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RE: Hydrogenated fats vs Trans Fat - Apr. 24 2008 14:42:30
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Tony Barnes
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Sounds good mate 
As it goes, my fat intake is remarkably low....   lol - I tend to average around the 100g mark, but can sail through 300g on days when I let things go a little..
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RE: Hydrogenated fats vs Trans Fat - Apr. 24 2008 19:21:24
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BYF1
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damaged fats is somthing i've never really grasped.
what oil's should we be cooking with instead of veg oil? is rapeseed or sunflower anygood or are all these simply veg oils.
what is the best type of olive oil to use, extra virgin, virgin, normal; for cooking with.
i rarely eat fried food but eat a fair bit of roasted veg and potatoes what would be the most suitable that isn't expensive and has a good flavour? what would you choose for frying and roasting in?
these days variations of veg oils are marketed as being healthy as there lower in saturated fat than animal fat or butter, but I'm guessing that there probably worse for our health than the old school ones.
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RE: Hydrogenated fats vs Trans Fat - Apr. 24 2008 22:26:08
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Tony Barnes
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lol - answers to most of that in this thread bud!
For cooking, use virgin oil if you can get it, extra if you can't. Extra is ideal for salads, etc. Other good cooking oils are butter, ghee, lard, animal fats, etc, etc. High in mono/sats
The fact that vegetable oils on shelf get away with some of the health claims they do makes my blood boil (omega 3 rich deep fat fryer oil FFS!). They are just standing one step ahead of a slowly evolving public knowledge.
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RE: Hydrogenated fats vs Trans Fat - Apr. 25 2008 0:12:04
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Chaos
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quote:
ORIGINAL: Tony Barnes
It will Nige, just less.
A fat is held in it's bent configuration by the double bonded carbon atoms. Day to day, whilst all the single bonded ones spin around on their axis, the double ones scarcely shift because of the energy required to overcome the pi aspect. Stick in enough heat and it will spin. The total amount of transfat at any given time will be the result of an equation that balances the amount of fat that has remained cis, the amount that has gone trans, an the amount that has gone trans but returned to cis. Someone with a good organic chemistry background may be able to help us there!!
Anyway, the less double bonds there are in the fat being heated, the lower the chance of it ending up a transfat, so although olive oil will turn a bit, it is less offendable than more unsaturated oils like sunflower, and far less than a fish oil (taken out of a fish - if the fish it's held in a membrane, i.e. cooking a fish, this kind of rotation isn't gonna be possible/far harder to achieve). The lower amount of double bonds available to oxidise back up the benefits of cooking with more saturated oils.
Chris - what is the amount of fat in the product? Are there any other fat sources in the ingredients? If it looks like all the fat comes from veg oil, and it's a few g per serve, not great. It's likely that it would be better to not eat it as a regular thing, but have more as an occasional treat. Also, it' not just trans fats, it's all the other damaged ones that can be in there.
Here is a nice little slide show which helped me to understand a little better what you write.
http://www.hhmi.org/biointeractive/obesity/molfat/index.html
Is this an alright diagram Tony? Some of your info is great & V.Interesting
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RE: Hydrogenated fats vs Trans Fat - Apr. 25 2008 0:21:57
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1MR
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I've been wondering lately, why is vegetable oil so popular and regarded so healthy by the general population? My mother and housemate would swear blind that this is better for you and "less fattening" than butter or other heavily saturated fats.
I'm going to copy all your info above Tony and put it into a couple of paragrahps to print off and wave in people's faces
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RE: Hydrogenated fats vs Trans Fat - Apr. 25 2008 8:49:49
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Tony Barnes
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Chaos - yes, that's spot on, nice link
lol, I should of found something like that a long time ago - will use it in future to show what the double bonded carbon rotation does to the structure of the fat.
1MR - veg oil is popular because bad science made it so back in the day. Since then continued bad governmental advice has secured it's place in people's hearts as a good thing in the diet. Yey!
I actually had to remove some information we had in a leaflet pertaining to the damage that veg oil can do, because under UK food law you aren't allowed to make a claim that another food on the market is detrimental to health. Great idea in theory, stops tit-for-tat badmouthing, but this is an obvious case where IMO it's leaving consumers up the swanny.
With regards to "less fattening" - veg oils are probably more fattening than butter, despite holding same kcals, because butter has more short chain saturates that will burn very easily, and the damaged fats in veg oil will disturb proper fat metabolism...
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RE: Hydrogenated fats vs Trans Fat - Apr. 25 2008 12:29:41
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Nigeepoo
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quote:
ORIGINAL: 1MR
I've been wondering lately, why is vegetable oil so popular and regarded so healthy by the general population? My mother and housemate would swear blind that this is better for you and "less fattening" than butter or other heavily saturated fats. You can blame that on Ancel Keys and his like-minded buddies. Once his Six & Seven Countries Studies (a classic example of cherry-picking the data to suit his agenda) and some other studies on cholesterol were published, veg oil companies started pushing the "sat fats are artery-clogging so use our healthy polyunsaturated vegetable oils instead" message. The rest, as they say, is history. Massive increases in rates of Heart Disease, Diabetes and Cancer have occurred, which have only partly been caused by people eating more and moving less.
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