Characterization and Singlet Oxygen Quenching Activity of (3R)-3-Hydroxy-4-Ketotorulene and (3R)-3-Hydroxy-4-Keto-γ- Carotene from the Yeast Xanthophyllomyces dendrorhrous

Takashi Maoka; Tetsuji Etoh; Ayako Osawa; Kazutoshi Shindo

doi:10.5650/jos.61.401

General Subjects

Characterization and Singlet Oxygen Quenching Activity of (3R)-3-Hydroxy-4-Ketotorulene and (3R)-3-Hydroxy-4-Keto-γ- Carotene from the Yeast Xanthophyllomyces dendrorhrous

Takashi Maoka, Tetsuji Etoh, Ayako Osawa, Kazutoshi Shindo

Author information

Keywords: (3R)-3-hydroxy-4-ketotorulene, (3R)-3-hydroxy-4-keto-γ-carotene, stereochemistry, singlet oxygen quenching activity, Xanthophyllomyces dendrorhrous

JOURNAL FREE ACCESS

2012 Volume 61 Issue 7 Pages 401-406

DOI https://doi.org/10.5650/jos.61.401

Details

Abstract

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.

Corresponding author

Register with J-STAGE for free!