By Richard A. Scanlan
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Extra info for Flavor Quality: Objective Measurement
Eight i n d i v i d u a l s p a r t i c i p a t e d i n the study. They evaluated every one of the 24 odors i n random o r d e r , a s s i g n i n g magnitude estimates to odor i n t e n s i t y , odor p l e a s a n t n e s s , and odor q u a l i t i e s . Table 1 shows the odor q u a l i t i e s evaluated i n each experiment. When p o s s i b l e , a d e s c r i p t i o n of the odor q u a l i t y was provided i n depth to assure the p a n e l i s t s of the meaning of t h a t q u a l i t y . The p a n e l i s t s r e p l i c a t e d the experiment e i g h t t i m e s , to produce a t o t a l of 64 r a t i n g s per sample (8 p a n e l i s t s χ 8 r e p l i cates = 64 p a n e l i s t / r e p l i c a t e r a t i n g s ) .
0. 2. Odor hedonics is often a monotonic function of concentration, but cannot be modeled by a power function. 3. Odor quality can be captured by means of a profiling system, using magnitude estimation as the measuring system. 4. In binary mixtures, odor intensity is usually suppressed for more intense component, so that the final mixture intensity is somewhere in between the intensities of the components. 5. In binary mixtures, hedonics are often changed, so that the addition of a pleasing component to a displeasing one makes the mixture more pleasing.
U. , (1975), 8, 237. , "Psychophysics", John Wiley, New York, (1975). Η. "Modern Factor Analysis", Univ. of Chicago Press (1966). , Chem. , (1975), 1, 411. Dravnieks, A . L . , Personal Communication. Engen, T. Ann. Y. Acad. S c i . , (1974), 237, 224. ; ACS Symposium Series; American Chemical Society: Washington, DC, 1977. 4 Structural and Mechanical Indicators of Flavor Quality ZATA VICKERS Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108 Is the flavor of a and mechanical properties There is some literature on the subject but l i t t l e , i f any, attempts to explain how and why such relationships exist.
Flavor Quality: Objective Measurement by Richard A. Scanlan