In vitro study reveals enhanced UV-B photoprotection from C50 carotenoids in Antarctic Arthrobacter, highlighting their potential for natural dermo-cosmetics.
Key Points
To evaluate carotenoid production in Antarctic soil Actinomycetota strains and assess their photoprotective efficacy against UV-B radiation.
Screened 20 Actinomycetota strains isolated from King George Island soils in Antarctica for carotenoid biosynthesis.
Conducted genomic sequencing, chemical characterization of extracts, and scanning electron microscopy on the top-producing Arthrobacter strain LAPM80 under UV-B irradiation.
Identified Arthrobacter sp. LAPM80 harboring biosynthetic genes for C50 carotenoids, primarily producing decaprenoxanthin and sarcinaxanthin.
Demonstrated enhanced UV-B resistance in the carotenoid-rich stationary phase, with scanning electron microscopy showing minimal bacterial surface damage after radiation exposure.