Determination of the melatonin content of different varieties of tomatoes (Lycopersicon esculentum) and strawberries (Fragariaananassa)

► Melatonin is a bioactive present in foods. ► Melatonin was identified (LC-MS) in 11 tomato varieties and four strawberry varieties. ► Melatonin ranges 4.11-114.52 ng/g in tomatoes; 1.38-11.26 ng/g in strawberries. ► This paper provides useful data for Food Composition Tables.