Abstract
The impact of methyl salicylate (MeSA) or sodium nitroprusside (SNP) in chitosan (CS)/Gum Arabic (GA) mixture on physio-chemical characteristics and antioxidant status during the postharvest ripening of green tomato fruits was studied. CS/GA-MeSA at a 1 mM formulation was the best treatment to retard firmness and titratable acidity (TA) losses. Moreover, this formulation retarded pigmentation progress where it had the lowest significant values of total carotenes (TCs) and lycopene (LYP) contents until the 15th day of the storage period, as well as efficiently faced the rise in malondialdehyde (MDA) levels. Moreover, peroxidase (POD), polyphenol oxidase (PPO), catalase (CAT), and phenylalanine ammonia-lyase (PAL) activities of tomatoes treated with CS/GA-SNP at 2 mM were significantly better than that of control in the primary stages of storage. CS/GA-SNP at a 2 mM formulation showed an extremely high significant content of total polyphenol (TP) in the early stage of storage, while CS/GA and CS/GA-MeSA at 1 and 2 mM accumulated higher significant TP contents than uncoated fruits at the late stage of storage. All formulations were characterized by FTIR spectroscopy. Furthermore, the polymer formulations exhibited strong antifungal activity against Alternaria alternata and Botrytis cinerea as major pathogens of postharvest tomatoes. Transmission electron microscope (TEM) observations for the mycelia of both fungi treated by CS/GA-MeSA at 2 mM revealed serious ultrastructural damage, including distortion of the cell wall and cell membrane and degradation of cytoplasmic organelles.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 14
Claim · model-written summary
CS/GA-MeSA at 1 mM best retarded firmness loss.
- Taxon
- Tomato Fruit
Solanum lycopersicumt0 - Treatment
- CS/GA-MeSA at a 1 mM formulatione0
- Outcome
- firmnesse0
- Direction
- retarde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS/GA-MeSA at a 1 mM formulation was the best treatment to retard firmness and titratable acidity (TA) losses.”
t0“Tomato Fruit”
Claim · model-written summary
CS/GA-MeSA at 1 mM best retarded titratable acidity loss.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at a 1 mM formulatione0
- Outcome
- titratable acidity (TA) lossese0
- Direction
- retarde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS/GA-MeSA at a 1 mM formulation was the best treatment to retard firmness and titratable acidity (TA) losses.”
t0“Tomato Fruit”
Claim · model-written summary
CS/GA-MeSA at 1 mM retarded pigmentation and lowered carotene and lycopene contents through day 15.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at a 1 mM formulatione1
- Outcome
- total carotenes (TCs) and lycopene (LYP) contentse0
- Direction
- loweste0
- Qualifier
- until the 15th day of the storage periode0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this formulation retarded pigmentation progress where it had the lowest significant values of total carotenes (TCs) and lycopene (LYP) contents until the 15th day of the storage period”
t0“Tomato Fruit”
e1“CS/GA-MeSA at a 1 mM formulation was the best treatment to retard firmness and titratable acidity (TA) losses.”
Claim · model-written summary
CS/GA-MeSA at 1 mM countered the rise in malondialdehyde.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at a 1 mM formulatione1
- Outcome
- malondialdehyde (MDA) levelse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“as well as efficiently faced the rise in malondialdehyde (MDA) levels.”
t0“Tomato Fruit”
e1“CS/GA-MeSA at a 1 mM formulation was the best treatment to retard firmness and titratable acidity (TA) losses.”
Claim · model-written summary
CS/GA-SNP at 2 mM improved POD, PPO and CAT activities versus control early in storage.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- CS/GA-SNP at 2 mMe0
- Outcome
- peroxidase (POD), polyphenol oxidase (PPO), catalase (CAT)e0
- Direction
- bettere0
- Qualifier
- primary stages of storagee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peroxidase (POD), polyphenol oxidase (PPO), catalase (CAT), and phenylalanine ammonia-lyase (PAL) activities of tomatoes treated with CS/GA-SNP at 2 mM were significantly better than that of control in the primary stages of storage.”
Claim · model-written summary
CS/GA-SNP at 2 mM improved PAL activity versus control early in storage.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- CS/GA-SNP at 2 mMe0
- Outcome
- phenylalanine ammonia-lyase (PAL) activitiese0
- Direction
- bettere0
- Qualifier
- primary stages of storagee0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“peroxidase (POD), polyphenol oxidase (PPO), catalase (CAT), and phenylalanine ammonia-lyase (PAL) activities of tomatoes treated with CS/GA-SNP at 2 mM were significantly better than that of control in the primary stages of storage.”
