Physical and chemical changes of rapeseed meal proteins during toasting and their effects on in vitro digestibility

Journal of Animal Science and Biotechnology
Sergio Salazar-VillaneaA F van der Poel

Abstract

Toasting during the production of rapeseed meal (RSM) decreases ileal crude protein (CP) and amino acid (AA) digestibility. The mechanisms that determine the decrease in digestibility have not been fully elucidated. A high protein quality, low-denatured, RSM was produced and toasted up to 120 min, with samples taken every 20 min. The aim of this study was to characterize secondary structure and chemical changes of proteins and glucosinolates occurring during toasting of RSM and the effects on its in vitro CP digestibility. The decrease in protein solubility and the increase of intermolecular β-sheets with increasing toasting time were indications of protein aggregation. The contents of NDF and ADIN increased with increasing toasting time. Contents of arginine, lysine and O-methylisourea reactive lysine (OMIU-RL) linearly decreased with increasing toasting time, with a larger decrease of OMIU-RL than lysine. First-order reactions calculated from the measured parameters show that glucosinolates were degraded faster than lysine, OMIU-RL and arginine and that physical changes to proteins seem to occur before chemical changes during toasting. Despite the drastic physical and chemical changes noticed on the proteins, the coefficient ...Continue Reading

References

May 1, 1983·Zeitschrift für Tierphysiologie, Tierernährung und Futtermittelkunde·B Pedersen, B O Eggum
Mar 3, 2005·Journal of Agricultural and Food Chemistry·Francesco Secundo, Nicoletta Guerrieri
Mar 14, 2008·Molecular Nutrition & Food Research·Evelien L van BoxtelHarry Gruppen
Mar 2, 2010·International Journal of Pharmaceutics·Wei WangDirk Teagarden
Jul 12, 2011·Journal of Animal Science·J C González-VegaH H Stein
May 16, 2012·Journal of Agricultural and Food Chemistry·Claire I ButréHarry Gruppen
Oct 31, 2012·The British Journal of Nutrition·Juliet A GerrardNigel G Larsen
Aug 7, 2013·Nutrition Research Reviews·Charlotte van RooijenWouter H Hendriks

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Citations

Apr 11, 2017·Journal of the American Oil Chemists' Society·Sergio Salazar-VillaneaAntonius F B van der Poel
Oct 17, 2017·Animal : an International Journal of Animal Bioscience·S Salazar-VillaneaA F B van der Poel
Dec 24, 2018·Foods·Carolina Cortés-HerreraFabio Granados-Chinchilla
Oct 21, 2017·Journal of Food Science and Technology·Yamira Cepero-BetancourtRoberto Lemus-Mondaca
Sep 11, 2020·Critical Reviews in Food Science and Nutrition·Anna ChmielewskaJustyna Rosicka-Kaczmarek

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Methods Mentioned

BETA
ion exchange chromatography
differential scanning calorimetry
infrared spectroscopy
thermal treatments
chemical modification

Software Mentioned

TA89E
OPUS
SAS

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