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AAPS PharmSciTech. 2001 December; 2(4): 28–34.
Published online 2015 February 19. doi:  10.1007/BF02830563
PMCID: PMC2784838

Stability of a second-generation cephalosporin veterinary mastitis formulation after electron beam irradiation

Abstract

This study focused on the chemical stability of the cephalosporin {ie28-1} acid, sodium salt (cephem 1) formulation after electron beam (e-beam) irradiation. The cephem 1 concentrations of samples irradiated at 5, 10, and 15 kilograys for glass vials and low-density polyethylene (LDPE) cannula syringes were not statistically different from the concentrations of the nonirradiated control samples. Samples from each irradiation dose stored in controlled-temperature chambers at 5°C and 30°C for 24 months did not show any concentration changes within statistical limits compared with the nontreated samples. Samples from each irradiation dose stored at 40°C for 12 months also did not show any concentration changes within statistical limits compared with the nontreated samples. The percentage of related substances increased slightly with the increase in ebeam irradiation level and storage temperature, but this increase was within the proposed label claim of 90% to 110% (45–55 mg/g). In conclusion, e-beam sterilization did not affect the chemical stability of cephem 1 intramammary formulation in LDPE cannula syringes, suggesting that e-beam irradiation may be a feasible method for terminal sterilization of this cephem 1 formulation.

Keywords: Cephalosporin, Mastitis, Electron Beam Irradiation, E-beam Irradiation, Chemical Stability

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
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