About: Water sorption isotherms of skimmed milk powder within the temperature range of 5-20 °C

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Description	Moisture sorption isotherms (MSI's) of skimmed milk powder in the temperature range of 5-20 °C were determined using manometric method. MSI's, which show the water content versus water activity (Aw) at a constant temperature, are used to describe relationships between water content and equilibrium state relative vapour pressure (RVP). The equilibrium moisture content (EMC) of skimmed milk powder samples is growing with an increase of Aw at a constant temperature both for water adsorption and desorption. Isotherms were found to be type II of Brunauer-Emmett-Teller classifi cation. It is the type most common for foods. The shape of created isotherms was sigmoid. Structural modifi cations of crystals were observed during adsorption in the microscope, too. Critical value of EMC of tested samples corresponding to the Aw equal to 0.6 for adsorption was 6.50% MC (w.b.) at temperature 5 °C, 9.15% MC (w.b.) at temperature 10 °C, and 7.71% MC (w.b.) at temperature 20 °C. These values determine optimal conditions for storage from the point of view microorganisms grow, Aw{0.6. Moisture sorption isotherms (MSI's) of skimmed milk powder in the temperature range of 5-20 °C were determined using manometric method. MSI's, which show the water content versus water activity (Aw) at a constant temperature, are used to describe relationships between water content and equilibrium state relative vapour pressure (RVP). The equilibrium moisture content (EMC) of skimmed milk powder samples is growing with an increase of Aw at a constant temperature both for water adsorption and desorption. Isotherms were found to be type II of Brunauer-Emmett-Teller classifi cation. It is the type most common for foods. The shape of created isotherms was sigmoid. Structural modifi cations of crystals were observed during adsorption in the microscope, too. Critical value of EMC of tested samples corresponding to the Aw equal to 0.6 for adsorption was 6.50% MC (w.b.) at temperature 5 °C, 9.15% MC (w.b.) at temperature 10 °C, and 7.71% MC (w.b.) at temperature 20 °C. These values determine optimal conditions for storage from the point of view microorganisms grow, Aw{0.6. (en)
Title	Water sorption isotherms of skimmed milk powder within the temperature range of 5-20 °C Water sorption isotherms of skimmed milk powder within the temperature range of 5-20 °C (en)
skos:prefLabel	Water sorption isotherms of skimmed milk powder within the temperature range of 5-20 °C Water sorption isotherms of skimmed milk powder within the temperature range of 5-20 °C (en)
skos:notation	RIV/62157124:16270/12:43871327!RIV13-MSM-16270___
http://linked.open...avai/predkladatel	Fakulta veterinární hygieny a ekologie
http://linked.open...avai/riv/aktivita	S
http://linked.open...avai/riv/aktivity	S
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Štencl, Jiří Langová, Jitka Vlášek, Václav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Veterinární a farmaceutická univerzita Brno / Fakulta veterinární hygieny a ekologie
http://linked.open...dnocenehoVysledku	180734
http://linked.open...ai/riv/idVysledku	RIV/62157124:16270/12:43871327
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	sorption curve; water activity; skimmed milk powder (en)
http://linked.open.../riv/klicoveSlovo	water activity skimmed milk powder sorption curve
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[8CE774C357FE]
http://linked.open...i/riv/nazevZdroje	Acta Universitatis Agriculturae et Silviculturae Mendeleianae Brunensis
http://linked.open...in/vavai/riv/obor	GM
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	LX
http://linked.open...iv/tvurceVysledku	Vlášek, Václav Štencl, Jiří Langová, Jitka
issn	1211-8516
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	16270
is http://linked.open...avai/riv/vysledek of	Water sorption isotherms of skimmed milk powder within the temperature range of 5-20 °C

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