Comprehensive profiling and authentication of porcine, bovine, and goat bone gelatins through UHPLC-HRMS metabolomics and chemometric strategies

Gelatin is a derivative that can be obtained from the bones of animals such as bovine, goat, and porcine. Ensuring the halal status of gelatin is crucial due to the combination of gelatin derived from bovines and goats mixed with porcine gelatin in order to enhance the stability of its physico-chemical properties for application in food and cosmetic applications. This study aims to authenticate the halal status of gelatin by utilizing the metabolomics analysis approach using UHPLC-HRMS in combination with chemometrics. The study's findings showed that PCA analysis clearly distinguished the metabolite profiles of bone gelatins obtained from porcine, bovine, and goat sources. Cluster analysis identified distinct metabolic characteristics in bone gelatins derived from bovine, goat, and porcine. Fifteen potential metabolites were identified by PLS-DA for the halal authentication of gelatin. These metabolites include terephthalic acid, 5,5'-(6Z)-6-Tetradecene-1,14-diylbis (1,3-benzenediol), 1,2-Cyclohexane dicarboxylic acid diisononyl ester, 5-Hydroxymethyl-2-furaldehyde, D-(+)-Pyroglutamic acid, 4-Hydroxybenzaldehyde, Dodecyl sulfate, Bis(2-ethylhexyl)phthalate, Nicotinamide, dl-Malic acid, NP-011548, 4-Nitrocatechol, 1-Linoleoyl glycerol, Olomoucine, and Myristyl sulfate. The study findings indicated that bone gelatins derived from bovine, goat, and porcine sources exhibit distinct profiles of metabolites. Metabolomics, when paired with chemometrics, is a discriminative approach for determining the halal status of gelatin.