US 12,740,564 B2 · Method and procedure for obtaining natural pyrethrin microbiocapsules with high stability

Abstract

The present invention describes a procedure for obtaining microbiocapsules of one or more pyrethrins as active substance, and is framed in the field of biopesticide production technique. Natural pyrethrin is a broad spectrum insecticide extracted from the flowers of the plant of the genus Chrysanthemum and is easily decomposed by air and light. The present invention increases the stability of pyrethrins, being effective for a longer time than other solutions of the state of the art. The method and procedure comprises the following steps; a first oil phase, a second phase of mixture emulsion and a third encapsulation phase. The result is the obtaining of pyrethrin microbiocapsules with a size between 0.5 to 5 microns, with greater stability. The process does not reduce the insecticidal capacity of pyrethrins.

Claims15

Dependent claims

A procedure for obtaining pyrethrin microbiocapsules comprising:

(1) preparing an oily phase by adding a solution of one or more pyrethrins as an active substance with a concentration about 48% to about 80% w/w to one or more vegetable oils in a ratio of 1:20 of the one or more pyrethrins to the vegetables oils;
(2) preparing an emulsified phase by adding an emulsifying agent to the oily phase of (1), wherein the emulsifying agent is present in a proportion of 10% to 50% by weight;
and
(3) subjecting the preparation of (2) to a controlled mixing process comprising stirring at about 60 to about 300 RPM for about 1 hour to about 36 hours at a pH of about 5 to about 10 to obtain a preparation of pyrethrin microbiocapsules having a size of about 0.5 μm to about 5 μm.

1 more element

Dependencies are inferred from the claim text.

Method and procedure for obtaining natural pyrethrin microbiocapsules with high stability

Life of this patent

Method and procedure for obtaining natural pyrethrin microbiocapsules with high stability

Life of this patent

Abstract

Claims15