Study of moisture adsorption process in comfrey (symphytum officinale l.) roots ta 25 Celsius degree

Zobrazit minimální záznam

dc.contributor.author Červenka, Libor
dc.contributor.author Kubínová, Jana
dc.contributor.author Juszczak, Leslaw
dc.contributor.author Witzak, Teresa
dc.date.accessioned 2012-03-08T09:58:22Z
dc.date.available 2012-03-08T09:58:22Z
dc.date.issued 2010
dc.identifier Univerzitní knihovna (studovna)
dc.identifier.isbn 978-80-7395-386-7 (Online)
dc.identifier.isbn 978-80-7395-368-3 (Print)
dc.identifier.issn 1211-5541
dc.identifier.uri http://hdl.handle.net/10195/42543
dc.description.abstract Sorption isotherms of comfrey (Symphytum officinale L.) root samples with different particle size were obtained at 25 °C. The shape of isotherm was similar to those of high-sugar-content foods and the particle size did not affect adsorption process in the aw range used in this study. Blahovec–Yanniotis model was considered to give the best fit over the whole range of aw tested. Various parameters describing the properties of sorbed water derived from GAB and Blahovec–Yanniotis models have been discussed. DSC method was used to measure the glass transition temperatures (Tg) of root samples in relation to water activity. The safe moisture content was determined in 13.39 g/100g in dried basis at 25 °C. Combining of the Tg line with sorption isotherm in one plot showed that 6 Červenka L. et al./Sci. Pap. Univ. Pardubice Ser. A 16 (2010) 5–18 the glass transition temperature concept overestimated the temperature stability for both root samples. eng
dc.format p. 5-18
dc.language.iso eng
dc.publisher Univerzita Pardubice cze
dc.relation.ispartof Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 16 (2010)
dc.subject moisture adsorption process eng
dc.subject sorption isotherms of comfrey eng
dc.subject Blahovec–Yanniotis models eng
dc.title Study of moisture adsorption process in comfrey (symphytum officinale l.) roots ta 25 Celsius degree eng
dc.type Article eng
dc.identifier.signature 47333-16
dc.peerreviewed yes
dc.publicationstatus published


Tento záznam se objevuje v následujících kolekcích

Zobrazit minimální záznam

Vyhledávání


Rozšířené hledání

Procházet

Můj účet