In:
Acta Ichthyologica et Piscatoria, Pensoft Publishers, Vol. 51, No. 2 ( 2021-06-08), p. 119-129
Abstract:
Measures for consumer protection against food adulteration and misleading labeling are integrated into EU legislation, including methods for detection of misleading practices. Verification of meat content is available for marine products but not for freshwater fish because of the lack of standard nitrogen factors. The aim of this study was to establish nitrogen factors for European pike-perch Sander lucioperca (Linnaeus, 1758), northern pike Esox lucius Linnaeus, 1758, and sheatfish Silurus glanis Linnaeus, 1758. The study involved analysis of 808 fillet samples obtained in spring (March–April) and autumn (October–November) harvest seasons, 2018–2019, from seven Czech Republic fish rearing facilities. Samples with and without skin were analyzed for nitrogen content, dry matter, protein, ash, and fat according to established ISO methods. The recommended nitrogen factor for European pike-perch with the skin is 3.28 ± 0.09 and without the skin is 3.21 ± 0.09; for northern pike with the skin is 3.18 ± 0.09 and without skin is 3.15 ± 0.09; and for sheatfish with skin is 2.73 ± 0.13 and without skin is 2.75 ± 0.12. The established nitrogen factors will enable analysis of meat content to ensure that consumers are purchasing correctly described and labeled fish products.
Type of Medium:
Online Resource
ISSN:
1734-1515
,
0137-1592
DOI:
10.3897/aiep.51.63281
DOI:
10.3897/aiep.51.63281.figure1
DOI:
10.3897/aiep.51.63281.figure2
DOI:
10.3897/aiep.51.63281.figure3
DOI:
10.3897/aiep.51.63281.figure4
Language:
Unknown
Publisher:
Pensoft Publishers
Publication Date:
2021
detail.hit.zdb_id:
441372-6
detail.hit.zdb_id:
2177242-3
SSG:
21,3
SSG:
12
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