Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua )
There is a lack of scientific evidence regarding the stability of iodine and mercury during cooking and processing of seafood. In this study, the iodine and mercury content were determined after thawing frozen fillets of Atlantic cod ( Cadus morhua ), and further in raw compared to boiled, pan-fried...
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ftdoajarticles:oai:doaj.org/article:30ec380fdf784bee93645603bdd9fb96 2023-05-15T15:27:17+02:00 Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) Lisbeth Dahl Arne Duinker Synnøve Næss Maria Wik Markhus Ive Nerhus Lisa Kolden Midtbø Marian Kjellevold 2020-11-01T00:00:00Z https://doi.org/10.3390/foods9111652 https://doaj.org/article/30ec380fdf784bee93645603bdd9fb96 EN eng MDPI AG https://www.mdpi.com/2304-8158/9/11/1652 https://doaj.org/toc/2304-8158 doi:10.3390/foods9111652 2304-8158 https://doaj.org/article/30ec380fdf784bee93645603bdd9fb96 Foods, Vol 9, Iss 1652, p 1652 (2020) fish cooking processing food composition data analysis ICP-MS Chemical technology TP1-1185 article 2020 ftdoajarticles https://doi.org/10.3390/foods9111652 2022-12-31T13:28:01Z There is a lack of scientific evidence regarding the stability of iodine and mercury during cooking and processing of seafood. In this study, the iodine and mercury content were determined after thawing frozen fillets of Atlantic cod ( Cadus morhua ), and further in raw compared to boiled, pan-fried, and oven baked fillets. Iodine was determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and mercury by atomic absorption spectrophotometry with Direct Mercury Analyzer (DMA-80). Thawing of the cod resulted on average in a 12% loss of iodine to the thawing water. Boiling significantly decreased the total content of iodine per slice of cod fillet corresponding to the concentration of iodine found in the boiling water. Pan-frying and oven-baking did not cause any significant changes of the total iodine content per slice of cod fillet, although iodine content per 100 g increased due to weight reduction of the cod slices from evaporation of water during preparation. For mercury, we found minimal changes of the different cooking methods. In summary, the findings in our study show that boiling had the greatest effect on the iodine content in the cod fillets. Type of cooking method should be specified in food composition databases as this in turn may influence estimation of iodine intake. Article in Journal/Newspaper atlantic cod Gadus morhua Directory of Open Access Journals: DOAJ Articles Foods 9 11 1652 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
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English |
topic |
fish cooking processing food composition data analysis ICP-MS Chemical technology TP1-1185 |
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fish cooking processing food composition data analysis ICP-MS Chemical technology TP1-1185 Lisbeth Dahl Arne Duinker Synnøve Næss Maria Wik Markhus Ive Nerhus Lisa Kolden Midtbø Marian Kjellevold Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) |
topic_facet |
fish cooking processing food composition data analysis ICP-MS Chemical technology TP1-1185 |
description |
There is a lack of scientific evidence regarding the stability of iodine and mercury during cooking and processing of seafood. In this study, the iodine and mercury content were determined after thawing frozen fillets of Atlantic cod ( Cadus morhua ), and further in raw compared to boiled, pan-fried, and oven baked fillets. Iodine was determined by Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) and mercury by atomic absorption spectrophotometry with Direct Mercury Analyzer (DMA-80). Thawing of the cod resulted on average in a 12% loss of iodine to the thawing water. Boiling significantly decreased the total content of iodine per slice of cod fillet corresponding to the concentration of iodine found in the boiling water. Pan-frying and oven-baking did not cause any significant changes of the total iodine content per slice of cod fillet, although iodine content per 100 g increased due to weight reduction of the cod slices from evaporation of water during preparation. For mercury, we found minimal changes of the different cooking methods. In summary, the findings in our study show that boiling had the greatest effect on the iodine content in the cod fillets. Type of cooking method should be specified in food composition databases as this in turn may influence estimation of iodine intake. |
format |
Article in Journal/Newspaper |
author |
Lisbeth Dahl Arne Duinker Synnøve Næss Maria Wik Markhus Ive Nerhus Lisa Kolden Midtbø Marian Kjellevold |
author_facet |
Lisbeth Dahl Arne Duinker Synnøve Næss Maria Wik Markhus Ive Nerhus Lisa Kolden Midtbø Marian Kjellevold |
author_sort |
Lisbeth Dahl |
title |
Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) |
title_short |
Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) |
title_full |
Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) |
title_fullStr |
Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) |
title_full_unstemmed |
Iodine and Mercury Content in Raw, Boiled, Pan-Fried, and Oven-Baked Atlantic Cod ( Gadus morhua ) |
title_sort |
iodine and mercury content in raw, boiled, pan-fried, and oven-baked atlantic cod ( gadus morhua ) |
publisher |
MDPI AG |
publishDate |
2020 |
url |
https://doi.org/10.3390/foods9111652 https://doaj.org/article/30ec380fdf784bee93645603bdd9fb96 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Foods, Vol 9, Iss 1652, p 1652 (2020) |
op_relation |
https://www.mdpi.com/2304-8158/9/11/1652 https://doaj.org/toc/2304-8158 doi:10.3390/foods9111652 2304-8158 https://doaj.org/article/30ec380fdf784bee93645603bdd9fb96 |
op_doi |
https://doi.org/10.3390/foods9111652 |
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Foods |
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