“…Metabolomics, the study of small molecules, metabolites, in a biological system, has been widely used in many research fields related to human health (Gao et al, 2017). Metabolomics provides a powerful platform to simultaneously monitor endogenous metabolite levels in biological samples, including plasma, tissue, and urine, and to combine multivariate statistical analysis to reveal potential biomarkers and identify associated metabolic pathways (Jiang, Song, et al, 2017; Liang et al, 2016; Zira et al, 2013). In general, analytical methods such as NMR and MS have been proved effective and used more frequently recently (Huang et al, 2008).…”