Efficacy of scallop shell powders and slaked lime for inactivating avian influenza virus under harsh conditions

The efficacy and stability of scallop shell powder (SSP) were investigated, in terms of its capacity to inactivate avian influenza virus (AIV), and compared with slaked lime (SL). An environmental simulation was conducted by emulating sunlight and wet-dry conditions. The powders were collected at co...

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Bibliographic Details
Published in:Archives of virology 2015-10, Vol.160 (10), p.2577-2581
Main Authors: Thammakarn, Chanathip, Tsujimura, Misato, Satoh, Keisuke, Hasegawa, Tomomi, Tamura, Miho, Kawamura, Akinobu, Ishida, Yuki, Suguro, Atsushi, Hakim, Hakimullah, Ruenphet, Sakchai, Takehara, Kazuaki
Format: Article
Language:English
Subjects:
alkalinity
Animal Shells - chemistry
Animals
Antiviral Agents - chemistry
Antiviral Agents - pharmacology
Avian influenza virus
Biomedical and Life Sciences
Biomedicine
Bird migration
Brief Report
Calcium Compounds - chemistry
Calcium Compounds - pharmacology
calcium hydroxide
Ducks
Evolution & development
Immunization
Infectious Diseases
Influenza A virus
Influenza A virus - drug effects
Influenza A virus - growth & development
Influenza in Birds - virology
Medical Microbiology
mixing
neutralization
Oxides - chemistry
Oxides - pharmacology
Pectinidae - chemistry
Poultry
Poultry Diseases - virology
powders
Powders - chemistry
Powders - pharmacology
scallops
solar radiation
titration
Veterinary medicine
Virology
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Summary:The efficacy and stability of scallop shell powder (SSP) were investigated, in terms of its capacity to inactivate avian influenza virus (AIV), and compared with slaked lime (SL). An environmental simulation was conducted by emulating sunlight and wet-dry conditions. The powders were collected at consecutive 2-week intervals under sunlight and upon every resuspension. These materials were tested by mixing them with AIV and incubating the mixture for 3 min or 20 h, followed by AIV titration. At the same time, a pH buffering test was conducted by neutralization with Tris-HCl. The results revealed that SSP and SL have high alkalinity and excellent ability to inactivate AIV. In a simulated harsh environment, SSP and SL retained a satisfactory ability to inactivate AIV within 20 h throughout the experimental procedure. However, SSP was able to inactivate AIV during a short contact period (3 min), even under harsh conditions, and it was more resistant than SL to neutralization.
ISSN:0304-8608
1432-8798
DOI:10.1007/s00705-015-2517-9