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Oscillating Cellulase Adsorption and Enhanced Lignocellulose Hydrolysis upon Ultrasound Treatment

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Abstract

We investigated the effects of ultrasound treatment on cellulase adsorption and lignocellulose hydrolysis. The activity of cellulase remained constant upon low-power ultrasound treatment (<120 W) and decreased using high-power ultrasound (>280 W). Oscillating cellulase adsorption occurred upon ultrasound treatment with any intensity. The maxima for desorption and adsorption were 41.9 and 83.1%, respectively, during 1 h of 90 W ultrasound treatment at 50 °C. A comparison between the short-time with long-time ultrasound experiments indicated that ultrasound treatment tended to desorb cellulase from substrate. However, ultrasound treatment also led to further surface erosion of biomass, which increased cellulase accessibility. These joint actions of ultrasound treatment induced the oscillating adsorption of cellulase. The increase in cellulase accessibility caused by ultrasound treatment led to a significant enhancement in lignocellulose hydrolysis.

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Acknowledgements

Supported by the Natural Science Foundation of China (No. 51473115 and No. 21276192) and the Research Project of Chongqing Education Commission (No. KJ1500632).

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Authors and Affiliations

  1. State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China

    Rongxin Su, Renjun Yang, Yang Jifeng, Wei Qi & Zhimin He

  2. Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China

    Rongxin Su & Wei Qi

  3. Chongqing Key Laboratory of Catalysis and Functional Organic Molecules, College of Environment and Resource, Chongqing Technology and Business University, Chongqing, 400067, China

    Ruoyu Du

  4. School of Environmental Science and Engineering, Tianjin University, Tianjin, 300072, China

    Renliang Huang

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  1. Rongxin Su
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  2. Renjun Yang
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  3. Yang Jifeng
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  4. Ruoyu Du
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  5. Renliang Huang
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  6. Wei Qi
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  7. Zhimin He
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Correspondence to Rongxin Su or Ruoyu Du.

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Su, R., Yang, R., Jifeng, Y. et al. Oscillating Cellulase Adsorption and Enhanced Lignocellulose Hydrolysis upon Ultrasound Treatment. Trans. Tianjin Univ. 23, 11–19 (2017). https://doi.org/10.1007/s12209-016-0019-9

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  • DOI: https://doi.org/10.1007/s12209-016-0019-9

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