50 results about "Pyrethrum extract" patented technology

The invention provides a process for producing pyrethrum through subcritical continuous extraction, which belongs to the technical field of plant active ingredient extraction and solves the problems of excessive solvent extraction times in a pyrethrum extracting process and the like. An extraction device comprises four extraction pots, wherein a liquid inlet pipe and a liquid outlet pipe are arranged on each extraction pot; and a solvent circulating pipe is arranged between a solvent inlet pipe and a solvent outlet pipe. The continuous extraction process comprises a primary material extraction stage, a secondary material extraction and four stages, namely circulation stage I, circulation stage II, circulation stage III and circulation stage IV; an adopted solvent is in a subcritical state; dried flower raw materials of the pyrethrum are placed in the extraction pots; a new solvent is added from the solvent inlet pipe and is transferred to a concentration stage through the solvent outlet pipe after extraction; and the pasty extract in a concentration pot is the finished product. In the process of the invention, the solvent concentration and recirculation times are few; the production period is short; and the production cost is reduced.

The invention discloses a fruit tree diseases-prevention bud-development seedling-protection promoter. The active components comprise the following ingredients in parts by weight: 5.0-30.0 parts of a plant source bactericide, 1.0-5.0 parts of carbendazim, 10.0-35.0 parts of sophora alopecuroides, 0.01-1.0 parts of indolebutyric acid, 0.01-1.0 parts of a brassinolide agent with concentration of 0.0075%, 0.05-5.0 parts of potassium dihydrogen phosphate, 0.05-5.0 parts of ferrous sulphate, 0.05-5.0 parts of zinc sulfate, 0.05-5.0 parts of manganese sulfate, and 10.0-20.0 parts of potassium humate. The plant source bactericide is one or a composition from a neem extract product, an argy wormwood extract product, a sophora flavescens extract product, a pyrethrum extract product, and a red-knees herb extract product. The application method is characterized in that in 1-30 days after the fruit trees are trimmed, the cut edge on the section surface of the branches of a fruit tree is sprayed with the fruit tree diseases-prevention bud-development seedling-protection promoter, rooting growth can be promoted for the fruit trees, germination and leaves growing are rapidly promoted, insect disease generation is inhibited, output is increased, the application of the promoter is wide, the promoter can be used on fruit trees such as peach, grape, apricot, pear, mango, lichee and longan trees, and the market application prospect is large.