The Inhibition of Bean Plant Metabolism by Cd Metal and Atrazine III: Effect of Seaweed Codium iyengarii on Metal, Herbicide Toxicity and Rhizosphere of the Soil

Azmat, Rafia; Hayat, Aliya; Khanum, Tanveer; Talat, Rukhsana; Uddin, Fahim

doi:10.3923/biotech.2006.85.89

Cited by 9 publications

(2 citation statements)

References 9 publications

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“…Seaweeds can specifically accumulate minerals from nearby seawater in their thalli 41 . Their mineral content and distribution are also species and location-specific.…”

Section: Resultsmentioning

confidence: 99%

Chemical and Nutritional Compositions and in vitro Digestibility of Brown and Green Seaweed in Southern Oman

Al-Souti¹,

Gallardo²,

Claereboud³

2022

Asian J. of Plant Sciences

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Background and Objective: Seaweeds have over the last century been identified as a major source of nutritional and medicinal active agents. In this study, brown alga Nizamuddinia zanardinii and green alga Ulva fasciata were evaluated for their chemical compositions. Materials and Methods: Nizamuddinia zanardinii and Ulva fasciata were collected, washed vigorously and dried in shade (the temperature around 30EC) for 2-5 days. After that, chemical and nutritional compositions and in vitro digestibility were assessed. One-way ANOVA was used to compare the chemical composition, minerals and in vitro digestibility of the samples. Multiple comparisons among the samples were performed using a Tukey HSD post hoc test. Results: The 2 most dominant components in both seaweeds were total carbohydrates (51.31-65.05%, dry weight) and ash (16.34-24.22%, dry weight), however their crude lipid (0.08-0.24%, dry weight) and fibre (5.23-5.45%, dry weight) contents were low. Protein content (13.94%, dry weight) of Ulva fasciata was higher than that of N. zanardinii (3.86%, dry weight). Atomic spectrophotometry of the minerals has revealed that U. fasciata contained greater concentrations of macro-minerals (K, Na, Ca, Mg) but a lower amount of trace elements (Fe, Zn) than N. zanardinii. In vitro digestibility assays of total dry matter in these seaweeds showed high digestibility (98.37-99.05%, dry weight) whereas protein digestibility in U. fasciata (90.46%, dry weight) was higher than in N. zanardinii (85.30%, dry weight). Conclusion: The findings show that those seaweeds have a high nutritional benefit and should be used as ideal human and animal dietary supplements.

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“…Seaweeds can specifically accumulate minerals from nearby seawater in their thalli 41 . Their mineral content and distribution are also species and location-specific.…”

Section: Resultsmentioning

confidence: 99%

Chemical and Nutritional Compositions and in vitro Digestibility of Brown and Green Seaweed in Southern Oman

Al-Souti¹,

Gallardo²,

Claereboud³

2022

Asian J. of Plant Sciences

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“…(Besada et al 2009;Wells et al, 2017). Moreover, seaweeds are able to purposively accumulate minerals in their thalli from the seawater (Azmat et al, 2006) and that is why, seaweeds mineral concentrations are species and place specific. This study showed the maximum concentration of Pb was recorded in P. pavonica(20.55 mg/kg-dw) followed by C. sinuosa (16.99 mg/kg-dw) (Table 3).…”

Section: Mineral and Heavy Metal Concentrations In Seaweedsmentioning

confidence: 99%

Minerals and Heavy Metal Composition in Seaweeds of the Eastern Coast, Northern Bay of Bengal, Bangladesh

Chowdhury

Ahmed

Akhter

et al. 2022

Dhaka Univ J Earth Env Sci

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This study aimed to analyze minerals (Ca, Mg, Fe, Zn, Mn and Cu) and heavy metals (Pb and Cd) content of seaweeds collected from coastal waters of Bangladesh using Atomic Absorption Spectrophotometer (AAS). Eight wild species in three phyla viz. Rhodophyta (Hypnea sp.), Chlorophyta (Enteromorphasp.),and Phaeophyta (Sargassumsp.,Hydroclathrusclathratus, Padinapavonica, Colpomeniasinuosa, Petalonia fascia and Dictyotaciliolata)and one cultured Rhodophyta species viz. Hypnea sp. were collected from St. Martin’s Island and Cox’s Bazar, respectively. Results showed minerals and heavy metals concentrations were varied from species to species. Ca concentration was the highest in Phaeophyta (18565 mg/kg-dw) and it was 19 times higher than the value reported in Chlorophyta (950 mg/kg-dw). In contrast, Fe, Zn and Mn were the highest in Rhodophyta. This is because different groups of seaweeds affinity to absorb minerals depend on environmental parameters for example salinity, pH and light intensity, mineral accessibility in sea water and interactions between elements, growth and metabolic factors, etc. Ca content was the highest in C. sinuosa (30890 mg/kg-dw), whereas, it was the lowest in cultured Hypnea sp. (120 mg/kg-dw). P.pavonica showed the highest concentrations of Fe (15030 mg/kg-dw), Zn (33.46 mg/kg-dw) and Mn (443.79 mg/kg-dw). Mineral contents of cultured seaweeds were comparatively lower than the wild species. Results showed mineral concentrations in all seaweeds were relatively greater than heavy metals. However, wild Hypneasp. contained slightly 2 times higher Cd (2.11 mg/kg-dw) than the cultured Hypnea sp. (0.98 mg/kg-dw) due to higher level of anthropogenic source of pollution in St. Martin’s Island. Heavy metal contamination in seaweeds might raise health concerns among the consumers. Findings of this study might help to unleash minerals and heavy metals compositions of the studied seaweeds of Bangladesh. Policy makers can formulate and establish health safety guidelines for safe consumption of seaweeds. The Dhaka University Journal of Earth and Environmental Sciences, Vol. 10(2), 2021, P 43-52

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Environmental Threat to Photochemical and Photobiological Reactions

Azmat

2011

Chemistry for Sustainable Development

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The Inhibition of Bean Plant Metabolism by Cd Metal and Atrazine III: Effect of Seaweed Codium iyengarii on Metal, Herbicide Toxicity and Rhizosphere of the Soil

Cited by 9 publications

References 9 publications

Chemical and Nutritional Compositions and in vitro Digestibility of Brown and Green Seaweed in Southern Oman

Chemical and Nutritional Compositions and in vitro Digestibility of Brown and Green Seaweed in Southern Oman

Minerals and Heavy Metal Composition in Seaweeds of the Eastern Coast, Northern Bay of Bengal, Bangladesh

Environmental Threat to Photochemical and Photobiological Reactions

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