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- Rosalind S Gibson
- Professor of Human Nutrition University of Otago Dunedin, New Zealand
説明
<jats:title>Abstract</jats:title> <jats:p>The assessment of the iron status of the population is critical: iron deficiency is the most frequently occurring micronutrient deficiency in low-income and industrialized countries. The human body contains about 2.5 to 4 g of elemental iron. Of this, about 70% is present in the hemoglobin, the oxygen-carrying pigment of the red blood cells that plays a critical role in transferring oxygen from lung to tissues. Hemoglobin is made up of four heme subunits, each with a polypeptide chain of globin attached. Each molecule of heme consists of a protoporphyrin IX molecule with one iron atom. In addition, about 4% of body iron is present in myoglobin, the oxygenbinding storage protein found in muscle. The structure of myoglobin is similar to hemoglobin, except that it contains only one heme unit and one globin chain.</jats:p>
収録刊行物
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- Principles Of Nutritional Assessment
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Principles Of Nutritional Assessment 443-476, 2005-03-31
Oxford University PressNew York, NY
