2003
DOI: 10.1177/108201303036046
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Comparative Effects of the Fat Extracted from Raw and Fried Sardines Upon Rat Growth and Zinc Bioavailability

Abstract: Three diets containing 8% olive oil, fresh sardine (Clupea pilchardus) oil and oil from sardines fried in olive oil were prepared. After in vitro digestion, soluble (dialysed and non-dialysed) and insoluble zinc fractions were determined. Fresh sardine oil and oil from sardines fried in olive oil provided more dialysed zinc and less insoluble zinc than 8% olive oil. Three groups of growing rats consumed the diets for 28 days. Food intake and body weight values of rats fed 8% olive oil were significantly higher… Show more

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Cited by 4 publications
(4 citation statements)
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“…However, these studies used supraphysiological zinc concentrations and/or a purified or heavily diluted source of DDAH, so we sought to test more physiologically achievable zinc concentrations. We increased the zinc concentrations by 20 or 100 M, concentrations near those found in rat plasma [20 -30 M in rat plasma (43,55,62)] and which can be exceeded in rats fed a high-zinc diet [320 M in the plasma of animals given a 100-fold increase in zinc ingestion compared with control (62)]. It should be noted that we did not measure plasma or erythrocyte zinc concentrations; determination of free vs. bound zinc was beyond the scope of this study.…”
Section: Discussionmentioning
confidence: 99%
“…However, these studies used supraphysiological zinc concentrations and/or a purified or heavily diluted source of DDAH, so we sought to test more physiologically achievable zinc concentrations. We increased the zinc concentrations by 20 or 100 M, concentrations near those found in rat plasma [20 -30 M in rat plasma (43,55,62)] and which can be exceeded in rats fed a high-zinc diet [320 M in the plasma of animals given a 100-fold increase in zinc ingestion compared with control (62)]. It should be noted that we did not measure plasma or erythrocyte zinc concentrations; determination of free vs. bound zinc was beyond the scope of this study.…”
Section: Discussionmentioning
confidence: 99%
“…Inhibiting effects of fish oil on food intake compared with corn oil and olive oil were described in rodents 14, 23, 24. The mechanism involved may increase oxidative stress and tissue damage due to the highly unsaturated nature of LPUFA 9, 25.…”
Section: Discussionmentioning
confidence: 99%
“…Concerning the optimal n ‐3/ n ‐6 ratio, a ratio of 3:1 enhances calcium absorption and ratios of 3:1 or 1:1 increase bone calcium compared with the ratio 1:3 13. However, higher n ‐3 fatty acids intakes ( n ‐6/ n ‐3 of 1:5) induced growth retardation and reduced calcium absorption and retention efficiencies in young rats 14, 15. Martínez et al 16 assessed in preterm infants the influence of LCPUFA supplementation in infant formulas on mineral bioavailability and obtained comparable intake and net retention of calcium and magnesium through a 3 day balance.…”
Section: Introductionmentioning
confidence: 99%
“…High levels of iron, zinc, and copper in the erythrocytes have been associated with increased red cell membrane permeability due to membrane oxidation caused by elevated polyunsaturated fatty acid intake [14,15] . Both infant formulas contained exactly the same fatty acids (manufacturer information), and the iron and zinc levels in red cells were unaffected [7,9] .…”
Section: Discussionmentioning
confidence: 99%