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Protein digesibility

bb1fit Posts: 11,105 Joined: 2001/06/30	2004/10/02, 01:35 PM Protein digestibility is measured by seeing how much nitrogen is excreted in the feces compared to the amount of nitrogen which is ingested. A correction is made for the amount of nitrogen which is normally lost in the feces. Therefore, digestibility research examines how much more nitrogen is lost over normal levels when a given protein is fed. If an individual were fed 5 grams of nitrogen (approximately 30 grams of protein) and 1 gram of nitrogen was excreted in the feces, this would represent a digestibility of 80% (4 grams retained divided by 5 grams consumed). Table 1 shows the digestibility for some common proteins. Table 1: Digestibility of common proteins foods Food source Protein digestibility (%) Egg 97 Milk and cheese 97 Mixed US diet 96 Peanut butter 95 Meat and fish 94 Whole wheat 86 Oatmeal 86 Soybeans 78 Rice 76 Source: National Research Council. Recommended Dietary Allowances, 10th ed. National Academy Press, 1989. -------------- If you don't stand for something, you will fall for anything.... bb1fit@freetrainers.com
asimmer Posts: 8,201 Joined: 2003/01/07	2004/10/03, 10:46 AM Thanks, bbfit. i am going to copy this to the FAQs section under protein, okay?
bb1fit Posts: 11,105 Joined: 2001/06/30	2004/10/03, 10:58 AM With my blessing!!:big_smile::big_smile: -------------- If you don't stand for something, you will fall for anything.... bb1fit@freetrainers.com