Nitrogen factor of common carp Cyprinus carpio fillets with and without skin

Alena Honzlova; Helena Curdova; Lenka Schebestova; Pavel Bartak; Alzbeta Stara; Josef Priborsky; Anna Koubova; Zdenka Svobodova; Josef Velisek

doi:10.1038/s41598-021-89491-y

Scientific Reports (May 2021)

Nitrogen factor of common carp Cyprinus carpio fillets with and without skin

Alena Honzlova,
Helena Curdova,
Lenka Schebestova,
Pavel Bartak,
Alzbeta Stara,
Josef Priborsky,
Anna Koubova,
Zdenka Svobodova,
Josef Velisek

Affiliations

Alena Honzlova: State Veterinary Institute Jihlava
Helena Curdova: State Veterinary Institute Jihlava
Lenka Schebestova: State Veterinary Institute Jihlava
Pavel Bartak: State Veterinary Institute Jihlava
Alzbeta Stara: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice
Josef Priborsky: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice
Anna Koubova: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice
Zdenka Svobodova: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice
Josef Velisek: Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, University of South Bohemia in Ceske Budejovice

DOI: https://doi.org/10.1038/s41598-021-89491-y
Journal volume & issue: Vol. 11, no. 1
pp. 1 – 9

Abstract

Read online

Abstract Consumer protection against food adulteration and misleading labelling is integrated into EU legislation, but accurate analysis of the meat content of farmed freshwater fish products is not possible because of the lack of established nitrogen factors for farmed common carp. The aim of this study was to determine nitrogen factors for farmed common carp Cyprinus carpio. Seven-hundred samples collected in 2018–2019 in three harvest seasons (March/April, Jun/July, and October/November) at seven locations in the Czech Republic were analysed for nitrogen, dry matter, protein, ash, and fat content according to standard ISO methods. The recommended nitrogen factor for fat-free common carp fillet with skin is 3.04 ± 0.13 and, for fillet without skin, 2.95 ± 0.12. Availability of nitrogen factors for common carp can help ensure that consumers are purchasing correctly labelled products.

Published in Scientific Reports

ISSN: 2045-2322 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Medicine; Science
Website: https://www.nature.com/srep/

About the journal