Dear scholars,
In order to modeling the bread staling, Avrami Model (please check the attachment) has been used in papers. Some of its part are unclear for me:
θ(t) is the fraction of recrystallization
F0, Ft, and F∞ are the firmness values at zero time, t time, and infinite time, respectively
k is the constant rate of the process; and n is the Avrami exponent related to the crystal morphology that describes the order of crystal
growth
n is Avrami exponent
I don't understand how "k" and "n" can be measured?
I appreciate your guidance.
Regards,
Amir
Hello Amir!
As long as I know, you don't measure "k" and "n". These will be the parameters that describe the shape of your fitted curve when you use Avrami equation for modeling your "F0" and "Ft" data.
The input values for Avrami modeling should be F0 and Ft, while the output parameters should be F∞, k and n.
Since θ(t) = (F∞ - Ft)/(F∞ - F0), you may have to transform your equation or normalize your data if you have no idea of the F∞ value. If you have a clue of the value of F∞ you can use it as a initializing value of the iteration.
I hope you find my answer helpful.
Regards,
Gabriel.
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