Pectin functionalized metal-organic frameworks as dual-stimuli-responsive carriers to improve the pesticide targeting and reduce environmental risks

Liang, You; Wang, Sijin; Jia, Huijuan; Yao, Yijia; Song, Jinhui; Dong, Hezhong; Cao, Yongsong; Zhu, Feng; Huo, Zhongyang

doi:10.1016/j.colsurfb.2022.112796

Cited by 36 publications

(21 citation statements)

References 54 publications

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“…The powder X-ray diffraction pattern ( Figure 1 E) showed pesticide incorporation did not affect the crystal structure of HKUST-1. Similar results were reported by Alavijeh and Liang et al [ 30 , 31 ]. To assess the loading efficiency of imazalil IL-3@HKUST-1, thermogravimetric analysis was used ( Figure 1 F).…”

Section: Resultssupporting

confidence: 92%

Encapsulation of Imazalil in HKUST-1 with Versatile Antimicrobial Activity

Dong

He²,

Fan³

et al. 2022

Nanomaterials

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Based on high surface areas, adjustable porosity and microbicide activity, metal-organic frameworks (MOFs) HKUST-1 are widely used as drug release carriers for their slow degradation characteristics under slightly acidic conditions. In this work, porous HKUST-1 was reacted rapidly by cholinium salt (as the deprotonation agent and template) in an aqueous solution at room temperature. A novel antimicrobial system based on an imazalil encapsulated metal organic framework (imazalil IL-3@HKUST-1) was established. Imazalil IL-3@HKUST-1 could achieve synergism in inhibiting pathogenic fungi and bacteria. Moreover, six days after treatment, the slow and constant release of imazalil from imazalil IL@HKUST-1 exhibited better sustainability and microbicidal activity than imazalil. We believe that the method may provide a new strategy for related plant diseases caused by bacteria or fungi.

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Section: Resultssupporting

confidence: 92%

Encapsulation of Imazalil in HKUST-1 with Versatile Antimicrobial Activity

Dong

He²,

Fan³

et al. 2022

Nanomaterials

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“…For TF, the double peaks at 3216 and 3180 cm −1 were attributed to N−H stretching vibrations, the peak at 1670 cm −1 was attributed to the stretching vibrations of amide bonds, and the peak at 1280−1315 cm −1 was attributed to a C−F bending vibration. For the Fe-MOF and TF@Fe-MOF, the double peaks at 3469 and 3367 cm −1 were generated by stretching vibrations of the amide groups, 37 and the peak at 530 cm −1 was attributed to an Fe−O stretching vibration. 15 In addition, the peak at 1670 cm −1 for TF@Fe-MOF was due to a stretching vibration of the amide bonds, which indicated that TF was loaded.…”

Section: Resultsmentioning

confidence: 99%

Pectin-Coated Iron-Based Metal–Organic Framework Nanoparticles for Enhanced Foliar Adhesion and Targeted Delivery of Fungicides

Yang,

Chen,

Zhu

et al. 2024

ACS Nano

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Conventional agrochemicals are underutilized due to their large particle sizes, poor foliar retention rates, and difficult translocation in plants, and the development of functional nanodelivery carriers with high adhesion to the plant body surface and efficient uptake and translocation in plants remains challenging. In this study, a nanodelivery system based on a pectin-encapsulated iron-based MOF

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“…Pyraclostrobin (PYR), a broad-spectrum methoxyacrylate fungicide, is effective in controlling rice blast caused by Magnaporthe oryzae . However, PYR is highly toxic to aquatic organisms; for instance, the 50% lethal concentrations (LC 50 ) of PYR for 96 h exposure for Hyalella azteca and zebrafish were 25.1 and 61 μg/L, , respectively, posing significant safety risks when used in paddy fields. , Notably, rice blast typically occurs under conditions of high temperature . Consequently, utilizing high temperatures as a trigger for PYR release is a viable strategy to enhance pesticide efficiency and reduce toxicity to aquatic organisms.…”

Section: Introductionmentioning

confidence: 99%

Safe and Intelligent Thermoresponsive β-Cyclodextrin Pyraclostrobin Microcapsules for Targeted Pesticide Release in Rice Disease Management

Li,

Wang,

Jiao

et al. 2024

ACS Appl. Polym. Mater.

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This study presents the development of thermoresponsive pyraclostrobin (PYR) microcapsules (PYR@PNIPAm-MCs) designed for controlled temperature-regulated pesticide release. These microcapsules, characterized by a regular spherical shape, smooth surface, and average size of 7.08 μm, achieved a 14.99% drug loading capacity. Wide-angle X-ray diffraction (WAXD) analysis confirmed the efficient encapsulation of PYR. The release kinetics of PYR from the PYR@PNIPAm-MCs demonstrated a sustained, temperature-sensitive release pattern influenced by drug diffusion and matrix erosion. The efficacy of the PYR@PNIPAm-MCs against Magnaporthe oryzae paralleled that of 97% PYR technical concentrate at elevated temperatures. Acute toxicity assays revealed a significantly reduced toxicity of PYR@PNIPAm-MCs to aquatic life (LC 50 = 7.71 mg/L), and the formulation showed no adverse effects on rice seedling growth. The results underscore the potential of this formulation to enhance the application of PYR in rice disease management, offering targeted release and improved safety profiles.

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Pectin functionalized metal-organic frameworks as dual-stimuli-responsive carriers to improve the pesticide targeting and reduce environmental risks

Cited by 36 publications

References 54 publications

Encapsulation of Imazalil in HKUST-1 with Versatile Antimicrobial Activity

Encapsulation of Imazalil in HKUST-1 with Versatile Antimicrobial Activity

Pectin-Coated Iron-Based Metal–Organic Framework Nanoparticles for Enhanced Foliar Adhesion and Targeted Delivery of Fungicides

Safe and Intelligent Thermoresponsive β-Cyclodextrin Pyraclostrobin Microcapsules for Targeted Pesticide Release in Rice Disease Management

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