Preliminary Assessment of Chemical Elements in Sediments and Larvae of Gomphidae (Odonata) from the Blyde River of the Olifants River System, South Africa

Addo‐Bediako, Abraham; Malakane, Karabo

doi:10.3390/ijerph17218135

Cited by 10 publications

(6 citation statements)

References 31 publications

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“…They discovered that some aquatic insects (Coleoptera: Hydrophilidae) from Turkey's Karasu River had high arsenic levels (0.2 -14.4 mg kg -1 ). Similarly, Addo-Bediako and Malakane [54] reported As levels (range: 7.3 -32.326 mg kg -1 ) in Gomphidae (Odonata) larvae from the Blyde River that were higher than our results. Lead concentrations ranged from 0.142 to 0.172 mg kg -1 , with an average of 0.158 ± 0.015 mg kg -1 .…”

Section: Bioaccumulationcontrasting

confidence: 72%

Nutrient composition and bioaccumulation of an edible aquatic insect,Pantalasp. (Odonata: Libellulidae) from the rice field

Maneechan

Prommi

2021

Preprint

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Numerous edible aquatic insects have unanticipated nutraceutical potential and are consumed in a variety of Thai locations. The proximate composition, amino acid, fatty acid, mineral, and heavy metal content of Pantala sp. (Odonata: Libellulidae) aquatic edible nymphs were determined using standard analytical methods in this study. Pantala sp. had a proximate protein content of 445.14±0.04%, a fat content of 4.93±0.05%, an ash content of 5.24±0.03%, a moisture content of 35.11±0.09%, and a total carbohydrate content of 9.60±0.11%. Total energy was 263.25±0.20 kcal/100 g, with fat energy accounting for 44.37±0.43 kcal/100 g. Inductively Coupled Plasma-Optical Emission Spectroscopy (ICP-OES) analysis revealed that this insect was high in phosphorus, iron, and copper for human consumption. In comparison to other edible insects studied, they were also excellent calcium sources. Agilent 7890B Gas Chromatograph (GC) analysis revealed that it contains 236.67 mg/100g of omega-3 and 523.32 mg/100g of omega-6. While the amino acids examined using High Performance liquid Chromatography contained all essential amino acids. ICP-OES was used to determine the levels of cadmium (Cd), lead (Pb), and arsenic (As). Pantala sp. had the highest concentration of As (average = 2.827 ± 0.289 mg kg -1 ), followed by Cd (0.164 ± 0.007 mg kg -1 ) and Pb (0.158 ± 0.015 mg kg -1 ). Although the insects have nutraceutical potential, they also have toxic heavy metals in trace amounts, with the exception of As. This work could serve as a nutritional reference for local consumers interested in entomophagy.

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Section: Bioaccumulationcontrasting

confidence: 72%

Nutrient composition and bioaccumulation of an edible aquatic insect,Pantalasp. (Odonata: Libellulidae) from the rice field

Maneechan

Prommi

2021

Preprint

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“…The sedentary macroinvertebrate communities, particularly Ephemeroptera, Plecoptera, and Trichoptera (EPT), have been widely used as bioindicators of aquatic pollution, integrating both water and habitat qualities [87,184,191]. Macroinvertebrates have been used to assess heavy metal contamination in Southern African riverine systems [26,92,188,192,193]. In South Africa's Bushveld platinum mining complex, metal accumulation varied in different functional feeding groups of macroinvertebrates.…”

Section: Macroinvertebrate and Fish-based Assessmentmentioning

confidence: 99%

Aquatic Ecological Risk of Heavy-Metal Pollution Associated with Degraded Mining Landscapes of the Southern Africa River Basins: A Review

2022

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Africa accounts for nearly 30% of the discovered world’s mineral reserves, with half of the world’s platinum group metals deposits, 36% of gold, and 20% of cobalt being in Southern Africa (SA). The intensification of heavy-metal production in the SA region has exacerbated negative human and environmental health impacts. In recent years, mining waste generated from industrial and artisanal mining has significantly affected the ecological integrity of SA aquatic ecosystems due to the accelerated introduction and deposition of heavy metals. However, the extent to which heavy-metal pollution associated with mining has impacted the aquatic ecosystems has not been adequately documented, particularly during bioassessments. This review explores the current aquatic ecological impacts on the heavily mined river basins of SA. It also discusses the approaches to assessing the ecological risks, inherent challenges, and potential for developing an integrated ecological risk assessment protocol for aquatic systems in the region. Progress has been made in developing rapid bioassessment schemes (RBS) for SA aquatic ecosystems. Nevertheless, method integration, which also involves heavy-metal pollution monitoring and molecular technology, is necessary to overcome the current challenges of the standardisation of RBS protocols. Citizenry science will also encourage community and stakeholder involvement in sustainable environmental management in SA.

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“…They do not decompose naturally and thus become persistent in water streams and agricultural land. Since their presence is regulated, their detection is mandatory to prevent diseases, protect the environment and strategize viable treatment plans to meet regulation requirements [53].…”

Section: Heavy Metalsmentioning

confidence: 99%

Application of Plasmonic Nanostructures in Molecular Diagnostics and Biosensor Technology: Challenges and Current Developments

Nyembe¹,

Mkhohlakali²,

May³

et al. 2023

Plasmonic Nanostructures - Basic Concepts, Optimization and Applications

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The recent global pandemic caused by Covid-19 enforced the urgent need for accessible, reliable, and accurate point-of-care rapid diagnostics based on plasmonic nanostructures. This is because fast and reliable testing was the key driver in curbing the spread of Covid-19. The traditional methods of diagnostics and biosensors often require expensive infrastructure and highly qualified and trained personnel, which limits their accessibility. These limitations perpetuated the impact of Covid-19 in most countries because of the lack of easily accessible point-of-care rapid diagnostic kits. This review revealed that portable and reliable point-of-care diagnostic kits are very crucial in reaching large populations, especially in underdeveloped and developing countries. This gives perspective to novel point-of-care applications. Furthermore, water quality is a very crucial part of food safety, especially in developing countries faced with water contamination. In this chapter, we explored the various challenges and recent developments in the use of plasmonic nanostructures for application in molecular diagnostics and biosensing for the detection of infectious diseases and common environmental pathogens.

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Preliminary Assessment of Chemical Elements in Sediments and Larvae of Gomphidae (Odonata) from the Blyde River of the Olifants River System, South Africa

Cited by 10 publications

References 31 publications

Nutrient composition and bioaccumulation of an edible aquatic insect,Pantalasp. (Odonata: Libellulidae) from the rice field

Nutrient composition and bioaccumulation of an edible aquatic insect,Pantalasp. (Odonata: Libellulidae) from the rice field

Aquatic Ecological Risk of Heavy-Metal Pollution Associated with Degraded Mining Landscapes of the Southern Africa River Basins: A Review

Application of Plasmonic Nanostructures in Molecular Diagnostics and Biosensor Technology: Challenges and Current Developments

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