Effect of drying method on shrinkage and porosity

Krokida, MK; Maroulis, ZB

dc.contributor.author	Krokida, MK	en
dc.contributor.author	Maroulis, ZB	en
dc.date.accessioned	2014-03-01T01:12:47Z
dc.date.available	2014-03-01T01:12:47Z
dc.date.issued	1997	en
dc.identifier.issn	0737-3937	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/12248
dc.subject	Apple	en
dc.subject	Banana	en
dc.subject	Bulk Density	en
dc.subject	Carrot	en
dc.subject	Conventional	en
dc.subject	Food Quality	en
dc.subject	Freeze Drying	en
dc.subject	Microwave	en
dc.subject	Osmotic	en
dc.subject	Particle Density	en
dc.subject	Porosity	en
dc.subject	Potato	en
dc.subject	Specific Volume	en
dc.subject	Vacuum	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Crops	en
dc.subject.other	Dehydration	en
dc.subject.other	Density (specific gravity)	en
dc.subject.other	Fruits	en
dc.subject.other	Mathematical models	en
dc.subject.other	Moisture	en
dc.subject.other	Porosity	en
dc.subject.other	Shrinkage	en
dc.subject.other	Vacuum applications	en
dc.subject.other	Air drying	en
dc.subject.other	Freeze drying	en
dc.subject.other	Microwave drying	en
dc.subject.other	Osmotic drying	en
dc.subject.other	Vacuum drying	en
dc.subject.other	Drying	en
dc.title	Effect of drying method on shrinkage and porosity	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/07373939708917369	en
heal.identifier.secondary	http://dx.doi.org/10.1080/07373939708917369	en
heal.language	English	en
heal.publicationDate	1997	en
heal.abstract	The effect of drying method on bulk density, particle density, specific volume and porosity of banana, apple, carrot and potato at various moisture contents was investigated, using a large set of experimental measurements. Samples were dehydrated with five different drying methods: conventional, vacuum, microwave, freeze and osmotic drying. A simple mathematical model was used in order to correlate the above properties with the material moisture content. Four parameters with physical meaning were incorporated in the model: the enclosed water density rho(w), the dry solid density rho(s), the dry solid bulk density rho(b0) and the volume shrinkage coefficient beta'. The effect of drying method on the examined properties was taken into account through its effect on the corresponding parameters. Only, dry solid bulk density was dependent on both material and drying method. Freeze dried materials developed the highest porosity, whereas the lowest one was obtained using conventional air drying.	en
heal.publisher	MARCEL DEKKER INC	en
heal.journalName	Drying Technology	en
dc.identifier.doi	10.1080/07373939708917369	en
dc.identifier.isi	ISI:A1997YF27800006	en
dc.identifier.volume	15	en
dc.identifier.issue	10	en
dc.identifier.spage	2441	en
dc.identifier.epage	2458	en