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. 2013 Apr 29;8(4):e62409. doi: 10.1371/journal.pone.0062409

Figure 1. Fecal metabolic activities for p-nitrophenyl-β-D-glucopyranoside, p-nitrophenyl-β-D-glucuronide, p-nitrophenyl-β-D-galactopyranoside, p-nitrophenyl-α-L-rhamnopyranoside and ginsenoside Rb1 in 10 Koreans.

Figure 1

(A) Hydrolytic activity of p-nitrophenyl-β-D-glucopyranoside (PNG). (B) Hydrolytic activitiy of ginsenoside Rb1 to compound K. The relationships between PNG hyfrolyzing and ginsenoside Rb1 degrading activities (C), between PNG hydrolyzing and compound K forming activities (D), β-D-glucuronide hydrolyzing and compound K forming activities (E), β-D-galactopyranoside hydrolyzing and compound K forming activities (F), α-L-rhamnopyranoside hydrolyzing and compound K forming activities (G), and between ginsenoside Rb1 degrading and compound K forming activities (H). We selected 5 samples with FPG (fecal activity potently metabolizing ginsenoside Rb1 to compound K) and 5 samples with FNG (fecal activity non-metabolizing ginsenoside Rb1 to compound K) from a pool of 100 subjects investigated in a previous study [22]. FPG is black bars (in A and B) and closed circles (in C, D and E). FNG is white bars (in A and B) and open circles (in C, D and E). Grayish bars (in A and B) are average values of 10 samples. All values indicate mean ± SD. **p<0.01.