relative to the total weight of the multipurpose mosquito repellent composition.

A multipurpose mosquito repellent composition obtained by a process of forming a foundation mixture by mixing an anti-insect extract/essential oil with at least two odorless and anti-insect effect prolonging extract/essential oils; and mixing the foundation mixture with a plurality of aromatic and medicinal oils in a specific order with each of the plurality of aromatic and medicinal oils having a specific predetermined percentage (%) by weight relative to the total weight of the multipurpose mosquito repellent composition.

A multipurpose mosquito repellent composition obtained by a process of forming a foundation mixture by mixing an anti-insect extract/essential oil with at least two odorless and anti-insect effect prolonging extract/essential oils; and mixing the foundation mixture with a plurality of aromatic and medicinal oils in a specific order with each of the plurality of aromatic and medicinal oils having a specific predetermined percentage (%) by weight relative to the total weight of the multipurpose mosquito repellent composition.

The invention provides a filter fabric for providing anti pathogenic properties which has been coated with a composition comprising (a) 0.0001-99.9999% by weight of a compound of such as zinc pyrithione and (b) 0.0001-99.9999% by weight of an additional zinc salt selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc polyacrylate and zinc polymaleate. The invention also provides a composition for imparting anti-viral properties to a breathable substrate material comprising two or more zinc salts selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc EDTA, zinc glycinate, zinc polyacrylate, zinc polylactate, zinc polyglycolate and zinc polymaleate said zinc salts being present in effective amounts to impart anti-pathogenic properties.

The invention provides a filter fabric for providing anti pathogenic properties which has been coated with a composition comprising (a) 0.0001-99.9999% by weight of a compound of such as zinc pyrithione and (b) 0.0001-99.9999% by weight of an additional zinc salt selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc polyacrylate and zinc polymaleate. The invention also provides a composition for imparting anti-viral properties to a breathable substrate material comprising two or more zinc salts selected from the group consisting of zinc acetate, zinc propionate, zinc oxalate, zinc benzoate, zinc gluconate, zinc ascorbate, zinc citrate, zinc lactate, zinc glycolate, zinc maleate, zinc fumarate, zinc EDTA, zinc glycinate, zinc polyacrylate, zinc polylactate, zinc polyglycolate and zinc polymaleate said zinc salts being present in effective amounts to impart anti-pathogenic properties.