Osmotic dehydration and hot air drying on mango, guava and lemon to obtain functional ingredients

Abstract

The main objective of this paper is to present and discuss the results of the application of the techniques of osmotic dehydration and hot air drying on mango, guava and lemon so as to give them an added value and to make the most out of these crops to obtain functional ingredients. These fruits came from small agricultural producers in the Department of Altantico, Colombia. The compounds of nutraceutical interest were determined: fiber, calcium and vitamin C. All of them were studied before and after the dehydration process. These two different products were obtained: of low humidity, such as lemon dehydrated peel zest, mango-lemon sheet, mango powder, and guava powder; and of intermediate humidity, dehydrated mango and guava. The hot air-drying process allowed to obtain a lemon dehydrated peel zest, mango powder, and guava powder. These last two products contained an important amount of dietary fiber and vitamin C. By contrast, there was a significant loss of vitamin C in the osmodehydrated products.