Trans-fat substitutes: How?
December 31, 2007
Here’s a quick question, just in: “I finally got the chance to finish What to Eat, and I noticed that you didn’t talk about non-hydrogenated margarine in your margarine section. I’m not wondering if it’s better for you because I’m sure it’s still soybean oil with a bunch of stabilizers, but I’m just wondering how it’s made.”
Response: I did actually, but in two other chapters, the next one and the one on fats and oils so the explanation is hard to find. Sorry about that. Here’s the deal: companies use variations of two methods: (1) substitute a highly saturated fat like palm kernal or coconut oils, or (2) mix a totally saturated fat (which will not have any trans) with an unhydrogenated fat (also trans-free) until you get the degree of thickness required. Both methods increase the amount of saturated fatty acids. Saturated fats raise the risk of heart disease, but not as much as trans. So the substitutes are likely to be marginally better than oils with trans.




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Comment by dorothy — January 8, 2008 @ 6:22 am
So if an oil is fully-hydrogenated, than its not a trans fat? Even if it is artificially fully-hydrogenated?
Comment by Corey — August 11, 2008 @ 4:16 pm
No, it’s not. Trans fats are unsaturated. The trans configuration refers to hydrogens on each side of a double bond. Fully hydrogenated fats are fully saturated and don’t have any double bonds. You have to be an oil chemist to understand all this stuff, but I hope this helps.
Comment by Marion — August 12, 2008 @ 10:58 am