Guarana (Paullinia cupana) Extract Protects Caenorhabditis elegans Models for Alzheimer Disease and Huntington Disease through Activation of Antioxidant and Protein Degradation Pathways

Figure 4

Effects of guarana hydroalcoholic extract (GHE) on bacterial growth. LB media supplemented with either 10 or 50 mg/mL GHE was used for bacterial growth. Escherichia coli OP50 growth was monitored by measuring absorbance at 600 nm for 5 h. Data are presented as (). All OD readings at 600 nm were normalized to the OD of controls at time zero. No significant differences between groups were observed at any time point, as determined by a two-tailed Student -test.