title: Potential of Ceiba pentandra (L.) Gaertn. (kapok) fiber as a resource for second generation bioethanol: parametric optimization and comparative study of various pretreatments prior enzymatic saccharification for sugar production.
abstract: Various pretreatments on Ceiba pentandra (L.) Gaertn. (kapok) fiber prior to enzymatic hydrolysis for sugar production were optimized in this study. The optimum conditions for water, acid, and alkaline pretreatments were 170°C for 45 min, 120°C for 45 min in 1.0% (v/v) H2SO4 solution and 120°C for 60 min in 2.0% (v/v) NaOH solution, respectively. Among the three pretreatments, the alkaline pretreatment achieved the highest total glucose yield (glucose yield calculated based on the untreated fiber) (38.5%), followed by the water (35.0%) and acid (32.8%) pretreatments. As a result, the relative effectiveness of the pretreatment methods for kapok fiber was verified as alkali>water>acid at the condition stated.
authors.affiliation: School of Industrial Technology, Universiti Sains Malaysia, Minden 11800, Penang, Malaysia.
authors.forename: Ying Ying
authors.initials: YY
authors.lastname: Tye
authors.forename: Keat Teong
authors.initials: KT
authors.lastname: Lee
authors.forename: Wan Nadiah Wan
authors.initials: WN
authors.lastname: Abdullah
authors.forename: Cheu Peng
authors.initials: CP
authors.lastname: Leh
mesh_terms: D000468:Alkalies / Q000494:pharmacology; D056804:Biofuels / Q000032:analysis*; D001709:Biotechnology / Q000379:methods*; D050260:Carbohydrate Metabolism / Q000187:drug effects; D002241:Carbohydrates / Q000096:biosynthesis*; D035164:Ceiba / Q000737:chemistry*; D002480:Cellulase / Q000378:metabolism*; D000431:Ethanol / Q000378:metabolism*; D006868:Hydrolysis / Q000187:drug effects; D013464:Sulfuric Acids / Q000494:pharmacology; D014867:Water / Q000494:pharmacology
chemical_list: D000468:Alkalies; D056804:Biofuels; D002241:Carbohydrates; D013464:Sulfuric Acids; D014867:Water; D000431:Ethanol; D002480:Cellulase; C033158:sulfuric acid