| 摘要: |
| 在20、40、80、120、200 μmol/m2•s光照强度下，研究了光照梯度对海黍子Sargassum muticum的生长及藻体部分生化指标的影响。结果表明，在80~200 μmol/m2•s光照范围内时，海黍子的特定生长率都比较高，且无显著差异，光照低于80 μmol/m2•s后，生长率下降，显示了海黍子适宜较高光强的特性。叶绿素a、可溶性蛋白、可溶性糖在光照20 μmol/m2•s下含量最高。褐藻多酚含量在光照200 μmol/m2时比其余光照条件下增加明显。此特性对于从海黍子中提取褐藻多酚天然产物具有一定的指导意义。 |
| 关键词: 海黍子 光照 生长 化学组成 |
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| 基金项目:国家海洋公益性行业科研专项课题（201305043；201105008-2）、国家863计划（2012AA10A413）和海洋科技推进平台与运行项目 |
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| Impact of irradiances on growth and biochemical composition of Sargassum muticum |
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| Abstract: |
| The main effects of irradiances（20,40,80,120,200 μmol/m2•s） on growth and biochemical composition of Sargassum muticum were studied indoors.Higher growth rates of S. muticum were observed at irradiance of 80~200 μmol/m2•s, and the maximum content of some biochemicals (chlorophyll-a, chlorophyll-b, soluble protein, and soluble sugar) were obtained at the lowest irradiance (20 μmol/m2•s). The rapid increase of algae polyphenols was observed at the highest irradiance (200 μmol/m2•s).The finding has important implication for the extraction of natural polyphenols. |
| Key words: Sargassum muticum Irradiances Growth Biochemical composition |
