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In vivo studies on the long‐term persistence of volatiles in the breath
Author(s) -
Hodgson M.,
Parker A.,
Linforth R. S. T.,
Taylor A. J.
Publication year - 2004
Publication title -
flavour and fragrance journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.393
H-Index - 70
eISSN - 1099-1026
pISSN - 0882-5734
DOI - 10.1002/ffj.1471
Subject(s) - chemistry , persistence (discontinuity) , limiting , respiration , environmental chemistry , botany , mechanical engineering , geotechnical engineering , engineering , biology
The long‐term persistence of ve volatiles in the breath was studied to determine the effects of respiration and the physical properties of each of the volatiles. The long‐term persistence of each of the volatiles in the breath was modelled successfully and used to show that the breath volatile concentration 1 min after consuming the solution was greater when panelists exhaled at a slower rate. The air–water partition coefcient ( K aw ) was inuential in controlling the initial stages of persistence; compounds with a higher K aw were found to decay at a much faster rate than compounds with a low K aw . The decay rate during the later stages was constant for all the volatiles, which indicates that the rate‐limiting factor during the later stages of persistence does not depend on the individual properties of the volatiles. Copyright © 2004 John Wiley & Sons, Ltd.