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Effects of Freezing on the Viability of the Eggs of Ascaris suum

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The eggs of Ascaris sum from the feces of pigs were subjected to freezing at -80°C for different periods. It was found that 3 hours of freezing of a suspension of eggs in water was required to induce 3 logs of inactivation as determined by viability assessment using embryonation.

Keywords: Ascaris; freezing; larvae; psychrophilic; viability

Document Type: Research Article


Publication date: January 1, 2009

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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