Effect of cooking temperatures on chemical changes in species of organic arsenic in seafood
The concentrations of arsenobetaine (AB), tetramethylarsonium ion (TMA+), and trimethylarsine oxide (TMAO) were determined in samples of sole, dory, hake, and sardine, raw and after being subjected to cooking processes - baking, frying, and grilling - at various temperatures. In all cases, the temperature attained inside the product during the cooking process was measured. The arsenic species extracted from the samples with methanol/water were separated by means of a column switching technique between a PRP-X100 column and a PRP-X200 column. AB was detected by hydride generation atomic absorption spectrometry, whereas TMA+ and TMAO were detected by hydride generation atomic fluorescence spectrometry. The results obtained showed that, in all of the types of seafood studied, TMA+ appeared after cooking, possibly because heating facilitates decarboxylation of AB to TMA+.
| Main Authors: | , , , , , |
|---|---|
| Format: | artículo biblioteca |
| Published: |
American Chemical Society
2001-04-12
|
| Subjects: | Arsenic, Organoarsenical species, Seafood, Cooking, Chemical changes, |
| Online Access: | http://hdl.handle.net/10261/331177 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | The concentrations of arsenobetaine (AB), tetramethylarsonium ion (TMA+), and trimethylarsine oxide (TMAO) were determined in samples of sole, dory, hake, and sardine, raw and after being subjected to cooking processes - baking, frying, and grilling - at various temperatures. In all cases, the temperature attained inside the product during the cooking process was measured. The arsenic species extracted from the samples with methanol/water were separated by means of a column switching technique between a PRP-X100 column and a PRP-X200 column. AB was detected by hydride generation atomic absorption spectrometry, whereas TMA+ and TMAO were detected by hydride generation atomic fluorescence spectrometry. The results obtained showed that, in all of the types of seafood studied, TMA+ appeared after cooking, possibly because heating facilitates decarboxylation of AB to TMA+. |
|---|