| 摘要 |
The insecticide composition consists of 50% pyrethrum concentrate, essential oils from dill seeds, Anethum graveolens, and/or from parsley seeds Petroselinum crispum and/or lovage leaves, Levisticum officinale, non-ionic surfactant agents of vegetal origin, sodium coco sulfate, soy lecithin, coco-glucoside and solvent S. The method for obtaining involves the following stages: preparing the solvent S by the transesterification reaction of vegetable oils from sunflower and/or rapeseed and/or soybean, in an excess of ethylic alcohol and in the presence of potassium hydroxide; extraction of essential oils from the vegetal material by maceration for 14 days at a temperature of 20-25°C in the solvent S; filtering the maceration obtaining the solvent S with content of essential oils, used to obtain insecticide compositions with pyrethrins. |
