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Factors affecting blueberry physical-chemical properties

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dc.contributor.authorGuiné, Raquel
dc.contributor.authorGonçalves, Christophe
dc.contributor.authorGonçalves, Fernando
dc.contributor.authorCosta, Daniela
dc.date.accessioned2015-12-07T10:35:45Z
dc.date.available2015-12-07T10:35:45Z
dc.date.issued2015
dc.description.abstractThe objective of this work is to investigate the effect of different production and conservation factors on the properties of blueberries. The production factors considered were cultivar (Duke, Bluecrop, Ozarkblue) and production mode (organic or conventional). The conservation factors were temperature (ambient, refrigeration) and time (0, 7, 14 days). The properties under study were: physical properties (color and texture); some chemical components (moisture content, sugars and acidity) and phenolic and antioxidant properties (total phenols, anthocyanins, tannins, ABTS antioxidant activity, DPPH antioxidant activity). This work showed that moisture content was only influenced by cultivar and that both acidity and sugar contents varied according to the production mode used. The results evidenced that the antioxidant activity was not statistically different according to cultivar, production mode or conservation. As to the phenolics, only tannins showed significant differences according to production mode, being higher for organic farming. Color parameters showed some significant differences, so that the most intense blue corresponded to blueberries from cv. Duke, form organic farming and stored under refrigeration. Texture was also very significantly influenced by the three factors at study, cultivar, production mode and conservation, being the berries with higher firmness those from cultivar Duke and stored under refrigeration.pt_PT
dc.identifier.citationGuiné RPF, Gonçalves C, Gonçalves F, Costa DVTA. (2015) Factors affecting blueberry physical-chemical properties, in Proceedings of ICEUBI2015 – International Conference of Engineering: Engineering for Society, Covilhã, 9 pp.pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.19/2996
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.subjectBlueberrypt_PT
dc.subjectCultivarpt_PT
dc.subjectConservationpt_PT
dc.subjectProduction modept_PT
dc.subjectStatistical Analysispt_PT
dc.titleFactors affecting blueberry physical-chemical propertiespt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceCovilhãpt_PT
oaire.citation.titleICEUBI2015 – International Conference of Engineering: Engineering for Societypt_PT
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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