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. 2014 Apr 12;7:60. doi: 10.1186/1754-6834-7-60

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Copyright © 2014 Benjamin et al.; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Correlations between the highest ethanol concentration and lignin, ratio of xylose: arabinose, glucose yield. (A) Relationship between lignin and ethanol concentration, (B) Relationship between the ratio of xylose to arabinose and ethanol concentration, (C) Relationship between glucose yield after enzymatic hydrolysis and ethanol concentration. Circle and rectangle markers represent ethanol concentration at low and high enzymes loadings for batch process, whereas triangular markers show the ethanol concentration during fed-batch process.