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Descriptors for Taro
Definitions and use of the descriptor; Passport; Management; Environment and site; Characterization; Evaluation.
Synthesis of nanoparticles (Ag, Cu and Zn) from plant latex (Colocasia esculenta; Ficus exasperata; Hevea brasilliensis; Musa paradisiaca; Croton variegatum) and evaluation of antibacterial activity
Nanotechnology is the field of study of materials at nanoscale. It involves the production, manipulation, and use of materials ranging in size from less than one micron to that of individual atoms from not only chemical approaches but also biological materials. Silver, Copper and Zinc nanoparticles were successfully synthesised from Silver nitrate, Copper sulphate and Zinc sulphate respectively through a simple green and natural route using latex of 5 different plant taxa. Nanoparticle formation was proved by UV-vis spectroscopy. The antimicrobial well diffusion method used was give information about the antibacterial activity of latex nanoparticles towards 5 different bacterial species by measuring the zone of inhibition. The use of two dilutions of latex solution was used for the comparative study of zone of inhibition. As nanoparticles have great application in medical world like gene therapy, cancer therapy, drug delivery, etc. So medical world also accept the plant world for nanoparticle synthesis and mainly welcome the angiosperms for their potentiality of synthesis of non-polluted, environmentally acceptable, safety for human health nanoparticles.
Pharmacognostic And Hptlc Studies On Colocasia Esculenta Leaves
Colocasia esculenta is a traditional crop (Family Araceae), also known as Arvi & Ghuiya. It is a herbaceous perennial plant cultivated as annuals. The large green leaves are often described as 'elephant's ear'. Leaves contain calcium oxalate, fibers, minerals (calcium, phosphorus, etc.) and starch, vitamin A, B, C, thiamine, Gallic acid, Quercetin and -sitosterol. Traditionally, Leaf juice is stimulant, expectorant, astringent, otalgia and applied over scorpion sting or snake bite. Petiole juice is used as, ear ache, otorrhoea, and stimulant, rubefacient. Juice of corm is used in alopecia, hepatic ailment. Internally, acts as laxative, demulcent, anodyne, galactogogue, piles, and asthmatic. Ayurveda identified ailments viz Vata and Pitta are supposed to be pacified by the leaf juice and also the constipation, stomatitis, alopecia. Extracts from this plant have been found to possess various pharmacological activities as anti-inflammatory, anti-microbial, anti-diabetic, anti-cancer, neuropharmacological activity, anthelmintic activity, anti- hepatotoxic activity. However, HPTLC work on Colocasia esculenta has not yet been reported."
