Background: Salmonella enterica and Campylobacter jejuni are amongst the more prevalent bacterial pathogens that cause foodborne diseases. These microorganisms are common contaminants of poultry and poultry products. This study was aimed to evaluate the antibacterial activity of metallic copper surfaces on these important enteropathogens, and to determine the potential acquisition of copper by food exposed to this metal.

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The inner protein shell of human rotavirus consists of a single polypeptide called VP6 which was removed from the single-shelled virus by treatment with CaCl2, leaving the viral core. The core thus obtained was unable to transcribe. However, the addition of a supernatant containing VP6 in the absence of Ca2+ restored the transcriptional activity. VP6 obtained from different electropherotypes and serotypes was able to restore transcriptional activity to homologous and heterologous cores. Viral cores obtained after incubation with purified VP6 had electron microscopic characteristics, polypeptide compositions, and transcription products similar to those of the single-shelled virus. The results suggested the successful in vitro reconstitution of the single-shelled virus.

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