| 摘要: |
| 长丰鲢是人工培育出的鲢鱼新品种。为充分了解长丰鲢的营养特性,更好地利用长丰鲢资源,对北方地区养殖的长丰鲢各部位主要营养成分进行分析,用气相色谱法(GC) 测定其不同部位的脂肪酸种类和含量,并将其肌肉营养成分和脂肪酸组成与普通白鲢进行对比。结果表明:长丰鲢各部位间的营养成分存在差异,其中肌肉中的粗脂肪和粗蛋白质量分数较高,分别为3.00%和16.21%;鳍中灰分的质量分数为23.64%,是肌肉中的20倍;内脏中水分和脂肪的质量分数最高,分别为75.68%和7.41%。长丰鲢各部位的不饱和脂肪酸含量较高,鱼肉不饱和脂肪酸中C18:1n9的质量分数最高,为21.20%。肌肉中ΣEPA+DHA的质量分数为8.48%,鱼头中为7.49%,高于其他部位。与普通白鲢相比,长丰鲢肌肉中的α-亚麻酸的含量高于白鲢,但ΣEPA+DHA低于白鲢,主要营养成分差别不大。 |
| 关键词: 长丰鲢 营养成分 气相色谱 脂肪酸 |
| DOI：10.11841/j.issn.1007-4333.2015.01.018 |
| 投稿时间：2014-03-24 |
| 基金项目:现代农业产业技术体系建设专项资金资助(CARS-46) |
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| Comparison and analysis of major nutritional components in different body parts of Changfeng silver carp |
|
QIN Na, ZHANG Yue-mei, LUO Yong-kang
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| (College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China) |
| Abstract: |
| Changfeng silver carp is artificially bred new varieties of carp.In order to better understand the nutritional quality of Changfeng silver carp and utilize Changfeng silver carp resource,experimental analysis on the nutritional variability in different parts of Changfeng silver carp were conducted.General nutrients and fatty acids of different parts of the silver carp were measured in gas chromatography (GC) to determine the types and relative content of fatty acids.The nutrient composition of Changfeng silver carp was different in different parts of the body.The content of crude protein and crude fat in muscle was 3.00% and 16.21%,higher than other parts;Ash in fins was highest for 23.64%,up to 20 times the ash content in meat;Moisture and fat content were highest in visceral,75.68%,7.41% respectively.Unsaturated fatty acid in Changfeng silver carp was higher comparing to other silver carps,and unsaturated fatty acids in fish C18:1n9 was highest content of 21.20%.The sum of EPA and DHA content in muscle was 8.48%,the content in head was 7.49%,higher than other parts.Changfeng silver carp muscleα-linolenic acid was higher than other silver carp,but ΣEPA + DHA was lower. |
| Key words: Changfeng silver carp nutritional components gas chromatography fatty acid |
