Absorption of Nonheme Iron

Narins, Dorice M.

doi:10.1007/978-1-4684-3779-9_3

Cited by 3 publications

(2 citation statements)

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“…Both numbers, 20.8 and 48.2 uM, may be close to intestinal iron concentration, assuming that humans ingest some 6 mg nonheme iron per 1000 kcal per day (Narins 1980). It may also be expected that a large portion of this iron may be in the form of the poorly absorbed Fe(OH) 3 .…”

Section: Instantaneous Binding Of Fe(iii) To B Thermophilummentioning

confidence: 91%

The Binding of H₂O₂‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

Kot

Bezkorovainy

2000

Journal of Food Science

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Fe(OH) 3 was produced from Fe(II) and H 2 O 2 by methods associated with high and low free radical activity. More Fe(OH) 3 became bound to Bifidobacterium thermophilum when the former type of method was used, and protoplasting experiments indicated that binding to both the cell walls and membranes was enhanced. Binding to cell walls was instantaneous, whilst that by the membranes increased with time using both methods. Al(III), a lipid peroxidation enhancer, increased Fe(OH) 3 binding by membranes only. It was concluded that B. thermophilum is able to abate increased activity of free radicals not only by scavenging them, but also by removing iron from their environment.

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Section: Instantaneous Binding Of Fe(iii) To B Thermophilummentioning

confidence: 91%

The Binding of H₂O₂‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

Kot

Bezkorovainy

2000

Journal of Food Science

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“…In humans, iron absorption has been studied extensively using radioactive iron (Varela, 1971;Marx, 1979a,b;Narins, 1980;Valberg and Flanagan, 1983). Measurement of the different steps in iron absorption is possible when a non-absorbable indicator (51CRC13 or 131BaSO4) is added to the radioactive iron (Boender and Verloop, 1969;Marx, 1979c).…”

Section: Introductionmentioning

confidence: 99%

Mucosal uptake, mucosal transfer and retention of iron in veal calves

et al. 1993

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A method for studying iron absorption in humans was adapted to veal calves. Three 10-week-old calves with moderate (calves 1 and 2) or severe (calf 3) iron deficiency were given an abomasal injection of 59Fe and 51Cr and all their faeces were collected over 15 days in order to measure mucosal uptake, mucosal transfer and retention of iron. The mucosal uptake was 62.2, 53.4 and 71.8% in calves 1, 2 and 3, respectively. The iron retention measured 14 days after administration of the test dose was 57.4, 52.3 and 56.4% in calves 1, 2 and 3, respectively. Maximal plasma activity was found in all three calves between 1 1/2 and 2 h after injection of the test dose. The plasma activity decreased rapidly, with a slight increase between the 5th and the 10th hour. After 21 h, less than 0.25% of the injected dose was still present in 1 litre of plasma. Not all the 51Cr was recovered in the faeces. No 59Fe was found in the urine but some 51Cr could be detected. The results of this study show that the method described is useful for measuring the different steps of iron absorption in iron-deficient veal calves.

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Dietary factors influencing non-heme iron absorption

Storcksdieck¹

2007

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Absorption of Nonheme Iron

Cited by 3 publications

References 212 publications

The Binding of H₂O₂‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

The Binding of H₂O₂‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

Mucosal uptake, mucosal transfer and retention of iron in veal calves

Dietary factors influencing non-heme iron absorption

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Absorption of Nonheme Iron

Cited by 3 publications

References 212 publications

The Binding of H2O2‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

The Binding of H2O2‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

Mucosal uptake, mucosal transfer and retention of iron in veal calves

Dietary factors influencing non-heme iron absorption

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Product

Resources

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The Binding of H₂O₂‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production

The Binding of H₂O₂‐Generated Fe(III) to Bifidobacterium thermophilum Depends on the Method of its Production