ArticleMikrochimica acta2025
Pine needle-derived oxidase-like Mn nanozymes: sustainable nanozyme, scalable synthesis, and visual and colorimetric nitrite detection.
Article in Mikrochimica acta, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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5 citing papers in PubMed.
- Mild-condition green synthesis of manganese nanoparticles for next-generation broad-spectrum antibacterial applications.RSC advances · 2026Article
- MnOMikrochimica acta · 2026Article
- Bioengineered Ag/AgCl nanoparticles fromNanoscale advances · 2026Article
- Dual mode fluorescence and spectrophotometric cefixime sensing using onion juice nitrogen doped carbon dots with smartphone and paper strip readouts.Scientific reports · 2025Article
- Manganese oxide (MnOScientific reports · 2025Article
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3 authors.
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Abstract
Manganese nanoparticles (Mn NPs) were successfully synthesized using a cost-effective and eco-friendly biogenic approach, with pinus brutia pine needles. The produced Mn NPs were thoroughly characterized using common spectroscopic and microscopic techniques. The Mn NPs exhibited remarkable oxidase-like activity, effectively catalyzing the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) to its oxidized form (oxTMB) over a broad temperature range. This robust catalytic performance highlights their versatility and stability under varying thermal conditions, making them suitable for diverse applications. Nitrite forms orange-yellow color via diazotization of the blue oxTMB. An image processing algorithm analyzes the image changes induced by addition of nitrite. Under optimized conditions, the visual-based platform demonstrated a broad linear response for NO₂⁻ detection, spanning 0.0-58.0 uM and the detection limit was 0.11 μM. The visual method demonstrated exceptional sensitivity and recovery for nitrite detection in food samples. Combining simplicity, cost-effectiveness, and eco-friendliness, this instrument-free approach ensures accurate, portable, and point-of-care nitrite detection, ideal for real-world food testing applications.
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