Due to earlier experiments the brownish color is known for impure products in our process. A purity analysis using the phenol sulfuric acid assay resulted in 62.4 % (hot water glycan) and 86.5 % (cold water glycan). Considering the cold water glycans 86.5 % of the 52.1 mg precipitated crude product can be assigned to glycans which lead to a yield increase of 4.5 %. Compared to the 5 % glycans already obtained from the pre-extraction with subcritical water we achieved a yield increase of 90 %. Further, the molecular weight distribution of the precipitated glycans is analyzed.