Does drying preserve the nutritional quality of small freshwater fish without excessive concentrations of heavy metals ?

Sroy Sengly, Avallone Sylvie, Servent Adrien, In Sokneang, Arnaud Elodie. 2023. Does drying preserve the nutritional quality of small freshwater fish without excessive concentrations of heavy metals ?. Current Research in Food Science, 6:100489, 10 p.

Résumé : The potential of drying to preserve the nutritional quality of a small freshwater fish Henicorhynchus siamensis was assessed. Drying time to reach moisture content and water activity of 10 g/100g and 0.65 ranged from 55 h at 50 °C to 20 h at 80 °C, respectively. Dried fish powder is rich in macronutrients (protein, lipid and ash) and essential minerals (calcium, phosphorus, iron and zinc) due to water removal and despite lipid loss. It is still rich in polyunsaturated fatty acids although docosahexaenoic acid was reduced except at 60°C. Vitamin A was rapidly degraded and manganese was concentrated at high level. However, mean score for the nutritional adequacy of the 15 nutrients (SAIN) and score of nutrients to limit (LIM) show that the fish powder can be used as a food ingredient for example in the formulation of fish snack or instant soup. With the abundance of Henicorhynchus siamensis, dried fish powder from this species could contribute to food security in Cambodia, especially vulnerable people in rural areas.

Mots-clés Agrovoc : métal lourd, poisson d'eau douce, poisson séché, protéine microbienne, acide gras, valeur nutritive, poisson (aliment), teneur en éléments minéraux, composition chimique, séchage, aliment instantané, teneur en vitamines, rétinol, acide docosahexaénoïque

Mots-clés géographiques Agrovoc : Cambodge

Mots-clés libres : Tonle Sap Lake, Nutritional profiling, Micronutrients

Classification Agris : Q02 - Traitement et conservation des produits alimentaires
Q04 - Composition des produits alimentaires
Q03 - Contamination et toxicologie alimentaires

Champ stratégique Cirad : CTS 3 (2019-) - Systèmes alimentaires

Auteurs et affiliations

• Sroy Sengly, Institut de technologie du Cambodge (KHM)
• Avallone Sylvie, Montpellier SupAgro (FRA)
• Servent Adrien, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-9670-6707
• In Sokneang, Institut de technologie du Cambodge (KHM)
• Arnaud Elodie, CIRAD-PERSYST-UMR Qualisud (FRA) ORCID: 0000-0002-0896-7916 - auteur correspondant

Source : Cirad-Agritrop (https://agritrop.cirad.fr/604358/)

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