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A comparative study of methods for prediction of water activity of multicomponent aqueous solutions
Author(s) -
TENG T. T.,
SEOW C. C.
Publication year - 1981
Publication title -
international journal of food science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.831
H-Index - 96
eISSN - 1365-2621
pISSN - 0950-5423
DOI - 10.1111/j.1365-2621.1981.tb01832.x
Subject(s) - ternary operation , aqueous solution , electrolyte , thermodynamics , chemistry , water activity , mathematics , water content , biological system , environmental science , computer science , physics , geology , geotechnical engineering , electrode , biology , programming language
Summary Three methods of predicting the water activity of ternary and quaternary aqueous electrolyte and non‐electrolyte solutions, with possible application to intermediate moisture foods, have been critically examined and their predictive accuracies compared. In general, the Ross equation was found to display poorer predictive accuracy when compared with the other two methods. The Zdanovskii–Stokes–Robinson and the Ferro Fontán–Benmergui–Chirife equations generally gave predictive water activity values in good agreement with measured values, but no consistent advantage of one over the other was observed.