Czech J. Food Sci., 2007, 25(6):333-338 | DOI: 10.17221/749-CJFS
The influence of the development specific surface of sorption on the wettability of instant soups
- Department of Hotel and Tourism Management, Faculty of Business Administration, Gdynia Maritime Academy, Gdynia, Poland
In the present experiment, the sorption isotherms were determined for instant-type soups, giving rise to colloidal solutions and proper solutions as a consequence of hydration. On the basis of the isotherm course in the range 0.07-0.44 aw, specific surface was defined for the material under study. Further, the examined foodstuff concentrates wettability was established by measuring the time from the moment of powder penetration to the continuous phase. On the basis of the results obtained, conclusions were formulated concerning the influence of specific surface of sorption on the wettability of the products examined.
Keywords: instant soup; wettability; specific surface of sorption; BET equation
Published: December 31, 2007 Show citation
References
- Chirife J., Suarez C., Iglesias H.A. (1986): The calculation of the heat of water sorption in foods on the basis of B.E.T. theory. Journal of Food Technology, 21:103-107.
Go to original source... - Domian E., Lenart A. (2000): Adsorption of water vapour by food in powder. Żywność Technologia Jakość, 4: 25, 27-35. (In Polish)
- Dutkiewicz E.T. (1999): Physical Chemistry of Surface. WNT, Warszawa. (In Polish)
- Lewicki P.P. (2003): Water as a component of food. Przemysł Spożywczy, 57(5): 8-14, 50. (In Polish)
- Ościk J. (1979): Adsorption. PWN, Warszawa. (In Polish)
- Paderewski M. (1982): Adsorption and Adsorbers. Wydawnictwo Politechniki Szczecińskiej, Szczecin. (In Polish)
- Paderewski M. (1999): Processes of Adsorption in Chemical Engineering. WNT, Warszawa. (In Polish)
- Pijanowski E., Dłużewski M., Dłużewska A., Jarczyk A. (1997): The General of Food Technology. WNT, Warszawa. (In Polish)
- PN-78/A-86030-3 Milk and Dairy Products. Milk powder. Test methods. (In Polish)
- PN-86/A-94000 Food Concentrate. Names and Definitions. (In Polish)
- Świderski F. (1999): Science of Commodities Food after Technological Processing. Wydawnictwo SGGW, Warszawa. (In Polish)
- Świtka J. (1992): Impact of chosen technological factors on sorption properties of dried creamary products. Scientific WSM Work in Gdynia. (In Polish)
- Timmermann E.O., Chirife J., Iglesias H.A. (2001): Water sorption isotherms of foods and foodstuffs: BET or GAB parameters? Journal of Food Engineering, 48: 19-31.
Go to original source... - Tyszkiewicz S. (1987): Activity of water of foodstuffs. Definition. Method of the absolute measu-rement. Patterns. Przemysł Spożywczy, 51-53. (In Polish)
- Wisła E. (1982): The influence of modification solid adsorbents texture of the carbon dioxide adsorption. Scientific Work in Kraków. (In Polish)
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.

