Sunflower lecithin powder: Choline and omega3/6?


#1

So, I’ve been trying to sort out Sunflower lecithin powder as an ingredient, but it hasn’t been easy getting more detailed information than is listed on the nutritional label. I’ve finally managed to get an answer from a manufacturer though, when asking about the choline, omega-3 and omega-6 content. I’m just not quite sure yet what it means…

It looks like my 15g serving of sunflower lecithin powder has:

2520 mg Phosphatidylcholine
1720 mg Phosphatidylinositol
940 mg Phosphatidylethanolamine

I’m beginning to gather that to determine the choline content from this, I’m going to have to find the chemical formula for phosphatidylcholine, determine the percentage of the mol weight of the choline portion and use it to determine the gram weight. It’s been a while since I’ve taken a chemistry course, but I can probably manage that (though I wouldn’t turn down anyone offering to just tell me the answer now.)

Can someone shed some light for me on the omega-6 and omega-3 content though? I gather the manufacturer expected that the other two lines would give me that information, but I don’t see either compound in my list of omega-3 or omega-6 fatty acids. Turns out that’s because they are phospholipids. I’m not clear on the relationship between phospholipids and fatty acids. It looks like phospholipids break down into fatty acids, but I’m not clear on what I’m supposed to do to determine the omegas from this information. Any help here?


#2

http://www.convertunits.com/molarmass/ is an excellent tool.

http://www.convertunits.com/molarmass/C42H82NO8P

http://www.chemindustry.com/apps/chemicals?m=s&t=phosphatidylcholine gives you the formula.

I’d guess the upper bound of choline content could be calculated by subtracting the relative choline constituents from the whole, assuming independent chemical structures, but that’s probably gonna be off. I don’t like chemistry. :stuck_out_tongue:


#3

Any luck in figuring this out? I’ve been looking through sunflower lecithin sources and some have those same ingredients


#4

Ah, found this:

From Choline Supplemented as Phosphatidylcholine…

The amount of choline in 34 g of the phosphatidylcholine supplement was 2.6 g

The authors cite this paper as the source for that ratio. Think I’ll go with this when figuring things out. Feel free to comment on the veracity of either of these - I only just skimmed through them.


#5

This article also has some information which says

Phosphatidylcholine only contains 13% choline based on weight.

Not sure how reliable this source is - it doesn’t provide any references for its claims. I’ve also seen the words ‘choline’, ‘phosphatidylcholine’, and ‘lecithin’ used interchangeably… which is annoying, because other sources show them as distinct.


#6

They can be used interchangeably in context as choline sources of varying degrees of efficiency. They are distinctly different substances, but all provide choline.


#7

Don’t know how accurate this info is but it does try to answer the question.


#8

Looking for the same thing I found this:
Lekithos organic sunflower lecithin granules LABEL
The omega ratio is roughly 90% Omega 6, and 10% Omega 3. So some fish or flax seed oil would do well to balance this out. I have read different 6/3 optimum ratios ranging from 1:2 to 2:1. It may depend on the individual.

From the label:
Total Fat 3g
Saturated Fat <1g
Total Carbs <1g
Dietary Fiber 3g
Phosphatidylcholine 385mg
Phosphatidylinositol 315mg
Phosphatidylethanolamine 245mg
Phosphatidic Acid 140mg
Linoleic Acid (Omega-6) 1015mg
ALA (Omega-3) 120mg


#9

I was also trying to figure out how much of the fat it omega 6. This is also a great source of all kinds of information:
http://www.math.ucsd.edu/~ebender/Health%20&%20Nutrition/Nutrition/oil_good.html

OIL TOTAL SAT POLY MONO COMMENTS
flaxseed 14 1 10 3 7 omega-3; 2 omega-6; 2 omega-9 (mono)
sunflower seed 14 2 9 3 0 omega-3; 8 omega-6
75% Omega 6?

http://www.omega-9oils.com/omega-9-advantage/healthier-profile/omega-3-6-9.htm
Omega-3 and omega-6 fatty acids are two types of polyunsaturated fat
Omega-9 fatty acids are from a family of monounsaturated fats