磁场对红酵母的生长及类胡萝卜素合成的影响

Effects of Magnetic Field on Rhodotorula sp.RG-98 Growth and Biosynthesis of Carotenoid

考察直流电磁场对类胡萝卜素产生前红酵母RG-98的生长及代谢的影响。结果表明,不同的磁场强度、处理时间及处理方式会产生不同的生物效应。将液体种子和发酵培养基一起置于0.10T电磁场处理2h,能使色素的发酵产量提高25％。比较经磁场处理与未经处理的发酵过程,发现磁场处理提高了红酵母对糖的代谢速率,并且在发酵后期促进生物量和色素含量持续地增加。

The effects of static magnetic field (SMF) on the growth and metabolism of Rhodorula. sp. RG-98 cells were examined. The results showed that different biological effects were generated by different magnetic intensity and different culture methods. The yields of carotenoid increased 25% when an external 0.10T SMF were applied for two hours in the cell cultures and fermentation medium. In contrast with the control fermentation experiment in which no magnetic field was applied.it was found that the metabolism rate of sugar was promoted and in the later stage of fermentation the yields of biomass and carotenoid were also enhanced.