Effects of lignin and surfactant on adsorption and hydrolysis of cellulases on cellulose

Biotechnology for Biofuels
Yanfei LiJunhua Zhang

Abstract

Considerable works have been reported concerning the obstruction of enzymatic hydrolysis efficiency by lignin. However, there is a lack of information about the influence of lignin on the adsorption of cellulases on cellulose, along with the hydrolytic activity of the cellulases adsorbed on lignin. In addition, limited discovery has been reported about the influence of additives on cellulase desorption from lignin and lignocellulosic materials. In this work, the effects of lignin on cellulase adsorption and hydrolysis of Avicel were investigated and the effects of Tween 80 on cellulases adsorption and desorption on/from lignin and corn stover were explored. The results showed that the maximum adsorption capacity of Avicel reduced from 276.9 to 179.7 and 112.1 mg/g cellulose with the addition of 1 and 10 mg lignin per gram Avicel, which indicated that lignin adsorbed on Avicel reduced surface area of cellulose and lignin available for cellulases. Cellulases adsorbed on lignin could be released by reaching new adsorption equilibrium between lignin and supernatants. In addition, cellulases desorbed from lignin still possess hydrolytic capacity. Tween 80 could adsorb onto both lignin and corn stover, and reduce the cellulase adsorp...Continue Reading

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Citations

Jul 28, 2016·Analytical Biochemistry·Lucia FraňováPeter Biely
Apr 28, 2018·Bioprocess and Biosystems Engineering·A AlhammadL P Christopher
May 16, 2020·Frontiers in Bioengineering and Biotechnology·Moira GiovannoniBenedetta Mattei
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Mar 22, 2019··Made Tri Ari Penia KresnowatiAndi Asdiana Irma Sari Yusuf

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