A synergistic ant powder of Chinese herbal medicine extract

By loading triptolide and rotenone onto an aminated modified biochar carrier, a synergistic mechanism of electrostatic adsorption and sustained release was constructed, solving the stability and targeting issues of ant-killing powder made from traditional Chinese medicine extracts, and achieving long-lasting ant-killing effect and low-cost production.

CN122350108APending Publication Date: 2026-07-10KAIPING DAHAO DAILY CHEM TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
KAIPING DAHAO DAILY CHEM TECH CO LTD
Filing Date
2026-04-07
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

Existing herbal extract ant-killing powders suffer from short duration of action, poor targeting, and low environmental utilization due to the volatility, photodegradation, or thermal degradation of active ingredients. Traditional carriers cannot form effective intermolecular interactions with active ingredients, and existing improvement methods are either costly or environmentally unfriendly.

Method used

Aminated biochar was used as a carrier to load triptolide and rotenone through electrostatic adsorption and sustained release synergistic mechanism. The active ingredients were stably anchored in a neutral environment by the multiple hydrogen bond network and electrostatic attraction between the aminated biochar and the active ingredients. The alkaline environment on the ant's body surface triggered the release of the drug, achieving environmentally responsive release.

Benefits of technology

It extends the effective period of active ingredients in traditional Chinese medicine to 15-20 days, increases the utilization rate of the medicine by more than 3 times, and reduces production costs by more than 60%. It is suitable for the control of termites and house ants in homes, gardens and farmlands, and has high safety.

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Abstract

This invention belongs to the field of pesticide technology and discloses a synergistic ant-killing powder based on traditional Chinese medicine extracts. This powder uses aminated modified biochar as a bifunctional carrier, loading a complex of active ingredients including triptolide and rotenone. It addresses the problems of short duration of action and poor targeting of existing plant-derived ant killers through an electrostatic adsorption-slow-release synergistic mechanism. Its components include 65%–85% aminated modified biochar, 3%–8% triptolide, 2%–6% rotenone, 5%–15% flow aid, and 1%–3% anti-caking agent. The carrier is prepared from agricultural waste through oxygen-limited pyrolysis and silane grafting, possessing a high specific surface area and controllable pore size, which can stably anchor the active ingredients and trigger release in the alkaline microenvironment of ants. This ant-killing powder extends the duration of action, improves efficacy utilization, and has low toxicity to non-target organisms, making it suitable for green pest control in various scenarios.
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