A simple and rapid algal assay kit to assess toxicity of heavy metal-contaminated water

Eom, Heonseop; Park, Minseung; Jang, Am; Kim, Seung Gyu; Oh, Sang‐Eun

doi:10.1016/j.envpol.2020.116135

Cited by 19 publications

(13 citation statements)

References 68 publications

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“…A universally valid value for a minimum reproducibility is not considered reasonable for the different toxicity tests and therefore recommendations for reasonable variation of ring test results have not been specified [29]. Our results resemble those presented and discussed by other authors with the same type of questions for similar bioassays mostly in the reproducibility range from 15 to 40%, but also including occasionally higher figures [30][31][32][33][34][35][36]. Thus, reproducibility in this study can be judged as very good for bacteria, daphnia, and fish egg tests.…”

Section: Discussionsupporting

confidence: 45%

Ecotoxicological evaluation of construction products: inter-laboratory test with DSLT and percolation test eluates in an aquatic biotest battery

Heisterkamp

Ratte²,

Schoknecht

et al. 2021

Environ Sci Eur

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Background A European inter-laboratory test with 29 participating laboratories investigated whether a battery of four ecotoxicological tests is suitable for assessing the environmental compatibility of construction products. For this purpose, a construction product was investigated with the dynamic surface leaching test (DIN CEN/TS 16637-2) and the percolation test (DIN CEN/TS 16637-3). The eluates were produced centrally by one laboratory and were tested by the participants using the following biotests: algae test (ISO 8692), acute daphnia test (ISO 6341), luminescent bacteria test (DIN EN ISO 11348), and fish egg test (DIN EN ISO 15088). As toxicity measures, EC50 and LID values were calculated. Results Toxic effects of the eluates were detected by all four biotests. The bacteria test was by far the most sensitive, followed by the algae test and the daphnia test; the fish egg test was the least sensitive for eluates of both leaching tests. The toxicity level of the eluates was very high in the bacteria, daphnia, and algae test, with lowest ineffective dilution values of LID = 70 to LID = 13,000 and corresponding EC50 values around or even below 1 volume percent. The reproducibility (approximated by interlaboratory variability) of the biotests was good (< 53%) to very good (< 20%), regardless of the toxicity level of the eluates. The reproducibility of the algae test was up to 80%, and thus still acceptable. Conclusion It can be confirmed that the combination of leaching and ecotoxicity tests is suitable to characterize with sufficient reproducibility the environmental impact posed by the release of hazardous substances from construction products.

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Section: Discussionsupporting

confidence: 45%

Ecotoxicological evaluation of construction products: inter-laboratory test with DSLT and percolation test eluates in an aquatic biotest battery

Heisterkamp

Ratte²,

Schoknecht

et al. 2021

Environ Sci Eur

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“…In terms of algal food safety testing technology, the measurement of mercury content in algae food from the original chemical method to the present rapid determination, for example, a simple and rapid detection kit for the toxicity of heavy metal-polluted water [ 96 ] and a method for the rapid determination of mercury content in spirulina health food, were established ( Table 2 ). Therefore, food manufacturing industries need to observe changes in mercury content in algal food during different preparation, processing, and preservation processes, in order to better evaluate and control mercury levels in seaweed products.…”

Section: Chemical Factors Affecting Food Safety In Algaementioning

confidence: 99%

Current Status and Future Trends in Removal, Control, and Mitigation of Algae Food Safety Risks for Human Consumption

