Die effek van heksavalente chroom by 'n variërende water-pH op die koolhidraatmetabolisme van Tilapia sparrmanii (Cichlidae)
Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie/South African Journal of Science and Technology
| Field | Value | |
| Title | Die effek van heksavalente chroom by 'n variërende water-pH op die koolhidraatmetabolisme van Tilapia sparrmanii (Cichlidae) The effect of hexavalent chromium at different pH values on the carbohydrate metabolism of Tilapia sparrmanii (Cichlidae) | |
| Creator | Wepener, V. van Vuuren, J. H. J. du Preez, H. H. | |
| Description | 'n Ondersoek is geloods om die invloed van subletale konsentrasies van heksavalente chroom Cr(V1) by verskillende pH's op die koolhidraatmetabolisme van varswatervis te bepaal. Die toetsorganisme, Tilapia sparrmanii, is vir korttermyn - sowel as langtermyntydperke aan Cr(V1) blootgestel, waarna die bloedglukosevlakke en die aktiwiteite van piruvaatkinase, isositraatdehidrogenase en glukose-6-fosfaatdehidrogenase bepaal is. Daar is gevind dat blootstellings by 'n lae pH tot 'n toename in energieproduksie lei. Langtermynblootstelling veroorsaak dat die koolhidraatreserwes uitgeput word en dat daar 'n toename in pentosefosfaatweg-aktiwiteit voorkom. The effect of hexavalent chromium at different pH values on the carbohydrate metabolism of Tilapia sparrmanii was investigated. The indicator organisms were exposed to Cr(V1) for short and long-term exposures, after which the blood glucose levels and activities of pyruvate kinase, isocitrate dehydrogenase and glucose-6-phosphate dehydrogenase were determined. It was found that short-term exposures of Cr(V1) at an acidic medium caused an increase in energy production and glucose concentrations. Long term exposures led to exhaustion of carbohydrate reserves, which necessitated the formation of additional energy compounds. | |
| Publisher | AOSIS | |
| Date | 1992-07-09 | |
| Identifier | 10.4102/satnt.v11i3.539 | |
| Source | Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 11, No 3 (1992); 102-104 Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie; Vol 11, No 3 (1992); 102-104 2222-4173 0254-3486 | |
| Language | eng | |
| Relation |
The following web links (URLs) may trigger a file download or direct you to an alternative webpage to gain access to a publication file format of the published article:
https://journals.satnt.aosis.co.za/index.php/satnt/article/view/539/959
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