Microencapsulation of Xenorhabdus nematophilus and its preparation and composition

PURPOSE: A method for microencapsulating Xenorhabdus nematophilus(Xn) by microencapsulating it with various polymers under specific conditions is provided, which improves storage stability of biotic pesticide. A mixture composition with Bacillus thuringinesis preparations exhibits synergestic insect...

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Hauptverfasser:	HWANG, CHANG IL, KIM, YONG GYUN, MUN, SEON JU, JANG, HUI SU, LEE, JEONG SUK, LEE, SU HUI, JUNG, JONG SANG, KIM, PAN GYEONG, KIM, YONG UK
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES FISHING FORESTRY HUMAN NECESSITIES HUNTING PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF TRAPPING
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Beschreibung
Zusammenfassung:	PURPOSE: A method for microencapsulating Xenorhabdus nematophilus(Xn) by microencapsulating it with various polymers under specific conditions is provided, which improves storage stability of biotic pesticide. A mixture composition with Bacillus thuringinesis preparations exhibits synergestic insecticidal effect against insects having low sensitivity to conventional biotic pesticides. CONSTITUTION: This process comprises the steps of: mixing 100 parts by weight of 10 to 50% polymeric aqueous solution with 1 to 30 parts by weight of Xenorhabdus nematophilus(Xn), emulsifying and dispersing; preparing microcapsule slurry by surface reaction or in situ polymerization of the mixture solution; powderizing the slurry by spraying under the condition of a nozzle temperature of 50 to 100deg.C and a spray speed of a nozzle of 1 to 30ml/min. 본 발명은 제노랍두스 네마토필러스(Xenorhabdus nematophilus : Xn) 미생물제제의 마이크로캡슐화(microencapsulation) 방법 및 그 제제와 이를 이용한 생물농약 조성물에 관한 것이다. 본 발명에서는 Xn을 각종 폴리머로 마이크로캡슐화 (microencapsulation)하여 균주의 생존을 유지시키면서도 외부환경에 대해 저장안정성을 향상시키는 마이크로캡슐화 방법과 그 제제가 제공된다. 또한 본 발명에서는 마이크로캡슐화된 분말 Xn제의 살충효과를 상승시키고 지속화시키기 위하여 비티(Bacillus thuringinesis : Bt)제와 혼합한 살충제 조성물이 제공된다. 본 발명에 따른 마이크로캡슐화는 Xn의 저장안정성을 향상시키고, 비티와의 혼합 조성물은 기존의 생물농약에 대해 감수성이 낮았던 곤충에 대해서도 상승된 살충효과 및 보다 지속적인 약효를 나타낸다.