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. Author manuscript; available in PMC: 2016 Feb 3.
Published in final edited form as: Toxicol Appl Pharmacol. 2015 Oct 21;289(3):542–549. doi: 10.1016/j.taap.2015.10.004

Fig. 10.

Fig. 10

Identification of metabolites of diacetyl (acetoin; A) and 2,3-pentanedione (2-hydroxy-3-pentanone; B) in basolateral chamber samples following exposure of NHBEs to 25 ppm diacetyl or 2,3-pentanedione. The arrows point to the peaks identified as acetoin (A) or 2-hydroxy-3-pentanone (B). The diacetyl and 2,3-pentanedione peaks are not shown. The identity of the other peaks is not known; they could be impurities or other metabolites of the flavorings.