Titre du document / Document title

Characterizing quality of rendered duck fat compared to other fats and oils

Auteur(s) / Author(s)

YUANSHENG GONG ⁽¹⁾ ; WEBER Peter F. ⁽¹⁾ ; RICHARDS Mark P. ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ University of Wisconsin-Madison Department of Animal Sciences Meat Science and Muscle Biology Laboratory 1805 Linden Drive West, Madison, WI 53706, ETATS-UNIS

Résumé / Abstract

The characteristics of rendered duck fat (RDF) were compared to commercial sources of soybean oil, lard, tallow, butter and olive oil. RDF was highly susceptible to lipid oxidation during storage compared to the other fats and oils. However, 0.005% tert-butyl hydroquinone delayed the onset of lipid oxidation to an extent that was comparable to the lag phase observed in the commercial fats and oils. Positive attributes of RDF included a relatively high oleic acid content and low saturated fat content. Undesirable attributes of RDF included a lack of conjugated linoleic acid (CLA) and intermediate levels of trans fatty acids (TFA) compared to the other lipid sources. Decreasing the time and temperature of rendering decreased the TFA content in RDF. Around one-half of the TFA content in RDF was vaccenic acid which is converted to CLA after ingestion.

Revue / Journal Title

Journal of food quality   ISSN 0146-9428   CODEN JFQUD7 

Source / Source

2007, vol. 30, n^o2, pp. 169-186 [18 page(s) (article)] (2 p.1/2)

Langue / Language

Anglais

Editeur / Publisher

Blackwell Publishing, Oxford, ROYAUME-UNI  (1977) (Revue)

Mots-clés anglais / English Keywords

Oils and fats ; Fat ; Quality ;

Mots-clés français / French Keywords

Corps gras ; Matière grasse ; Qualité ;

Mots-clés espagnols / Spanish Keywords

Grasas y aceites ; Materia grasa ; Calidad ;

Localisation / Location

INIST-CNRS, Cote INIST : 17765, 35400014341920.0030