Fig. 2
From: A GC–MS based metabolic profiling of fermented tomato by lactic acid bacteria
PCA score plot (a) derived from GC–MS data of tomato samples fermented with different LAB strains, showing different metabolic profiles after 3 days of fermentation. QC (quality control) samples had good clustering in the center of PCA score plot, ensuring reliability of the metabolomics analysis. The score plot of panel (b) was generated after excluding samples before fermentation and QC samples in order to clarify metabolite similarity between LAB strains. Each symbol in the score plot represents a tomato sample fermented in a different batch. BF before fermentation, LP Lactobacillus plantarum, LM Leuconostoc mesenteroid, LF Lactobacillus fermentum, BL Bifidobacterium longum, PP Pediococcus pentosaceus, LB Lactobacillus brevis