Abstract
Coconut milk has high nutritive value. In this study, we attempted to assess the gastrointestinal digestion of coconut milk proteins in vitro. Cow's milk and coconut milk proteins were subjected to two successive hydrolyses with pepsin then with a mixture of trypsin/chymotrypsin. The kinetics of degradation were determined and SDSPAGE was carried out to evaluate specific protein composition before and after α-NH2 free-function analysis. Determination of α-NH2 free functions showed coconut milk proteins to be more susceptible to both pepsin digestion (***p<0.001, **p<0.01) and combined trypsin/chymotrypsin digestion (***p<0.05) in relation to bovine proteins. The electrophoretic profile of native coconut milk proteins revealed the presence of β-Lg and the absence of specific proteins; in addition, no coconut milk proteins were seen in the electrophoretic gels.
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