Facile preparation of pH/pectinase responsive microcapsules based on CaCO3 using fungicidal ionic liquid as a nucleating agent for sustainable plant disease management

Nano-based Smart Formulations: A potential solution to the Hazardous Effects of Pesticide on the Environment

Mesoporous silica nanoparticles (MSNs) hold promise as safer and more effective medication delivery vehicles for treating oral disorders. As the drug’s delivery system, MSNs adapt to effectively combine with a variety of medications to get over systemic toxicity and low solubility issues. MSNs, which operate as a common nanoplatform for the co-delivery of several compounds, increase therapy effectiveness and show promise in the fight against antibiotic resistance. MSNs offer a noninvasive and biocompatible platform for delivery that produces long-acting release by responding to minute stimuli in the cellular environmen. MSN-based drug delivery systems for the treatment of periodontitis, cancer, dentin hypersensitivity, and dental cavities have recently been developed as a result of recent unparalleled advancements. The applications of MSNs to be embellished by oral therapeutic agents in stomatology are discussed in this paper.

/pdf/the-application-of-mesoporous-silica-nanoparticles-as-a-drug-2v5cekr3.pdf

The application of mesoporous silica nanoparticles as a drug delivery vehicle in oral disease treatment

BACKGROUND
The development of stimulus-responsive and photothermally controlled-release microcapsule pesticide delivery systems is a promising solution to enhance the effective utilization and minimize the excessive use of pesticides in agriculture.


RESULTS
In this study, an AVM@CS@TA-Fe microcapsule pesticide delivery system was developed using avermectin as the model drug, chitosan and tannic acid as the wall materials, and tannic acid-Fe complex layer as the photothermal agent. The optical microscope, scanning electron microscope, transmission electron microscope, and Fourier-transform infrared spectroscope were used to characterize the prepared microcapsule. The slow-release, UV-shielding, photothermal performance, and nematicidal activity of the microcapsule were systematically investigated. The results showed that the system exhibited excellent pH-responsive and photothermal-sensitive performances. In addition, the UV-shielding performance of the delivery system was improved. The photothermal conversion efficiency (η) of the system under the irradiation of near-infrared light (NIR) was determined to be 14.18%. Moreover, the nematicidal activities of the system against pine wood nematode and A. besseyi were greatly increased under the irradiation of light-emitting diode (LED) simulated sunlight.


CONCLUSION
The release of the pesticide-active substances in such a pesticide delivery system could be effectively regulated with the irradiation of NIR or LED-simulated sunlight. Thus, the developed pesticide delivery system may have broad application prospects in modern agriculture fields. This article is protected by copyright. All rights reserved.

Fabrication of a Dual pH-Responsive and Photothermal Microcapsule Pesticide Delivery System for Controlled Release of Pesticides.

The use of nanotechnology has emerged in the agricultural sector. In recent years, several nano-enabled materials have been reported for weed control. Nano-enabled herbicides (also called nanoherbicides) can be designed from organic, inorganic, or hybrid materials. These materials have unique properties such as small size, specific surface area, and the ability to control the release of metal ions and organic molecules in the agricultural field. Some studies have reported the ability of nanoherbicides to provide better weed management compared to non-nanoformulations. However, studies regarding the environmental risk assessment and mechanisms of action of nanoherbicides in plants are still incipient. Nevertheless, they are essential to ensure a safe application for human health and the environment. In this review, we outlined the current understanding of nano-enabled herbicides as well as some strategic design to fabricate nanostructures for weed control. Also, a critical discussion regarding the fate, behavior and effects of nanoherbicides in plants was addressed in order to achieve products for environmentally friendly and sustainable agriculture. 

Nano-enabled weed management in agriculture: from strategic design to enhanced herbicidal activity

A controlled release formulation based on silica microcapsules is an ideal selection to improve both the effective utilization and duration of pesticides to decrease ecological damage. Herein, a simple and green method for preparing double-shelled microcapsules was developed using a newly prepared quaternary ammonium ionic liquid (IL) as the functional additive to entrap avermectin (Ave) in mesoporous silica nanospheres (MSNs) and tannic acid-Cu (TA-Cu) complex as the sealing agent to form the core-shell structure (Ave-IL@MSN@TA-Cu). The obtained microcapsules with an average size of 538 nm had pH-responsive release property and good stability in soil. The half-life of microcapsules (34.66 days) was 3 times that of Ave emulsifiable concentrate (EC) (11.55 days) in a test soil, which illustrated that microcapsules could protect Ave from rapid degradation by microorganisms by releasing TA, copper, and quaternary ammonium in the soil. Ave-IL@MSN@TA-Cu microcapsules had better nematicidal activity and antibacterial activity than Ave EC due to the synergistic effect of Ave, IL, and copper incorporated in the microcapsules. Pot experiments showed that the control efficacy of microcapsules was 87.10% against Meloidogyne incognita, which is better than that of Ave EC (41.94%) at the concentration of 1.0 mg/plant by the root-irrigation method after 60 days of treatment owing to the extended duration of Ave in microcapsules. The simple and green method for the preparation of double-shelled microcapsules based on natural quaternary ammonium IL would have tremendous potential for the extensive development of controlled release pesticide formulations.

One-Pot Facile Synthesis of Double-Shelled Mesoporous Silica Microcapsules with an Improved Soft-Template Method for Sustainable Pest Management.

Controlled release of herbicides by 2,4-D-, MCPA-, and bromoxynil-intercalated hydrotalcite nanosheets

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One-Pot Facile Synthesis of Double-Shelled Mesoporous Silica Microcapsules with an Improved Soft-Template Method for Sustainable Pest Management.

Controlled release of herbicides by 2,4-D-, MCPA-, and bromoxynil-intercalated hydrotalcite nanosheets