+91 9538798040
Bookmark and Share
 





Preliminary Phytochemical And Anti-Bacterial Studies On The Leaf Extracts of Plumeria rubra linn


LAWAL U[1]., EGWAIKHIDE P. A[2]., LONGBAP D.B.[3], ETIM E. E[4]
Page No. 1-6


Abstract

Preliminary phytochemical screening and anti-bacterial activity of dried leaf extracts of Plumeria
rubra using three solvent in the order of polarity (hexane, ethyl acetate and methanol) was
investigated. The phytochemical screening performed on the crude extracts revealed that the three
extracts contained saponins and steroids. Tannins in ethylacetate and methanol extracts. Cardiac
glycosides in ethylacetate extract, phlobatannins, flavonoids, terpenes and reducing sugar in
methanol extract. The crude extracts were tested for their anti-bacterial activity on some
pathogenic bacteria. Almost all the crude extracts displayed higher inhibitory effects at the tested
concentration (20mg/ml), against four species of Gram negative (klesbsieva pneumonia,
Pseudomonas aeruginosa, Escherichia coli, Pseudomonas fluorescence) and ten Gram positive
(Bacillus subtils, Staphlococcus aureus, Clostridium sporogenes, Staphlococcus epiderm, Bacillus
stearothermophilus, Bacillus cereus, Bacillus anthracis, Streptococcus faecalis, Corynebacterium
phyogenes, and Bacillus polymyxa) bacterial strains; hexane and methanol extracts were the most
active of the three extracts of Plumeria rubra leaf.
Keywords: Phytochemical screening, anti-bacterial activity, Plumeria rubra.


Download complete article in pdf format