Air-drying kinetics of osmotically dehydrated fruits

Karathanos, VT; Kostaropoulos, AE; Saravacos, GD

dc.contributor.author	Karathanos, VT	en
dc.contributor.author	Kostaropoulos, AE	en
dc.contributor.author	Saravacos, GD	en
dc.date.accessioned	2014-03-01T01:10:48Z
dc.date.available	2014-03-01T01:10:48Z
dc.date.issued	1995	en
dc.identifier.issn	0737-3937	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11447
dc.subject	Apple	en
dc.subject	Osmotic dehydration	en
dc.subject	Porosity	en
dc.subject	Storage stability	en
dc.subject	Water diffusivity	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	MASS-TRANSFER	en
dc.subject.other	WATER DIFFUSIVITY	en
dc.subject.other	PINEAPPLE	en
dc.subject.other	BEHAVIOR	en
dc.title	Air-drying kinetics of osmotically dehydrated fruits	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/07373939508917036	en
heal.identifier.secondary	http://dx.doi.org/10.1080/07373939508917036	en
heal.language	English	en
heal.publicationDate	1995	en
heal.abstract	The air drying kinetics of fresh and osmotically dehydrated fruits (apples) was determined. Two sugars, glucose and sucrose, were used as osmotic dehydration agents. Three levels of sugar concentration (15%, 30% and 45%) and several times of immersion into the sugar solution were used. Following the osmotic preconcentration, the fruit samples were dried at 55 degrees C and the weight of material was recorded. The effective water diffusivity of samples treated under various osmotic conditions was estimated and the results were related to the sugar content and the bulk porosity of the samples. The effective water diffusivity, resulting from the application of the diffusion equation to the drying kinetics of the apples was found to decrease significantly for the samples pretreated by a concentrated sugar solution (e.g. 45%), evidently due to the lower porosity and other physicochemical factors. The low diffusivity may be beneficial in the storage stability and utilization of dehydrated fruits.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Drying Technology	en
dc.identifier.doi	10.1080/07373939508917036	en
dc.identifier.isi	ISI:A1995RP12700029	en
dc.identifier.volume	13	en
dc.identifier.issue	5-7	en
dc.identifier.spage	1503	en
dc.identifier.epage	1521	en