几种因素对悬浮培养人参细胞生长和皂苷积累的影响

Effects of several factors on cell growth and ginsenoside accumulation of Panax ginseng suspension culture

为了完善人参细胞悬浮培养体系,论文研究了人参细胞悬浮培养的动态,探明了培养瓶瓶盖透气滤膜的有无,摇床转速和接种量对人参细胞生长和皂苷积累的影响。结果表明人参细胞悬浮培养过程中,细胞生物量和皂苷产量在培养20 d时达到最大值,因此,可将培养期定为20 d。培养瓶盖上有透气滤膜时有利于人参细胞生长和皂苷合成;悬浮培养时摇床转速影响细胞生长但对皂苷合成无影响,转数为120 r·min-1时,皂苷生产量最高。每个培养瓶接种6 g鲜重的细胞时,细胞生长和皂苷积累明显好于其他接种量,总皂苷质量分数达12.8 mg·g-1DW,生产量达146.6 mg·L-1。

To improve cell suspension culture system of Panax ginseng, the dynamic of cell growth and medium consumption were studied, and the effects of filter on the culture vessel, revolution number, and inoculation density on cell growth and ginsenoside accumulation were also investigated. The maximum cell growth and ginsenoside accumulation was found on the 20th days of suspension culture, therefore, 20 days were confirmed as a suitable culture period for mass production of ginsenoside. Cell growth and ginsenoside content were promoted when the culture vessel had a ventilated filter. Revolution speed during suspension culture affected cell growth, but not ginsenoside content, a peak of ginsenoside productivity was found in the treatment of 120 r · min-1. Inoculation density also in- fluenced cell growth and ginsenoside accumulation, inoculation density of 6 g was better than other inoculation densities, the ginsen- oside content and productivity were up to 12.8 mg · g-1 DW and 146.6 mg ·L-1, respectively.