trans fatty acids
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Why does the human body handle cis fatty acids better than trans fatty acids?
I know that cis fatty acids are much better than trans ones since the trans fatty acids are linked to heart disease, but I can't grasp the REASON why our body handles cis better than trans. Help please!
the trans formation does not allow the fat molecule to bend so it's more like a molecule of saturated fat. when trans fats are used to manufacture cell membranes and such they do not align properly with other cis fatty acids. basically causing weak spots in the cell membrane which allow virus, bacteria, etc. to penetrate the cell structure. this is why people that consume masses amounts of processed foods high in trans fatty acids are chronically sick.
Why does the body handle cis fatty acids better than trans fatty acids?
I know that cis fatty acids are much better than trans ones since the trans fatty acids are linked to heart disease, but I can't grasp the REASON why our body handles cis better than trans. Help please!
Generally, CIS fatty acids are higher in energy and thus more unstable. So they are more easier to break apart and use up. CIS means "same". Trans means "opposite". CIS fatty molecules have their substituents all on the "same side", so this causes for congestion, and so, at the same time, the tension also creates more energy, but also makes the molecule more unstable. Sometimes, it doesn't need that much prodding. CIS fats can be volatile and destroy themselves with little manipulation. Trans fat molecules have substituents at "opposite" sides, so they are more free and stable, and calm. Trans fats are more stable and have lesser energy, so they our body tends to have a harder time getting rid of these, so they build up sometimes, and clog arteries and stuff like that... that's basically it, if you have anymore questions just email me okay aight, yo peace out yo
What is the difference between saturated /unsaturated fatty acids and cis /trans fatty acids?
I know that saturated fatty acids have all single bonds between their carbon atoms; thus pack tightly and are solid fats. Unsaturated fats have double bonds between their carbon atoms; thus creating a kind of cis / trans fatty acid which is bent...right? So what is the difference between cis and trans fatty acids?

Thank you
A cis configuration means that adjacent hydrogen atoms are on the same side of the double bond.
The rigidity of the double bond freezes its conformation and, in the case of the cis isomer, causes the chain to bend and restricts the conformational freedom of the fatty acid. The more double bonds the chain has in the cis configuration, the less flexibility it has. When a chain has many cis bonds, it becomes quite curved in its most accessible conformations. For example, oleic acid, with one double bond, has a "kink" in it, whereas linoleic acid, with two double bonds, has a more pronounced bend. Alpha-linolenic acid, with three double bonds, favors a hooked shape. The effect of this is that, in restricted environments, such as when fatty acids are part of a phospholipid in a lipid bilayer, or triglycerides in lipid droplets, cis bonds limit the ability of fatty acids to be closely packed, and therefore could affect the melting temperature of the membrane or of the fat.



A trans configuration, by contrast, means that the next two hydrogen atoms are bound to opposite sides of the double bond. As a result, they do not cause the chain to bend much, and their shape is similar to straight saturated fatty acids.
Explain whether trans fatty acids are more likely to be solid and cis fatty acids liquid?
Explain whether trans fatty acids are more likely to be solid and cis fatty acids liquid.
trans, and saturated fats are solid because they are linear. therefore they can easily pack up next to each other and are attracted by van der waals interactions quite easily. however cis unsaturated fats have kinks in their double bonds and therefore are crooked. this makes it difficult for them to fully interact with one another and therefore the individual fatty acids do not share attractions with one another and are liquid, as opposed to a stable solid state like the trans fats
Do trans fatty acids have more hydrogen than unsaturated fatty acids with cis bonds?
I understand that the double bond in a trans fatty acid (trans bond) is different than the bond of an unsaturated fatty acid (cis bond).

But does the process of hydrogenation actually add hydrogen to the fatty acid molecule? If so, where does the extra hydrogen go if one or more of the carbons have double bonds.

A picture of a comparison between the structural formulas would be useful. Also, are trans bonds and cis bonds isomers of each other? Again, if they are, where does the extra hydrogen go?
Notation: It is common practice to draw organic molecules without labeling most of the hydrogen atoms. /\/-COOH means CH3-CH2-CH2-CH2-CH2-COOH
and -COOH is shorthand for a carboxylic acid
CO2H is also commonly used to designate this.

Saturated fats have long, linear hydrocarbons and look like:
/\/\/\/\/\/\/\/\-COOH

Unsaturated fats have double bonds, each double bond increases the degree of unsaturation:
polyunsaturated fats have multiple double bonds can have either type of unsaturation. Double bonds also contribute to a more rigid shape in the molecule and alter its regiochemistry (shape)

cis-fats are unsaturated fats
/\=\/=\/\/\/\/\-COOH * cis bonds drawn to resemble cups - have a curly shape that folds in on itself

trans-fats are also unsaturated fats
/\//\//\/\/\/\/\-COOH * their double bonds are drawn like a zig-zag - resembling a saturated fat

====================================
To answer your main question. Kind of. Cis unsaturated fats on average may have more double bonds than many trans fats you tend to run into. However, this is not a relevant point. Individually, trans bonds have no more hydrogen than cis bonds, the important thing to understand about trans and cis is shape, not hydrogen! Also, fatty acids have varying length, and thereby have variable total hydrogen content. Fatty acids are either saturated with hydrogen or not, but can be unsaturated to varying degrees.

