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1. (Article ID: 8202)
 
Kulakovskaya E, Baskunov B, Zvonarev A
The antibiotic and membrane-damaging activities of cellobiose lipids and sophorose lipids
Journal of Oleo Science 63(7) (2014) 701-707
 

Antibiotic activity was compared for Cryptococcus humicola cellobiose lipids, the mixture of 2,3,4-О-triacetyl-β-D-glucopyranosyl-(1→4)-(6-О-acetyl-β-D-glucopyranosyl-(1→16)-2,16-dihydroxyhexodecanoic acid and 2,3,4-О-triacetyl-β-D-glucopyranosyl-(1→4)-(6-О-acetyl-β-D-glucopyranosyl-(1→16)-2,17,18-trihydroxyoctotodecanoic acid, and the commercial sophorose lipid mixture of a mono-acetylated acidic sophorose lipid and a di-acetylated acidic sophorose lipid, both containing the C18:1 fatty acid residue. The MIC values of cellobiose lipids were 0.005 and 0.04 mg/mL for Filobasidiella neoformans and Candida tropicalis, respectively. The MIC values of sophorose lipids were 1 and 15 mg/mL for F. neoformans and C. tropicalis, respectively. MIC values for some bacteria were in the range of 10-30 mg/mL for both glycolipid preparations. Both sophorose lipids and cellobiose lipids displayed a membrane-damaging activity against F. neoformans. The treatment with these glycolipids reduces the content of ATP in the cells of test cultures and results in their staining with ethidium bromide.

cellobiose lipid, fungicide, Cryptococcus humicola, Filobasidiella neoformans, sophorose lipid, membrane-damaging activity

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