| 1. |
- Honnens de Lichtenberg Broge, Eva, et al.
(författare)
-
Changes in perception and liking for everyday food odors among older adults
- 2021
-
Ingår i: Food Quality and Preference. - : Elsevier Ltd.. - 0950-3293. ; 93, s. 1-12
-
Tidskriftsartikel (refereegranskat)abstract
- The age-related decline in olfactory function is well established and concerns intensity perception and odor identification. However, the extent to which olfactory decline influences food preferences is less clear. Furthermore, it is unclear whether there are decline patterns relating to food odors, specifically. This study investigated intensity perception and hedonic liking for 14 multi-component food odors and one pure odorant in three groups of older adults (age 60–69, age 70–70, age 80 + ) and a group of young adults. In total 335 subjects were tested, 246 old and very old adults and 89 young adults. The age group 60–69 was on par with the young adults, whereas intensity perception declined for the majority of odors for older adults age 70–79 and the very old age 80 + . The largest drop in intensity perception was seen for savory odors; fried meat, mushroom and onion. In contrast, intensity perception for raspberry and orange did not differ between groups of older adults and young adults. Hedonic liking decreased to some degree with increasing age but remained largely the same for savory odors (bacon, mushroom, fried meat and onion). A decline in liking was seen for coffee and thyme. This study shows evidence that age-related decline in intensity perception is food odor specific and some aggregation may occur at a higher concept level for the “savory” category. Furthermore, hedonic liking is not necessarily dependent on the intensity perception as seen for several odors, where declining intensity perception did not impact hedonic liking. This could be explained by changes in dose-response relationships for the group of ageing individuals, which in fact may favor persistence of the food odor liking, despite a decline in their intensity perception.
|
|
| 2. |
- Honnens de Lichtenberg Broge, Eva, et al.
(författare)
-
Familiarity and recognition of everyday food odours in older adults and influence on hedonic liking
- 2022
-
Ingår i: Food Quality and Preference. - : Elsevier Ltd.. - 0950-3293. ; 103, s. 1-10
-
Tidskriftsartikel (refereegranskat)abstract
- In an aging population, changes in sensory abilities can adversely affect enjoyment of a meal. Age-related changes in identification ability and familiarity of food odors may influence food intake since some foods become less recognizable and attractive, which may affect the individual’s health and nutritional condition. The aim of this study was to examine age-related changes in familiarity and the ability to correctly identify everyday food odors in older adults. We also aimed to establish the relationship between these changes and hedonic liking of food odors compared to young adults. The study included 335 participants, 246 older adults and 89 young adults. A positive relationship between familiarity and liking was observed across all food odors. Familiarity and odor identification ability declined with increasing age. The most significant loss in the ability to identify odors was observed for curry, fried meat, and toasted bread, while both age groups identified banana, orange, and vanilla equally well. For older adults with a diminished perception of familiarity and a reduced ability to identify odors correctly, increasing the concentration of the odor improved familiarity and enhanced their ability to identify odors. Our findings support the notion that the familiarity of food odors is an important parameter for the appreciation of food in older adults.
|
|
| 3. |
- Redsted Rasmussen, Arne, et al.
(författare)
-
Viviparous sea snakes can be used as bioindicators for diverse marine environments
- 2020
-
Ingår i: Philippine Journal of Systematic Biology. - : Association of Systematic Biologists of the Philippines. - 1908-6865 .- 2508-0342. ; 14:2
-
Tidskriftsartikel (refereegranskat)abstract
- Shallow tropical marine ecosystems are under great anthropogenic pressure due to habitat destruction, overfishing,shrimping, climate change, and tourism. This is an issue of global concern as such environments hold a tremendousbiodiversity much of which remains to be described. The present situation urgently calls for time- and resource-efficientmethods to identify and delineate the most valuable remaining areas and to set up priorities for their management andconservation. Using indicator species can be a way to accomplish this goal. In this paper we evaluate whether viviparoussea snakes can serve as bioindicators for other rare or cryptic tropical marine fauna. Based on seven generallyacknowledged criteria for bioindicators, we argue that using viviparous sea snakes as bioindicators can help monitoringmarine habitats to gauge the effects of climate change, habitat change and loss, decline in biodiversity and otheranthropogenic changes. However, to maximize their efficacy as bioindicators, deeper knowledge about viviparous seasnakes natural history is urgently needed. Topics for expanded research programs include the taxonomy of some groups,their breeding and feeding biology, habitat selection and their geographical distribution. Despite these gaps in ourunderstanding, we argue that viviparous sea snakes can be utilized as bioindicators of marine ecosystem health.
|
|
