【摘要】 主要就中国水域糙齿海豚肌肉组织的营养组成情况进行分析。分析部位包括背肌、腹肌和尾肌3个部分。分析结果表明,海豚肌肉组织粗营养成分中腹肌脂肪含量最高,背肌粗蛋白含量最高。肌肉中氨基酸组成具有极高的一致性,含量最高的氨基酸均为谷氨酸,最低的是胱氨酸。海豚肌肉组织脂肪酸组成含有动物及鱼油中典型的脂肪酸如棕榈酸(16:0)、棕榈油酸(16:1)、硬脂酸(18:0)、油酸(18:1)、EPA(20:5ω-3)及DHA(22:6ω-3)。饱和脂肪酸(SFA)的总量与单不饱和脂肪酸(MUFA)的总量相近且大于多不饱和脂肪酸(PUFA)的总量。不饱和脂肪酸中ω-3/ω-6的比值较低(0.12～1.36),与其它海洋有机生物相比(通常高于4,有的高达50),该值明显偏低。海豚肌肉组织中富含钙(Ca)、镁(Mg)、铁(Fe)及锌(Zn)、铜(Cu)、锰(Mn)、硒(Se)等微量元素,这些元素在海豚肌肉组织中的分布无明显差别。更多还原

【Abstract】 Distribution of nutritional composition in muscle tissue was analyzed for rough-toothed dolphin(Steno bredanensis)from the South China Sea coast.Muscle samples were taken from back,belly and tail.The results showed that content of lipids in belly and protein in back muscle were highest.Composition of amino acids was extremely similarity.Glu was highest and Csy was lowest among 18 amino acids.No significant difference for fatty acids composition was observed in different samples.Typical fatty acids found in the major part of animals and fish oil,such as palmitic(16:0),palmitoleic acid(16:1),stearic(18:0),oleic(18:1),EPA(20:5 ω-3)and DHA(22:6 ω-3)dominated in the muscles of rough-toothed dolphin.Very close amount of SAF and MUFA were obtained,which were higher than total PUFA.The ratio of polyenes ω-3/ω-6 was about 0.12~1.36,which is normally higher than 4 and up to 50 in other marine organisms,this value was normally low.Muscles of dolphins were rich in Ca,Mg,Fe and trace metals such as Zn,Cu,Mn,Se.There was no significant difference for the distribution of these metals among muscle samples.更多还原