Analysis and Evaluation of Nutritional Contents in Muscle of Guizhou Sansui Duck Cultured with Different Methods
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Abstract:
To study the nutritive value of Sansui duck (scattered culturing) and Sansui duck (enterprise management culturing) in Guizhou, using the national standard method to determine the composition and content of the basic nutrients, mineral elements and amino acids of these two duck meats, nutrient components in muscle of them were analyzed and the nutritive quality of the meat were evaluated in this study. The results showed that the moisture (76.30%), crudeprotein (21.36%), and mineral (649.02 mg/100 g) content in the Sansui duck (scattered culturing) muscle were significantly higher than those in Sansui duck (enterprise management culturing) muscle; but the crudefat (2.12%) in the Sansui duck (scattered culturing) muscle was lower than that in Sansui duck (enterprise management culturing) muscle (p<0.05). They have the same cholesterol content (64.00 mg/100g). Lead and cadmium were not detected. A total of 16 amino acids were detected in muscle proteins of Sansui duck cultured with different methods , and the total amino acid (19.14 g/100 g), total essential amino acid (8.28 g/100 g), essential amino acid index (76), biological value (71) and nutritional index (0.16) of Sansui duck (scattered culturing) were higher than those of Sansui duck (enterprise management culturing), the content of delicious amino acids (8.70g/100g) was lower than that of Sansui duck (enterprise management culturing). Amino acid score (AAS) analyses showed that the first limiting amino acid in muscle of Sansui duck cultured with different methods were Met+Cys. The ratio of essential amino acids to total amino acids and the ratio of essential amino acids to nonessential amino acids of the two kinds of Sansui duck cultured with different methods met WHO/FAO standard.18 and 20 fatty acids were detected in two kinds of duck meat, respectively. The contents of saturated fatty acid (0.77%), monosaturated fatty acid (0.86%) and polyunsaturated fatty acid (0.36%) in Sansui duck (scattered culturing) were significantly higher than those in Sansui duck (enterprise management culturing) (p<0.05). Sansui duck (scattered culturing) has high the nutritional value of basic nutritional components and amino acid, and Sansui duck (enterprise management culturing) has high delicate amino acid and reasonable fatty acid quality.
