Preparation of Fe3O4@UiO-66(Zr)@Ag NPs core-shell-satellite structured SERS substrate for trace detection of organophosphorus pesticides residues

Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2023, Volume and Issue: 294, P. 122548 - 122548

Published: Feb. 24, 2023

Surface-enhanced Raman spectroscopy (SERS) technology has been revived and developed with the introduction of metal-organic frameworks (MOFs), while more valuable properties MOFs for SERS substrates remain largely unexplored. This work constructed a new substrate Fe3O4@UiO-66(Zr)@Ag nanoparticles (FUAs) excellent detection sensitivity, uniformity, reproducibility stability, exhibiting high enhancement factor (5.62 × 106), low limit (LOD, 2.11 10-11 M) RSD (12.41 %) 4-NBT, maintaining 81 % activity within 60 days. The FUAs took full advantage strong affinity UiO-66(Zr) organophosphorus pesticides (OPs) to realize trace OPs detection. LODs phoxim, triazophos methyl parathion in apple juice were 0.041, 0.021 0.0031 mg/L, respectively, good linearities ranging from 0.02 or 0.1-50 meeting requirements food control standards, indicating that potentials prospects detecting foods.

Language: Английский

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Aloe Vera Extract Gel-Biosynthesized Selenium Nanoparticles Enhance Disease Resistance in Lettuce by Modulating the Metabolite Profile and Bacterial Endophytes Composition

ACS Nano, Journal Year: 2023, Volume and Issue: 17(14), P. 13672 - 13684

Published: July 13, 2023

The use of nanotechnology to suppress crop diseases has attracted significant attention in agriculture. present study investigated the antifungal mechanism by which aloe vera extract gel-biosynthesized (AVGE) selenium nanoparticles (Se NPs) suppressed Fusarium-induced wilt disease lettuce (Lactuca sativa). AVGE Se NPs were synthesized utilizing sodium selenite as a source and biocompatible capping reducing agent. Over 21 d, 2.75% total was dissolved into ions, more than 8-fold greater that bare (0.34%). Upon exposure soil applied at 50 mg/kg, fresh shoot biomass significantly increased 61.6 27.8% over infected control NPs, respectively. As compared control, levels citrate, isocitrate, succinate, malate, 2-oxo-glutarate upregulated 0.5–3-fold affected both NPs. In addition, level khelmarin D, type coumarin, 4.40- 0.71-fold controls Additionally, showed upregulation jasmonic acid downregulation abscisic content relative diseased shoots. Moreover, diversity bacterial endophytes with values Shannon index 40.2 9.16% Collectively, these findings highlight potential an effective strategy for nanoenabled sustainable protection.

Language: Английский

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Current Knowledge, Research Progress, and Future Prospects of Phyto-Synthesized Nanoparticles Interactions with Food Crops under Induced Drought Stress

Sustainability, Journal Year: 2023, Volume and Issue: 15(20), P. 14792 - 14792

Published: Oct. 12, 2023

Drought stress threatens global food security and requires creative agricultural solutions. Recently, phyto-synthesized nanoparticles NPs have garnered attention as a way to reduce crop drought. This extensive research examines how improve growth biochemistry in drought-stressed situations. The review begins with an introduction highlighting the urgency of addressing challenges posed by It also highlights significance synthesized from photosynthesis this context. Its purpose is underscore importance sustainable farming practices. approach contrasted conventional methods, elucidating ecological economic advantages NPs. discusses nanoparticles, including titanium dioxide, iron oxide, gold, silver, copper. In addition, we their ability enhance resistance. primary focus elucidate effects on plant development under drought stress. Noteworthy outcomes encompass improvements seed germination, seedling growth, water absorption, photosynthesis, chlorophyll content, activation antioxidant defense mechanisms, modulation hormonal responses. These results potential agents for enhancing mitigating assesses risks using agriculture. Considerations include non-target organisms, soil, environmental impacts. Further needed determine long-term effects, dangers, benefits Nanoparticles offer targeted improving tolerance, outpacing traditional methods ethics balance. Their mechanisms range nutrient delivery molecular regulation. However, impact remains understudied. critical identifying gaps advancing practices amid scarcity.

Language: Английский

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Mitigating Global Challenges: Harnessing Green Synthesized Nanomaterials for Sustainable Crop Production Systems

Global Challenges, Journal Year: 2023, Volume and Issue: 8(1)

Published: Dec. 25, 2023

Green nanotechnology, an emerging field, offers economic and social benefits while minimizing environmental impact. Nanoparticles, pivotal in medicine, pharmaceuticals, agriculture, are now sourced from green plants microorganisms, overcoming limitations of chemically synthesized ones. In these green-made nanoparticles find use fertilizers, insecticides, pesticides, fungicides. Nanofertilizers curtail mineral losses, bolster yields, foster agricultural progress. Their biological production, preferred for friendliness high purity, is cost-effective efficient. Biosensors aid early disease detection, ensuring food security sustainable farming by reducing excessive pesticide use. This eco-friendly approach harnesses natural phytochemicals to boost crop productivity. review highlights recent strides showcasing how green-synthesized nanomaterials elevate quality, combat plant pathogens, manage diseases stress. These advancements pave the way production systems future.

Language: Английский

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Advancements in recyclable photocatalytic semiconductor substrates for SERS detection in food safety applications

Trends in Food Science & Technology, Journal Year: 2023, Volume and Issue: 138, P. 697 - 707

Published: July 12, 2023

Language: Английский

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