Method for directly processing pesticide using Camptotheca acuminata

Abstract

The invention discloses a method for preparing pesticide by using dendrophilous and relates to field of preparing pesticide by using plant source. The method comprises following steps: (1) disintegrating the fresh or dried leaves, fruits, root, bark and branch of dendrophilous into 100-300 orders with disintegrator; adding base or basic salt after stirring it evenly; disintegrating cell with supersonic wave and getting slurry or separating slurry from solid, collecting liquid for future use; (2) adding inorganic acid or organic acid into got slurry or collected liquid for reaction, regulating pH to be lower than 7, adding pesticide agent after reaction; (3) preparing liquid agent or solid agent through normal preparing process. The invention is characterized by simple process, reduced production cost, about less than five thousand yuan per ton, good effect of pesticide and safe usage.

Description

Technical field [0001] The invention relates to the technical field of methods for preparing pesticides from plant sources, in particular to a method for directly processing a camptotheca into pesticides. Background technique [0002] Camptothca acuminate Decne, Nyssaceae, is a perennial subtropical deciduous broad-leaved tree. This genus is only one species of Camptotheca acuminate. It is a species endemic to my country, mainly distributed in Jiangxi, Zhejiang, Hunan, Hubei, Sichuan Yunnan, Guizhou, Guangxi, Guangdong and other places contain alkaloids in wood, root bark, seeds and leaves. The content in roots is about 0.05%, the content in seeds is about 0.07%, and the content in leaves is about 0.10%. Among them, camptothecin and hydroxycamptothecin are the main components, which have anti-cancer activity and have certain curative effects on liver cancer, gastric cancer, leukemia, bladder cancer, etc. Camptothecin (CPT) is a pyrroloquinoline alkaloid. The chemical structures o...

AI Technical Summary

Problems solved by technology

This patent directly uses a certain purity of camptothecin and its derivatives as the original drug, and manufactures pesticides through formulation processing, which solves the problem of the structure and content of the main chemical components. However, camptothecin and its derivatives have always been used as medicines, and their prices Relatively expensive, the current price of camptothecin with content ≥95% is 35,000 yuan / kg, the price of hydroxycamptothecin with content ≥99% is 380,000 yuan / kg, and the price of other camptothecin derivatives is even higher

Taking camptothecin with a content ≥ 95% as an example, to manufacture a pesticide with 0.2% camptothecin, the raw material cost of camptothecin alone needs more than 70,000 yuan / ton, plus other production costs, it is close to 100,000 yuan / ton tons, its expensive price is difficult to be accepted by the market

Images