Nutrient Analysis: Soy Lecithin

Soy Lecithin

I'm using Bob's Red Mill Soy Lecithin Granules.

My analysis of Soy Lecithin proved interesting, as I'm not completely convinced that the USDA's "Oil, Soybean Lecithin" is close enough to the same product to do a comparison. Regardless, it is what I used, but I'd sure like to see some more convincing evidence that I'm using the right numbers here.

Additionally, I'm starting to question the Omega-3 and Omega-6 numbers that I'm finding on sites like nutritiondata.self.com. Take, for instance, the Omega-3 listed for 4g of Soy Lecithin on the site. If you dig into the details there you can see that there is 231mg of 18:03 fatty acids. My understanding is that 18:3 fatty acid can be differentiated into 18:3 n-3 and 18:3 n-6. The n-3 version is an Omega-3 fatty acid and the n-6 version is an Omega-6 fatty acid. Since the USDA figure doesn't seem to differentiate, so I'm uncertain how self.com does. At the moment, though, my understanding of fatty acids is very rudimentary. So I will use the figures I find, even though I question them. As I discover more I'll update these numbers. If you know more, please comment!

Here are the numbers I've chosen to use:

	Packaging	makesoylent	cronometer	USDA	Chosen Value	Justification
Serving Size	8g	8g	8g	8g	8g
Calories (kcal)	60	61	61	61	61	All sources agree per USDA rounding rules.
Carbohydrates (g)	1	0	0	0	.5	Using the smallest value that will round up to 1 per USDA rounding rules
Protein (g)	0	0	0	0	0	All sources agree
Total Fat (g)	4	8	8	8	4.49	Using the largest value that will round down to 4 per USDA rounding rules
Saturated Fat (g)	1	0	1.2	1.2	0.945	Using USDA Value, but adjusting for reported total fat: 1.2*4.49/(1.2+.878+3.625)
Monounsaturated Fat (g)		0	.9	.878	.691	Using USDA Value, but adjusting for reported total fat: .878*4.49/(1.2+.878+3.625)
Polyunsaturated Fat (g)		0	3.6	3.625	2.854	Using USDA Value, but adjusting for reported total fat: 3.625*4.49/(1.2+.878+3.625)
Omega-3 Fatty Acids (g)		0.41	.4	0	.41	UNJUSTIFIED, but backed up by nutritiondata.self.com
Omega-6 Fatty Acids (g)		3.21	3.2		3.21	UNJUSTIFIED, but backed up by nutritiondata.self.com
Total Fiber (g)	0	0	0	0	0	All sources agree
Solubule Fiber (g)		0			0	All sources agree
Insolubule Fiber (g)		0			0	All sources agree
Cholesterol (mg)	0	0	0	0	0	All sources agree
Vitamin A (IU)		0	0	0	0	All sources agree
Vitamin B6 (mg)		0		0	0	All sources agree
Vitamin B12 (ug)		0	0	0	0	All sources agree
Vitamin C (mg)		0	0	0	0	All sources agree
Vitamin D (IU)		0	0	0	0	All sources agree
Vitamin E (IU)		1	1.05	.43329	.43329	Using USDA Value
Vitamin K (ug)		15	14.7	14.7	14.7	All sources agree
Thiamin (mg)		0	0	0	0	All sources agree
Riboflavin (mg)		0	0	0	0	All sources agree
Niacin (mg)		0	0	0	0	All sources agree
Folate (ug)		0	0	0	0	All sources agree
Panthotenic Acid (mg)		0	0	0	0	All sources agree
Biotin (ug)		0			0	All sources agree
Choline (mg)	50% of 550mg is approx. 275mg	28	28	28	250	NEEDS VERIFICATION. The front of the packaging calls this out explicitly. It is funny that the USDA figure is 10% of the packaging figure. This could indicate that I'm using a bad base element in choosing Oil, Soybean Lecithin or that there is a unit error somewhere along the way.
Calcium (g)	2% of 1g approx. 0.02g	0	0	0	.01	Using lowest value that will round up to 2% per USDA rounding rules
Chloride (g)		0			0	All sources agree
Chromium (ug)		0			0	All sources agree
Copper (mg)		0	0	0	0	All sources agree
Iodine (ug)		0			0	All sources agree
Iron (mg)	2% of 8mg approx. 0.16mg	0	0	0	.08	Using the lowest value that will round up to 2% per USDA rounding rules
Magnesium (mg)		0	0	0	0	All sources agree
Manganese (mg)		0	0	0	0	All sources agree
Molybdenum (ug)		0			0	All sources agree
Phosphorus (g)		0	0	0	0	All sources agree
Potassium (g)		0	0	0	0	All sources agree
Selenium (ug)		0	0	0	0	All sources agree
Sodium (g)	0	0	0	0	0	All sources agree
Sulfur (g)		0			0	All sources agree
Zinc (mg)		0	0	0	0	All sources agree