Video Experimental Relacionado
Updated: Feb 10, 2026
11:32
Highly Stable, Functional Hairy Nanoparticles and Biopolymers from Wood Fibers: Towards Sustainable Nanotechnology
Published on: July 20, 2016
12.6K
La resistencia fototérmica de las microcápsulas Btk basadas en biopolímeros: implicaciones para el control sostenible
G V Suresha1,2, D Neethu Roy1, P Duraimurugan1
1ICAR-Indian Institute of Oilseeds Research, Rajendranagar, Hyderabad 500030, India.
ACS omega
|February 9, 2026
Resumen
Este estudio desarrolló el Bacillus thuringiensis var. microencapsulado. kurstaki (Btk) utilizando coacervación compleja, mejorando su estabilidad contra la radiación UV y el calor. La nueva formulación ofrece una mayor eficacia en el control de plagas y una mayor longevidad en condiciones de campo.
Área de la Ciencia:
- Biotecnología La biotecnología es la biotecnología.
- Entomología Entomología.
- Ciencia de los materiales Ciencia de los materiales.
Sus antecedentes:
- Bacillus thuringiensis var. también conocido como Bacillus thuringiensis. kurstaki (Btk) es un biopesticida con eficacia de campo limitada debido a la degradación por la radiación UV y el calor.
- La reducida viabilidad de las esporas y la potencia insecticida comprometen la efectividad de Btk en el manejo sostenible de plagas.
Objetivo del estudio:
- Desarrollar y optimizar formulaciones microencapsuladas de Btk utilizando coacervación compleja para mejorar la estabilidad ambiental.
- Evaluar las propiedades fisicoquímicas, la estabilidad y la eficacia insecticida de las nuevas formulaciones Btk contra las principales plagas agrícolas.
Principales métodos:
- Se desarrollaron formulaciones microencapsuladas de Btk (CC-1+Btk (D) y CC-2+Btk (D)) a través de la coacervación del complejo de biopolímeros polielectrolíticos.
- Propiedades fisicoquímicas evaluadas (eficiencia de atrapamiento, retención de proteínas, humedecibilidad) y estabilidad bajo estrés UV y térmico.
- Evaluó la actividad insecticida contra Spodoptera litura y Achaea janata, y realizó estudios de persistencia en el follaje de ricino.
Principales resultados:
- Ambas formulaciones mostraron >98% de eficiencia de atrapamiento y buenas propiedades físico-químicas.
- CC-1+Btk (D) exhibió una estabilidad superior contra los rayos UV-C, UV-B y estrés térmico, manteniendo un mayor número de esporas viables.
- El Btk encapsulado demostró una mayor mortalidad larval y una actividad insecticida persistente hasta 48 horas después del tratamiento en comparación con el Btk sin encapsular.
Conclusiones:
- La coacervación compleja proporciona un sistema de entrega escalable y biodegradable para mejorar la robustez ambiental y la eficacia residual de Btk.
- La microencapsulación mejora significativamente la estabilidad, la vida útil y el rendimiento de campo de Btk para el manejo sostenible de plagas.
- La formulación Btk desarrollada ofrece una solución prometedora para el control de plagas biológicas resistentes y efectivas.
Más Videos Relacionados
12:22Mindfulness in Motion MIM: An Onsite Mindfulness Based Intervention MBI for Chronically High Stress Work Environments to Increase Resiliency and Work Engagement
Published on: July 1, 2015
24.6K
08:58Procedures of Laboratory Fumigation for Pest Control with Nitric Oxide Gas
Published on: November 24, 2017
17.7K
Videos de Conceptos Relacionados
01:43Sustainable Development
15.2K
As the human population continues to grow and use resources, we must be mindful of our planet’s natural limits. Sustainable development provides a pathway to maintain and improve human life now while also ensuring that future generations will have the resources that they need. The long-term success of sustainability efforts rests on understanding the interplay between human actions and ecological systems.
15.2K
01:26Design Example: Sustainability in Concrete Building
424
As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
424
01:21Control System Problem
441
In an open-loop system, such as a basic thermostat, the poles of the transfer function influence the system's response but do not determine its stability. However, when feedback is introduced to form a closed-loop system, such as an advanced thermostat that adjusts heating based on room temperature, stability is governed by the new poles of the closed-loop transfer function.
When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...
When forming a closed-loop system, issues can arise if the poles cross into the unstable region, leading to potential...
441
02:33Combinatorial Gene Control
9.7K
Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
The expression of more than 30,000 genes is controlled by approximately 2000-3000 transcription factors. This is possible because a single transcription factor can recognize more than one regulatory sequence. The specificity in gene...
9.7K
01:23Types of Biopharmaceutical Studies: Controlled and Non-Controlled Approaches
475
Biopharmaceutical studies constitute a vital field aiming to enhance drug delivery methods and refine therapeutic approaches, drawing upon diverse interdisciplinary knowledge. In research methodologies, the choice between controlled and non-controlled studies significantly influences the study's reliability and accuracy.
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
Non-controlled studies, commonly employed for initial exploration, lack a control group, rendering them susceptible to biases and external influences. In contrast,...
475
01:10Control Systems
1.9K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
1.9K