I am just sincerely concerend that many fellows here would not extract any proper message from your info, that is why I asked.hope you understand that this info in the way it is presented is quite misleading - it is messing up negligible amount of residual hexane in veg oil with the effects obtained in the tests made using approx. 100 times higher than TWA tests on rats (normal practice to demonstrate acute toxic effects) or prolonged for about a rat's life length exposure (another way to demonstrate possible long term effects) - furthermore, performed by INHALATION route.Dear fellows,you can eat your canola, rapeseed, sunflower etc. vegoil, even if it is extracted by hexane and refined by adding acids and alkalies.it is much healthier than raw veg oil, unless you do not have your own HACCP standardized mini pressing facility and make a spoon of fresh one every time you need it to pour on your organic salad. Raw veg oil has good taste (at least sunflower one) and contents useful phospholipides, but in few hours it became absolutely useless as phospholipides make a sediment and lose their useful quality and become a gums. They also are oxidised making no good to your guts. In a few days non-refined veg oil becomes highly acidic and also makes no good to the GIT. Oils like rapeseed or canola, if not extracted and refined, have bad taste and bad odour and sometimes even contain poisonous substances, becasue all plants are protecting their oily endosperms as much as possible. So in order to keep food efficiency and safety, we need to extract oils and refine them.We use hexane not becasue we are stupid or greedy and do want to make you all suffering from demyelinisation or narcotizing effects of hexane. We do that becasue pressing extracts about 70 % of oils maximum (for sunflower, with the best organization of the process), and the rest goes to waste. For other oilseeds, like soybeans, extraction is the ONLY proper way to get the oil, as they are far lower in raw oil content compared to the sunflower or canola. Hexane (low boiling point benzene fraction) is a SAFE way to recover maximum of the oil we grow. Oil has much greater boiling temperature than hexane (approx. 190 and 50 deg C), and multi-stage distillation efficiently removes hexane from your oil before it gets bottled. Further processes, in which extracted oil is several times treated by steam and vacuum, brings residual hexane in a bottled oil to a virtually ZERO.Extraction is the way to bring food to all of us, not only for lucky few millions (not saying about a billion). It is a way to be grateful for each drop of oil which seeds created and waste virtually nothing.it also makes oilseeds meal practically perfect protein source (which was not be so in case of pressing due to high residual oils content) and therefore a valuable cattle and poultry feed.Hope this little bit of info would help you all to stay healthy and happy with your vegetable oil. Do not breathe the oil (gas) from your car oil tank, and you would be safe from any undesirable neurological effects of non-polar alkenes like hexane.hugsYulia, being among other jobs a lab manager on the oilseeds plant.
