盐胁迫对小球藻胞外多糖积累及抗氧化性的影响
Effects of Salt Stress on Extracellular Polysaccharide Accumulation and Antioxidant Activity of Chlorella
冯庆玲 1叶招权 1林艺群 1张诗涵1
作者信息
- 1. 闽南科技学院生命科学与化学学院,福建南安 362311
- 折叠
摘要
文章研究盐胁迫对小球藻胞外多糖积累及抗氧化性的影响,并分析了其他生理指标.结果表明,在无胁迫条件下,小球藻胞外多糖的含量为0.065 3 mg/mL,过氧化氢清除率为11.96％,DPPH自由基清除率为0.98％;在盐胁迫质量浓度为6 g/L时,小球藻胞外多糖的含量达到0.114 3 mg/mL,过氧化氢清除率为44.57％,DPPH自由基清除率为3.25％,同时叶绿素含量8.7 mg/L,蛋白质含量162.62 μg/mL,丙二醛含量165.83 μmol/mL,为实验组中最高.这说明适宜浓度的盐胁迫会提高小球藻胞外多糖的积累及其他有效产物的合成.
Abstract
The effects of salt stress on extracellular polysaccharide accumulation and antioxidant activity of Chlorella were studied,and other physiological indexes were analyzed.The results indicate that the exopolysaccharide yield of Chlorella was 0.065 3 mg/mL,the scavenging rate of hydrogen peroxide is 11.96％,and the scavenging rate of DPPH free radical is 0.98％under no salt stress.When the saltconcentration is 6 g/L,the exopolysaccharide yield reached 0.114 3 mg/mL,the hydrogen peroxide clearance rate is 44.57％,and the DPPH free radical clearance rate is 3.25％.Meanwhile,the chlorophyll content is 8.7 mg/L,the protein content is 162.62 ug/mL,and the malondialdehyde content is 165.83 umol/mL,which are all the hingest in the experimental group.It indicates that theappropriate concentration of saltstress can improve the accumulation of extracellular polysaccharide and the synthesis of other effective products of Chlorella.
关键词
盐胁迫/小球藻/胞外多糖/抗氧化性Key words
salt stress/Chlorella/extracellular polysaccharide/antioxidant activity引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据