Detecting Fat Content of Food from a Distance: Olfactory-Based Fat Discrimination in Humans

被引:35
作者
Boesveldt, Sanne [1 ,2 ]
Lundstrom, Johan N. [2 ,3 ,4 ]
机构
[1] Wageningen Univ, Div Human Nutr, NL-6700 AP Wageningen, Netherlands
[2] Monell Chem Senses Ctr, Philadelphia, PA 19104 USA
[3] Karolinska Inst, Dept Clin Neurosci, Stockholm, Sweden
[4] Univ Penn, Dept Psychol, Philadelphia, PA 19104 USA
来源
PLOS ONE | 2014年 / 9卷 / 01期
关键词
ORAL-SENSITIVITY; TIME-INTENSITY; OIL PREFERENCE; ACIDS; RETRONASAL; MICE;
D O I
10.1371/journal.pone.0085977
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The desire to consume high volumes of fat is thought to originate from an evolutionary pressure to hoard calories, and fat is among the few energy sources that we can store over a longer time period. From an ecological perspective, however, it would be beneficial to detect fat from a distance, before ingesting it. Previous results indicate that humans detect high concentrations of fatty acids by their odor. More important though, would be the ability to detect fat content in real food products. In a series of three sequential experiments, using study populations from different cultures, we demonstrated that individuals are able to reliably detect fat content of food via odors alone. Over all three experiments, results clearly demonstrated that humans were able to detect minute differences between milk samples with varying grades of fat, even when embedded within a milk odor. Moreover, we found no relation between this performance and either BMI or dairy consumption, thereby suggesting that this is not a learned ability or dependent on nutritional traits. We argue that our findings that humans can detect the fat content of food via odors may open up new and innovative future paths towards a general reduction in our fat intake, and future studies should focus on determining the components in milk responsible for this effect.
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页数:5
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