Influence of oxidative stress and grains on sclerotial biomass and carotenoid yield of Penicillium sp. PT95.
Oxidative stress and grains were evaluated for carotenoid production by solid-state fermentation using Penicillium sp. PT95. When the fungus was grown at high oxidative stress, its sclerotial biomass and carotenoid content in sclerotia increased significantly with respect to low oxidative stress (P < 0.01). High oxidative stress also caused a statistically significant increase in carotenoid yield as compared with low oxidative stress (P < 0.01). Both the sclerotial biomass and the amount of carotenoid accumulated in sclerotia of strain PT95 were strongly dependent on the grain medium used. Among the grain media tested under high oxidative stress, buckwheat medium gave the highest content of carotenoid in sclerotia (828 microg/g dry sclerotia), millet medium gave respectively the highest sclerotial biomass (12.69 g/100 g grain) and carotenoid yield (10.152 mg/100 g grain).
Chen
Shu-Jun
SJ
School of Life Science and Technology, Shanxi University, Taiyuan, China.
Wang
Qi
Q
Han
Jian-Rong
JR
D018533:Biomass; D002338:Carotenoids / Q000096:biosynthesis*; D003470:Culture Media; D002523:Edible Grain / Q000378:metabolism; D005285:Fermentation; D007218:Industrial Microbiology; D018384:Oxidative Stress; D010407:Penicillium / Q000378:metabolism*
D003470:Culture Media; D002338:Carotenoids