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Antibiotic Activity of the Chrysophyte Ochromonas malhamensis
Author(s) -
HANSEN JENS AAGE
Publication year - 1973
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1973.tb03098.x
Subject(s) - bacillus subtilis , bacillus megaterium , staphylococcus aureus , escherichia coli , bacteria , antibiotics , antibacterial activity , food science , microbiology and biotechnology , biology , chemistry , biochemistry , genetics , gene
The effects were studied of extracts from the chrysophyte Ochromonas malhamensis on Staphylococcus aureus, Bacillus megaterium, Bacillus subtilis and Escherichia coli . The extracts contained three different antibiotically active substances, one of which was produced during the extraction. The other two had no effect on E. coli, but inhibited the growth of the three other bacteria. The present experiments show that one of the products increases its antibiotic activity when exposed to visible light, and that its activity is enhanced by boiling the extracts for 5 minutes. The other active substance is not affected by light, but shows increased activity after being boilt for 5 minutes.