13:30 - 15:30
Sat-S13
Goethe Hall
Chair/s:
Cinzia Cecchetto
Across species, chemosensation is the result of complex interactions between the environment, the sensory organs, and the neural system. As a result even minimal changes in the external or internal milieu can perturb chemosensory experience. Here we showcase a group of young, promising scientists who are uncovering the effect of different perturbations on the chemosensation of their respective model systems.
Understanding the role of capsaicin in food liking and salt taste perception in individuals with smell loss
Sat-S13-005
Presented by: Stephanie Hunter
Stephanie Hunter, Pamela H. Dalton
Monell Chemical Senses Center, Philadelphia, PA 19104, United States
When people lose their sense of smell, they often find food less enjoyable and as a result alter their diet to increase flavor and eating enjoyment. One dietary alteration that is often reported is adding more salt to foods, and preferring salty foods. Over time, however, this can lead to excess salt intake and increased risk for cardiovascular disease . Among individuals with a normal sense of smell, the addition of capsaicin to reduced salt dishes has been shown to increase saltiness perception and overall flavor; whether adding capsaicin produces measurable improvements in saltiness perception and food liking has not been studied in those with smell loss. The purpose of this study was to determine 1) whether salt intake in those with smell loss differs from population averages, and 2) whether capsaicin increases flavor and salt taste intensity, and enjoyment of foods in individuals with smell loss. Individuals having confirmed partial or total smell loss for at least 12 weeks rated total flavor, taste quality, and spiciness intensity, and liking of samples with different levels of spice and/or salt. 24-hour urine samples were also collected to determine sodium intake. Preliminary findings indicate that although sodium intake is higher than recommended, those with smell loss do not consume more sodium than population averages (2741 ± 271 mg vs 3039 ± 99 mg, respectively; p=0.3). Adding moderate amounts of capsaicin to a reduced sodium soup increased total flavor intensity (p=0.003) and salt taste intensity (p<0.001) compared to the same soup without capsaicin, such that it was rated as flavorful and salty as a regular sodium soup with twice as much sodium. However, there were no differences in liking between the soup samples with and without capsaicin (p>0.05). Thus, capsaicin may help to improve flavor and increase salt taste intensity in people with smell loss, however more research is needed to understand its acceptability in the diet.