MétaCan
Menu
Back to cohort
Record W2593102855

Biocontrol of Cronobacter spp. using Bacteriophage in Infant Formula

2013· dissertation· en· W2593102855 on OpenAlexfundno aff
Reza Abbasifar

Bibliographic record

VenueThe Atrium (University of Guelph) · 2013
Typedissertation
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicEnterobacteriaceae and Cronobacter Research
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsBacteriophageBiological pest controlBiologyMicrobiologyEcologyGenetics
DOInot available

Abstract

fetched live from OpenAlex

The purpose of this research was to explore the potential application of lytic phages to control Cronobacter spp. in infant formula. More than two hundred and fifty phages were isolated from various environmental samples against different strains of Cronobacter spp. Selected phages were characterized by morphology, host range, and cross infectivity. The genomes of five novel Cronobacter phages [vB_CsaM_GAP31 (GAP31), vB_CsaM_GAP32 (GAP32), vB_CsaP_GAP52 (GAP52), vB_CsaM_GAP161 (GAP161), vB_CsaP_GAP227 (GAP227)] were sequenced. Phage GAP32 possess the second largest phage genome sequenced to date, and it is proposed that GAP32 belongs to a new genus of “Gap32likeviruses”. Phages GAP52 and GAP227 are the first C. sakazakii podoviruses whose genomes have been sequenced. None of the sequenced genomes showed homology to virulent or lysogenic genes. In addition, in vivo administration of phage GAP161 in the hemolymph of Galleria mellonella larvae showed no negative effects on the wellbeing of the larvae and could effectively prevent Cronobacter infection in the larvae. A cocktail of five phages was highly effective for biocontrol of three Cronobacter sakazakii strains present as a mixed culture in both broth media and contaminated reconstituted infant formula. This phage cocktail could be potentially used to control C. sakazakii during preparation of infant formula but would first have to be clinically evaluated in mammalian models.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.001
Threshold uncertainty score0.001

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.012
GPT teacher head0.244
Teacher spread0.232 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designBench or experimental
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations2
Published2013
Admission routes1
Has abstractyes

Explore more

Same venueThe Atrium (University of Guelph)Same topicEnterobacteriaceae and Cronobacter ResearchFrench-language works237,207