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Ok, chem students. What is the difference between a trans fat and a partially hydrogenated oil?

I thought they were related, so when I bought a margarine type product that said no trans fat on the label, I was surprised to read in the fine print that it does have partially hydrogenated oils.

A trans fat is a specific type of partially hydrogenated oil.

I can’t draw diagrams here, but this wikipedia article does a good job explaining the difference. The partially hydrogenated oils in your margarine are all in the cis configuration.

http://en.wikipedia.org/wiki/Trans_fat

This entry was posted on Wednesday, September 30th, 2009 at 7:18 pm and is filed under trans. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

5 Responses to “Ok, chem students. What is the difference between a trans fat and a partially hydrogenated oil?”

  1. underoathfan777 on October 1st, 2009 at 12:53 am

    i just asked a question that cannot be answered by me haha:D
    References :

  2. Trans fat is the common name for a type of unsaturated fat with trans- isomer fatty acids. Trans fats may be monounsaturated or polyunsaturated.

    Most trans fats are industrially created by partially hydrogenating plant oils
    partial hydrogenation is to add hydrogen atoms to unsaturated fats, making them more saturated
    References :

  3. Partially hydrogenated deals with how many hydrogen atoms are attached to the carbon chain of the carbon backbone. This makes them saturated with hydrogen, which is why they are saturated fat. Trans actually has to deal with a double bond (or ring) not subject to free rotation in which the greater radical on both ends is on the opposite side of the bond (or face of the ring) is called trans. Trans looks like a z-shape. Many hydrogenated fats happen to have the trans formation.
    References :

  4. A trans fat is a specific type of partially hydrogenated oil.

    I can’t draw diagrams here, but this wikipedia article does a good job explaining the difference. The partially hydrogenated oils in your margarine are all in the cis configuration.

    http://en.wikipedia.org/wiki/Trans_fat
    References :

  5. hydrogenated means that there are hydrogens bonded to the fat making it harder to break down

    saturated fats are saturated with hydrogen meaning that they are really hard to break down

    i guess trans fats are just partialy saturated fats that dont break down very well and raise your cholesterol
    References :

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