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. 2023 Dec 2;24(23):17057. doi: 10.3390/ijms242317057

Figure 4.

Figure 4

Metabolomic analysis of liver antioxidant-related metabolites in the L6 condition: (A) principal component analysis (PCA), (B) sparse partial least squares discriminant analysis (sPLS-DA), and (C) heatmap analysis of antioxidant-related detected metabolites in the liver metabolomics of rats transferred to the L6 photoperiod. STD, rats fed a standard diet; CAF, rats fed a cafeteria diet; VH, rats administered vehicle; GSPE, indicates rats were administered with grape seed proanthocyanidin extract at 25 mg/kg b.w.; L6, indicates short photoperiod with 6 h light per day.