Xylose and arabinose levels were detected on an Aminex HPX-87H column (BioRad, Hercules, CA, USA) by high-performance liquid chromatography (HPLC) with a refractive index detector (Shimadzu, Kyoto, Japan). The mobile phase, flow rate and temperature were 5 mM H2SO4, 0.6 mL/min and 60 °C, respectively [22 (link)].
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