中文摘要：

饮食的肉处于人的健康起一个关键作用。这调查的目的是决定丰满的酸内容和 omega-6/omega-3 多元不堡和丰满的酸(n-6/n-3 PUFA ) 来自在中国的四个城市(上海，南京，银川和 Hohhot ) 的新鲜的红肉(牛肉和猪肉) 的比率。结果证明从所有样品的 n-6/n-3 PUFA 比率从 6 ～ 23 。全部的 n-6 PUFA 集中从 Hohhot 在猪肉从南京在牛肉从 290.54 mg/100 g 到 1601.48 mg/100 g，而 n-3 PUFA 的全部的集中从南京在猪肉从南京在牛肉从 46.34 mg/100 g 到 96.03 mg/100 g。结果显示在从所有四个区域的红肉的 n-6/n-3 比率被失衡并且比那高得多(<；5:1 ) 由 WHO/FAO 推荐了。n-3 PUFA 的全部的数量比要求的每日的剂量远低。因此，在肉产品增加 n-3 PUFA 内容或提供选择的潜在的答案 n-3 PUFA 采购原料应该被探索。

英文摘要：

Dietary meats play a crucial role in human health. The objective of this survey was to determine the fatty acid content and omega-6/omega-3 polyunsaturated fatty acids （n-6/n-3 PUFA） ratio of fresh red meat （beef and pork） from four cities （Shanghai, Nanjing, Yinchuan and Hohhot） in China. The results showed that the n-6/n-3 PUFA ratio from all the samples ranged from 6 to 23. The total n-6 PUFA concentrations ranged from 290.54 mg/100 g in beef from Nanjing to 1601.48 mg/100 g in pork from Hohhot, whereas the total concentrations of n-3 PUFA ranged from 46.34 mg/100 g in beef from Nanjing to 96.03 mg/100 g in pork from Nanjing. The results indicated that the n-6/n-3 ratio in the red meat from all four regions is unbalanced and is much higher than that （〈 5：1） rec- ommended by the WHO/FAO. The total amount of n-3 PUFA was far lower than the required daily dose. There- fore, potential solutions to increase the n-3 PUFA content in meat products or to provide alternative source of n-3 PUFA should be explored.