Inferencia paleodietaria en el sitio arqueológico Los Amarillos (Quebrada de Humahuaca, Jujuy, Argentina)

This paper presents the results of stable carbon and nitrogen isotopes analysis (δ13Cco, δ15N and δ13Cap) of a sample of 20 adult human individuals from different sectors of the site Los Amarillos (Regional Development and Inca Period, Humahuaca, Jujuy, Argentina). The main goal was to determine the prevailing resources in diets, considering regional isotopic data for vegetable and animal resources. Besides, the internal variability of the sample was evaluated, considering the spatial provenance of the individuals. Our results indicate a balanced diet among meat resources, from heights below 3.900 m a.s.l., and vegetables under C4 photosynthetic pathway (maize and amaranth). The sample shows also little difference in dietary patterns, when the contextual information of the burials is taken into account.El siguiente trabajo expone los resultados del análisis de isótopos estables de carbono y nitrógeno (δ13Cco, δ15N y δ13Cap) de una muestra de 20 individuos humanos adultos procedentes de diferentes sectores del sitio Los Amarillos (Período de Desarrollos Regionales e Inca, Quebrada de Humahuaca, Jujuy, Argentina). El principal objetivo consistió en determinar los recursos predominantes en las dietas, considerando la información isotópica regional para recursos vegetales y animales. En segundo lugar, se evaluó la variabilidad interna de la muestra, considerando la procedencia espacial de los individuos. Nuestros resultados indican una dieta equilibrada entre recursos cárnicos procedentes de cotas por debajo de los 3.900 m s.n.m. y vegetales bajo la vía fotosintética C4 (maíz y amaranto). Asimismo, si se considera la información contextual de las inhumaciones, los patrones dietarios presentan una escasa diferenci

Bioactive Steroidal Glycosides from the Starfish Anasterias

Abstract: Cytotoxic fractions obtained by purification of the ethanolic extract of Anasterias minuta contain sulfated hexasaccharide glycosides. These compounds show antifungal activity against Cladosporium cucumerinum

Novel sterols from the sponge esperiopsis edwardii

The sponge Esperiopsis edwardii was examined for its steroids. It contains forty-three C27-C29 derivatives with four different types of nucleus: 3 β-hydroxy-Δ5-; 3β-hydroxy-5αH-; 3α-hydroxy-5α H- and 3-keto-Δ4-derivatives. The four groups present similar side-chain patterns and identical GC profiles. Those sterols having the 3α-hydroxy-5αH-structural configuration constitute a new group of natural products. © 1988