Composición de ácidos grasos de los caracoles marinos Phyllonotus pomum y Chicoreus brevifrons (Gastropoda: Muricidae)
Rev. biol. trop
; 58(2): 645-654, jun. 2010. tab
Article
in Es
| LILACS
| ID: lil-638030
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ABSTRACT
Fatty acids composition of the marine snails Phyllonotus pomum and Chicoreus brevifrons (Muricidae). Muricid species of P. pomum and C. brevifrons are of economic importance in the Caribbean. This study includes a comparative evaluation of fatty acid content in the total lipid composition of Phyllonotus pomum and Chicoreus brevifrons. Snail samples were collected during the rainy, dry and transition seasons, in Punta Arena, Sucre (Venezuela). Total lipids were extracted and the specific fatty acid contents were analyzed by gas chromatography. Lipid concentrations varied between 0.87 and 1.85%, with minimum and maximum values corresponding to C. brevifrons collected during rainy and dry seasons, respectively. In the case of total lipids, a high concentration of unsaturated fatty acids (57.21-70.05%) was observed followed by saturated fatty acids (20.33- 31.94%), during all seasons. The polyunsaturated occurred in higher proportion among the unsaturated fatty acids, except for P. pomum which showed higher proportion of monounsaturated fatty acids (38.95%) during the transition season. The prevailing fatty acids were C140, C160, C180, C201, C221 ω-11, C221 ω-9, C183 ω-3, C205 ω-3 and C226 ω-3, among which docosahexaenoic acid was the predominant polyunsaturated fatty acid, showing values between 4.62 and 33.11%. The presence of high concentrations of polyunsaturated fatty acids found in P. Pomum and C. brevifrons allow their recommendation for human consumption with appropriate resource utilization. Rev. Biol. Trop. 58 (2) 645-654. Epub 2010 June 02.
RESUMEN
Se comparó el contenido de ácidos grasos en los lípidos totales de los caracoles Phyllonotus pomum y Chicoreus brevifrons, recolectados en tres diferentes épocas del año en Punta Arena, estado Sucre, Venezuela. Las concentraciones lipídicas oscilaron entre 0.87 y 1.85%, correspondiendo el valor mínimo y el máximo a C. brevifrons colectado en lluvia y sequía, respectivamente. La esterificación de los ácidos grasos presentes en estos lípidos seguida de la cromatografía de gases permitió la caracterización y cuantificación de los ácidos grasos. En los lípidos totales de las dos especies, en todas las épocas, se observaron elevadas concentraciones de ácidos grasos insaturados (57.21-70.05%) seguido de los saturados (20.33-31.94%). Entre los ácidos grasos insaturados, predominaron los de tipo poliinsaturados, exceptuándose el extracto lipídico de P. pomum en época de transición donde las grasas monoinsaturadas fueron las mayoritarias (38.95%). Los ácidos grasos que prevalecieron fueron C140, C160, C180, C201, C221 ω- 11, C221 ω-9, C183 ω-3, C205 ω-3 y el C226 ω-3, siendo este ϊltimo el predominante entre los αcidos grasos poliinsaturados, presentando porcentajes de distribuciσn comprendidos entre 4.62 y 33.11%. Debido a las altas concentraciones de ácidos grasos poliinsaturados encontradas en ambos caracoles, se recomienda su consumo para la alimentación de los seres humanos.
Key words
Full text:
1
Index:
LILACS
Main subject:
Snails
/
Lipids
Limits:
Animals
/
Humans
Language:
Es
Journal:
Rev. biol. trop
Journal subject:
BIOLOGIA
/
MEDICINA TROPICAL
Year:
2010
Type:
Article