Another point to consider on moddifying vegi oils is the type/species of the oil, the actual oil makeup can vary due to climate the plant is grown in and subspecies/variety therefor an oil grown in the USA may not in fact behave the same as in Italy or Australia. Also a lot of the cooking oil crop in the USA is grown from GE enhanced species wereas those grown here in Australia are not. I cant remember the type of grain crop but one grown in the US has a gene from the castor plant transplanted into it to make it produce an oil suitable for bio fuels, the main market is for cooking oils and into Europe for bio diesel production.
Stewart
Back in this thread I mentioned I tried moddifying Rice Bran oil - this was a failure, later reseach revealed this oil to be high in vit E which makes the oil very stable-ie resistant to change by heat or oxidisation makeing it a healthy salad oil or a gooid cooking oil but unsuitable for our use.
So an oil may look good as a candidate for modifying , but if the Vit E level is too high it wont be suitable, is there a way to strip the vit E from the oil ?
Castor oil is stabilised by the addition of vit E to stop it polimeriseing and forming varnish's