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Figure 3 | Biotechnology for Biofuels

Figure 3

From: How effective are traditional methods of compositional analysis in providing an accurate material balance for a range of softwood derived residues?

Figure 3

Recovery of original hemicellulosic sugars after the steam pretreatment at two different severities (200 °C, 5 minutes and 4% SO 2; 180° C, 5 minutes and 4% SO 2 ). *Water soluble component after the pretreatment. ** Water insoluble cellulosic component after the steam pretreatment. Hemicellulose represents the sum of arabinan, galactan, xylan and mannan. The sugars present in the water soluble components of 180°C and 200°C pretreatments had 53-80% and 5-45% oligomeric sugars respectively. The error bars represent the standard deviations of triplicate analysis.

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