Water activity of skimmed milk powder in the temperature range 20-45°C

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F99%3A22700004" target="_blank" >RIV/62156489:43210/99:22700004 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Water activity of skimmed milk powder in the temperature range 20-45°C

Popis výsledku v původním jazyce

Water activity data for adsorption and desorption of moisture from skimmed milk powder were investigated at temperatures in the range of 20 - 45°C and moisture content of the material tested from 3.2 to 20% (wet basis). The experimental procedure used was a gravimetric dynamic method with continuous registration of sample weight changes. Four mathematical models of sorption isotherms (Chung-Pfost, Halsey, Henderson, and Oswin) were evaluated to determine the best fit for the experimental data. The modified Oswin equation was a good model for moisture adsorption and desorption of skimmed milk powder. The critical value of equilibrium moisture content of milk powder tested, corresponding to the water activity equal 0.6, was 11 % (wet basis) at the temperature 20°C. The hysteresis effect between moisture adsorption and desorption was insignificant.

Název v anglickém jazyce

Water activity of skimmed milk powder in the temperature range 20-45°C

Popis výsledku anglicky

Water activity data for adsorption and desorption of moisture from skimmed milk powder were investigated at temperatures in the range of 20 - 45°C and moisture content of the material tested from 3.2 to 20% (wet basis). The experimental procedure used was a gravimetric dynamic method with continuous registration of sample weight changes. Four mathematical models of sorption isotherms (Chung-Pfost, Halsey, Henderson, and Oswin) were evaluated to determine the best fit for the experimental data. The modified Oswin equation was a good model for moisture adsorption and desorption of skimmed milk powder. The critical value of equilibrium moisture content of milk powder tested, corresponding to the water activity equal 0.6, was 11 % (wet basis) at the temperature 20°C. The hysteresis effect between moisture adsorption and desorption was insignificant.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GM - Potravinářství

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

1999

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Acta Veterinaria Brno

ISSN

0001-7213

e-ISSN

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Svazek periodika

68

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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