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KMID : 0380619820140040330
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Korean Journal of Food Science and Technology
1982 Volume.14 No. 4 p.330 ~ p.335
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Prediction of Ascorbic Acid Stability in Powdered Beverage
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Abstract
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A powdered beverage with afruit flavor was stored at 4, 21, 35 and 45℃ for 180 days to study ascerbic acid destruction at the selected temperatures. Degradation of ascorbic acid in the model followed the first order reaction, and the temperature dependence of reaction rate constants at tested temperatures was accounted for by the Arrhenius equqtion. The calculated activation energy for the destruction of ascorbic acid was 3. 3 Kcal/mole. The relationship between ascorbic acid content and sensory flavor score of the beverage indicated that samples with destruction of ascorbic acid over 25 showed objectionable flavor.
An attempt was made to predict the quality of powdered beverage by using a simulation model. A comparision between ascorbic acid values from shelflife tests and the simulation program showed a good agreement within acceptable error. This result demonstrated that quality of powdered beverage could be predicted by using a computer simulation model with a desired accuracy.
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