浙江农业学报

• 园艺科学 • 上一篇    下一篇

盐含量和高压灭菌对培养基酸碱度和凝固状态的影响

  

  1. (中国农业科学院 特产研究所,吉林 长春 130112)
  • 出版日期:2015-10-25 发布日期:2015-10-20

Effects of salt strength and autoclaving on pH and solidification of medium#br#

  1. (Institute of Special Wild Economic Animals and Plants, Chinese Academy of Agricultural Sciences, Changchun 130112, China)
  • Online:2015-10-25 Published:2015-10-20

摘要: 将MS,B5和W培养基配制成有机元素含量不变,无机盐含量分别为100%,75%,50%,25%,0的培养基,分别加入不同体积1 mol·L-1的NaOH溶液,测定高压灭菌前后培养基pH值,记录培养基凝固状态,研究不同盐含量MS,B5和W培养基高压灭菌后pH值与NaOH溶液添加量之间的定量关系,以及盐含量和酸碱度变化对培养基凝固状态的影响。结果表明,高压灭菌后,不同盐含量的培养基pH值与NaOH溶液添加量呈对数关系,培养基pH值降低幅度随盐含量增加而减小,调节培养基pH值所需NaOH溶液添加量随盐含量增加而增加,培养基硬度随NaOH溶液添加量增加而增加。

关键词: 培养基, 盐含量, 高压灭菌, 酸碱度, 凝固状态

Abstract: In the present study, MS, B5 and W media with unchanged organic elements and varied inorganic salt strength of 100%, 75%, 50%, 25% and 0, were selected as materials. With addition of different volumes of 1 mol·L-1 NaOH solution, the pH value of media before and after autoclaving were determined, and solidification state of media were examined to clarify the quantitative relationship between pH value and the added volume of NaOH solution, as well as effects of salt strength on pH value and solidification state of MS, B5 and W media after autoclaving. It was shown that there was a logarithmic quantitative relationship between the added volumes of NaOH solution and pH value of media after autoclaving. The media pH value decreased as salt strength increased, while the volume of NaOH solution needed for pH adjustment increased as salt strength increased. The hardness of media increased as the added volume of NaOH solution increased.

Key words: medium, salt strength, autoclaving, pH value, solidification state