Trans fatty acids in adipose tissue of French women in relation to their dietary sources
Trans fatty acids in adipose tissue of French women in relation to their dietary sources
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DOI：
10.1007/s11745-000-556-4
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发表时间：
2000-05-01
期刊：
影响因子：
1.9
通讯作者：
Leng, JJ
中科院分区：
文献类型：
--
作者：
Boué, C;Combe, N;Leng, JJ
这项研究报告了法国女性皮下脂肪组织的脂肪酸组成，特别强调了来自两种主要饮食来源的反式脂肪酸的含量，反式脂肪和部分氢化植物油(PHVO)。采用毛细管气相色谱和硝酸银薄层色谱相结合的方法，测定了1997年至1998年间招募的71名女性的脂肪组织反式脂肪酸水平。结果表明，平均而言，顺式单不饱和脂肪酸占总脂肪酸的47.9%，饱和脂肪酸占32.2%，亚油酸占14.4%。顺式n-3多不饱和物仅占0.7%。总反式脂肪酸含量为2.32+/-0.50%，其中反式18：1(1.97+/-0.49%)，反式18：2(0.28+/-0.08%)，反式16：1(0.06+/-0.03%)。反式18：3异构体未检出。法国女性脂肪组织中的反式脂肪酸水平低于加拿大、美国和北欧国家的报告水平，但高于西班牙的水平。因此，法国的反式脂肪酸消费量似乎介于美国或北欧和西班牙之间。根据Enig等人的公式，我们估计法国女性平均每天的反式18：1酸摄入量为每人1.9g。脂肪组织中主要的反式18：1异构体是Delta 11反式，反式脂肪中也是如此。反式脂肪酸摄入量的相对贡献率估计为55%来自反式脂肪，45%来自PHVO。这一模式与加拿大和美国的模式形成鲜明对比，据报道，在加拿大和美国，PHVO是反式脂肪酸的主要饮食来源。
This study reports the fatty acid composition of subcutaneous adipose tissue in French women with special emphasis on the content of trans fatty acids originating from two main dietary sources, ruminant fats and partially hydrogenated vegetable oils (PHVO). Adipose tissue trans fatty acid levels from 71 women, recruited between 1997 and 1998, were determined using a combination of capillary gas chromatography and silver nitrate thin-layer chromatography. Results indicate that on average cis monounsaturates accounted for 47.9% of total fatty acids, saturates for 32.2%, and linoleic acid for 14.4%. Cis n-3 polyunsaturates represented only 0.7%. Total content of trans fatty acids was 2.32 +/- 0.50%, consisting of trans 18:1 (1.97 +/- 0.49%), trans 18:2 (0.28 +/- 0.08%), and trans 16:1 (0.06 +/- 0.03%). Trans 18:3 isomers were not detectable. The level of trans fatty acids found in adipose tissue of French women was lower than those reported for Canada, the United States, and Northern European countries but higher than that determined in Spain. Therefore, trans fatty acid consumption in France appears to be intermediate between that of the United States or North Europe and that of Spain. Based on the equation of Enig et al., we estimated the mean daily trans 18:1 acid intake of French women at 1.9 g per person. The major trans 18:1 isomer in adipose tissue was Delta 11 trans, as in ruminant fats. Estimates of relative contribution of trans fatty acid intake were 55% from ruminant fats and 45% from PHVO. This pattern contrasts sharply with those established for Canada and the United States where PHVO is reported to be the major dietary source of trans fatty acids.