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Optimization of enzymatic hydrolysis and fermentation conditions for improved bioethanol production from potato peel residues

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  • معلومة اضافية
    • Contributors:
      Ecole Supérieure des Industries Alimentaires de Tunis (ESIAT); Université Libre de Tunis; Gembloux Agro-Bio Tech Gembloux; Université de Liège; Institut des Sciences Chimiques de Rennes (ISCR); Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes); Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)
    • بيانات النشر:
      HAL CCSD
      Wiley
    • الموضوع:
      2017
    • Collection:
      Université de Rennes 1: Publications scientifiques (HAL)
    • نبذة مختصرة :
      International audience ; The aim of this work was the optimization of the enzyme hydrolysis of potato peel residues (PPR) for bioethanol production. The process included a pretreatment step followed by an enzyme hydrolysis using crude enzyme system composed of cellulase, amylase and hemicellulase, produced by a mixed culture of Aspergillus niger and Trichoderma reesei. Hydrothermal, alkali and acid pretreatments were considered with regards to the enhancement of enzyme hydrolysis of potato peel residues. The obtained results showed that hydrothermal pretreatment lead to a higher enzyme hydrolysis yield compared to both acid and alkali pretreatments. Enzyme hydrolysis was also optimized for parameters such as temperature, pH, substrate loading and surfactant loading using a response surface methodology. Under optimized conditions, 77 g L(-1) of reducing sugars were obtained. Yeast fermentation of the released reducing sugars led to an ethanol titer of 30 g L(-1) after supplementation of the culture medium with ammonium sulfate. Moreover, a comparative study between acid and enzyme hydrolysis of potato peel residues was investigated. Results showed that enzyme hydrolysis offers higher yield of bioethanol production than acid hydrolysis. These results highlight the potential of second generation bioethanol production from potato peel residues treated with onsite produced hydrolytic enzymes. © 2017 American Institute of Chemical Engineers Biotechnol. Prog., 33:397-406, 2017.
    • Relation:
      info:eu-repo/semantics/altIdentifier/pmid/27997079; hal-01518035; https://univ-rennes.hal.science/hal-01518035; https://univ-rennes.hal.science/hal-01518035/document; https://univ-rennes.hal.science/hal-01518035/file/Ben%20Taher%20et%20al.%20-%202016%20-%20Optimization%20of%20enzymatic%20hydrolysis%20and%20fermentat.pdf; PUBMED: 27997079
    • الرقم المعرف:
      10.1002/btpr.2427
    • الدخول الالكتروني :
      https://univ-rennes.hal.science/hal-01518035
      https://univ-rennes.hal.science/hal-01518035/document
      https://univ-rennes.hal.science/hal-01518035/file/Ben%20Taher%20et%20al.%20-%202016%20-%20Optimization%20of%20enzymatic%20hydrolysis%20and%20fermentat.pdf
      https://doi.org/10.1002/btpr.2427
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.466949E8