Kinetics and modeling of pepsin soluble collagen (PSC) extraction from the skin of malaysian catfish (Hybrid Clarias sp.).

摘要

The empirical kinetic models for the pepsin soluble collagen extraction from the skin of cultured hybrid catfish (Claris sp.) were studied using four two-parametric models, namely the power law, parabolic diffusion, Peleg's and Elovich's models. The Peleg's model was found to be the best model capable of predicting the extraction data with R 22.0%, and RMSD <10.0%, respectively. Kinetic models based on the second order rate equation were successfully developed to describe the extraction processes with different processing variables. Extraction rate constant, initial extraction rate and equilibrium concentrations for different acetic acid concentrations, liquid to solid ratios, and pepsin dosages were predicted. The verification of the developed models showed that the experimental values agreed with the predicted ones, with percentage error differences in the range of 0.03-3.91%