Assessment of individual fatty acid intake
Assessment of individual fatty acid intake
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DOI：
10.1017/s0029665100000203
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发表时间：
2000-05-01
影响因子：
7
通讯作者：
Cantwell, MM
中科院分区：
文献类型：
--
作者：
Cantwell, MM
由于许多限制，对个体脂肪酸摄入量进行膳食评估很困难。需要提供有关烹饪中和餐桌上使用的脂肪的类型、数量和品牌名称的信息。此外，人造黄油制造商可能出于成本原因而改变所使用的成分油，这使得其产品的脂肪酸组成随季节而变化。因此，需要脂肪酸摄入量的独立标记来弥补这些限制。在许多研究中，脂肪组织浓度已被用作脂肪酸组和单个脂肪酸习惯摄入量的衡量标准。饱和脂肪酸（SFA）和单不饱和脂肪酸（MUFA）通常与脂肪组织浓度相关性较差，这可以部分通过内源合成来解释。一般来说，脂肪组织中外源产生的脂肪酸（n-3 和 n-6 多不饱和脂肪酸 (PUFA)）浓度与习惯摄入量的估计值密切相关。膳食反式不饱和脂肪酸（TUFA）与脂肪组织浓度之间的相关性因国家而异，这可能是由于膳食来源的差异所致。相关性可能受到某些组织脂质中脂肪酸的生物利用度或选择性保留的差异的影响。
Dietary assessment of individual fatty acid intake is difficult due to a number of limitations. Information regarding the type, quantity and brand-name of fat used in cooking and at the table is required. In addition, margarine manufacturers may change the component oils used for reasons of cost, which changes the fatty acid composition of their products from season-to-season. Independent markers of fatty acid intake are required, therefore, to compensate for these limitations. Adipose tissue concentrations have been used as a measure of habitual intake of fatty acid groups and individual fatty acids in numerous studies. Saturated (SFA) and monounsaturated fatty acids (MUFA) are generally poorly correlated with adipose tissue concentrations, which can be explained partly by endogenous synthesis. In general, adipose tissue concentrations of exogenously-produced fatty acids (n-3 and n-6 polyunsaturated fatty acids (PUFA)) are well correlated with estimates of habitual intake. Correlations between dietary trans unsaturated fatty acids (TUFA) and adipose tissue concentrations vary between countries, which may be due to differences in dietary sources. Correlations may be affected by differences in bioavailability or selective retention of fatty acids in certain tissue lipids.