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Canned Fish in Brine-Variability in Macronutrient and Fatty Acid Composition
Diana Chrpová1, Vojtech Ilko2, Markéta Růžičková3
1Department of Microbiology, Nutrition and Dietetics, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic.
Biology
|March 13, 2026
Summary
Canned marine fish offer high protein and beneficial omega-3 fatty acids like EPA and DHA. Processing methods preserve nutrient content, making canned fish a healthy dietary option.
Area of Science:
- Marine Biology
- Nutritional Science
- Food Chemistry
Background:
- Marine fish are a vital source of essential nutrients.
- Canned fish is widely consumed, but its nutritional profile requires detailed analysis.
- Understanding the impact of processing on fish nutrient content is crucial for consumers.
Purpose of the Study:
- To analyze the protein, fat, and fatty acid profiles of various canned marine fish.
- To compare the nutritional composition of canned fish with fresh fish.
- To assess the impact of canning on the quality of highly unsaturated fatty acids (HUFAs).
Main Methods:
- Chemical analysis of protein content.
- Determination of fat content.
- Gas chromatography to analyze fatty acid composition, focusing on omega-3s (EPA and DHA).
Main Results:
- Canned fish muscle generally contains 15-21 g/100 g protein.
- Fat content varied significantly (0.X-15 g/100 g).
- Polyunsaturated fatty acids (PUFAs) predominated; canned fish fatty acid profiles closely resembled fresh fish, with minimal oxidative damage.
Conclusions:
- Canning is an effective preservation method that retains the nutritional value of marine fish, particularly PUFAs.
- Mackerel, sardines, and salmon are excellent sources of EPA and DHA, crucial omega-3 fatty acids.
- Small, regular servings of these fish can meet recommended daily intakes of EPA and DHA.
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