37 research outputs found
Lipid and fatty acid composition of Longissimus thoracis and Semitendinosus muscles in finishing Normand cows given unsaturated lipids and antioxidants
International audienc
La supplémentation en lipides insaturés et en antioxydants de la ration d’engraissement améliore le profil lipidique de la viande de vaches de réforme
Vigie Viande - Réseau d'Information Scientifique et Technique de la Filière Viand
Lipids and fatty acid composition of Longissimus thoracis and Semitendinosus muscles in finishing Normand cows
International audienc
Compared hepatic metabolism of linoleic and linolenic acids of finishing bovines given a n-3 PUFA-rich diet
National audienc
Meat protein aggregation: First investigations on the role of the lipid oxidation product, 4-hydroxy-2-nonenal
International audienceThis paper describes for the first time how 4-hydroxy-2-nonenal (HNE) promotes protein aggregation in meat products. A whole meat extract was incubated with increasing concentrations of HNE during 30min, 1h and 2h at 25°C. In the studied conditions, HNE-protein adducts were detected. In presence of HNE, protein solubility decreased that stressed a possible involvement of HNE in the aggregation process. Different analytical methods were investigated to detect aggregates formation. The aggregation phenomenon remained low. Employed methods give us information on the implicated bonds. Electrophoresis with or without using a reducing agent coupled with western-blotting analyses revealed that HNE attacks preferentially the cysteine residues (by thiols function) and then lysine and histidine
Meat protein aggregation: First investigations on the role of the lipid oxidation product, 4-hydroxy-2-nonenal
International audienceThis paper describes for the first time how 4-hydroxy-2-nonenal (HNE) promotes protein aggregation in meat products. A whole meat extract was incubated with increasing concentrations of HNE during 30min, 1h and 2h at 25°C. In the studied conditions, HNE-protein adducts were detected. In presence of HNE, protein solubility decreased that stressed a possible involvement of HNE in the aggregation process. Different analytical methods were investigated to detect aggregates formation. The aggregation phenomenon remained low. Employed methods give us information on the implicated bonds. Electrophoresis with or without using a reducing agent coupled with western-blotting analyses revealed that HNE attacks preferentially the cysteine residues (by thiols function) and then lysine and histidine
Vitamin E and plant extracts rich in antioxidants given to bovine efficiently protect beef against lipoperoxidation during processing
International audienc
Lipoperoxidation in cattle: consequences on animal health and meat nutritional quality
International audienc
Intérêts des antioxydants dans la prévention des virements de couleur liés aux phénomènes d'oxydation dans la viande bovine
National audienc
Matrix impact on the bioaccessibility of plant polyphenols in the gastric tract
The consumption of fruit and vegetables (F&V) is inversely associated to the development of cardiovascular
diseases, several kinds of cancers and other chronic diseases. Moreover, the cardiovascular protection could be ascribed to flavonoids, a class of polyphenols largely distributed in F&V. Polyphenols are poorly absorbed
from the gastrointestinal tract (GIT) and undergo extensive metabolization by colon microflora before reaching
plasma. Thus, before their absorption, polyphenols could exert a health benefit directly in the GIT. As a matter of fact, they were shown to protect polyunsaturated lipids from oxidation during gastric digestion. The
bioaccessibility of polyphenols, defined as their release from the food matrix and solubilization into the bolus, is a prerequisite step