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Isolation of erythromycins and related substances from fermentation residues of strepto.'i1yces erythreus by high-performance liquid chromatography on silica gel
Preparative high-performance liquid chromatography on silica gel allows the isolation of erythromycins and related substances from mother-liquor concentrates. Three mobile phases were used consecutively: A, ethyl ...
Antibacterial activities of erythromycins A, B, C, and 0 and some ,of their derivatives
The MICs of erythromycins A, B, C, and J) and some of their derivatives were determined against 21 gram-positive and 15 gram-negative microorganisms, Antibacterial activity was confined to gram-poSiti,'e and very few ...
Separation of erythromycin and related substances by high-performance liquid chromatography on poly (styrene-divinylbenzene) packing materials
A comparative evaluation of three brands of polyrstyrene-divinylbenzene) co¬polymers, Hamilton PRP-I (10 ,um), Rogel (8 ,um) and TSK-Gel (10 Jim), as column packing materials for high-performance liquid chromatographic ...