Characterization and singlet oxygen quenching activity of (3R)-3-hydroxy-4-ketotorulene and (3R)-3-hydroxy-4-keto-γ-carotene isolated from the yeast Xanthophyllomyces dendrorhrous.
Structures of (3R)-3-hydroxy-4-ketotorulene (1) and (3R)-3-hydroxy-4-keto-γ-carotene (2) isolated from the yeast Xanthophyllomyces dendrorhrous were fully characterized by FAB MS, ¹H NMR, ¹³C NMR and CD spectroscopic data. Both 1 and 2 showed potent singlet oxygen (¹O₂) quenching activity as that of astaxanthin and lycopene, which were well known strong ¹O₂ quencher.
Research Institute for Production Development, Division of Food Function and Chemistry, Kyoto, Japan. maoka@mbox.kyoto-inet.or.jp
Takashi
T
Maoka
Tetsuji
T
Etoh
Ayako
A
Osawa
Kazutoshi
K
Shindo
D001487:Basidiomycota / Q000737:chemistry*; D002338:Carotenoids / Q000737:chemistry / Q000302:isolation & purification*; D002942:Circular Dichroism; D007659:Ketones / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D026082:Singlet Oxygen / Q000737:chemistry*
D007659:Ketones; D026082:Singlet Oxygen; D002338:Carotenoids