Fatty acids profile and nutritional composition of two tropical diatoms from the Costa Rican Pacific Coast

K. Rodríguez-Núñez; P. Toledo-Agüero

doi:10.3989/gya.1276162

Autores/as

K. Rodríguez-Núñez Programa de Magíster en Acuicultura, Facultad de Ciencias del Mar, Universidad Católica del Norte - Estación de Biología Marina, Escuela de Ciencias Biológicas, Universidad Nacional de Costa Rica https://orcid.org/0000-0001-7644-4482
P. Toledo-Agüero Departamento de Acuicultura, Facultad de Ciencias del Mar, Universidad Católica del Norte https://orcid.org/0000-0003-3844-1824

DOI:

https://doi.org/10.3989/gya.1276162

Palabras clave:

Ácidos grasos, Bacillariophyceae, Composición química, Costa Rica, Cultivos microalgales

Resumen

Las microalgas representan una fuente alimenticia importante para diversos organismos, por lo que su valor nutricional debe ser considerado, especialmente su contenido de lípidos totales y el perfil de ácidos grasos. Este estudio tuvo como objetivo evaluar el crecimiento y determinar la composición bioquímica de dos cepas de microalgas tropicales aisladas de la costa del Pacífico Central de Costa Rica, Nitzschia sp. y Chaetoceros sp. En ambas se evaluó la composición nutricional y perfil de ácidos grasos en fase exponencial y estacionaria. Nitzschia sp. tuvo mayor cantidad de ácido eicosapentanoico (EPA) en ambas fases (32.80% y 27.20%, respectivamente). Los resultados en tasa de crecimiento, producción y composición bioquímica, presentan dos cepas de microalgas tropicales aptas para su cultivo en condiciones controladas. Estudiar el fitoplancton de esta zona es muy relevante debido a su importancia en la producción primaria y en la búsqueda de fuentes de ácidos grasos como el EPA.

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Citas

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