Abstract
The aim of this study was to analyze the microbiome of carrot (Daucus carota subsp. sativus) subjected to minimal pre-treatment (rinsing in organic acid solution) and packaging in a high-oxygen modified atmosphere, and then stored for 17 days under refrigeration conditions (4 °C). The highest levels of bacteria in the carrot microbiome were characterized, at almost 78%, by bacteria belonging to the Enterobacteriaceae and Pseudomonadaceae families. Rinsing in a solution of ascorbic and citric acids resulted in the improvement of microbiological quality in the first day of storage. However, the use of a high-oxygen modified atmosphere extended the shelf life of the minimally processed product. Compared to carrots stored in air, those stored in high oxygen concentration were characterized by a greater ratio of bacteria belonging to the Serratia and Enterobacter genera, and a lower ratio belonging to the Pseudomonas and Pantoea genera. Moreover, the β-biodiversity analysis confirmed that the oxygen concentration was the main factor influencing the differentiation of the metabiomes of the stored carrots. The bacterial strains isolated from carrots identified by molecular methods were mostly pathogenic or potentially pathogenic microorganisms. Neither the minimal pre-treatment nor packaging in high-oxygen atmosphere was able to eliminate the threat of pathogenic bacteria emerging in the product.
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Claims 11
Claim · model-written summary
Enterobacteriaceae and Pseudomonadaceae comprised almost 78% of carrot microbiome bacteria.
- Taxon
- carrot
Daucus carotat0 - Outcome
- bacteria belonging to the Enterobacteriaceae and Pseudomonadaceae familiese0
- Value
- almost 78%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“almost 78%, by bacteria belonging to the Enterobacteriaceae and Pseudomonadaceae families”
t0“Carrot”
Claim · model-written summary
Rinsing in ascorbic and citric acids improved microbiological quality on storage day one.
- Taxon
- carrotDaucus carotat0
- Treatment
- Rinsing in a solution of ascorbic and citric acidse0
- Outcome
- microbiological qualitye0
- Direction
- improvemente0
- Qualifier
- first day of storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rinsing in a solution of ascorbic and citric acids resulted in the improvement of microbiological quality in the first day of storage”
t0“Carrot”
Claim · model-written summary
High-oxygen modified atmosphere extended shelf life.
- Taxon
- carrotDaucus carotat0
- Treatment
- high-oxygen modified atmospheree0
- Outcome
- shelf lifee0
- Direction
- extendede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“use of a high-oxygen modified atmosphere extended the shelf life of the minimally processed product”
t0“Carrot”
Claim · model-written summary
High oxygen increased the ratio of Serratia relative to air storage.
- Taxon
- carrotsDaucus carotae0
- Treatment
- high oxygen concentratione0
- Interactor
- Serratiae0other
- Outcome
- ratio of bacteria belonging to the Serratiae0
- Direction
- greatere0
- Comparator
- stored in aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to carrots stored in air, those stored in high oxygen concentration were characterized by a greater ratio of bacteria belonging to the Serratia and Enterobacter genera”
Claim · model-written summary
High oxygen increased the ratio of Enterobacter relative to air storage.
- Taxon
- carrotsDaucus carotae0
- Treatment
- high oxygen concentratione0
- Interactor
- Enterobacter
Enterobactere0other - Outcome
- Enterobacter generae0
- Direction
- greatere0
- Comparator
- stored in aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to carrots stored in air, those stored in high oxygen concentration were characterized by a greater ratio of bacteria belonging to the Serratia and Enterobacter genera”
Claim · model-written summary
High oxygen lowered the Pseudomonas ratio relative to air storage.
- Taxon
- carrotsDaucus carotae0
- Treatment
- high oxygen concentratione0
- Interactor
- Pseudomonas
Pseudomonase0other - Outcome
- ratio belonging to the Pseudomonase0
- Direction
- lowere0
- Comparator
- stored in aire0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to carrots stored in air, those stored in high oxygen concentration were characterized by a greater ratio of bacteria belonging to the Serratia and Enterobacter genera, and a lower ratio belonging to the Pseudomonas and Pantoea genera”
Claim · model-written summary
High oxygen lowered the Pantoea ratio relative to air storage.
- Taxon
- carrotsDaucus carotae0
- Treatment
- high oxygen concentratione0
- Outcome
- Pantoea generae0
- Direction
- lowere0
- Comparator
- stored in aire0
.jpg?width=60){kind=small}
PantoeaOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Compared to carrots stored in air, those stored in high oxygen concentration were characterized by a greater ratio of bacteria belonging to the Serratia and Enterobacter genera, and a lower ratio belonging to the Pseudomonas and Pantoea genera”
Claim · model-written summary
Oxygen concentration was the main factor differentiating stored carrot metabiomes.
- Taxon
- carrotsDaucus carotae0
- Treatment
- oxygen concentratione0
- Outcome
- differentiation of the metabiomese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oxygen concentration was the main factor influencing the differentiation of the metabiomes of the stored carrots”
Claim · model-written summary
Most bacterial isolates from carrots were pathogenic or potentially pathogenic.
- Taxon
- carrotsDaucus carotae0
- Outcome
- bacterial strains isolated from carrotse0
- Qualifier
- mostly pathogenic or potentially pathogenic microorganismse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bacterial strains isolated from carrots identified by molecular methods were mostly pathogenic or potentially pathogenic microorganisms”
Claim · model-written summary
Minimal pretreatment did not eliminate risk of pathogenic bacteria in carrots.
- Taxon
- carrotDaucus carotat0
- Treatment
- minimal pre-treatmente0
- Outcome
- threat of pathogenic bacteria emerging in the producte0
- Direction
- was able to eliminatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither the minimal pre-treatment nor packaging in high-oxygen atmosphere was able to eliminate the threat of pathogenic bacteria emerging in the product”
t0“Carrot”
Claim · model-written summary
High-oxygen packaging did not eliminate risk of pathogenic bacteria in carrots.
- Taxon
- carrotDaucus carotat0
- Treatment
- packaging in high-oxygen atmospheree0
- Outcome
- threat of pathogenic bacteria emerging in the producte0
- Direction
- was able to eliminatee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Neither the minimal pre-treatment nor packaging in high-oxygen atmosphere was able to eliminate the threat of pathogenic bacteria emerging in the product”
t0“Carrot”
The same questions in other papers
citric acid · quality: general · Daucus carota (carrot)Results agree
1 paper in the same direction as this paper
- positive
storage · disease · Daucus carota (carrot)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
storage · quality: postharvest · Daucus carota (carrot)Positive and negative results
15 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
18 papers more in this group
See all 22 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.