Publications
Detailed Information
Physico-chemical characterization-based safety evaluation of nanocalcium
Cited 17 time in
Web of Science
Cited 20 time in Scopus
- Authors
- Issue Date
- 2013-12
- Publisher
- Elsevier BV
- Citation
- Food and Chemical Toxicology, Vol.62, pp.308-317
- Abstract
- Nano- and microcalcium provided from the KFDA were compared in terms of physico-chemical properties. Calcium samples were tested using EF-TEM and X-ray diffractometry to check for size/morphology and crystal formation, respectively. Two samples of nano- and microcalcium were selected for further evaluation by FE-SEM, DLS (nano-size, 200-500 nm; agglomerate, >5 mu m; micro-size, 1.5-30 mu m), and electron spin resonance. Both samples were heterogeneous in size, existed as single crystal and aggregated form, and did not generate reactive oxygen species. The specific surface area of nano- and microcalcium measured by N2 Brunauere Emmette Teller method was 12.90 +/- 0.27 m(2)/g and 1.12 +/- 0.19 m(2)/g, respectively. Inductively coupled plasma optical emission spectrometry analysis revealed the release of 2-3 times more calcium ion from nano- compared to microcalcium at pH 5 and 7. Genotoxicity and acute single-dose and repeated-dose 14-day oral toxicity testing in SD rats performed to evaluate the safety of nanocalcium did not reveal toxicity. However, long-term monitoring will be required for an unequivocal conclusion. A nanocalcium dose of 1 g/kg is recommended as the maximum dose for repeated dose 13-week oral toxicity. Further studies could provide details of toxicity of nanocalcium on the repeated dose 13-week oral toxicity test. (C) 2013 Elsevier Ltd. All rights reserved.
- ISSN
- 0278-6915
- Files in This Item:
- There are no files associated with this item.
- Appears in Collections:
Item View & Download Count
Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.