title: The trans fatty acids content of selected foods in Malaysia.
abstract: BACKGROUND
  There is a lack of information on the trans fatty acid (TFA) content in Malaysian foods. The objective of this study is to determine the TFA content of bakery products, snacks, dairy products, fast foods, cooking oils and semisolid fats, and breakfast cereals and Malaysian fast foods. This study also estimated the quantity of each isomer in the foods assayed.
  
  
  METHODS
  The trans fatty acid content of each food sample was assessed in duplicate by separating the fatty acid methyl esters (FAME) in a gas chromatography system equipped with HP-88 column (USA: split ratio 10: 1) for cis/trans separation. Five major TFA isomers, palmitoelaidic acid (16: 1t9), petroselaidic acid (18:1t6), elaidic acid (18:1t9), vaccenic acid (18: 1t11) and linoelaidic acid (18:2t9, 12), were measured using gas chromatography (GC) and the data were expressed in unit values of g/100 g lipid or g/100 g food.
  
  
  RESULTS
  The total TFA contents in the studied foods were < 0.001 g-8.77 g/100 g lipid or < 0.001 g-5.79 g/100 g foods. This value falls within the standard and international recommendation level for TFA. The measured range of specific TFA isomers were as follows: palmitoelaidic acid (< 0.001 g-0.26 g/100 g lipid), petroselaidic acid (< 0.001 g - 3.09 g/100 g lipid), elaidic acid (< 0.001 g-0.87 g/100 g lipid), vaccenic acid (< 0.001 g-0.41 g/100 g lipid) and linoelaidic acid (< 0.001 g-6.60 g/100 g lipid).
  
  
  CONCLUSIONS
  These data indicate that most of the tested foods have low TFA contents (< 1 g/100 g lipid).
authors.forename: Z D
authors.initials: ZD
authors.lastname: Akmar
authors.forename: M E
authors.initials: ME
authors.lastname: Norhaizan
authors.forename: R
authors.initials: R
authors.lastname: Azimah
authors.forename: A
authors.initials: A
authors.lastname: Azrina
authors.forename: Y M
authors.initials: YM
authors.lastname: Chan
mesh_terms: D001939:Bread / Q000032:analysis; D002849:Chromatography, Gas / Q000379:methods; D003611:Dairy Products / Q000032:analysis; D004041:Dietary Fats / Q000032:analysis*; D004042:Dietary Fats, Unsaturated / Q000032:analysis; D002523:Edible Grain; D057140:Fast Foods / Q000032:analysis; D005504:Food Analysis / Q000379:methods* / Q000706:statistics & numerical data*; D008296:Malaysia; D062410:Snacks; D044242:Trans Fatty Acids / Q000032:analysis*
chemical_list: D004041:Dietary Fats; D004042:Dietary Fats, Unsaturated; D044242:Trans Fatty Acids