Monell Chemical Senses Center, Philadelphia, PA, USA.
Int J Obes (Lond). 2012 Oct;36(10):1285-91. doi: 10.1038/ijo.2012.51. Epub 2012 May 1.
Although there are established age-related differences in sweet preferences, it remains unknown whether children differ from mothers in their preference for and perception of fat (creaminess). We examined whether individual differences in sucrose and fat preferences and perception are related to age, genotype and lifestyle.
Children 5-10 years-old (n=84) and their mothers (n=67) chose the concentration of sucrose and fat most preferred in pudding and sucrose most preferred in water using identical, two-alternative, forced-choice procedures, and ranked pudding samples for intensity of sweetness and creaminess. Subjects were also weighed and measured for height, as well as genotyped for a sweet-receptor gene (TAS1R3).
Children preferred higher concentrations of sucrose in water (P=0.03) and in pudding (P=0.05) and lower concentrations of fat in pudding (P<0.01) than did mothers. Children and mothers were equally able to rank the intensity of different concentrations of fat (P=0.12) but not sucrose in pudding (P=0.01). Obese and lean children and mothers did not differ in preferences, but obese mothers were less able to correctly rank the concentration of fat in pudding than were lean mothers (P=0.03). Mothers who smoked preferred a higher concentration of sucrose than did those who never smoked (P<0.01). Individual differences in sweet preference were associated with genetic variation within the TAS1R3 gene in mothers but not children (P=0.04).
Irrespective of genotype, children prefer higher concentrations of sugar but lower concentrations of fat in puddings than do their mothers. Thus, reduced-fat foods may be better accepted by children than adults.
尽管人们已经确定了甜味偏好与年龄有关,但目前尚不清楚儿童在对脂肪(乳脂感)的偏好和感知方面是否与母亲有所不同。我们研究了个体对蔗糖和脂肪的偏好和感知差异是否与年龄、基因型和生活方式有关。
5-10 岁的儿童(n=84)及其母亲(n=67)使用相同的、两种选择的强制选择程序,选择布丁中最喜爱的蔗糖和脂肪浓度,以及水中最喜爱的蔗糖浓度,并对布丁样品的甜度和乳脂感进行排序。还对受试者进行了称重和身高测量,并对甜味受体基因(TAS1R3)进行了基因分型。
与母亲相比,儿童更喜欢在水中(P=0.03)和在布丁中(P=0.05)添加更高浓度的蔗糖,以及在布丁中添加更低浓度的脂肪(P<0.01)。儿童和母亲能够对不同浓度的脂肪(P=0.12)而不是蔗糖在布丁中的强度进行同样的排序(P=0.01)。肥胖和瘦弱的儿童和母亲在偏好上没有差异,但肥胖母亲在正确排序布丁中脂肪浓度方面的能力低于瘦弱母亲(P=0.03)。吸烟的母亲比从不吸烟的母亲更喜欢高浓度的蔗糖(P<0.01)。母亲个体的甜味偏好差异与 TAS1R3 基因内的遗传变异有关,但与儿童无关(P=0.04)。
无论基因型如何,儿童在布丁中更喜欢高浓度的糖但低浓度的脂肪,这表明低脂肪食物可能比成人更受儿童欢迎。