UTL Repository >
ISA - Instituto Superior de Agronomia >
BISA - Biblioteca do Instituto Superior de Agronomia / Library >
BISA - Dissertações de Mestrado / Master Thesis >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10400.5/3077

Title: Bioactive compounds of by-products of pineapple processing industries and the effect of UV-C radiation on those compounds
Authors: Freitas, Ana Cristina Nunes Filipe
Advisor: Martins, Margarida Moldão
Keywords: pineapple
bioactive compounds
UV-C radiation
Issue Date: 2010
Publisher: ISA
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
Description: Mestrado em Engenharia Alimentar - Instituto Superior de Agronomia
URI: http://hdl.handle.net/10400.5/3077
Appears in Collections:BISA - Dissertações de Mestrado / Master Thesis

Files in This Item:

File Description SizeFormat
Relatorio_tese_mestrado_Ana_Freitas_2010.pdf2.76 MBAdobe PDFView/Open
Restrict Access. You can request a copy!
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


Estamos no RCAAP Governo Português separator Ministério da Educação e Ciência   Fundação para a Ciência e a Tecnologia

Financiado por: