Emerging Technologies for Nutrition Research Potential for Assessing Military Performance Capability (1997) / Chapter Skim
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Emerging Technologies for Nutrition Research, 1997 Pp.
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quantitated. Even less information is available on the levels of other watersoluble vitamins that may be desirable for performance enhancement.
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which these glucosides represent forms used for storage, transport, and release of the vitamins only now is becoming evident. Pyridoxine-5'-β-D-Glucoside The isolation of a ''bound" form of B6 from rice bran led to its identification as 5'-O-(β-D-glucopyranosyl)
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Figure 18-2 Double-reciprocal plots of the initial uptake rate of [3H] pyridoxine (PN)
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The effect of incubation time on the transport of pyridoxine and its βglucoside into liver cells is shown in Figure 18-4. Though the amount of transported pyridoxine increased significantly throughout the hour during which uptake was measured, the β-glucoside reached an earlier limit near 20 percent that of the free vitamin.
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TABLE 18-1 Results of 50-minute Uptake, Cellular Metabolism, or Enzymatic Treatments of Pyridoxine or its β-Glucoside Compound Uptake Cellular Metabolism Homogenate Supernatant (0.5 µM) (pmol/106 cells)
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studies had been done on this glucoside, its ability to replace riboflavin in the diets of young, growing rats was determined (Joseph and McCormick, 1995)
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Figure 18-7 Effect of incubation time on the transport of [3H] riboflavin (RF)
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Figure 18-8 Dependence of initial rate of [3H] riboflavin 5'-α-D-glucoside uptake (1 minute)
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compound would provide an alternate way of delivering the vitamin, should there be a fault in the conventional transport system. AUTHOR'S CONCLUSIONS AND RECOMMENDATIONS The requirements for micronutrients as related to performance capability are arguably less well understood than requirements for calorie-yielding macronutrients.
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Joseph, T., and D.B. McCormick 1995 Uptake and metabolism of riboflavin-5'-α-D-glucoside by rat and isolatedliver cells .
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Yasumoto, K., H Tsuji, and H
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