Journal article
Process options for conversion of Agave tequilana leaves into bioethanol
Industrial Crops and Products, Vol.84, pp.263-272
01/06/2016
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Source: InCites
Abstract
This paper reports on mild acid pretreatment options for the conversion of Agave tequilana leaves into composite sugars for ethanol fermentation. The effect of five different pretreatment conditions (time, temperature and acid concentrations) were assessed in terms of cellulose digestibility, hemicellulose solubilisation and lignin content in leaves of 1.25 years old A. tequilana plants from Rockhampton and 2.5 year plants from Kalamia. Dilute acid pretreatment and enzyme saccharification of A. tequilana leaf bagasse significantly improved total glucose recovery. A recovery of 273 mg/g (70% theoretical) was attained when the bagasse was pretreated with 2.0% H2SO4 for 60 min at 121 degrees C and saccharified with 6% (w/w) CTec 2. Saccharomyces cerevisiae efficiently fermented crude A. tequilana bagasse and juice hydrolysates within 13 h and 7h respectively, yielding up to 38.6 g/L and 12.4g/L. This corresponds to glucose to ethanol conversion rate of 68 and 61% for A. tequilana leaf bagasse and juice, respectively. With further developments, including fermentation of C5 sugars and inulinase saccharification of juices (release of fructose), this process could deliver greater yields, reinforcing its potential as a biofuel feedstock.
Details
- Title
- Process options for conversion of Agave tequilana leaves into bioethanol
- Creators
- Deepa Rijal - Central Queensland UniversityTony Vancov - NSW Dept Primary Ind, 1243 Bruxner Highway, Wollongbar, NSW 2477, AustraliaShane McIntosh - NSW Department of Primary Industries, WollongbarNanjappa Ashwath - Cent Queensland Univ, Sch Med & Appl Sci, Rockhampton, Qld 4702, AustraliaGrant A Stanley - Central Queensland University
- Publication Details
- Industrial Crops and Products, Vol.84, pp.263-272
- Publisher
- Elsevier BV
- Number of pages
- 10
- Grant note
- Central Queensland University NSW Department of Primary Industries
- Identifiers
- 991013015698602368
- Copyright
- (C) 2016 Elsevier B.V. All rights reserved.
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article