Abstract
Postharvest ripening is correlated to the quality and shelf life of European pear fruit. In this study, the effects of peppermint extract on fruit phenotype, related physiological activities, and aroma components during postharvest ripening of the European pear variety ‘Packham’s Triumph’ were examined. Fruit treated with 2.0 g L−1 peppermint extract for 12 h showed delayed softening by 4 d compared with that of the untreated control group. The peak values of ethylene and respiratory rate in fruit were reduced to a certain extent after peppermint extract treatment; however, the peppermint extract did not delay the occurrence of the respiratory climacteric peak. Peppermint extract treatment also did not significantly increase the content of the characteristic peppermint aroma in pear fruit. Further, widely targeted metabolome analysis revealed 298 significantly different metabolites, with flavonoids (40%) and lipid compounds (15%) accounting for the highest proportion on the first day after treatment. The Kyoto Encyclopedia of Genes and Genomes pathway result showed significant enrichment in the metabolic pathways of biosynthesis of flavonoid, isoflavonoid, flavone and flavonol, linoleic acid, and alpha-linolenic acid metabolism following peppermint extract treatment. The combined analysis of transcriptome and metabolome data showed significant enrichment in linoleic acid metabolism and alpha-linolenic acid metabolism on the first, third, and fifth days after peppermint extract treatment. This study indicates that peppermint extract mainly affects the pear fruit softening process in the early stage after treatment.
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Claims 9
Claim · model-written summary
Peppermint extract delayed pear fruit softening by 4 days versus untreated controls.
- Taxon
- Pyrus communis L.
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Material
- ‘Packham’s Triumph’t0
- Treatment
- 2.0 g L−1 peppermint extract for 12 he0
- Outcome
- softeninge0
- Direction
- delayede0
- Value
- 4 de0
- Comparator
- untreated control groupe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“Fruit treated with 2.0 g L−1 peppermint extract for 12 h showed delayed softening by 4 d compared with that of the untreated control group”
t0“‘Packham’s Triumph’ Pear (Pyrus communis L.)”
Claim · model-written summary
Peppermint extract reduced the peak ethylene and respiration rates in pear fruit.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- peppermint extract treatmente0
- Outcome
- peak values of ethylene and respiratory ratee0
- Direction
- reducede0
- Qualifier
- to a certain extente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The peak values of ethylene and respiratory rate in fruit were reduced to a certain extent after peppermint extract treatment”
t0“Pear (Pyrus communis L.)”
Claim · model-written summary
Peppermint extract did not delay the respiratory climacteric peak.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- peppermint extracte0
- Outcome
- occurrence of the respiratory climacteric peake0
- Direction
- did not delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the peppermint extract did not delay the occurrence of the respiratory climacteric peak”
t0“Pear (Pyrus communis L.)”
Claim · model-written summary
Peppermint extract did not significantly increase characteristic peppermint aroma in pear fruit.
- Taxon
- pear fruitPyrus communise0
- Treatment
- Peppermint extract treatmente0
- Outcome
- content of the characteristic peppermint aromae0
- Direction
- did not significantly increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Peppermint extract treatment also did not significantly increase the content of the characteristic peppermint aroma in pear fruit”
Claim · model-written summary
Metabolomics found 298 significantly different metabolites after peppermint treatment, led by flavonoids and lipid compounds.
- Taxon
- Pyrus communis L.Pyrus communist0
- Outcome
- significantly different metabolitese0
- Value
- 298e0
- Qualifier
- on the first day after treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“widely targeted metabolome analysis revealed 298 significantly different metabolites, with flavonoids (40%) and lipid compounds (15%) accounting for the highest proportion on the first day after treatment”
t0“Pear (Pyrus communis L.)”
Claim · model-written summary
Flavonoids accounted for 40% of different pear metabolites on the first day.
- Taxon
- Pyrus communis L.Pyrus communist0
- Outcome
- flavonoidse0
- Value
- 40%e0
- Qualifier
- on the first day after treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flavonoids (40%) and lipid compounds (15%) accounting for the highest proportion on the first day after treatment”
t0“Pear (Pyrus communis L.)”
Claim · model-written summary
Lipid compounds accounted for 15% of different pear metabolites on the first day.
- Taxon
- Pyrus communis L.Pyrus communist0
- Outcome
- lipid compoundse0
- Value
- 15%e0
- Qualifier
- on the first day after treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“flavonoids (40%) and lipid compounds (15%) accounting for the highest proportion on the first day after treatment”
t0“Pear (Pyrus communis L.)”
Claim · model-written summary
KEGG analysis found enrichment of flavonoid-family and fatty acid metabolic pathways after peppermint treatment.
- Taxon
- Pyrus communis L.Pyrus communist0
- Treatment
- peppermint extract treatmente0
- Outcome
- metabolic pathways of biosynthesis of flavonoid, isoflavonoid, flavone and flavonol, linoleic acid, and alpha-linolenic acid metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant enrichment in the metabolic pathways of biosynthesis of flavonoid, isoflavonoid, flavone and flavonol, linoleic acid, and alpha-linolenic acid metabolism following peppermint extract treatment”
t0“Pear (Pyrus communis L.)”
Claim · model-written summary
Combined transcriptome and metabolome analysis found linoleic and alpha-linolenic acid metabolism enriched on days 1, 3 and 5.
- Taxon
- Pyrus communis L.Pyrus communist0
- Outcome
- linoleic acid metabolism and alpha-linolenic acid metabolisme0
- Qualifier
- first, third, and fifth days after peppermint extract treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant enrichment in linoleic acid metabolism and alpha-linolenic acid metabolism on the first, third, and fifth days after peppermint extract treatment”
t0“Pear (Pyrus communis L.)”
The same questions in other papers
botanical · quality: phytochemicals · Pyrus communis (pear)Positive and negative results
1 in the opposite direction
- positive
botanical · quality: postharvest · Pyrus communis (pear)Results agree
1 paper in the same direction as this paper
- positive
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.