AN ALLELOPATHIC FATTY-ACID FROM THE BROWN ALGA CLADOSIPHON-OKAMURANUS
AN ALLELOPATHIC FATTY-ACID FROM THE BROWN ALGA CLADOSIPHON-OKAMURANUS
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DOI：
10.1016/0031-9422(88)84084-6
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发表时间：
1988-01-01
期刊：
影响因子：
3.8
通讯作者：
CHIHARA, M
中科院分区：
文献类型：
--
作者：
KAKISAWA, H;ASARI, F;CHIHARA, M
从褐藻（Cladosiphon okamuranus）甲醇提取物中分离出一种化感物质。通过对紫斑卟啉（Porphyra yezoensis）和赤岛异食虫（Heterosigma akashhiwo）螺孢子的生物测定，对活性物质的提取和纯化进行了监测。化合物经鉴定为6Z、9Z、12Z、15z -十八碳四烯酸，并对36种微藻进行了抑菌活性测定。许多真核生物在5ppm时受到影响，但原核生物在25ppm时不受影响。四不饱和脂肪酸以1ppm的浓度杀灭有毒的红潮浮游生物，如古查托纳菌。
An allelopathic substance was isolated from the methanol extract of the brown alga, Cladosiphon okamuranus. Extraction and purification of the active substance was monitored by bioassays against the conchospores of Porphyra yezoensis and Heterosigma akashiwo. The compound was identified as 6Z, 9Z, 12Z, 15Z-octadecatetraenoic acid and its activity was then tested against 36 species of microalage. Many of eukaryotes tested were affected at 5 ppm, but prokaryotes were unaffected at 25 ppm. The tetraunsaturated fatty acid exterminated toxic red tide planktons such as Chattonella antiqua at 1 ppm concentrations.