Algae of economic importance that accumulate cadmium and lead: a review

Souza, Priscila Oliveira de; Ferreira, Lizângela R.; Pires, Natanael R. X.; Filho, Pedro José Sanches; Duarte, Fábio A.; Pereira, Cláudio M. P.; Mesko, Márcia F.

doi:10.1590/s0102-695x2012005000076

Cited by 45 publications

(15 citation statements)

References 142 publications

(177 reference statements)

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“…The displacement of iron triggers cytochrome-C-oxidase complex malfunction and results in oxidative stress. By replacing magnesium in chlorophyll, cadmium decreases light-harvesting ability of the vegetation [16]. Moreover, cadmium is a toxicant which endangers almost all living organisms.…”

Section: Resultsmentioning

confidence: 99%

Fucoxanthin and heavy metals in brown algae of genus Cystoseira C. Agardh from water areas with different anthropogenic influences (Black Sea)

Ryabushko

Празукин

Гуреева

et al. 2017

mbj

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Поступила в редакцию 01.02.2017 г. Принята к публикации 23.06.2017 г.Brown algae are recognized as bioindicators of heavy metal contamination in coastal waters. Comparison of morphological and functional characteristics of algae living in different environmental conditions is essential for understanding mechanisms of marine organism adaptation to anthropogenic environmental impact. The aim of this study is to determinate concentration of fucoxanthin and heavy metals in branches of brown seaweeds Cystoseira barbata (Stackhouse) C. Agardh and Cystoseira crinita Duby in water areas with different anthropogenic pressures. The content of fucoxanthin in the samples is determined by means of thin layer chromatography, and heavy metals are quantified using atomic absorption spectrophotometry. The maximum concentrations of fucoxanthin (3 mg·g -1 of dry weight), lead (48.5 μg·g -1 ), zinc (62.6 μg·g -1 ), and cadmium (3.2 μg·g -1 ) are found in branches of 2-to 3-month-old seaweeds. The content of fucoxanthin in the branches of C. barbata is 1.5 times higher than that in C. crinita. The Cystoseira seaweeds living in a eutrophic bay have higher concentrations of the pigment and zinc than the macrophytes from open waters. The elevated levels of fucoxanthin in brown algae of this genus found in eutrophic and heavy-metal-polluted water areas demonstrate the important role of this carotenoid in the adaptation of the algal photosynthetic apparatus to anthropogenic environmental changes.

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Section: Resultsmentioning

confidence: 99%

Fucoxanthin and heavy metals in brown algae of genus Cystoseira C. Agardh from water areas with different anthropogenic influences (Black Sea)

Ryabushko

Празукин

Гуреева

et al. 2017

mbj

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“…Algae may accumulate heavy metals. Since algae are at the bottom of the aquatic food chain pyramid, they are the most important vector for transfer of pollution to upper levels of the trophic chain in aquatic environments (Souza and others ). Sludge‐grown algae contain a rather substantial amount of heavy metals that may impose adverse effects to higher trophic organisms (Hung and others ; Wong and others ).…”

Section: Novel Proteinsmentioning

confidence: 99%

Safety of Novel Protein Sources (Insects, Microalgae, Seaweed, Duckweed, and Rapeseed) and Legislative Aspects for Their Application in Food and Feed Production

Spiegel

Noordam

Fels‐Klerx

2013

Comp Rev Food Sci Food Safe

434

179

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Novel protein sources (like insects, algae, duckweed, and rapeseed) are expected to enter the European feed and food market as replacers for animal-derived proteins. However, food safety aspects of these novel protein sources are not well-known. The aim of this article is to review the state of the art on the safety of major novel protein sources for feed and food production, in particular insects, algae (microalgae and seaweed), duckweed, and rapeseed. Potential hazards for these protein sources are described and EU legislative requirements as regard to food and feed safety are explained. Potential hazards may include a range of contaminants, like heavy metals, mycotoxins, pesticide residues, as well as pathogens. Some safety aspects of novel protein sources are intrinsic to the product, but many potential hazards can also be due to production methods and processing conditions. These aspects should be considered in advance during product development. European law is unclear on several issues regarding the use of novel protein sources in food and feed products. For food product applications, the most important question for food producers is whether or not the product is considered a novel food. One of the major unclarities for feed applications is whether or not products with insects are considered animal-derived products or not. Due to the unclarities in European law, it is not always clear which Regulation and maximum levels for contaminants apply. For market introduction, European legislation should be adjusted and clarified.

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“…Oswald et al (1957) reported designs of natural treatment systems empowered primarily by solar energy, making wastewater treatment more affordable and sustainable. Wastewater treatment with microalgae, also referred to as Phycoremediation, is a term coined recently by John (2000), as given by Souza et al (2012). Phycoremediation is particularly attractive because it has the ability to deal with more than one problem on-site.…”

Section: Introductionmentioning

confidence: 99%

Phycoremediation of wastewaters: a synergistic approach using microalgae for bioremediation and biomass generation

Renuka

Sood

Prasanna

et al. 2014

Int. J. Environ. Sci. Technol.

167

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Discharge of untreated domestic and industrial wastewater into aquatic bodies is posing a serious eutrophication threat, leading to a slow degradation of the water resources. A number of physical, chemical and biological methods have been developed for the treatment of wastewaters; among these, the use of microalgae is considered as a more eco-friendly and economical approaches. Microalgae are versatile organisms which perform multiple roles in the environment-bioremediation of wastewater, gleaning of excess nutrients and in turn, generate valuable biomass which finds applications in the food, biofuel and pharmaceutical industries. They are currently being utilized to reduce the high nutrient load (especially N and P) from wastewaters, which fulfill the growth requirements of microalgae, making it a suitable cultivation medium for biomass production. The present review represents a comprehensive compilation of reports on microalgal diversity of wastewaters, followed by a critical overview of their utilization, suitability and potential in bioremediation vis-a-vis biomass production. This review also emphasizes the superiority of polyalgal and consortial approaches in wastewater treatment, as compared to the use of unialgal inocula, besides providing useful pointers for future research needs in this area.

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Algae of economic importance that accumulate cadmium and lead: a review

Cited by 45 publications

References 142 publications

Fucoxanthin and heavy metals in brown algae of genus Cystoseira C. Agardh from water areas with different anthropogenic influences (Black Sea)

Fucoxanthin and heavy metals in brown algae of genus Cystoseira C. Agardh from water areas with different anthropogenic influences (Black Sea)

Safety of Novel Protein Sources (Insects, Microalgae, Seaweed, Duckweed, and Rapeseed) and Legislative Aspects for Their Application in Food and Feed Production

Phycoremediation of wastewaters: a synergistic approach using microalgae for bioremediation and biomass generation

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