Omega 6 to 3 Ratio Beef Tallow Mercola

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At the Burnsides Laboratory at the University of Illinois, Champaign-Urbana, we carried out an analysis of the fatty acids (fat molecules) in grain-fed and grass-fed beef tallow. The sample of grass-fed tallow came from a farm in western Maryland; the grain-fed tallow was purchased in a supermarket in southern Maryland. This research was funded by the Weston A. Cost Foundation.

To explore the difference in the fat acid contour between grass-fed and grain-fed beef tallow, we analyzed one sample of each type by gas chromatography, a method used to separate and quantify private fatty acids. See the table beneath for the concentrations of specific fatty acids.

The largest differences between the 2 samples were the total concentrations of polyunsaturated fat acids (PUFA), and the rest between the omega-3 and omega-6 forms of these fatty acids. Grass-fed tallow had 45 percent less total PUFA, 66 per centum less omega-6 linoleic acid, and four times more than omega-3 alpha-linolenic acrid. The ratio of omega-6 to omega-3 fatty acids was over xvi for the grain-fed tallow but only ane.four for the grass-fed tallow. Whatever the ratios, beef tallow is not a rich source of polyunsaturated fat acids, with merely 3.45 percentage in grain-fed and ane.9 percent of the total in grass-fed.

Thus, while even grain-fed beef tallow has a much lower content of polyunsaturated fatty acids than modern vegetable oils, the amount found in grass-fed tallow is much lower and like to that found in the kokosnoot products that dominate the traditional diets of Pacific Islanders, who have been extensively studied and shown to be free of middle disease. This would allow the use of tallow in the context of a mixed diet that includes other foods naturally rich in polyunsaturated fatty acids, such as fat fish, while still keeping the overall intake of these fatty acids low and like to that constitute in successful traditional diets.

Grass-fed beef is often promoted equally healthy considering of a lower saturated fatty acid content. But saturated stearic acrid was 36 percent higher in grass-fed beefiness (17.45 per centum versus 12.8 percent). Levels of sixteen-carbon palmitic acrid, considered "atherogenic" considering in some studies it raises cholesterol levels slightly, were well-nigh the aforementioned in both samples. Thus, in every bit fatty cuts of beef, there would be a higher content of saturated fat acids in the grass-fed beef. In many traditional diets where the fattiest cuts and the fat itself were sought out, intake of these saturates would likely be considerably higher.

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Fat Acid	Fatty Acid	Grain-Fed		Grass-Fed
Numerical Designation	Common Name	Pct	of Total Fatty	Acids
xiv:0	Myristate	4.8		3.45
14:1	Myristoleate	0.85		0.7
15:0		0.8		0.55
16:0	Palmitate	27.vii		27.45
t-16:i?		0.5		0.7
16:1	Palmitoleate (may include sapienate)	iii.4		2.five
17:0		1.4		1.35
18:0	Stearate	12.8		17.45
t-18:ane	Vaccenate	10.8		3.8
18:1n-9	Oleate	xxx.9		37.55
18:1n-7		1.25		0.85
18:2n-6	Linoleate	iii.25		ane.1
18:3n-three	Blastoff-linolenate	0.ii		0.8
xx:0	Arachidate	0.05		0.1
Putative Conjugated Linoleic Acid (CLA )		0.25		0.three
20:1	Erruciate	0.2		0.ii
twenty:4n-half-dozen + 22:0 A	Arachidonate + Behenate	0.1		0.1
Total SFA		47.65		fifty.4
Total MUFA		47.9		46.3
Full PUFA		3.45		i.9

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Grass-fed tallow also had 65 percent less natural trans fat acids, and 22 percentage more of the monounsaturated oleic acid. Differences in other fatty acids were small. We could not identify conjugated linoleic acid (CLA) conclusively with this method, but we identified a fatty acid that is likely CLA, and its concentrations were identical between the two samples.

In a future issue, we will report the concentration of fat-soluble vitamins in these samples.

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Sidebar

Cod Liver Oil Survey – Preliminary Results
I northward April of 2012, nosotros received an anecdotal report from a midwife of several women experiencing severe postpartum hemorrhages while reportedly following the dietary recommendations of the Weston A. Price Foundation. Concerned that the large amount of omega-3 fatty acids found in cod liver oil could have contributed to the hemorrhages through their claret-thinning backdrop, particularly if not counterbalanced past acceptable liver, egg yolks, and other sources of arachidonic acid, nosotros conducted a survey to determine whether postpartum hemorrhage and vaginal bleeding during pregnancy were associated with the employ of cod liver oil or the dietary recommendations of the foundation. To reduce the risk of bias and increment the amount of information that could be gained from the survey, we circulated the survey widely on the Internet and asked about a large number of foods, perinatal complications, and medications. Over 3,500 women following many different diets completed the survey.
At that place was no association between the type of diet the women reported following and whatever of the complications or medications. Women who reported taking cod liver oil were thirty pct more likely to experience postpartum hemorrhage, but the difference was not statistically meaning (P=0.09), meaning there is a reasonable likelihood the association could be due to chance. Several observations suggest this is unlikely to exist a true biological effect: in that location was no association with the dose of cod liver oil; omega-3 fatty acids are also found in fish oil, only there was no association with the utilize of fish oil; at that place was no association betwixt cod liver oil and the risk of vaginal bleeding during pregnancy; and there was no association between cod liver oil and the use of medications used to control bleeding.
By contrast, cod liver oil was associated with a large (63 percent) and statistically meaning (P<0.001) drop in the risk of preeclampsia, and the magnitude of the driblet in gamble correlated well with the dose of cod liver oil (P<0.001). Since this is an observational study, it cannot demonstrate cause-and-effect relationships, but this association could reflect a protective issue of the fatty-soluble vitamins in cod liver oil.
The data gathered from this survey are voluminous and will be reported in much greater particular in the next event of this journal.

This article appeared in Wise Traditions in Nutrient, Farming and the Healing Arts, the quarterly journal of the Weston A. Toll Foundation, Winter 2013.

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Chris Masterjohn, PhD, is creator and maintainer of world wide web.chrismasterjohnphd.com. Chris is a frequent contributor to Wise Traditions, the quarterly journal of the Weston A. Price Foundation, and is a perennial speaker at the annual Wise Traditions conference. He has written v peer-reviewed publications, and has submitted ii boosted experimental papers for peer review, one of which has been accepted for publication. Chris has a PhD in Nutritional Sciences from the University of Connecticut and has worked as a Postdoctoral Research Associate at the University of Illinois where he studied interactions between vitamins A, D, and K. The contents of this blog represents his independent work and does not necessarily stand for the positions of the Academy of Illinois.

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Source: https://www.westonaprice.org/health-topics/know-your-fats/fatty-acid-analysis-of-grass-fed-and-grain-fed-beef-tallow/

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