| dicerandrols, new antibiotic and cytotoxic dimers produced by the fungus phomopsis longicolla isolated from an endangered mint. | bioassay-guided fractionation of the organic extract from a culture of phomopsis longicolla, an endophytic fungus of the endangered mint dicerandra frutescens, led to the isolation of dicerandrols a, b, and c. extensive nmr and hrfabms experiments were used to identify these new yellow antibiotic and cytotoxic compounds as 2,2'-dimeric tetrahydroxanthones. | 2001 | 11520215 |
| dry-heat resistance of selected psychrophiles. | the dry-heat resistance characteristics of spores of psychrophilic organisms isolated from soil samples from the viking spacecraft assembly areas at cape kennedy space flight center, cape canaveral, fla., were studied. spore suspensions were produced, and dry-heat d values were determined for the microorganisms that demonstrated growth or survival under a simulated martian environment. the dry-heat tests were carried out by using the planchet-boat-hot plate system at 110 and 125 degrees c with a ... | 1977 | 410367 |