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Kadmiumhalter i svensk tång

Laike Ståhle, Jonathan LU and Jonsson, Emil LU (2022) YTHL05 20221
Livsmedelsteknik (kandidat)
Food Science
Abstract
Seaweed along the Swedish coast contains both proteins, fats, vitamins and minerals, and could be part of the food supply of the future. It could also be described as climate smart as seaweed does not need to be watered, fertilized, or take up land for cultivation. One of the problems with the intention of consuming the seaweed is its potentially high content of heavy metals.
This work has focused on investigating the levels of the heavy metal cadmium in Swedish seaweed and whether preparation of boiling the seaweed can affect the levels. This was done to assess the suitability of seaweed for human consumption. The species analysed were saw kelp, sugar kelp and grass kelp, all harvested on the west coast of Sweden.
In the analyses that... (More)
Seaweed along the Swedish coast contains both proteins, fats, vitamins and minerals, and could be part of the food supply of the future. It could also be described as climate smart as seaweed does not need to be watered, fertilized, or take up land for cultivation. One of the problems with the intention of consuming the seaweed is its potentially high content of heavy metals.
This work has focused on investigating the levels of the heavy metal cadmium in Swedish seaweed and whether preparation of boiling the seaweed can affect the levels. This was done to assess the suitability of seaweed for human consumption. The species analysed were saw kelp, sugar kelp and grass kelp, all harvested on the west coast of Sweden.
In the analyses that were performed with both atomic absorption spectroscopy (AAS) and inductively coupled plasma optical emission spectrometry (ICP-OES), the results showed that the content of cadmium varied between the species and that cooking seaweed by boiling in different variations had no significant effect on the cadmium content.
It is concluded that the three species of seaweed analysed have an average cadmium content of 0,4 mg cadmium per kg dry weight. There is also a large difference between the species, with grass kelp showing the lowest content and saw kelp showing the highest. For the two species, sugar kelp and saw kelp, the levels are close or above the only known limit value currently in place in the EU, i.e., in the national legislation of France. (Less)
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author
Laike Ståhle, Jonathan LU and Jonsson, Emil LU
supervisor
organization
alternative title
Cadmium content in swedish seaweed
course
YTHL05 20221
year
type
M2 - Bachelor Degree
subject
keywords
Cadmium, Sea weed, Sacchariana latissima, Ulva intestinalis, Fusus serratur, Boiling, AAS, ICP-OES, Food Technology
language
Swedish
id
9084971
date added to LUP
2022-06-08 11:31:31
date last changed
2022-06-08 11:31:31
@misc{9084971,
  abstract     = {{Seaweed along the Swedish coast contains both proteins, fats, vitamins and minerals, and could be part of the food supply of the future. It could also be described as climate smart as seaweed does not need to be watered, fertilized, or take up land for cultivation. One of the problems with the intention of consuming the seaweed is its potentially high content of heavy metals.
This work has focused on investigating the levels of the heavy metal cadmium in Swedish seaweed and whether preparation of boiling the seaweed can affect the levels. This was done to assess the suitability of seaweed for human consumption. The species analysed were saw kelp, sugar kelp and grass kelp, all harvested on the west coast of Sweden.
In the analyses that were performed with both atomic absorption spectroscopy (AAS) and inductively coupled plasma optical emission spectrometry (ICP-OES), the results showed that the content of cadmium varied between the species and that cooking seaweed by boiling in different variations had no significant effect on the cadmium content.
It is concluded that the three species of seaweed analysed have an average cadmium content of 0,4 mg cadmium per kg dry weight. There is also a large difference between the species, with grass kelp showing the lowest content and saw kelp showing the highest. For the two species, sugar kelp and saw kelp, the levels are close or above the only known limit value currently in place in the EU, i.e., in the national legislation of France.}},
  author       = {{Laike Ståhle, Jonathan and Jonsson, Emil}},
  language     = {{swe}},
  note         = {{Student Paper}},
  title        = {{Kadmiumhalter i svensk tång}},
  year         = {{2022}},
}