Fig. 2From: Rapid determination of chemical composition and classification of bamboo fractions using visible–near infrared spectroscopy coupled with multivariate data analysisChemical contents predicted by visible–near infrared spectra vs. those measured by wet chemistry: a non-pretreatment (cellulose, xylan, and lignin); b first derivative pretreatment (cellulose, xylan, and lignin); c non-pretreatment (glucose and xylose); and d first derivative pretreatment (glucose and xylose)Back to article page