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Pregled bibliografske jedinice broj: 979872

Bioethanol Production from Dilute-acid Pre- treated Wheat Straw Liquor Hydrolysate by Genetically Engineered Saccharomyces cerevisiae


Marđetko, Nenad; Novak, Mario; Trontel, Antonija; Grubišić, Marina; Galić, Maja; Šantek, Božidar
Bioethanol Production from Dilute-acid Pre- treated Wheat Straw Liquor Hydrolysate by Genetically Engineered Saccharomyces cerevisiae // Chemical and biochemical engineering quarterly, 32 (2018), 4; 483-499 doi:10.15255/CABEQ.2018.1409 (međunarodna recenzija, članak, znanstveni)


Naslov
Bioethanol Production from Dilute-acid Pre- treated Wheat Straw Liquor Hydrolysate by Genetically Engineered Saccharomyces cerevisiae

Autori
Marđetko, Nenad ; Novak, Mario ; Trontel, Antonija ; Grubišić, Marina ; Galić, Maja ; Šantek, Božidar

Izvornik
Chemical and biochemical engineering quarterly (0352-9568) 32 (2018), 4; 483-499

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Dilute acid pre-treatment ; high-pressure reactor ; wheat straw ; xylose utilisation ; bioethanol ; genetically engineered Saccharomyces cerevisiae

Sažetak
Sustainable recycling of lignocellulosic biomass includes utilization of all carbohydrates present in its hydrolysates. Since wheat straw is a xylose-rich raw material, utilization of xylose from obtained liquid part (liquor) of hydrolysates improves overall bioprocess efficiency. In this work, dilute acid pre-treatment of wheat straw was performed in high-pressure reactor at different temperatures (160 °C – 200 °C), residence times (1 min – 10 min), and acids (H2SO4 and H3PO4) concentrations. During dilute acid pre- treatment, hemicellulose is degraded to pentose sugars that cannot be used by industrial ethanol- producing yeasts. Therefore, genetically engineered Saccharomyces cerevisiae strain that can utilize xylose was used. Fermentations were performed on different xylose-rich liquor wheat straw hydrolysates in shake-flasks and in horizontal rotating tubular bioreactor. The efficiency of fermentations carried out in shake flasks using xylose- rich liquor wheat straw hydrolysates were in the range of 19.61 – 74.51 %. However, the maximum bioprocess efficiency (88.24 %) was observed during fermentation in the HRTB on the liquor wheat straw hydrolysate obtained by pre- treatment with 2 % w/w phosphoric acid.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2013-11-9158 - Održiva proizvodnja bioetanola i biokemikalija iz otpadnih poljoprivrednih lignoceluloznih sirovina (Božidar Šantek, )

Ustanove
Prehrambeno-biotehnološki fakultet, Zagreb,
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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