Fig. 3: Metabolomics statistical analyses of tilapia skin and soup in the boiling process.

A PCA score scatter plot of tilapia skin. B PCA score scatter plot of tilapia skin soup. C, D Score scatter plot (C) and permutation test (D) of OPLS-DA model for the tilapia skins at 0 and 10 min. E, F Score scatter plot (C) and permutation test (D) of OPLS-DA model for the tilapia skins at 10 and 30 min. G, H Score scatter plot (G) and permutation test (H) of OPLS-DA model for the tilapia skins at 30 and 60 min. I, J Score scatter plot (I) and permutation test (J) of OPLS-DA model for the tilapia skin soups at 10 and 30 min. K, L Score scatter plot (K) and permutation test (L) of OPLS-DA model for the tilapia skin soups at 30 and 60 min.