Tortugas Marinas

Composición química del huevo de Tortuga Golfina Lepidochelys olivacea (Testudines: Cheloniidae) y su potencial como recurso alimenticio
María Isabel Castro-González* & Fernando Pérez-Gil RomoInstituto Nacional de Ciencias Médicas y Nutrición Salvador Zubirán. Departamento de Nutrición Animal. Vasco de Quiroga 15. Tlalpan. C.P. 14000. México, D.F. México; isacastro55@yahoo.com.mx *Correspondencia Recibido 04-VI-2010. Corregido 20-II-2011. Aceptado 25-III-2011.

Abstract: Chemical composition of eggs of the Olive Ridley Lepidochelys olivacea (Testudines: Cheloniidae) and it’s potentialas a food source. The Olive Ridley is a worldwide distributed species with high nesting production per season, and in La Escobilla Oaxaca, México, there is a 70% of non-hatched eggs that are lost. Inorder to evaluate their potential use as a source for human and animal food products, their chemical composition was analyzed. Lyophilized egg samples from 25 turtles were obtained and were analyzedfollowing the analytical methods for fatty acids, protein, fat, ash, moisture, amino acids, vitamins, cholesterol and microbiological agents. The analytical composition obtained was (g/100g): moisture(4.7), ash (3.8), protein (53.7), and fat (47.4). The essential amino acid (g aa/100g protein) content was: Ile (4.4), Lys (6.6), Leu (7.4), Met+Cys (8.8), Phe+Tyr (10.8). The vitamin content was:retinol (340μg/100g), cholecalciferol (5.9μg/100g) and 8.6mg/100 tocopherol, 0.3mg/100g thiamine and 1.1mg/100g riboflavin. The total lipid content (TL), fatty acids (FA), and cholesterol (Chol) weredivided into three groups based on the weight of the turtle: (TL) (44.3-48.7-49.1g/100g) and (Chol) (518.4-522.5mg/100g-728.7). A total of 17 Saturated FA (SFA), 8 Monounsaturated FA (MUFA) and 11Polyunsaturated FA (PUFA) were identified. The most abundant SFA (mg/100g) were: C14:0 (445-772), C16:0 (485-1263); MUFA: C16:1 (456-716), C18:1n-9c (904-1754), and PUFA: C20:4n-6 (105-217); two n-3 fatty...