Estimación del contenido de taninos en la corteza de 13 especies de pinos que crecen en Topes de Collantes
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Abstract
Se estudió el contenido potencial de taninos en la corteza de 13 especies de pino, representados en la prueba de especies ubicada en la zona del Palomar, en Topes de Collantes; de ellos, tres especies son cubanas, siete mexicana (una con dos procedencias), dos asiáticas y una variedad de P. caribaea de Bahamas. La extracción se realizó mediante el método de Soxhlet modificado y el análisis de los extractos se efectuó según el método de precipitación de tanatos con acetato de plomo. Para cada especie se determinaron los estadígrafos fundamentales: sólidos solubles, taninos, no taninos y sólidos insolubles. Se comprobaron todas las especies mediante un análisis de varianza y prueba de Duncan; las más promisorias resultaron el Pinus cocarpa y Pinus leiophylla (ambos de México), con 14,04 y 13,08% de taninos, respectivamente, los cuales no presentaron diferencias significativas entre sí.
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