Nutrient Loss Table


Whole Grain to Refined Flour

As you can see, there is a significant difference in nutrients and vitamins when comparing whole grains to unenriched refined flour.

(Compiled from the United States Department of Agriculture web site.)

Per 100 grams Whole Grains Unenriched Refined Flour  Nutrient Gain/Loss
 
Proximates      
Energy kcal 389 364 7.37%
Energy kj 1418 1523 7.40%
Protein 13.7 10.33 -24.60%
Total Lipid (fat) 1.87 0.98 -47.59%
Carbohydrate 72.57 76.31 5.15%
Fiber 12.2 2.7 -77.87%
Sugars 0.41 0.27 -34.15%
       
Minerals      
Calcium 34 15 -55.88%
Iron* 3.88 1.17 -69.85%
Magnesium 138 22 -84.06%
Phosphorous 346 108 -68.79%
Potassium 405 107 -73.58%
Sodium 5 2 -60.00%
Zinc 2.93 0.7 -76.11%
Copper 0.382 0.144 -62.30%
Manganese 3.799 0.682 -82.05%
Selenium 70.7 33.9 -52.05%
       
Vitamins      
C 0 0 0.00%
B-6 0.341 0.044 -87.10%
Thaimin* 0.447 0.12 -73.15%
Riboflavin* 0.215 0.04 -81.40%
Niacin* 6.365 1.25 -80.36%
Pantothenic Acid 1.008 0.438 -56.55%
Folate mcg 44 26 -40.91%
A 9 0 -100.00%
E 0.82 0.06 -92.68%
K 1.9 0.3 -84.21%
       
Amino Acids      
Tryptophan 0.212 0.127 -40.09%
Threonine 0.395 0.281 -28.86%
Isoleucine 0.508 0.357 -29.72%
Leucine 0.926 0.71 -23.33%
Lysine 0.378 0.228 -39.68%
Methionine 0.212 0.183 -13.68%
Cystine 0.317 0.219 -30.91%
Phenylalanine 0.646 0.52 -19.50%
Tyrosine 0.4 0.312 -22.00%
Valine 0.618 0.415 -32.85%
Arginine 0.642 0.417 -35.05%
Histidine 0.317 0.23 -27.44%
Alanine 0.487 0.332 -31.83%
Aspartic Acid 0.703 0.435 -38.12%
Glutamic Acid 4.325 3.479 -19.56%
Glycine 0.552 0.371 -32.79%
Proline 1.422 1.198 -15.75%
Serine 0.646 0.516 -20.12%
       
Others      
Carotene, Beta mcg 5 0 -100.00%
Lutein + Zeaxanthin mcg 220 18 -91.82%
       
* Enriched white flour adds these nutrients back with synthetic
vitamins and iron.
Source: United States  Department of Agriculture
www.nal.usda.gov