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| | International Dairy Foods Association - IDFA - Industry Facts |
 | | Milkfat carries the fat soluble vitamins A, D, E, and K. The solids-not-fat portion consists of protein (primarily casein and lactalbumin), carbohydrates (primarily lactose), and minerals (including calcium and phosphorus). |
 | | Addition of vitamins A and D is optional, but if added, vitamin A must be present at a level of not less than 2,000 International Units (I.U.) Per quart; vitamin D is optional, but must be present at a level of 400 I.U., if added. |
 | | The addition of certain characterizing ingredients and lactic-acid producing bacteria may permit, for example, the product to be labeled "cultured buttermilk," "cultured lowfat buttermilk," or "cultured nonfat milk buttermilk" depending upon the level of milkfat in the finished product. |
| www.idfa.org /facts/milk/define.cfm (513 words) |
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