Grasas y Aceites, Vol 68, No 3 (2017)

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

K. Rodríguez-Núñez, P. Toledo-Agüero

DOI: http://dx.doi.org/10.3989/gya.1276162

Abstract


Microalgae represent an important nutritional source for diverse organisms, therefore, their nutritional value, and more specifically, total lipid and fatty acid contents, must be considered. This study evaluated the nutritional contents and potential growth under controlled conditions of Nitzschia sp. and Chaetoceros sp. Tropical microalgae, isolated from the Gulf of Nicoya, Costa Rica. In both strains, the nutritional composition and the fatty acid profile were evaluated in exponential and stationary phases. With regards to fatty acids, v sp. had more Eicosapentaenoic Acid (EPA) in both the exponential (32.80%) and stationary (27.20%) phases. The results in growth rate, production and biochemical composition indicated two tropical microalgae strains suitable for cultivation under controlled conditions. The studies of the phytoplankton in this geographical area is highly relevant because of its importance in the primary production of nutrients and the importance of finding sources of fatty acids such as the EPA.

Keywords


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

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References


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