Applied Biochemistry and Biotechnology

, Volume 181, Issue 2, pp 593–603 | Cite as

Addition of Surfactants and Non-Hydrolytic Proteins and Their Influence on Enzymatic Hydrolysis of Pretreated Sugarcane Bagasse

  • Johanna Méndez Arias
  • Anelize de Oliveira Moraes
  • Luiz Felipe Amarante Modesto
  • Aline Machado de Castro
  • Nei Pereira Jr
Article

Abstract

Poly(ethylene glycol) (PEG 4000) and bovine serum albumin (BSA) were investigated with the purpose of evaluating their influence on enzymatic hydrolysis of sugarcane bagasse. Effects of these supplements were assayed for different enzymatic cocktails (Trichoderma harzianum and Penicillium funiculosum) that acted on lignocellulosic material submitted to different pretreatment methods with varying solid (25 and 100 g/L) and protein (7.5 and 20 mg/g cellulose) loadings. The highest levels of glucose release were achieved using partially delignified cellulignin as substrate, along with the T. harzianum cocktail: increases of 14 and 18 % for 25 g/L solid loadings and of 33 and 43 % for 100 g/L solid loadings were reached for BSA and PEG supplementation, respectively. Addition of these supplements could maintain hydrolysis yield even for higher solid loadings, but for higher enzymatic cocktail protein loadings, increases in glucose release were not observed. Results indicate that synergism might occur among these additives and cellulase and xylanases. The use of these supplements, besides depending on factors such as pretreatment method of sugarcane bagasse, enzymatic cocktails composition, and solid and protein loadings, may not always lead to positive effects on the hydrolysis of lignocellulosic material, making it necessary further statistical studies, according to process conditions.

Keywords

Enzymatic hydrolysis Synergism Additives Cellulase Lignocellulosic biomass Biorefinery 

Notes

Acknowledgments

The authors would like to thank the Brazilian Petroleum Company (PETROBRAS) and Universidad de Costa Rica for scholarship and other financial supports.

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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Johanna Méndez Arias
    • 1
  • Anelize de Oliveira Moraes
    • 2
  • Luiz Felipe Amarante Modesto
    • 1
  • Aline Machado de Castro
    • 3
  • Nei Pereira Jr
    • 1
  1. 1.Laboratories of Bioprocess Development, School of ChemistryFederal University of Rio de JaneiroRio de JaneiroBrazil
  2. 2.Laboratory of Biotechnology and Environment, School of EngineeringFluminense Federal UniversityRio de JaneiroBrazil
  3. 3.Biotechnology Department, Research and Development CenterPETROBRASRio de JaneiroBrazil

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