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No Difference in Perceived Intensity of Linoleic Acid in the Oral Cavity between Obese and Non‐Obese Adults
Author(s) -
Tucker Robin,
Nuessle Tiffany,
Garneau Nicole,
Mattes Richard
Publication year - 2015
Publication title -
the faseb journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.709
H-Index - 277
eISSN - 1530-6860
pISSN - 0892-6638
DOI - 10.1096/fasebj.29.1_supplement.746.1
Subject(s) - linoleic acid , oral cavity , obesity , intensity (physics) , medicine , chemistry , dentistry , fatty acid , physics , optics , biochemistry
The objective of this study was to characterize intensity perception of linoleic acid (LA) in the oral cavity in a large population. Visitors (N=504) to the Denver Museum of Nature & Science in Denver, Colorado, were tested by trained citizen scientist volunteers following Institutional Review Board approval. This randomized, double‐blind study asked participants 蠅 age 8 to rate the intensity of edible taste strips containing either no stimulus (blank) or varying amounts of LA that represent amounts commonly found in food (Low=0.06%, Medium=0.15%, High=0.38%) using a 10 cm visual analog scale (VAS). Nose clips were worn. Percent body fat (BF%) was assessed by bioelectrical impedance. Participants: 382 adults, 122 children; 202 male, 301 female, 1 unknown; predominantly Caucasian (85.5%). Age range: 8‐90 y, mean=33 y. BF%: 29.9 ± 10.9% (mean ± SEM). Mean (± SEM) intensity ratings: Blank: 19.55 ± 1.05; Low: 21.1 ± 1.1; Medium: 29.4 ± 1.2; High: 42.9 ± 1.3. Statistical analysis indicated significantly different ratings between all stimuli (p<0.001) except between the blank and low concentration in both adults and children. Children rated each concentration higher than adults (p蠄0.001). BF% was not correlated with intensity ratings, and no differences in ratings were observed in non‐obese (N=162) vs. obese (N=217) adults. Increased sensitivity to LA in younger participants agrees with other, but not all, studies of various taste qualities, while no differences in sensitivity between obese vs. non‐obese adults corroborates previous taste research. Supported by: USDA [HATCH IND084055].