ABSTRACT
This paper aimed to evaluate the influence of seasonality on the chemical composition of oysters (Crassostrea rhizophorae). Samples were collected during summer and winter from the estuary and lagoon complex of the municipality of Barra de São Miguel, Alagoas, Brazil. Statistical differences (p<0.05) between summer and winter were observed in relation to chemical composition. The oysters cultivated in the winter presented some nutritional advantages because of the higher levels of proteins and functional nutrients, such as the eicosapentaenoic-docosahexaenoic acid combination and percentages of polyunsaturated fatty acids (n-3 and n-6), and the lower levels of saturated fatty acids. Therefore, the animals in winter presented a higher content of cholesterol oxides. The levels of cholesterol oxides found in these products during winter may encourage researchers to investigate the composition of oysters cultivated in different climates all over the world.
Subject(s)
Crassostrea/chemistry , Shellfish/analysis , Animals , Brazil , Fatty Acids/analysis , Proteins/analysis , SeasonsABSTRACT
In order to evaluate the nutritional value of Pilar soft crab (Callinectes bocourt A.) and uçá crab (Ucides cordatus L.), 20 samples of both crustaceans were collected from lagoone-estuary complex Mundaú/Manguaba, located in the state of Alagoas, Brazil. Results from this analysis showed a high levels of moisture (sof crab - 79.82%; crab 78.85%), proteins (soft crab - 17.71; crab - 17.99%) and ash (soft crab - 2.18%; crab - 2,06%), and reduced values of lipids (soft crab - 2.78%; - crab 2.57%). Caloric values reached to 96.0 kcal in soft crab and 95.0 kcal in crab. Cholesterol levels were very low, being 34.65mg/100mg in Pilar soft crab and 35.37mg/100mg in crab-uçá. As for fatty acids contents, the Pilar soft crab presented 37.9% of saturated, 23.2% of monounsaturated and 29.9% of poyunsaturated; while uçá-crab presented 30.0% of saturated, 31.4% of monounsaturated and 34.9% of polyunsturated. In view of these results, both species should be considered a healthy food, and their xonsuption should be stimulated.
Subject(s)
Cholesterol , Crustacea , Diet , Centesimal Scale , Fatty AcidsABSTRACT
Dados epidemiológicos, clínicos, clínico-patológicos e experimentais tem mostrado que níveis elevados de colesterol sangüíneo guardam estreita relação com as doenças cardiovasculares, constituindo um dos fatores de risco, assim como a hipertensão, o fumo, o estresse e a vida sedentária. Como hábitos alimentares contribuem para a etiologia dessas morbidades, o conhecimento dos teores de colesterol e lipídios totais nos alimentos é fundamental para uma orientação dietética que atenda a recomendação do "National Cholesterol Education Program". Por conseguinte, no presente trabalho foram determinados os teores de lipídios totais e colesterol em amostras " in natura" de carne bovina (contra-filé) e suína (pernil)...
