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Zinc Oxide nanoparticles synthesis by use of aqueous extracts of Muntingia calabura L.

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Manokari M., Shekhawat M. S.
World News of Natural Sciences
|
2019
|
vol. 22
31-40
EN
Biological synthesis of metal nanoparticles gained worldwide interest due to their rapid, non-toxic, economical, single-step technique and eco-friendly alternative. Green-chemical approach of production of Zinc Oxide (ZnO) nanoparticles (NPs) has been exploited in the field of medicine, food packaging, nano-optical and electrical devices. Muntingia calabura is a multipotent medicinal plant with astounded biological activities and phytoconstituents. The nanoparticles obtained using aqueous extracts of various parts of M. calabura were characterized with UV-VIS spectroscopy to obtain information concerning the optical properties of synthesized ZnO nanoparticles. The proposed green and economical method could be used for large scale production of nanostructures because of its advantages over other physical and chemical methods.
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An updated review on Cissus vitiginea L. (Family: Vitaceae) - An important medicinal climber

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Manokari M., Shekhawat M. S.
World News of Natural Sciences
|
2019
|
vol. 22
75-83
EN
Cissus vitiginea L. is a perennial climber with potent medicinal values and used in Indian traditional systems of medicines to cure wounds, diabetes, cardiovascular illness, cancers, particularly bone diseases and arthritis. This plant is kept under rare category in certain parts of India due to its imprudent harvesting from the wild. Assortment of literature on phytochemical studies of this plant shows the presence of alkaloids, flavonoids, triterpenoids, steroids, glycosides, coumarin, tannins, sugar, proteins etc. The reported secondary metabolites have been reviewed to possess immense biological activities in living systems. In the present review, we have summarized the information concerning the botanical description, phytochemistry, toxicology, pharmacology and the traditional medicinal uses of C. vitiginea. It has been concluded that this plant has not been well explored for its various biological activities and the alternate methods of propagation to increase its natural population in the wild.
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Biological Approach for the Synthesis and Characterization of Zinc Oxide Nanopaticles from Croton bonplandianum Baill. Extracts

100%
Manokari M., Shekhawat M. S.
World News of Natural Sciences
|
2018
|
vol. 19
95-107
EN
The biogenesis of nanoparticles recently gained more attention. Here, we report the biogenesis of zinc oxide (ZnO) nanoparticles using aqueous extracts of the leaves, stem, root, flowers and fruits of Croton bonplandianum Baill. at room temperature. Croton bonplandianum is an important medicinal plant used to cure many pathological conditions in the traditional systems of Indian medicines due to the presence of important and specific bioactive compounds in the plant parts of this plant. Aqueous solution of Zinc Nitrate hexahydrate [Zn(NO3)2·6H2O] was used as a precursor and the various plant extracts played as reducing agents. The formation of ZnO nanoparticles was monitored by UV-Visible spectrophotometric analysis. The leaf extract showed strong absorbance peak at 302 nm, stem and fruit at 293 nm, root at 290 nm and flowers at 305 nm.
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