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ALERT! This is really erroneous information!
Quote:
Originally Posted by beautyaddict1913 View Post
I haven't posted in this thread in a while but Im still involved! I dont know if this has already been posted but I found this info about ceramides on a hair board when I googled more information about it, and I have been meaning to share.
Oils high in ceramides...(Sorted by percentage)
Safflower oil 78%
Grape seed oil 73%
Poppyseed oil 70%
Sunflower oil 68%
Hemp oil 60%
Corn oil 59%
Wheat germ oil 55%
Cottonseed oil 54%
Soybean oil 51%
Walnut oil 51%
Sesame oil 45%
Rice bran oil 39%
Pistachio oil 32.7%
Peanut oil 32%
Sorry to rain on the parade but we need to clarify this.
That lists refers to linoleic acid percentages, NOT CERAMIDES.
The original list appears here:
http://www.news-medical.net/health/O...leic-Acid.aspx
To my knowledge, there's no natural plant-based oil that contains such high percentages of ceramides as listed in the quoted thread (usual content is way less that 10%). The original poster probably found the erroneously labeled list at the long hair comunity forum (sorry,no link for this one--it's again this forum's rules. But you can look it up. The tread title is " Ceramides" in the "Mane" forum...) The poster there didn't even bother to mention a reference.
I looked up a couple of scientific papers on lipid analysis of various oils. The percentages listed are:
rice oil-- ~1% ceramide
walnut oil-- ~2.3% sphingolipids (wich are mostly but not totally composed of ceramides)
almond oil-- Looks like 22% ceramide out of 10% polar lipids in the total oil sample (90% neutral oils) which represents a correction: ignore this--->ceramide<---- sphingolipid concentration of ~2.2 % and a ceramide concentration of %60 of that for ~1.32% ceramide in the total oil amount (someone check my math):
"Lipid classes of almond oil
The analysis of oil A showed the presence of five lipid classes (Table I). Neutral lipids were found in high amounts (89.9% of total lipids) and the predominant lipid class was the triacylglycerides (84.7%) while the polar lipids represented 10.1% of total lipids. The polar lipids were found to be consisted of 22% sphingolipids and 78% phospholipids. Further analysis of sphingolipids presented two distinctive groups of which type III and type IV ceramides were 60% of total sphingolipids. In the phospholipid class the predominant phospholipid was phosphatidylethanolamine (37% of phospholipids)."
Here's the links to the original research articles:
almond: http://www.znaturforsch.com/ac/v59c/s59c0330.pdf
rice: http://www.journalarchive.jst.go.jp/...om=jnlabstract
walnut:http://www.znaturforsch.com/ac/v57c/s57c0051.pdf
"... Given that several sphingolipids make up 6% of wheat germ oil, we calculate that this serving size of wheat germ oil, 1140 mg, would contain 68.4 mg of ceramides."
I hope it's not too late for me to join!
I need to do more research on if grapeseed is actually a ceramide, because I've read conflicting reports, but that's my staple oil that I use 1-2x a week. I'll also be using ORS Hair Mayo (new formula) every couple of weeks.