Chemical and biochemical composition of caviar from different sturgeon species and origins
Identifieur interne : 000419 ( Main/Exploration ); précédent : 000418; suivant : 000420Chemical and biochemical composition of caviar from different sturgeon species and origins
Auteurs : M. Wirth [Allemagne, Roumanie, France] ; F. Kirschbaum [Allemagne] ; J. Gessner [Allemagne] ; A. Krüger [Allemagne] ; N. Patriche [Roumanie] ; R. Billard [France]Source :
- Food / Nahrung [ 0027-769X ] ; 2000-07-01.
Abstract
The chemical and biochemical composition of caviar in 22 specimens of wild caught and of 2 farmed animals were measured. The results include grain size, protein and fat content, fatty acid composition of triglycerides and phospholipids, as well as the concentrations of relevant heavy metals and chlorinated hydrocarbons. The average protein content varied between 26.2 and 31.1% (wet weight) and fat from 10.9 to 19.4% (wet weight) with lowest values for caviar from farmed sturgeon. The triglycerides and phospholipids contained more n‐3 fatty acids, especially eicosapentaenoic and docosahexaenoic acid than n‐6 fatty acids. The copper and zinc concentrations varied between 1.20 and 1.69 and 10.3 and 12.4 mg/kg (wet weight( respectively. These values reflect the elevated requirement of sturgeons for these components. Lead content varied between 0.06 and 0.15 mg/kg (wet weight). The cadmium concentrations were less than 5 μg/kg (wet weight) leading to the conclusion that no accumulation took place in the eggs. The concentrations of Σ DDT and Σ PCB were extremely high in caviar fromHuso husocompared to the samples of the other species thus reflecting the different food habits leading to increased bio‐accumulation.
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DOI: 10.1002/1521-3803(20000701)44:4<233::AID-FOOD233>3.0.CO;2-1
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The results include grain size, protein and fat content, fatty acid composition of triglycerides and phospholipids, as well as the concentrations of relevant heavy metals and chlorinated hydrocarbons. The average protein content varied between 26.2 and 31.1% (wet weight) and fat from 10.9 to 19.4% (wet weight) with lowest values for caviar from farmed sturgeon. The triglycerides and phospholipids contained more n‐3 fatty acids, especially eicosapentaenoic and docosahexaenoic acid than n‐6 fatty acids. The copper and zinc concentrations varied between 1.20 and 1.69 and 10.3 and 12.4 mg/kg (wet weight( respectively. These values reflect the elevated requirement of sturgeons for these components. Lead content varied between 0.06 and 0.15 mg/kg (wet weight). The cadmium concentrations were less than 5 μg/kg (wet weight) leading to the conclusion that no accumulation took place in the eggs. The concentrations of Σ DDT and Σ PCB were extremely high in caviar fromHuso husocompared to the samples of the other species thus reflecting the different food habits leading to increased bio‐accumulation.</div></front></TEI><affiliations><list><country><li>Allemagne</li><li>France</li><li>Roumanie</li></country><region><li>Berlin</li><li>Île-de-France</li></region><settlement><li>Berlin</li><li>Paris</li></settlement></list><tree><country name="Allemagne"><region name="Berlin"><name sortKey="Wirth, M" sort="Wirth, M" uniqKey="Wirth M" first="M." last="Wirth">M. Wirth</name></region><name sortKey="Gessner, J" sort="Gessner, J" uniqKey="Gessner J" first="J." last="Gessner">J. Gessner</name><name sortKey="Kirschbaum, F" sort="Kirschbaum, F" uniqKey="Kirschbaum F" first="F." last="Kirschbaum">F. Kirschbaum</name><name sortKey="Kr Ger, A" sort="Kr Ger, A" uniqKey="Kr Ger A" first="A." last="Krüger">A. 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