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Ethanol production from agroindustrial biomass using a crude enzyme complex produced by Aspergillus niger

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  • Rocha, Nattácia Rodrigues de Araujo Felipe
  • Barros, Maria Aparecida
  • Fischer, Janaína
  • Coutinho Filho, Ubirajara
  • Cardoso, Vicelma Luiz

Abstract

This study investigates ethanol production from simultaneous fermentation and saccharification (SFS) and separated hydrolysis and fermentation (SHS) using enzyme complexes produced by Aspergillus niger strains (ATCC 16404, ATCC 1057, ATCC 9029). The enzyme complexes were produced by solid-state fermentation (SSF) on inexpensive and readily available agroindustrial products: rice byproduct (composed of AFEX-treated rice rust and rice bran), whey and sugarcane bagasse. The ethanol was produced by Saccharomyces cerevisiae Y904 using whey and rice byproduct as the substrate and the enzyme complex produced by A. niger. The best result for solid-state fermentation (40 U/g of dry substrate, A. niger ATCC 16404) was obtained in a 0.5 L rotating drum bioreactor at 40 °C filled half filled with solid biomass composed of rice byproduct (86% wt/wt), whey (12% wt/wt) and CaCl2 (2.0% wt/wt). The best result for ethanol fermentation (11.7 g/L of ethanol) was obtained after 12 h of SFS at pH 4.5 and 35 °C. A comparative study of ethanol production by Trichoderma reesei CCT 2768 and A. niger ATCC 16404 complexes under the same optimised SFS and SSF conditions was also performed, revealing that ethanol production by the A. niger enzyme complex was 2.25 times higher than that by T. reesei. These findings suggest that the ethanol production using crude enzymatic complexes produced by A. niger and agroindustrial biomass described in this paper is very promising in terms of disposal of the whey produced by cheese-making and other dairy food processing.

Suggested Citation

  • Rocha, Nattácia Rodrigues de Araujo Felipe & Barros, Maria Aparecida & Fischer, Janaína & Coutinho Filho, Ubirajara & Cardoso, Vicelma Luiz, 2013. "Ethanol production from agroindustrial biomass using a crude enzyme complex produced by Aspergillus niger," Renewable Energy, Elsevier, vol. 57(C), pages 432-435.
    • Handle: RePEc:eee:renene:v:57:y:2013:i:c:p:432-435
    DOI: 10.1016/j.renene.2013.01.053
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    Cited by:

    1. Lopes, Verônica dos Santos & Fischer, Janaína & Pinheiro, Tais Magalhães Abrantes & Cabral, Bruna Vieira & Cardoso, Vicelma Luiz & Coutinho Filho, Ubirajara, 2017. "Biosurfactant and ethanol co-production using Pseudomonas aeruginosa and Saccharomyces cerevisiae co-cultures and exploded sugarcane bagasse," Renewable Energy, Elsevier, vol. 109(C), pages 305-310.
    2. Carrillo-Nieves, Danay & Rostro Alanís, Magdalena J. & de la Cruz Quiroz, Reynaldo & Ruiz, Héctor A. & Iqbal, Hafiz M.N. & Parra-Saldívar, Roberto, 2019. "Current status and future trends of bioethanol production from agro-industrial wastes in Mexico," Renewable and Sustainable Energy Reviews, Elsevier, vol. 102(C), pages 63-74.
    3. Pulidindi, Indra Neel & Kimchi, Baruchi B. & Gedanken, Aharon, 2014. "Can cellulose be a sustainable feedstock for bioethanol production?," Renewable Energy, Elsevier, vol. 71(C), pages 77-80.

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