Abstract
Carotenoids have good biological activity in antioxidant, anti-aging and scavenging harmful free radicals. In this study, we screened a strain that produced carotenoids, and selected a stress condition which significantly improved carotenoids content. The strain was identified as Phaffia rhodozyma PR106. Active oxygen generator TiO2 was the most significant factor to the carotenoids content of the P. rhodozyma. The content of carotenoids was 54.45 mg/g at 500 mg/L TiO2, which was about 1.25 times of the control and the proportion of carotenoids also changed from 1:9:16 to 1:8.5:12. Further, we determined the reactive oxygen species (ROS) in YEPD medium and P. rhodozyma, found that the ROS (H2O2, O2-, and HO•) was significantly increased at 500 mg/L TiO2 in YEPD medium compared with the control, but increased in P. rhodozyma under 1000 mg/L TiO2 treated. These results suggested that the increase in carotenoids was related to ROS in P. rhodozyma.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
