The goal of this project was to determine if soaking the sweetgum bark in 85°C water prior to dilute acid pretreatment and enzymatic hydrolysis would increase the saccharification, and if the wash waters contained biologically active compounds. Soaking resulted in 20% and 5% increases in xylose and glucose recoveries compared to non-soaked bark. These extracts were tested for antioxidant properties. Sweetgum bark yielded 1.7 mg g-1 of shikimic acid. Extracts also contained gallic acid, which is a documented antioxidant. Gallic acid reference standard and the sweetgum bark extract were further analyzed for antioxidant effects using the in-vitro Cu2+ induced low density lipoprotein oxidation (LDL) thiobarbituric reactive substance (TBARS) assay. Sweetgum bark extract, 12.5 mg ml-1, and gallic acid, 75 µM, inhibited LDL oxidation by 90%. These results indicated that bark extracts contain compounds, including gallic acid, that display potent antioxidant effects. In addition to recovering phytochemicals, the 85°C wash step also increases xylose recovery. These results demonstrate the possibility of devising a biorefinery operation that could produce biobased fuels and high value phytochemicals from feedstock.