Trans Fatty Acids
ثبت نشده
چکیده
What are trans fatty acids (TFA)? Fatty acids found in foods can be saturated (SFA, no double bonds), monounsaturated (MUFA, 1 double bond) or polyunsaturated (PUFA , 2 or more double bonds). The double bonds provide rigidity to the molecule and result in specific molecular configurations. Naturally occurring fatty acids in foods usually have the cis configuration, i.e. the hydrogen atoms with respect to the double bond are on the same side of the molecule. This results in the molecule having a “V” or bent shape. In trans fatty acids (TFA), the hydrogen atoms are on the opposite sides of the molecule, and the molecule assumes a nearly linear configuration similar to that for saturated fatty acids (SFA). Thus TFA behave more like SFA than MUFA or PUFA, and this has consequences when they are incorporated into membranes and other cellular structures.
منابع مشابه
Measurement and comparison of trans fatty acids amount in some of the vegetable oils, frying oils and animal and vegetable fats in Iran
The role of dietary fats and oils in human nutrition is one of the most important areas of concern and investigation in the field of nutritional science. The findings of investigations on this subject have wide-ranging implications for consumers, health-care providers and nutrition educators as well as food producers, processors and distributors. New evidence concerning the benefits and risks a...
متن کاملMeasurement and comparison of trans fatty acids amount in some of the vegetable oils, frying oils and animal and vegetable fats in Iran
The role of dietary fats and oils in human nutrition is one of the most important areas of concern and investigation in the field of nutritional science. The findings of investigations on this subject have wide-ranging implications for consumers, health-care providers and nutrition educators as well as food producers, processors and distributors. New evidence concerning the benefits and risks a...
متن کاملاسیدهای چرب ترانس بافت چربی و خطر ابتلا به بیماری عروق کرونر
Background & Aim: Dietary isomeric trans fatty acids are suspected to increase the risk of coronary artery disease. The fatty acid composition of human adipose tissue is a useful biomarker of the long-term average of dietary fat. In this population-based case-control study the association between trans fatty acids intake and the risk of coronary artery disease was investigated. Patients & M...
متن کاملI-9: Sperm Trans Fatty Acids: An Undertreated Issue in Men Infertility
Background: Mammalian spermatozoa are characterized by a high proportion of polyunsaturated fatty acids (PUFA) and the membrane structure of spermatozoa plays a crucial role in fertilization. Moreover, dietary fatty acid (FA) influence sperm FA profiles in several species. This study focused on responses to dietary omega-3 fatty acids and comprehensive fatty acid profiles analysis in men as wel...
متن کاملEffects of Trans Fatty Acid Decreasing Policy on Its Consumption by Households in Six Provinces of Iran
Background and Objectives: High intakes of saturated and trans fatty acids can increase risks of cardiovascular diseases and cancers. Therefore, removal of partially-hydrogenated vegetable oils containing trans fatty acids has been suggested as one of the most effective health interventions. The aim of the current study was to investigate the policy effects of decreasing trans fatty acids in pa...
متن کاملI-7: Fatty Acids and Male Reproductive Function
Background Background: The fatty acid composition of the sperm membrane changes drastically during spermatogenesis and may be key to its function. Previous data has shown that intake of long chain poly-unsaturated fatty acids can change the fatty acid composition of tissues, including testes and sperm. However, whether these changes in composition translate into changes in semen quality or male...
متن کامل