A carregar...
Publicação
Bioactive compounds of by-products of pineapple processing industries and the effect of UV-C radiation on those compounds
| Nome: | Descrição: | Tamanho: | Formato: | |
|---|---|---|---|---|
| 2.69 MB | Adobe PDF |
Orientador(es)
Resumo(s)
The aim of the current work was to characterize/quantify bioactive compounds of by-products of
pineapple industries and to study the effect of UV-C radiation on those compounds. The bioactive compounds
studied were eight carotenoids, vitamins A, C and E, eight minerals and pectins. Further characterization of
pineapple by-products included moisture content, pH, total soluble solids (TSS), ash, and colour. The study of the
effect of UV-C radiation on bioactive compounds focused on carotenoids and vitamins. Pineapple by-products
studied had high levels of vitamin C and minerals (mainly K, Na, Mg and Ca). Both pineapple by-products
presented b-carotene. In opposition to pineapple core, pineapple rind had detectable amounts of lutein and a-
carotene. Pineapple rind presented higher levels of retinol activity equivalents (RAE), carotenoids, pH, ash, Zn,
Ca, K and pectins and lower TSS, Mg and L-ascorbic acid than pineapple core. The UV-C treatment led to an
increase of b-carotene, a-carotene, RAE and L-ascorbic acid in pineapple rind and to a decrease of pineapple
core L-ascorbic acid. UV-C had no effect on lutein content of pineapple rind and on b-carotene and RAE of
pineapple core. The results also showed that the type of pineapple by-product had a higher influence on bioactive
compounds content than the applied UV-C treatment
Descrição
Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia
Palavras-chave
pineapple bioactive compounds by-products UV-C radiation