Zhuang

Chew

et al. 2022

Molecules

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With the rapid development of the economy and productivity, an increasing number of citizens are not only concerned about the nutritional value of algae as a potential new food resource but are also, in particular, paying more attention to the safety of its consumption. Many studies and reports pointed out that analyzing and solving seaweed food safety issues requires holistic and systematic consideration. The three main factors that have been found to affect the food safety of algal are physical, chemical, and microbiological hazards. At the same time, although food safety awareness among food producers and consumers has increased, foodborne diseases caused by algal food safety incidents occur frequently. It threatens the health and lives of consumers and may cause irreversible harm if treatment is not done promptly. A series of studies have also proved the idea that microbial contamination of algae is the main cause of this problem. Therefore, the rapid and efficient detection of toxic and pathogenic microbial contamination in algal products is an urgent issue that needs to be addressed. At the same time, two other factors, such as physical and chemical hazards, cannot be ignored. Nowadays, the detection techniques are mainly focused on three major hazards in traditional methods. However, especially for food microorganisms, the use of traditional microbiological control techniques is time-consuming and has limitations in terms of accuracy. In recent years, these two evaluations of microbial foodborne pathogens monitoring in the farm-to-table chain have shown more importance, especially during the COVID-19 pandemic. Meanwhile, there are also many new developments in the monitoring of heavy metals, algal toxins, and other pollutants. In the future, algal food safety risk assessment will not only focus on convenient, rapid, low-cost and high-accuracy detection but also be connected with some novel technologies, such as the Internet of Things (artificial intelligence, machine learning), biosensor, and molecular biology, to reach the purpose of simultaneous detection.

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“…The various ways in which algae support the restoration of ecosystems and environment are:i) Sequestration of CO2 and capture of other flue gases ii) Nutrient recovery from wastewaters iii) Provide oxygen to the aquatic biota iv) Algal blooms are potential carbon and nutrient sink in ocean ecosystems v) Biodegradation of various EPs vi) Biodegradation of microplastics vii) Renewable alternative to fossil fuels and petrochemical products viii) Support organic farming and form biofertilizer ix) Algae are biomonitoring tool for detection of pollutants and heavy metals Certain heavy metals such as Hg 2+ , Cr 6+ , Cd 2+ and Pb 2+ inhibit the photosynthetic activity and so the oxygen evolution by algae. A rapid and suitable heavy metal test kit is formed using microalga Chlorella vulgaris in which the toxicity of heavy metals (in terms of concentration) in water sample is assessed through oxygen evolution by alga [15].…”

Section: Related Workmentioning

confidence: 99%

Algae Based Solutions for Polluted Environments to Restore Ecosphere Equilibrium

Kaur¹,

Reddersen²

2022

IJEPR

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The polyphyletic group of photosynthetic organisms which are commonly called algae have acquired evolutionary significant repertoire of genes from diverse groups of microorganisms including heterotrophic bacteria. Algae occur in different colours, morphologies, sizes, and habitats. The mosaic genomes of algae code for cellular and bio-chemical machinery to support their existence in varied habitats ranging from open oceans to oligotrophic lakes, from polar caps to the hotsprings and from pristine waters of mountains to anthropogenic polluted urban black waters. The implacable impacts of human activities on environment are causing undeviating ecosystem imbalances and depletion of resources. The formations and recycling of the natural resources is driven through bio-geochemical process which involve vivid biological diversity. Microalgae play vital role to support various ecological functions. Due to their ability to efficiently sequester CO2 and grow rapidly in both fresh and marine waters, the microalgae offer sustainable solutions to mitigate the impacts of anthropogenic activities on the environment. At the cutting edge of environmental crisis are the global water shortages and environment pollution which includes eutrophication due to excessive nutrient discharges and the presence of emerging pollutants. The bioremediation of blooming waste waters by means of exploiting vast diversity of microalgae can play central role in attaining sustainable development of the renewable and non-conventional resources. Microalgae can efficiently capture inorganic nutrients such as N and P, the synthesis of which heavily rely on the consumption of fossil fuels. The world wide vicious circle of fossil fuel consumption, nutrient depletions, and food, feed and water shortages could be freed by utilizing microalgae. The paper addresses the role of microalgae in achieving the sustainable development goals for ecosystem restoration by adopting circular economy approach.

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A simple and rapid algal assay kit to assess toxicity of heavy metal-contaminated water

Cited by 19 publications

References 68 publications

Ecotoxicological evaluation of construction products: inter-laboratory test with DSLT and percolation test eluates in an aquatic biotest battery

Ecotoxicological evaluation of construction products: inter-laboratory test with DSLT and percolation test eluates in an aquatic biotest battery

Current Status and Future Trends in Removal, Control, and Mitigation of Algae Food Safety Risks for Human Consumption

Algae Based Solutions for Polluted Environments to Restore Ecosphere Equilibrium

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