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A Monte Carlo analysis of acid hydrolysis of glycosidic bonds in polysaccharides
Author(s) -
Pinto JoséHenrique Q.,
Kaliaguine Serge
Publication year - 1991
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690370613
Subject(s) - depolymerization , cellobiose , hydrolysis , chemistry , degree of polymerization , acid hydrolysis , amylose , markov chain monte carlo , monte carlo method , glycosidic bond , polysaccharide , starch , polymer , organic chemistry , polymerization , cellulase , mathematics , statistics , enzyme
Kinetic experiments for the hydrolytic depolymerization of cellobiose and amylose were performed in acidic medium. In the case of amylose, only the production rate of glucose was monitored. Then, a Monte Carlo procedure was developed to simulate long‐chain saccharide acid hydrolysis using the kinetic information obtained from the model compound, cellobiose. This stochastic procedure, which is applicable to the homogeneous acid hydrolysis of highly amorphous polysaccharides of sufficient degree of polymerization, provides estimated curves for the time evolution of all intermediate products. Literature data on the hydrolysis of oligoxylans were also compared to the results obtained from the Monte Carlo procedure. The depolymerization of linear polysaccharides, which should normally be viewed as a nonhomogeneous Markov chain, could be considered as a homogeneous Markov chain, provided that the chain is visited at specifically determined time intervals.