Osmodehydrofreezing of tomato: From production to consumption

Dermesonlouoglou, EK; Boulekou, S; Giannakourou, MC; Taoukis, PS

dc.contributor.author	Dermesonlouoglou, EK	en
dc.contributor.author	Boulekou, S	en
dc.contributor.author	Giannakourou, MC	en
dc.contributor.author	Taoukis, PS	en
dc.date.accessioned	2014-03-01T02:51:09Z
dc.date.available	2014-03-01T02:51:09Z
dc.date.issued	2007	en
dc.identifier.issn	05677572	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35401
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-70449389346&partnerID=40&md5=abcb4eea1a39331ff4028acf4adeb6dd	en
dc.subject	Frozen	en
dc.subject	Lycopersicon esculentum	en
dc.subject	Osmotic dehydration	en
dc.subject	Pilot-plant	en
dc.subject	Quality characteristics	en
dc.subject	Storage	en
dc.subject.other	Lycopersicon esculentum	en
dc.title	Osmodehydrofreezing of tomato: From production to consumption	en
heal.type	conferenceItem	en
heal.publicationDate	2007	en
heal.abstract	Frozen quality of sensitive fruits and vegetables can significantly be improved by osmotic dehydration (OD) as a pre-freezing treatment due to the reduction of freezable water and/or to possible functional properties of impregnated solutes. The objective of this work was the design of a «scale-up» OD process for the pre-treatment of frozen tomato with high-DE maltodextrin syrup followed by a quality degradation study. According to results, OD caused substantial water loss and solid enrichment in tomato tissue. Based on the following comparative quality study of frozen tomatoes, the protective effect of the OD on L-ascorbic acid, lycopene and color was demonstrated. The obtained sugar enrichment and partial water removal improved the sensory characteristics of treated tomatoes when compared to untreated ones. The untreated tomatoes suffered from a detrimental texture and taste deterioration during storage. The osmotic solute addition caused freezing point depression and glass transition temperature point increase.	en
heal.journalName	Acta Horticulturae	en
dc.identifier.volume	758	en
dc.identifier.spage	159	en
dc.identifier.epage	164	en