1. It takes a bit of organic chemistry study to really get a sense of what cis and trans actually mean. Do be aware that cis and trans both refer to double bonded molecules, and both are unsaturated fatty acids.

2. Yes, hydrogenation is an addition (as opposed to an elimination) because it removes double [or triple] bonds and adds hydrogen pairs to the formerly multiple-bonded carbons.
/\/\//\/\/\-COOH -> /\/\/\/\/\-COOH

3. Yes, cis and trans isomers are actually a specific type of stereoisomer (shape isomer). The hydrogen goes at the two carbons that previously held the cis or trans double bond.

--------
Why is this interesting?
Saturated fats clog arteries because their orderly shape allows them to stack upon one another forming plaque. Think of vegetable shortening and lard.

Removing hydrogen from saturated fats (dehydrogenation) will form unsaturated fats.
Unfortunately synthetic dehydrogenation does not discriminate between forming cis and trans polyunsaturated fats.

Cis fats have cis bonds that form kinks in the fat's structure. Because of this uneven shape the molecules do not clump together like unsaturated fats do. Cis fats tend to be more "oily" and less "lardy."

Trans fats still have the stacking problem that saturated fats have. The worst problem is trans fats are the least likely to be metabolized, and have a high tendency to accumulate, raising LDL cholesterol and lowering HDL cholesterol. Partially hydrogenating a cis fat increases its heat tolerance and its shelf life. Trans fats are also formed as a side effect of this process (sometimes the bond flips).

Don't trust my ASCII art to get an idea of how these molecules look. Check out some of the links of fatty acids I listed in my sources.
Describe how trans fatty acids are manufactured?
Provide a detailed explanation of how trans fatty acids are manufactured.
**PLEASE NOTE: Im only a year 11 student, and I'm using these questions as research points for a major Organic Chem assignment, so please use easy to understand language, Thanks!
Start here:
en.wikipedia.org/wiki/Trans_fatty…
Do trans fatty acids cause buildup of fat in your abdomen?
Do trans fatty acids cause buildup of fat in your abdomen?
NO!! in your blood vessels only!!

carby starchy foods do the fat in the abdomen.
There are claims saying that adding trans fatty acids to food improves the taste. Is that true?
There are claims saying that adding trans fatty acids to food improves the taste.

Is that true?

Are there any scientific researches / theories that supported the claim?
transfats can keep cookies,snacks,biscuits,chipps fresh,crinzy,crackery,oily,creamy and thus it can attract to eat those as tasty,but it make person fatty,bulky,heavy in the long run and those are forbidden for obesque patients with high blood pressure (HTN),high LDL-cholesterol or hyperlipidomea,coronery artery diseasess or heart diseases and diabetes.
Hydrogeneted vegetable oil is a potential transfat regulerly used in chipps,biscuits,snacks,cakes..etc. most predominently
What are trans fatty acids and where do they come from?
A young friend says they come from animal fats. I say they come from vegetable fats. I need factual information and sources.
They are mostly man-made to make the food last longer on the shelf. They don't taste any different. This is from wikipedia.com:

Most trans fats consumed today, however, are industrially created as a side effect of partial hydrogenation of plant oils — a process developed in the early 1900s and first commercialized as Crisco in 1911. Partial hydrogenation changes a fat's molecular structure (raising its melting point and reducing rancidity) but this process also results in a proportion of the changed fat becoming trans fat.

Unlike other fats, trans fats are neither required nor beneficial for health.[1] Eating trans fat increases the risk of coronary heart disease.[2] For these reasons, health authorities worldwide recommend that consumption of trans fat be reduced to trace amounts. Trans fats from partially hydrogenated oils are generally considered to be more of a health risk than those occurring naturally.[Trans fats occur naturally in the milk and body fat of ruminants (such as cows and sheep) at a level of 2-5% of total fat.[4]
What are trans fatty acids and saturated fats?
What are trans fats? Why are they bad for you? And what is the difference betweent trans fats and saturated fats?
Trans fats are monounsaturated or polyunsaturated fats that have been partially hydrogenated to make them change from their natural liquid state to a solid (as with, for example, corn oil margerine). Saturated fats are fats found in animal products (meat, dairy, etc.). Consumption of transfats has been linked to a variety of health disorders and is not good for you in any amount. Saturated fats are unhealthy for you in excess, but are okay in small amounts.

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