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12 results on '"Kumari, Tamanna"'

8. Assessment of an Organophosphate Pesticide Particularly Malathion on Earthworm: A Review

Author

Kumari Tamanna, Bikal Prerna, and Shukla Vineeta

Subjects
General Medicine
Abstract

Aristotle called earthworms the “intestines of the earth” whereas “natures plough” name was allotted by Charles Darwin. The functioning of earthworms has been admired for a long time. They play a constructive aftermath on various ecosystem services like pedogenesis, nutrient cycling, water recycling, and other non-material aids. Earthworm allures more recognition of capability to convert solid waste into beneficial material termed as “vermicompost”. Malathion as an organophosphate pesticide is most used in agriculture and household applications to control pests. Malathion falls under EPA toxicity class III as a slightly toxic compound. Malathion is a standout amongst the most broadly utilized organo-phosphorous. Its fast detoxification is caused by mammalian carboxylesterases present in the liver and different tissues. It acts as acetylcholinesterase inhibitors and its relatively low poisonous quality and short half-life add to its prevalence.

Published
2022

11. Validation of phytochemicals, antioxidant activity and characterization of green synthesized iron nanoparticles: A comparison

Author

Kumari, Tamanna, Shukla, Vineeta, Kumari, Tamanna, and Shukla, Vineeta

Abstract

Research on green synthesis in nanotechnology is a forthcoming field in the modern material science area. Potentiality utilization of metal and semiconductor nanoparticles is an area of vast research that makes them a suitable candidate for expanding highly innovative technologies. This study evaluated the effect of the drying method for leaves of the plant, Azadirachta indica on phytochemicals characteristics of extracts, bioactivity attributes and characteristics of nanoparticles (NPs) accommodating varied keen compounds. Synthesis of iron (Fe) nanoparticles was done using the green bottom-up method, in which aqueous extract of A. indica leaves acted as an extremely promising reducing and stabilizing agent. Various characterization techniques such as EDX (Energy Dispersive X-Ray Analysis), FESEM (Field Emission Scanning Electron Microscopy), FT-IR (Fourier Transform Infrared Spectroscopy), UV-VIS spectroscopy, XRD (X-Ray Diffraction) crystallography, Zeta potential and sizer confirmed the fabrication of iron nanoparticles. The quantification results established that oven-dried leaves extract had a higher total phenolic content (108.23 mg GAE/g) and free radical scavenging capacity (250.165 mg GAE/g) than air-dried leaves extract. Characterization results endorsed that air-dried leaves extract acted as an advanced reducing agent that can swap the time consuming and perilous chemical synthesis of nanoparticles for a scalable formulation. The clear, intense XRD peaks revealed the crystalline nature of NPs, EDX results confirmed the purity of samples and finally, FT-IR analysis exhibited the presence of phytomolecules along with Fe NPs in final product obtained.

Published
2021

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