Eggshell fractions containing different particle sized affect mineral absorption but not bone mineral retention in growing rats.
The purpose of this study was to compare the calcium (Ca) bioavailability from eggshell fractions containing different particle size to purified CaCO3in male growing rats. Mineral absorption, bone mineral concentration, and biomechanical properties were evaluated. Mean Ca absorption of rats fed with eggshell diets amounted to 56.2% of the ingested Ca, which is considered high. However, we observed lower Ca absorption in large-sized particle eggshell fraction (ES L) and small-sized particle eggshell fraction groups but similar Ca absorption in intermediate-sized particle eggshell fraction (ES M) compared with the CaCO3group. Rats that received ES M and ES L had higher P and Mg absorption than the CaCO3group. No changes were observed in the bone mineral deposition, weight or mechanical resistance. We conclude that eggshell Ca is well absorbed by the intestine and retained in bones of growing rats, being a low cost alternative to achieve adequate Ca ingestion.
a Graduate Program in Food Science and Technology , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.|b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Bruna Gressler
BG
Milbradt
b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Jéssica Soares
JS
da Silva
b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Andressa Schneiders
AS
Silveira
b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Laila de Oliveira
LO
Dutra
b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Rosana da Rosa
RD
Pereira
b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Maria da Graça Kolinski
MD
Callegaro
b Department of Food Technology and Science, Integrated Center for Laboratory Analysis Development (NIDAL) , Center of Rural Sciences, Federal University of Santa Maria , Santa Maria , Brazil.
Tatiana
T
Emanuelli
D000818:Animals; D001682:Biological Availability; D001696:Biomechanical Phenomena; D001835:Body Weight; D001842:Bone and Bones / Q000187:drug effects / Q000378:metabolism; D002113:Calcification, Physiologic / Q000187:drug effects*; D002118:Calcium / Q000008:administration & dosage* / Q000493:pharmacokinetics*; D002119:Calcium Carbonate / Q000008:administration & dosage / Q000493:pharmacokinetics; D004528:Egg Shell / Q000737:chemistry*; D007408:Intestinal Absorption / Q000187:drug effects; D008297:Male; D010316:Particle Size; D051381:Rats; D017208:Rats, Wistar
D002119:Calcium Carbonate; D002118:Calcium
Eggshell; bioavailability; calcium; magnesium; phosphorus; rats