The seaweed (green macroalgae), Ulva sp. as bioindicator of metal pollution in the Mediterranean Coast, Alexandria region, Egypt

Saeed, Samir M.; Moustafa, Yasser T. A.

doi:10.21608/ejabf.2013.2177

Cited by 4 publications

(1 citation statement)

References 24 publications

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“…Several studies showed that, Ulva rigida accumulates these toxic metals, especially lead, in significant amounts. (Haritonidis & Malea, 1999;Saeed & Moustafa, 2013;Ustunada, Erdugan, Yilmaz, Akgul, & Aysel, 2011). This research also showed that, the sampling station of Ulva rigida was more reliable in terms of lead and cadmium pollution having regard to these low values.…”

Section: Resultssupporting

confidence: 54%

The Elemental Composition of Green Seaweed (Ulva rigida) Collected from Çanakkale, Turkey

Berik¹,

Çankırılıgil²

2019

Aquatic Sciences and Engineering

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Seaweeds or marine algae are rich in terms of minerals. They are used as food source due to the quality of their biological content in many countries. In this study, the elemental composition of green seaweed (Ulva rigida) was determined seasonally. Sampling was carried out seasonally from Turkey's Çanakkale strait and the collected algae were analyzed both wet and dried according to the Nordic Committee on Food Analysis (method 186). According to the results; calcium, potassium, magnesium, sodium were found as macro elements and boron, barium, chromium, copper, iron, manganese, zinc as micro elements and determined within the legal limits stated by food codex. However, neither cobalt nor nickel as trace metals were detected in all groups. Moreover, lead and cadmium (which are considered hazardous) were also not detected. While Mg was found to be the highest macro element in all seasons in wet algae, the highest macro mineral varied in dried algae is Ca in spring, K in summer and Mg in both autumn and winter. Fe was found to be the highest micro mineral followed by B, Zn, Mn and Cu both by season and by dried or wet ones (P<0.05).

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Section: Resultssupporting

confidence: 54%

The Elemental Composition of Green Seaweed (Ulva rigida) Collected from Çanakkale, Turkey

Berik¹,

Çankırılıgil²

2019

Aquatic Sciences and Engineering

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Bioaccumulation level of metals and health risk assessment of selected red and green seaweeds validated by ICP-MS

Pasumpon

Varma

Vasudevan

2023

Environ Sci Pollut Res

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Nutritional evaluation of green macroalgae, Ulva sp. and related water nutrients in the Southern Mediterranean Sea coast, Alexandria shore, Egypt

Botany¹,

Moustafa²,

Saeed³

2014

Egyptian Academic Journal of Biological Sciences, H. Botany

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Protein, carbohydrate, lipid, ash, chlorophyll (a; b , c and total chlorophyll), organic carbon and moisture contents of the macroalgae Ulva sp. (Chlorophyta) were studied in corresponding to the water nutrient concentrations in the different sites and seasonal variations over one year, 2012. The water and macroalgae samples were collected monthly from rocky and sandy sites, Ras Al-Tin (site A) and El-Muntazah (Site B) along 18.6 Km distance of Alexandria shore, Egypt. The results showed that the studied areas are rich in nutritive elements at high concentrations. As the chemical analysis elucidated that Ulva sp. powder was characterized by a high contents of protein (20.7-27.6% DW), lipid (8.7-15.75% DW), carbohydrates (42.31-51.37% DW) and moderate ash content (15.32-20.53% DW), with the peaks of lipid and minerals contents in winter, the peaks of carbohydrates contents in spring, peaks of organic carbon in summer and the peaks of protein and phosphorus contents in autumn. The high nutrients contents of Ulva sp. confirm the high nutrient storage capacity of Ulva in this area, indicating that, on one hand, it could be used as biofilters in the aquaculture systems and for bioremediation purpose. On the other hand, the proximate composition nominates Ulva to be exploited as a good food and energy resource for human; animals and in aquaculture. Also, it could be used in several industries such as food and cosmetics industries, for its high carbohydrate contents. Remarkable seasonal variations were recorded in the contents of the studied parameters in the Ulva samples. The N:P and C:P ratios indicated that these algae at the studied areas may experience phosphorus limitation in particular seasons during the annual cycle. Significant positive correlations were noticed between, carbon-nitrogen and carbon-phosphorus as well as between total chlorophyll and both of total phosphorus (P<0.05) and total chlorophyll (P<0.01).

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The seaweed (green macroalgae), Ulva sp. as bioindicator of metal pollution in the Mediterranean Coast, Alexandria region, Egypt

Cited by 4 publications

References 24 publications

The Elemental Composition of Green Seaweed (Ulva rigida) Collected from Çanakkale, Turkey

The Elemental Composition of Green Seaweed (Ulva rigida) Collected from Çanakkale, Turkey

Bioaccumulation level of metals and health risk assessment of selected red and green seaweeds validated by ICP-MS

Nutritional evaluation of green macroalgae, Ulva sp. and related water nutrients in the Southern Mediterranean Sea coast, Alexandria shore, Egypt

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