Figure 5
From: Immune enhancement activities of silk lutein extract from Bombyx mori cocoons
Fingerprints of silk lutein extract, marigold lutein extract and standard lutein (Sigma). (A) UV/VIS absorption spectra (B) HPLC chromatograms at 445 nm. HPLC was conducted using a LiChrospher®100 reversed-phase C30 column as stationary and acetonitrile/methanol (9:1, v/v) and ethyl acetate as mobile phases. Peaks: 1, (13-Z)-lutein; 2, (13′-Z)-lutein; 3, (all-E)-lutein; 4, (9-Z)-lutein and 5, (9′-Z)-lutein.