氨氮质量浓度和温度对雨生红球藻生长特性的影响

研究了不同氨氮（氯化铵）浓度（0.05~0.8 g/L）和生长温度（22、25、28 ℃）对雨生红球藻生长特性的影响，以及不同胁迫温度（30、35、38 ℃）对虾青素积累的影响。测定了不同培养条件下雨生红球藻的OD值、干重、叶绿素以及虾青素含量。研究结果表明：以氯化铵为氮源的条件下，雨生红球藻更适宜在低氨氮浓度下生长，适宜的氨氮质量浓度是0.1 g/L，最适生长温度为22 ℃，以高温胁迫时，最佳胁迫温度为35 ℃。
The effects on the growth characteristics of Heamatococcus lacustris of different ammonia concentrations（0.05~0.8 g/L） and different growth temperatures（22、25、28 ℃） and the effects of stress temperatures（30，35，38 ℃）on the astaxathin accumulation were studied in this paper. The main parameters OD，dry weight，chlorophyll a and astaxathin content were determined. The results show that Heamatococcus lacustris grows relatively better under lower concentration of ammonia nitrogen when using NH4Cl as nitrogen source. Its suitable growth conditions are as follows：temperature：22 ℃、NH4Cl：0.1 g/L，whereas the suitable stress temperature is 35 ℃