Toxic metal distribution in the core sediment of cochin estuarine system [CES]

This article present the result from a study of two sediment cores collected from the environmentally distinct zones of CES. Accumulation status of five toxic rnetals: Cadmium [Cd], Chromium [Cr], Cobalt [Co], Copper [Cu] and Lead [Pb] were analyzed. Besides texture and CHNS were determined to understand the composition of the sediment. Enrichment Factor [EF] and Anthropogenic Factor [AF] were used to differentiate the typical metal sources. Metal enrichment in the cores revealed heavy load at the northern [NS] region compared with the southern zone [SS1] Elevation of metal content in core NS[1] showed the industrial input. Statistical analyses were employed to understand the origin of metals in the sediment samples. Principal Component Analysis [PCA] distinguishes the two zones with different metal accumulation capacity: highest at NS[1] and lowest at SS[1] Correlation analysis revealed positive significant relation only in core NS adhering to the exposition of the intensified industrial pollution

Antimicrobial activity of extracts and isolates of the leaves of Plumeria alba Linn.

Disc diffusion method was employed to determine the effect of methanol, chloroform and acetone extracts of the dried leaves of Plumeria alba Linn. [Apocyitaceac] against fungi [Candida albicans] and bacteria [Bacillus subtilis, Proteus vulgaris Staphylococcus aureus. Pseudomonas aeruginosa, Streptococcus fecalis, Escherichio coil, Staphylococcus albus and Klebsiella pneumoniae]. The methanol and acetone extracts exhibited a prominent antimicrobial activity. The methanolic and acetone extracts were further fractionated by column chromatography to yield 2 pure isolates. The methanol pure component-2 [MPC[2]-50% Ethyl acetate:Methanol] and Acetone pure component-2 [APC[2]-70% Acetone:Ethyl acetate] have shown significant activity against all organisms used except Klebsiella