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. 2017 Dec;55(4):519–530. doi: 10.17113/ftb.55.04.17.5138

Table 1. Pancreatic lipase apparent catalytic parameters (vmax, Km, Ki and Ki´) and IC50 of the hydrolysis of pNPL in the presence of different polyphenolic compounds, capsaicin and orlistat.

Compound c/µM vmax/(µM/s) Km/µM Ki/µM Ki´/µM IC50/µM
pNPL (control) 11.7-124.2 (0.11±0.03)a (1.96±0.20)ab n.d. n.d. n.d.
Caffeic acid 300.21 (0.10±0.02)a (0.30±0.06)d (370.2±18.4)a (388.2±30.2)a (401.5±32.1)a
p-Coumaric acid 275.00 (0.10±0.01)a (0.95±0.10)c (205.7±44.1)b (290.7±39.7)b (170.2±20.6)b
Quercetin 14.53 (0.10±0.02)a (2.15±0.40)a (12.0±4.4)d (17.9±6.9)d (6.1±2.4)c
Capsaicin 40.47 (0.10±0.02)a (1.80±0.19)b (66.0±14.3)c (50.7±13.0)c n.d.
Orlistat 9.68 (0.09±0.03)a (0.30±0.05)d (16.9±4.8)d (19.0±2.8)d (4.0±1.0)c

The data are presented as mean value±standard deviation of triplicate analyses. Different letters in the same row indicate statistically significant values (Fisher’s least significant difference analysis, p≤0.05) with respect to control, or between treatments for dissociation constant of free enzyme and enzyme-substrate complex (Ki and Ki´). Km=Michaelis-Menten constant, n.d.=not determined