Fig. 4
From: Effects of pH on steam explosion extraction of acetylated galactoglucomannan from Norway spruce
MALDI-ToF MS Spectra of extract samples deacetylated with NaOH. In the control and sodium citrate pH 4.0 samples, GGM peaks are the main components, with small xylooligosaccharide peaks alongside GGM in the sodium citrate pH 4.0. In sodium citrate pH 5.0 and 6.0 the dominant peaks are the xylooligosaccharides and methylglucuronic acids. Xyl, xylose; H, hexose; MeGlcUA, methylglucuronic acid; Ac, acetylation