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Nutrition

March 4, 2013

Nutritional Value; Comparing Quinoa, Wheat & Rice

mixed grains

According to studies Quinoa has comparable levels of amino acids to wheat, soy and skim milk. Quinoa however contains an amino acid, lysine which normally isn’t found in vegetable proteins. Lysine is typically found in meat, fish and eggs. Have a look at the table below that shows comparable levels of essential amino acids between wheat and Quinoa; however Quinoa does not contain the gluten usually found within breads.

Also if we look at the comparison of Quinoa’s mineral composition in Table 2 against that of rice and wheat we will see the glaring superiority that Quinoa has over the alternatives. Quinoa has 20 times the amount of Calcium as Rice and about 15 times the amount of Iron; 9 times the amount of Calcium and 3 times the amoung of Magnesium. Wheat also trails Quinoa in its nutritional value with half as much Calcium and four times less Iron. It should be a no brainer to choose Quinoa the next time you’re at your local grocer.

Table 1: Amino Acid Content (g/100g protein)

Amino Acid 

Quinoa Wheat
Isoleucine 4% 3.8%
Leucine 6.8% 6.6%
Lysine 5.1% 2.5%
Phenylalanine 4.6% 4.5%
Tyrosine 3.8% 3%
Cystine 2.4% 2.2%
Methionine 2.2% 1.7%
Threonine 3.7% 2.9%
Tryptophan 1.2% 1.3%
Valine 4.8% 4.7%

 

 

 

 

 

 

 

 

Source: Johnson, R. and R. Aguilera. 1980. Processing Varieties of Oilseeds (Lupine and Quinoa), In: Report to Natural Fibers and Foods Commission of Texas, 1978 – 1980 (Reported by D. Cusack, 1984, The Ecologist 14:21 – 31)

Table 2: Comparative Mineral Composition (mg/100g protein)

Quinoa Rice Wheat
Calcium (Ca) 1487 69 503
Phosphorus (P) 3837 1378 4677
Iron (Fe) 132 7 38
Potassium (K) 9267 1183 5783
Magnesium (Mg) 2496 735 1694
Manganese(Mn) 100 23 39
Chlorine (Cl) 1533 NR 633
Copper (Cu) 51 2 7

Source: Kosiol, M.J. (1992). Chemical composition and nutritional evaluation of quinoa (Chenopodium quinoa Wild). In Journal of Food Composition and Analysis, Vol. 5, n 1, pp 36 – 68.

Feel free to leave your comments, questions or your own personal input in the comments section below.

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About the Author

Rich Thurman MA, CSCS CPT
Native of San Francisco, Rich gained most of his experience as a personal trainer in the San Francisco Bay Area, working in physical therapy clinics, The Olympic Club and assisting the Head ATC at City College of San Francisco. Rich has a bachelors degree in Physiological Science from UCLA and a Masters degree in Sports Management from USF. Rich has traveled the world learning, growing and spreading his passion for nutrition, health and fitness. Rich is certified by the National Strength & Conditioning Association, (NSCA) as a Personal Trainer and Strength & Conditioning Coach. Rich offers Fitness Consulting & Personal Training, Body Transformation Bootcamps, Corporate Wellness and Sports Conditioning Training. Rich is primary author for The Fitness Library and has written for many other publications, magazines and blogs. In his free time, Rich enjoys reading, traveling, writing poetry, listening to music, lifting weights of course and Salsa Dancing.




Tammi Kibler says:

I love quinoa! Thank you for putting this chart together for comparisons.

You’re welcome Tammi, there are also some Qunioa recipes here as well. Thanks for your comments.


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