Ursolic Acid Inhibited Cholesterol Esterase and Pancreatic Lipase Activities and Decreased Micellar Cholesterol Solubility In Vitro

Figure 4

Synchronous and EEM fluorescence spectra of UA on CEase and PL. The variation of tyrosine (Tyr, Δλ = 15 nm) fluorescence intensity of CEase (a) and PL (c). The variation of tryptophan (Trp, Δλ = 60 nm) fluorescence intensity of CEase (b) and PL (d). The EEM fluorescence of free CEase (e), CEase-UA (f), PL (g), and PL-UA (h) along with the contour plots (on top).

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