The Polar Carotenoid Fraction from Sarcina Flava

Intracellular location of carotenoid pigments and some respiratory enzymes in Sarcina lutea.

The study of the analytical cytology of the bacterial cell was initiated with the work of Schachman et al. (1952), which revealed the presence of a variety of particles in extracts of many microorganisms. Since that time, numerous workers have isolated and characterized some of these particles. This work has been thoroughly reviewed by Alexander (1956). More recent studies (Cota-Robles et al., ...

Fine structure of Sarcina maxima and Sarcina ventriculi.

The fine structure of Sarcina maxima and S. ventriculi was studied by electron and phase-contrast microscopy. The two organisms differ mainly with respect to their cell surface. A thick cellulose layer present on the cell wall of S. ventriculi was not observed on the surface of S. maxima. Carbon replication indicated that the outer surface of S. ventriculi is rough in contour, probably as the r...

The isolation of Sarcina ureae (Beijerinck) Lohnis from sea water.

Nardosinane sesquiterpenoids from the Formosan soft coral Lemnalia flava.

Four new nardosinane-type sesquiterpenoids, flavalins A-D (1-4), have been isolated from the Formosan soft coral Lemnalia flava. The structures of the new metabolites were determined by extensive spectroscopic analysis, and the structure of 2 was confirmed by X-ray diffraction analysis. A plausible biosynthetic pathway to 1 and 2 is proposed. Compound 1 was found to display dose-dependent inhib...

extensions of some polynomial inequalities to the polar derivative

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