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Structural Changes of Oil Palm Empty Fruit Bunch (OPEFB) after Fungal and Phosphoric Acid Pretreatment

Isroi Isroi (Institutionen för kemi- och bioteknik) ; M. M. Ishola ; R. Millati ; S. Syamsiah ; M. N. Cahyanto ; Claes Niklasson (Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik) ; M. J. Taherzadeh
Molecules (1420-3049). Vol. 17 (2012), 12, p. 14995-15012.
[Artikel, refereegranskad vetenskaplig]

Oil palm empty fruit bunch (OPEFB) was pretreated using white-rot fungus Pleurotus floridanus, phosphoric acid or their combination, and the results were evaluated based on the biomass components, and its structural and morphological changes. The carbohydrate losses after fungal, phosphoric acid, and fungal followed by phosphoric acid pretreatments were 7.89%, 35.65%, and 33.77%, respectively. The pretreatments changed the hydrogen bonds of cellulose and linkages between lignin and carbohydrate, which is associated with crystallinity of cellulose of OPEFB. Lateral Order Index (LOI) of OPEFB with no pretreatment, with fungal, phosphoric acid, and fungal followed by phosphoric acid pretreatments were 2.77, 1.42, 0.67, and 0.60, respectively. Phosphoric acid pretreatment showed morphological changes of OPEFB, indicated by the damage of fibre structure into smaller particle size. The fungal-, phosphoric acid-, and fungal followed by phosphoric acid pretreatments have improved the digestibility of OPEFB's cellulose by 4, 6.3, and 7.4 folds, respectively.

Nyckelord: cellulose I., crystallinity, digestibility, FTIR spectra, hydrogen bond, oil palm empty fruit bunch, phosphoric acid, Pleurotus floridanus, pretreatment, white-rot fungi, solid-state fermentation, ft-ir spectroscopy, x-ray-diffraction, enzymatic-hydrolysis, biological pretreatment, infrared-spectroscopy, crystalline-structure, ethanol-production, biogas, production



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Denna post skapades 2013-02-07. Senast ändrad 2014-12-01.
CPL Pubid: 173221

 

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Institutioner (Chalmers)

Institutionen för kemi- och bioteknik (2005-2014)
Institutionen för kemi- och bioteknik, Kemisk reaktionsteknik (2005-2014)

Ämnesområden

Energi
Industriell bioteknik

Chalmers infrastruktur