Publication
An alternative framework to conduct inferential statistics for low microbial counts in foods: the poisson-gamma regression
| dc.contributor.author | Gonzales-Barron, Ursula | |
| dc.contributor.author | Cadavez, Vasco | |
| dc.contributor.author | Butler, Francis | |
| dc.date.accessioned | 2018-05-09T09:56:03Z | |
| dc.date.available | 2018-05-09T09:56:03Z | |
| dc.date.issued | 2013 | |
| dc.description.abstract | The objective of this article was to compare four Poisson-gamma regression models to assess the effect of chilling on the concentration of coliforms from beef carcasses. A total of 600 carcasses were sampled before and after chilling at eight large Irish abattoirs, and the total coliforms were determined. With a coded variable (pre-chill/post-chill) as treatment, and extracting the variability of batches nested in abattoirs, random-effects models confirmed that chilling had a decreasing effect on the overall recovery of coliforms. Furthermore, the expected coliforms concentrations on pre-chill and post-chill carcasses were estimated on a CFU/cm2 scale, as well as their between-batch variability. This study introduced an alternative conceptual framework that can find interesting applications in stochastic risk assessment and in the design of more efficient sampling plans. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.citation | Gonzales-Barron, Ursula A.; Cadavez, Vasco; Butler, Francis (2013). An alternative framework to conduct inferential statistics for low microbial counts in foods: the poisson-gamma regression. In Proceedings of International Conference on Food and Biosystems Engineering - FaBE 2013. Skiathos Island, Greece. Vol. 1, p. 522-531. ISBN 978-960-9510-09-7 | pt_PT |
| dc.identifier.isbn | 978-960-9510-09-7 | |
| dc.identifier.uri | http://hdl.handle.net/10198/17612 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | Negative binomial | pt_PT |
| dc.subject | Chilling | pt_PT |
| dc.subject | Coliforms | pt_PT |
| dc.subject | Carcass | pt_PT |
| dc.title | An alternative framework to conduct inferential statistics for low microbial counts in foods: the poisson-gamma regression | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Skiathos Island, GREECE | pt_PT |
| oaire.citation.endPage | 531 | pt_PT |
| oaire.citation.startPage | 522 | pt_PT |
| oaire.citation.title | Proceedings of FaBE 2013 International Conferences on Food and Biosystems Engineering | pt_PT |
| person.familyName | Gonzales-Barron | |
| person.familyName | Cadavez | |
| person.givenName | Ursula | |
| person.givenName | Vasco | |
| person.identifier | R-000-HDG | |
| person.identifier.ciencia-id | 0813-C319-B62A | |
| person.identifier.ciencia-id | 441B-01AB-A12E | |
| person.identifier.orcid | 0000-0002-8462-9775 | |
| person.identifier.orcid | 0000-0002-3077-7414 | |
| person.identifier.rid | A-3958-2010 | |
| person.identifier.scopus-author-id | 9435483700 | |
| person.identifier.scopus-author-id | 9039121900 | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |
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