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Title: Oxalate: Effect on calcium absorbability

Absorption of calcium from intrinsically labeled Ca oxalate was measured in 18 normal women and compared with absorption of Ca from milk in these same subjects, both when the test substances were ingested in separate meals and when ingested together. Fractional Ca absorption from oxalate averaged 0.100 +/- 0.043 when ingested alone and 0.140 +/- 0.063 when ingested together with milk. Absorption was, as expected, substantially lower than absorption from milk (0.358 +/- 0.113). Nevertheless Ca oxalate absorbability in these women was higher than we had previously found for spinach Ca. When milk and Ca oxalate were ingested together, there was no interference of oxalate in milk Ca absorption and no evidence of tracer exchange between the two labeled Ca species.
Authors:
;  [1]
  1. (Creighton Univ., Omaha, NE (USA))
Publication Date:
OSTI Identifier:
5227439
Resource Type:
Journal Article
Resource Relation:
Journal Name: American Journal of Clinical Nutrition; (USA); Journal Volume: 50:4
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; CALCIUM; INTESTINAL ABSORPTION; ABSORPTION SPECTRA; BIOLOGICAL AVAILABILITY; MAN; MILK; OXALATES; SCINTILLATION COUNTING; SPECTROPHOTOMETRY; TRACER TECHNIQUES; ABSORPTION; ALKALINE EARTH METALS; ANIMALS; BIOLOGICAL MATERIALS; BODY FLUIDS; CARBOXYLIC ACID SALTS; COUNTING TECHNIQUES; ELEMENTS; FOOD; ISOTOPE APPLICATIONS; MAMMALS; MATERIALS; METALS; PRIMATES; SPECTRA; UPTAKE; VERTEBRATES; 550501* - Metabolism- Tracer Techniques