A number of -treatment methods have been developed during the last few decades to overcome . Although the mechanisms of these -treatments are different, the final objective is the same – increasing cellulose accessibility to cellulase enzymes. Generally, pre-treatment is the process to disrupt the compact structure of lignocellulosic biomass and expose cellulose fibers, which can be achieved by mechanical comminution, modifications of biomass compositions, biological degradation, or a combination of these methods. After pre-treatment, the accessible surface area is resulting in the of cellulose digestibility.

In this paper, we review the progress of the fundamental researches of various biomass pre-treatment , especially on how these pre-treatments chemical composition and physically change cell structure. Understanding these changes would be helpful to further optimize existing pre-treatments, and would aid in developing novel pre-treatment methods.© 2012 of Chemical Industry and John Wiley & Sons, Ltd

See more here: Biomass recalcitrance. Part II: Fundamentals of different pre-treatments to increase the enzymatic digestibility of lignocellulose

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