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Determination of Odor Difference Thresholds
Author(s) -
STONE H.,
OUGH C. S.,
PANGBORN R. M.
Publication year - 1962
Publication title -
journal of food science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.772
H-Index - 150
eISSN - 1750-3841
pISSN - 0022-1147
DOI - 10.1111/j.1365-2621.1962.tb00081.x
Subject(s) - olfactometer , odor , significant difference , fraction (chemistry) , mathematics , mean difference , chemistry , chromatography , statistics , biology , organic chemistry , confidence interval , ecology , host (biology)
SUMMARY An olfactometer described previously was modified and used to determine odor‐difference thresholds for 48 subjects at 4 levels of 2‐heptanone. The apparatus was found to give rapid and reproducible threshold measurements. Difference thresholds were found to follow the Weber law. A Weber fraction of 0.23 mg/min/deviate was determined for 2‐heptanone. The absolute threshold was found to be 8.97 × 10 −4 mg of 2‐heptanone/L air.