Introduction to Human Nutrition

146 Introduction to Human Nutrition functions require adequate, but not excessive, vitamin A status. A number of drugs, includin ...

The Vitamins 147 O CH 3 HO H^3 C CH 3 CH 3 O CH 3 HO CH 3 CH 3 O HO H^3 C CH 3 CH 3 O HO CH 3 CH 3 O H C 3 H C 3 CH 3 CH 3 O CH ...

148 Introduction to Human Nutrition concentrations. This may explain why, although epi- demiological studies have shown a clear ...

The Vitamins 149 exhalation of pentane arising from the catabolism of the products of peroxidation of n-6 PUFAs or ethane arisin ...

150 Introduction to Human Nutrition the large intestine, again into the lymphatic system, cleared by the liver, and released in ...

The Vitamins 151 glutamate chelates calcium ions, and so permits the binding of the blood clotting proteins to lipid mem- branes ...

152 Introduction to Human Nutrition development, and the regulation of apoptosis and cell survival. Vitamin K defi ciency and re ...

The Vitamins 153 Thiaminases that catalyze base exchange or hydrolysis of thiamin are found in microorganisms (including some th ...

154 Introduction to Human Nutrition of the foot, then the muscles of the calf, and fi nally the extensors and fl exors of the th ...

The Vitamins 155 dose of glucose and mild exercise. The test is not specifi c for thiamin defi ciency since a variety of other c ...

156 Introduction to Human Nutrition the vitamin; urinary excretion of ribofl avin after moderately high doses can be two- to thr ...

The Vitamins 157 and key enzymes in fatty acid and amino acid oxida- tion, and the citric acid cycle. The fl avin coenzymes rema ...

158 Introduction to Human Nutrition At intakes of 1.1–1.6 mg/day urinary excretion rises sharply, suggesting that tissue reserve ...

The Vitamins 159 Vitamers and niacin equivalents Two compounds, nicotinic acid and nicotinamide, have the biological activity of ...

160 Introduction to Human Nutrition remarkably lacking in tryptophan, that problems of defi ciency occur. Trigonelline in coffee ...

The Vitamins 161 not clear to what extent urinary excretion of trigonel- line refl ects endogenous methylation of nicotinic acid ...

162 Introduction to Human Nutrition Although the nutritional etiology of pellagra is well established, and tryptophan or niacin ...

The Vitamins 163 descriptor, with “pyridoxol” as the specifi c name for the alcohol. The vitamers are metabolically intercon- ve ...

164 Introduction to Human Nutrition hydrolyzed to pyridoxal, which can cross cell mem- branes, by extracellular alkaline phospha ...

The Vitamins 165 Requirements of infants Estimation of the vitamin B 6 requirements of infants presents a problem, and there is ...