Table 1. Metabolites found to be responsible for the differentiation of beef samples in multivariate approaches. VIP scores and p-value of each metabolite, sorted in descending VIP score order, are presented

Significant metabolites	VIP score	p-value
N,N-Dimethylglycine	1.40756	<0.0001
Creatine	1.38294	<0.0001
Lactate	1.35695	<0.0001
Carnosine	1.33872	<0.0001
Carnitine	1.30707	0.0001
sn-Glycero-3-phosphocholine	1.26638	0.0002
Betaine	1.22746	0.0060
Glycine	1.13837	0.0013
Glucose	1.13473	0.0012
Alanine	1.06467	0.0036
Tryptophan	1.05851	0.0039
Methionine	1.04778	0.0035
Taurine	1.03358	0.0041
Tyrosine	1.00064	0.0158

VIP, variable importance in projection.