BACILLUS THURINGIENSIS ISRAELENSIS CRYSTAL EXPERT MICROENCAPSULATION PROCESS

The present invention provides a microencapsulation process of crystal spore extract by Bacillus Thuringiensis Israelensis (Bt001). This process permits a micro-particulate system to be obtained based on polyacrylate polymers. The aforementioned process is based on a multiple emulsion modified by (S...

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Bibliographische Detailangaben
Hauptverfasser:	LUIS JESUS GALAN WONG, ABELARDO CHAVEZ MONTES, ROCIO CASTRO RIOS, HUGO ALBERTO LUNA OLVERA, ERIKA GONZALEZ ALVAREZ
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY FISHING FORESTRY HUMAN NECESSITIES HUNTING PERFORMING OPERATIONS PEST REPELLANTS OR ATTRACTANTS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PLANT GROWTH REGULATORS PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF THEIR RELEVANT APPARATUS TRANSPORTING TRAPPING
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Beschreibung
Zusammenfassung:	The present invention provides a microencapsulation process of crystal spore extract by Bacillus Thuringiensis Israelensis (Bt001). This process permits a micro-particulate system to be obtained based on polyacrylate polymers. The aforementioned process is based on a multiple emulsion modified by (S / ow) salting out technique which is implanted to produce microcapsules with sizes of about 30 ?m and with the capacity to protect the crystal spore extract from environmental factors, such as ultraviolet radiation. The present invention provides microcapsules allowing the release of Bt micro-particles extract from an alkaline environment similar to that of the intestine of certain insect pests, whereby their toxic activity is directed only to target insects based on the pH of their midgut. Also, the microcapsules include the ability to float in water and allow the activity of the biological agent to be maintained due to its protective capacity against REM-UV which improves its residual a ctivity. La presente invención provee un proceso de microencapsulación del extracto espora cristal producido por Bacillus thuringiensis israelensis (Bt001). Dicho proceso permite obtener un sistema microparticulado a base de polímeros de poliacrilatos y se basa en la técnica modificada emulsión multiple (S/ow) salting out, la cual es implementada para producir microcápsulas con tamaños alrededor de 30 µm y con la capacidad de proteger al extracto espora cirstal de factores ambientales, como la radiación ultravioleta. La presente invención provee microencapsulados que permiten la liberación del extracto Bt de las micropartículas en un medio alcalino semejante al del intestino de ciertos insectos plaga, por lo que su actividad tóxica es dirigida sólo a insectos diana en base al pH de su intestino medio. Asimismo, los microencapsulados tienen la capacidad de flotación en agua y permiten mantener la actividad del agente biológico debido a su capacidad protectora ante REM-UV, lo que mejora su actividad residual.