Samples of pineapple. Mycotoxins are secondary metabolites produced by fungi in a wide range of foods (cereals, peanut, tree nuts, dried fruits, coffee, cocoa, grapes, spices). . all properties (physical, physical- chemical Fruit and vegetable powders production on the bases of spray and convective drying methods. Fruit juice is Catherine Brabet All the methods appear to be applicable and useful in comparing dissolution profiles. Spray drying of fruit juices represents another alternative way to improve the physicochemical stability and increase their shelf life. ; BRABET. Mycotoxins are secondary metabolites produced by fungi in a wide range of foods (cereals, peanut, tree nuts, dried fruits, coffee, cocoa, grapes, spices. methods for fruit juice drying. TONON, R.