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Document Type |
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Article In Journal |
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Document Title |
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Elemental Composition and Bioactivity of Seaweeds from Coastal Areas of Karachi, Pakistan التركيب العنصري والناشط الحيوي للطحالب في المناطق الساحلية لكراتشي - باكستان |
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Subject |
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Marine Biology |
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Document Language |
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English |
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Abstract |
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Sixteen species of green, brown and red seaweeds from Pakistan were analyzed
for their elemental composition by Atomic Absorption Spectrometry and several
significant elements like Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Na, Pb and Zn were detected
quantitatively. Among these elements Ca, Fe, K, Mg, and Na, were found in large
amount (13646-97006 ppm), Cr, Cu, Pb and Zn were present in small quantities
(7.37-15.96 ppm) while Cd and Co, were detected in extremely small amounts (2.16-
5.89 ppm). The average quantity of Na was found to be the highest among these algae
(97006.543 ppm) followed by K (64119.75 ppm) and Ca (22735.47 ppm). The average
amounts of Co (5.89 ppm) and Cr (7.372 ppm) were quite low, Cd was detected in
the lowest quantity (0.5-3.95). Eight species of seaweeds were also tested for antifungal
activity showing moderate activity against Aspergillus niger, Microsporum canis,
Pseudallescheria boydii, Trichophyton simii, poor activity against Fusarium solani
and Macrophomina phaseolina. Sargassum vulgare appeared to be most active while
Gracilaria corticata was the least active, Codium iyengarii, Ulva lactuca occupied intermediate
position. In general, human pathogens were most sensitive against the
above four seaweeds and plant pathogens proved to be the least sensitive, while animal
pathogens appeared to be as intermediate. |
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ISSN |
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1012-8840 |
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Journal Name |
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Marine Scienes Journal |
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Volume |
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12 |
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Issue Number |
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1 |
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Publishing Year |
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1421 AH
2001 AD |
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Number Of Pages |
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6 |
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Article Type |
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Article |
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Added Date |
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Sunday, October 11, 2009 |
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