Synthesis and characterization of chitosan-zinc-salicylic acid nanoparticles: A plant biostimulant

Shivraj Sahu, Sneh P. Gautam, Atul K. Singh, Pushpa Lohani, Chhavi Sharma, Puneet Pathak, Anuj D.V.S.L.P.A. Kumar, Hemant Singh

    Research output: Contribution to journalArticlepeer-review

    1 Scopus citations


    The vastly expanding global population raised the demand for profuse food grain production. For food security in India, high yield and nutritional quality of grain crops, both are essential. Zinc is a crucial micronutrient generally deficient in food grains grown in India, reflecting their deteriorating nutritional quality. To address these issues, in the present study, a novel tri-component nanoparticle of chitosan‑zinc-salicylic acid (CS-Zn-SA NPs) has been synthesized by ionotropic gelation method. The average size of synthesized CS-Zn-SA NPs was recorded 13.5 nm by dynamic light scattering (DLS) spectroscopy. The presence of chitosan, zinc and salicylic acid and crosslinking among these components in synthesized nanoparticles has been demonstrated by Fourier transforms infrared (FTIR) spectroscopy and thermogravimetric analysis (TGA). Further, synthesized CS-Zn-SA NPs at various concentrations (50–200 ppm) were evaluated for seed germination via seed priming, yield, grain zinc content and defence enzyme activity through the foliar application. CS-Zn-SA NPs revealed significant seed germination activities, 19.8 % higher grain yield, 45.5 % increased grain zinc content and manyfold defence enzyme activities than the control. The obtained results exposed the potential of CS-Zn-SA NPs as a stimulant for effective seedling development, higher yield, a virtuous micronutrient fortifying agent and defence enzyme promoter. © 2023
    Original languageAmerican English
    JournalInternational Journal of Biological Macromolecules
    Issue number127602
    StatePublished - 2023


    • Chitosan-zinc-salicylic acid nanoparticles
    • Grain zinc content
    • Micronutrient deficiency
    • Nanotechnology
    • Plant biostimulant
    • Plant yield
    • Chitosan
    • Cultivation
    • Dynamic light scattering
    • Fourier transform infrared spectroscopy
    • Nutrients
    • Salicylic acid
    • Seed
    • Synthesis (chemical)
    • Thermogravimetric analysis
    • Trace elements
    • Chitosan-zinc-salicylic acid nanoparticle
    • Defense enzyme
    • Food grain
    • Higher yield
    • Synthesised
    • Zinc content
    • Nanoparticles
    • chitosan nanoparticle
    • growth promotor
    • nanoparticle
    • plant biostimulant
    • salicylic acid
    • trace element
    • unclassified drug
    • zinc nanoparticle
    • chitosan
    • zinc
    • agricultural procedures
    • Article
    • biochemical analysis
    • chemical analysis
    • chemical composition
    • chemical structure
    • concentration (parameter)
    • controlled study
    • cross linking
    • energy dispersive X ray spectroscopy
    • enzyme activity
    • field emission scanning electron microscopy
    • gelation
    • germination
    • grain
    • harvest
    • ionotropic gelation method
    • nanotechnology
    • nonhuman
    • nutritional deficiency
    • particle size
    • photon correlation spectroscopy
    • plant development
    • plant growth
    • plant leaf
    • seed priming
    • seedling
    • synthesis
    • thermogravimetry
    • Triticum aestivum
    • ultraviolet visible spectrophotometry
    • X ray diffraction
    • chemistry
    • food grain
    • Edible Grain
    • Micronutrients
    • Salicylic Acid
    • Zinc


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