Paper Title :Potential Fermentation Inhibitors formed during Dilute-Acid Hydrolysis of Oil Palm Lignocellulosic Wastes and their Detoxification Methods
Author :Sirinad Theppaya, Piyarat Boonsawang, Natthanon Phaiboonsilpa, Oramas Suttinun
Article Citation :Sirinad Theppaya ,Piyarat Boonsawang ,Natthanon Phaiboonsilpa ,Oramas Suttinun ,
(2017 ) " Potential Fermentation Inhibitors formed during Dilute-Acid Hydrolysis of Oil Palm Lignocellulosic Wastes and their Detoxification Methods " ,
International Journal of Advances in Science, Engineering and Technology(IJASEAT) ,
pp. 12-17,
Volume-5, Issue-3, Spl. Iss-2
Abstract : Empty fruit bunches (EFBs) are lignocellulosic wastes from palm oil industry. Due to their low cost and domestic
availability, they are potential raw materials to be used for bioethanol production. This study aimed to determine the
potential fermentation inhibitors formed during acid hydrolysis of the EFBs and to study the efficiency of their detoxification
methods. The dilute-acid hydrolysis process was performed using 2% and 6% sulfuric acid at 121oC for 30-60 min. The
results showed that various sugars including glucose, mannose, galactose, rhamnose, xylose and arabinose were found in the
hydrolysate of EFBs. The maximum total sugars obtained were 19.77 g/L when the EFBs were hydrolyzed with 6% sulfuric
acid at 121oC for 45 min. The hydrolysates contained xylose as a major sugar, followed by arabinose, and glucose. The
inhibitors formed during hydrolysis stage were acetic acid, furfural and phenolic compounds. The levels of all inhibitors
increased with the increased reaction time and acid concentration. The detoxification methods, namely evaporation, activated
charcoal treatment and over-liming could effectively remove the inhibitors but in the different extents.
Type : Research paper
Published : Volume-5, Issue-3, Spl. Iss-2
DOIONLINE NO - IJASEAT-IRAJ-DOIONLINE-10659
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