摘要
采用乙醇提取、溶剂萃取法从芦苇中分离出 2组能抑制蛋白核小球藻生长的化感物质 .该 2组化感物质对蛋白核小球藻的半效应浓度 (EC50 )分别为 0 6 8mg/L和 2 6 5mg/L .将前者用碱性氧化铝层析柱分离得到一组抑藻活性更强的化感物质和一组能够促进蛋白核小球藻生长的化感物质 :前者对蛋白核小球藻的EC50 为 0 5 0mg/L ,是目前报道的抑藻能力最强的化感物质 ;后者在浓度为 0 6 3mg/L时能显著促进蛋白核小球藻的生长 .
Two fractions of secondary metabolites which inhibited the growth of green alga Chlorella pyrenoidosa, was isolated by several separation techniques from the ethanol extract of the macrophyte, Phragmites communis Tris. The EC 50 of the two fractions on C. pyrenoidosa were 0 68mg/L(the fraction of acidic solvent) and 2 65mg/L(the fraction of alkaline solvent), respectively. Further purification of the allelochemicals in the acidic solvent by alkaline aluminum oxide column chromatography revealed that this fraction containing inhibiting allelochemicals and stimulating allelochemicals The inhibiting allelochemicals showed more inhibitory effect and the EC 50 was 0 50mg/L. The result suggests that allelochemicals in P. communis can be used as an algae inhibitor.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2004年第5期89-92,共4页
Environmental Science
基金
国家重点基础研究发展规划 ( 973 )项目 (G1990 45 711)
关键词
芦苇
蛋白核小球藻
抑制
化感作用
Chlorella pyrenoidosa
Phragmites communis Tris.
inhibition
allelopathy
