Structural changes of oil palm empty fruit bunch (OPEFB) after fungal and phosphoric acid pretreatment

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, an...

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Bibliographic Details
Published in:Molecules (Basel, Switzerland) Switzerland), 2012-12, Vol.17 (12), p.14995-15012
Main Authors: Isroi, Ishola, Mofoluwake M, Millati, Ria, Syamsiah, Siti, Cahyanto, Muhammad N, Niklasson, Claes, Taherzadeh, Mohammad J
Format: Article
Language:English
Subjects:
Acids
Arecaceae - chemistry
Basidiomycota
biogas
biological pretreatment
Biomass
Carbohydrates
Carbohydrates - chemistry
Cellulose
Cellulose - chemistry
cellulose I
cellulose Ib
crystalline-structure
crystallinity
Dietary Fiber
digestibility
Engineering
Environmental impact
enzymatic-hydrolysis
Enzymes
ethanol-production
Fruit - chemistry
ft-ir spectroscopy
FTIR spectra
Fungi
hydrogen bond
Hydrogen Bonding - drug effects
Hydrolysis
infrared-spectroscopy
Investigations
Lignin
Lignin - chemistry
Lignocellulose
Morphology
oil palm empty fruit bunch
Palm Oil
Particle size
phosphoric acid
Phosphoric Acids - pharmacology
Plant Oils - chemistry
Pleurotus floridanus
pretreatment
production
solid-state fermentation
Spectroscopy, Fourier Transform Infrared
white-rot fungi
x-ray-diffraction
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Summary: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.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules171214995