食品科学 ›› 2007, Vol. 28 ›› Issue (1): 94-98.

• 工艺技术 • 上一篇    下一篇

磁场处理对螺旋藻生长及胞外多糖的影响

 郑必胜, 郭祀远, 尤珊   

  1. 华南理工大学轻化工研究所; 华南理工大学轻化工研究所 广东广州510640; 广东广州510640;
  • 出版日期:2007-01-15 发布日期:2011-12-31

Effects of Magnetic Treatment on Biomass and EPS of Spirulina

 ZHENG  Bi-Sheng, GUO  Si-Yuan, YOU  Shan   

  1. Institute of Light Industry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • Online:2007-01-15 Published:2011-12-31

摘要: 系统研究外加磁场作用对螺旋藻生长及其胞外多糖分泌的影响。研究发现,在40kA/m以下范围内,磁处理有利于螺旋藻细胞生长及生物量的积累,并当磁场强度为24kA/m时比生长速率最高。磁场强度高于40kA/m后螺旋藻的生长受到一定抑制,达到80kA/m以上时生长受到明显抑制,400kA/m以上则基本停止生长。在较高的磁场强度下螺旋藻生长缓慢但却有利于螺旋藻胞外多糖的分泌。螺旋藻对数生长期进行磁处理效果最好。

关键词: 螺旋藻, 培养, 磁场, 胞外多糖

Abstract: The effects of magnetic treatment on the biomass and excreting of exo-polysaccharides(EPS) of Spirulina were studied systematically. It proved that a lower magnetic intensity(≤40kA/m) is good for improving the biomass of Spirulina but the growth rate restrained as magnetic intensity higher than 40kA/m. 24kA/m is the optimum condition for improving the growth rate and the maximum-cell-concentration. The higher the magnetic intensity, the stronger the restraint is when the magnetic intensity is higher than 80kA/m. The growth stops almost when the magnetic intensity is higher than 400kA/m. Although the growth of Spirulina is restrained at the higher intensity magnetic treatment, it could stimulate the excretion of EPS obviously. It was also found that the optimum magnetic effect takes place in logarithmic growth phase.

Key words: Spirulina, cultivation, magnetic field, EPS of Spirulina