La viande contient un peu de mélatonine, pourtant elle a un effet négatif sur son niveau.
Melatonin intake and potential chronobiological effects on human health
Ana Luiza Gomes Domingos Critical Reviews in Food Science and Nutrition 2017
Melatonin is an indolamine with a recognized chronobiotic role. In turn, the supplementation of melatonin through capsules has been shown to be efficient in the modulation of inflammatory markers, oxidative stress, as well as in the control of hypertension and metabolic syndrome. However, the science of nutrition is interested in the study of the food sources of this hormone and its possible therapeutic effects. Thus, this review aimed to identify and present scientific papers that quantified melatonin in foods and evaluated its application in intervention studies. In total, 278 studies were found, of which 17 were included in this review. The results show that meats, fish, eggs, cereals, tubers, oilseeds, mushrooms, fruits, vegetables, alcoholic and non-alcoholic beverages and dairy products had some items analyzed for their melatonin concentrations. The concentrations reported presented considerable amplitude among different foods and even within the same species, possibly due to differences in cultivation and different hormonal dosing techniques. Also, different concentrations of melatonin can be presented for the same food when submitted to processes such as cooking, roasting or fermentation. The intervention studies presented positive results regarding the consumption of foods rich in melatonin and clinical-metabolic indicators. However, in order to guide nutritional behavior, it is necessary to consult a composition table that makes melatonin concentrations available and considers the processes involved in the preparation of the food. With this table, it will be possible to analyze the real effect of habitual consumption of melatonin from food on health.
For the fruit group, one study evaluated the consumption of six fruits (orange, mango,
pineapple, banana, papaya and pawpaw) individually in 30 healthy individuals (15 men and 15
women). The fruits were processed according to the daily consumption tolerance (juice or unit)
and were consumed in the evening after meal, between 6 pm and 6:30 pm. An increase in aMT6s
urinary concentration was observed after the intake of pineapple (266%, p = 0.004), banana
(180%, p = 0.001), and orange (47%, p = 0.007) (Johns et al. 2013). With this, consumption of
these fruits can be stimulated close to bedtime.
These findings suggest that tropical fruit consumption increases
the concentrations of melatonin in the serum, as well as improves antioxidant capacity (SaeTeaw
et al. 2013).
Different brands sold in Spain were analyzed for the content of melatonin and it was verified that
the greater the alcohol content of the beer, the greater the concentration of melatonin.