Fig. 3From: Validation study on the geometric isomers from bulbs of Allium fistulosum and their conversionHPLC chromatograms of four trans standards; 5: 100, 7: 140, 9: 100, and 10: 70 µg/mL (a), and converted standards after 96 h of UV light (254 nm) exposure .(b) The Gyeong san sample before UV exposure (c, 125 mg/mL), and the sample after 96 h of UV (254 nm) exposure (d)Back to article page