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milos mom asked in HealthDiet & Fitness · 1 decade ago

Trans Fat Question...Partially hydrogenated makes it trans?

Does the process of taking hydrogen and oil make it a trans fat? How come on most food we eat says "partially hydrogenated"/ oil but has no trans fat on the nutrition guide. Wouldnt those have trans fat because of the process used with the oil? How come vegetable and soybean partially hydrogenated oil does not have trans fat? Ive been wondering this.

2 Answers

  • ?
    Lv 4
    1 decade ago
    Favorite Answer

    Chemically, first understand how fats are composed. Saturated fats have chains of carbon atoms that are "saturated" with hydrogen atoms. Every available bond is taken with one. Unsaturated fats have double bonds between some of the carbon atoms and are missing hydrogen atoms. When you fully hydrogenate, you again wind up with saturated fat. When you partially hydrogenate, it puts those hydrogen atoms on... but on opposite sides of where the double bond was. That is what a trans fatty acid is.

    Anything with partially hydrogenated oil has trans fat. It's just a "small" amount. Anything with less than 0.5 grams of trans fat and less than 2 grams of saturated fat can claim to be trans fat free. Not promising, considering you really shouldn't have any more than 2 or 3 grams of trans fat per day.

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  • 1 decade ago

    There ARE trans fat in those food. But there is a loop hole in the labeling rule that if there is less than 1.0 gram of trans fat, like 0.99 gram per serving, then they can claim it to be trans fat free. And they can also make the serving smaller so that it would have less than 1 g to make that claim.

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