Publicação
Bioactive compounds of by-products of pineapple processing industries and the effect of UV-C radiation on those compounds
| dc.contributor.advisor | Martins, Margarida Moldão | |
| dc.contributor.author | Freitas, Ana Cristina Nunes Filipe | |
| dc.date.accessioned | 2011-04-29T09:15:25Z | |
| dc.date.available | 2011-04-29T09:15:25Z | |
| dc.date.issued | 2010 | |
| dc.description | Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia | por |
| dc.description.abstract | 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 | por |
| dc.identifier.uri | http://hdl.handle.net/10400.5/3077 | |
| dc.language.iso | eng | por |
| dc.publisher | ISA | por |
| dc.subject | pineapple | por |
| dc.subject | bioactive compounds | por |
| dc.subject | by-products | por |
| dc.subject | UV-C radiation | por |
| dc.title | Bioactive compounds of by-products of pineapple processing industries and the effect of UV-C radiation on those compounds | por |
| dc.type | master thesis | |
| dspace.entity.type | Publication | |
| oaire.citation.endPage | 94 | por |
| oaire.citation.startPage | 1 | por |
| rcaap.rights | restrictedAccess | por |
| rcaap.type | masterThesis | por |
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