“…Since the molecular sizes of the extracts become larger from BS, BI–PS to PI, the reactions can be roughly regarded as two consecutive reactions: the reaction from BS to BI–PS, and the reaction from BI–PS to PI. 19 Setting BS, BI–PS and PI as A , B and C , respectively, the reactions are expressed as follows:
The kinetics equations are![]()
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According to the material balancing calculation
Solving this equation, we get A = a e − r 1 t ![]()
where a , b and c are the initial contents of BS, BI–PS and PI, respectively, r 1 and r 2 are the reaction rate constants of the two consecutive reactions and t is the reaction time.…”