Fig. 4
From: Upregulation of brain-derived neurotrophic factor by Shiikuwasha (Citrus depressa Hayata)
A Chemical structures of hesperidin and nobiletin. B HPLC chromatograms of Shiikuwasha extracts (peel, pulp, and seeds: 4.0 mg/mL) and standard solution (hesperidin and nobiletin: 25 nmol/L). Retention times of hesperidin and nobiletin were 9.5 and 16.4Â min, respectively. C Peak areas of hesperidin and nobiletin from Shiikuwasha extracts