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Abstract

PHYTOCHEMICAL ANALYSIS AND ANTIOXIDANT ACTIVITY OF ETHANOLIC EXTRACTS OF TAGETES ERECTA AND ZINGIBER OFFICINALE

T. Mohammad Munawar* and D. Muralidhara Rao

ABSTRACT

Natural drugs play important and vital role in the modern medicine. It is usually used to cure some diseases which may not be treated by conventional medicine. Drugs from the plants are easily available less expensive, safe and efficient and rarely have side effects. The alkaloids, tannins, flavanoids and phenol compounds play a major role in preventing various chronic diseases by a definite physiological action on the human body like anticancer, antimicrobial, antioxidant and anti-diabetic activities. The aim of the present study was to evaluate the phytochemical analysis and antioxidant activity of ethanolic extract of Flowers of Tagetes Erecta and rhizome of Zingiber Officinale. Phytochemical screening was carried out for ethanolic extract revealed the presence of various bioactive components include alkaloids, carbohydrates, proteins and saponins. Antioxidant activity was assayed by the 2,2-Diphenyl- 1-picrylhydrazyl (DPPH) free radical scavenging activity, nitroblue tetrazolium (NBT) and ferric reducing power (FRAP). In all the assays, stem extract exhibited stronger antioxidant activity than that of flowers. The present results showed antibacterial and antioxidant activity of the extracts was found to be positively associated with the total phenolic and flavonoid content of the extracts.

Keywords: Antibacterial activity, Antioxidant activity, Tagetes Erecta, Zingiber Officinale, 2,2-Diphenyl-1-picrylhydrazyl (DPPH), ferric reducing power (FRAP).


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