Abstract:
:Of several types of chemical surfactants and biosurfactants, only the culture broth of Bacillus subtilis C1 containing surfactin at 10 mg l(-1) completely inhibited the growth of Microcystis aeruginosa, a bloom-forming cyanobacterium in highly eutrophic lakes. The broth with 10 mg surfactin l(-1) also removed 85% of the maximally grown M. aeruginosa (chlorophyll-a concentration, 1000 microg l(-1)) within 2 d, and the removal efficiency was enhanced by Ca2+ over 1 mM. The growth of Anabaena affinis, another bloom-forming cyanobacterium, was also inhibited about 70% with surfactin at 10 mg l(-1) broth. However, the effect of the broth was delayed over 3 d in the green algae, Chlorella vulgaris and Scenedesmus sp., and was negligible in a diatom, Navicula sp., indicating the potential for the selective control of cyanobacterial blooms.
journal_name
Biotechnol Lettjournal_title
Biotechnology lettersauthors
Ahn CY,Joung SH,Jeon JW,Kim HS,Yoon BD,Oh HMdoi
10.1023/a:1024508927361keywords:
subject
Has Abstractpub_date
2003-07-01 00:00:00pages
1137-42issue
14eissn
0141-5492issn
1573-6776journal_volume
25pub_type
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