Claim · model-written summary
CS/GA-SNP at 2 mM produced very high total polyphenol content early in storage.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-SNP at a 2 mM formulatione0
- Outcome
- content of total polyphenol (TP)e0
- Direction
- highe0
- Qualifier
- early stage of storagee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS/GA-SNP at a 2 mM formulation showed an extremely high significant content of total polyphenol (TP) in the early stage of storage”
t0“Tomato Fruit”
Claim · model-written summary
CS/GA coatings produced higher total polyphenol content than uncoated fruit late in storage.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GAe0
- Outcome
- TP contentse0
- Direction
- highere0
- Qualifier
- late stage of storagee0
- Comparator
- uncoated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS/GA and CS/GA-MeSA at 1 and 2 mM accumulated higher significant TP contents than uncoated fruits at the late stage of storage.”
t0“Tomato Fruit”
Claim · model-written summary
CS/GA-MeSA at 1 mM produced higher total polyphenol content than uncoated fruit late in storage.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at 1e0
- Outcome
- TP contentse0
- Direction
- highere0
- Qualifier
- late stage of storagee0
- Comparator
- uncoated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS/GA and CS/GA-MeSA at 1 and 2 mM accumulated higher significant TP contents than uncoated fruits at the late stage of storage.”
t0“Tomato Fruit”
Claim · model-written summary
CS/GA-MeSA at 2 mM produced higher total polyphenol content than uncoated fruit late in storage.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at 1 and 2 mMe0
- Outcome
- TP contentse0
- Direction
- highere0
- Qualifier
- late stage of storagee0
- Comparator
- uncoated fruitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CS/GA and CS/GA-MeSA at 1 and 2 mM accumulated higher significant TP contents than uncoated fruits at the late stage of storage.”
t0“Tomato Fruit”
Claim · model-written summary
Polymer formulations had strong antifungal activity against Alternaria alternata.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- polymer formulationse0
- Interactor
- Alternaria alternata
.jpg?width=60)
Alternaria alternatae0pathogen - Outcome
- antifungal activity against Alternaria alternatae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“the polymer formulations exhibited strong antifungal activity against Alternaria alternata and Botrytis cinerea as major pathogens of postharvest tomatoes.”
Claim · model-written summary
Polymer formulations had strong antifungal activity against Botrytis cinerea.
- Taxon
- tomatoesSolanum lycopersicume0
- Treatment
- polymer formulationse0
- Interactor
- Botrytis cinerea
Botrytis cinereae0pathogen - Outcome
- antifungal activitye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the polymer formulations exhibited strong antifungal activity against Alternaria alternata and Botrytis cinerea as major pathogens of postharvest tomatoes.”
Claim · model-written summary
CS/GA-MeSA at 2 mM seriously damaged Alternaria alternata mycelia ultrastructure.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at 2 mMe0
- Interactor
- Alternaria alternataAlternaria alternatae0pathogen
- Outcome
- mycelia of both fungie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alternaria alternata and Botrytis cinerea as major pathogens of postharvest tomatoes. Transmission electron microscope (TEM) observations for the mycelia of both fungi treated by CS/GA-MeSA at 2 mM revealed serious ultrastructural damage, including distortion of the cell wall and cell membrane and degradation of cytoplasmic organelles.”
t0“Tomato Fruit”
Claim · model-written summary
CS/GA-MeSA at 2 mM seriously damaged Botrytis cinerea mycelia ultrastructure.
- Taxon
- Tomato FruitSolanum lycopersicumt0
- Treatment
- CS/GA-MeSA at 2 mMe0
- Interactor
- Botrytis cinereaBotrytis cinereae0pathogen
- Outcome
- mycelia of both fungie0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alternaria alternata and Botrytis cinerea as major pathogens of postharvest tomatoes. Transmission electron microscope (TEM) observations for the mycelia of both fungi treated by CS/GA-MeSA at 2 mM revealed serious ultrastructural damage, including distortion of the cell wall and cell membrane and degradation of cytoplasmic organelles.”
t0“Tomato Fruit”
The same questions in other papers
chitosan · physiology: oxidative · Solanum lycopersicum (tomato)Results differ
10 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- no effect
8 papers more in this group
See all 12 papers →chitosan · quality: phytochemicals · Solanum lycopersicum (tomato)Results differ
22 papers in the same direction as this paper
- positive
- positive
- positive
19 papers more in this group
See all 23 papers →chitosan · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Results differ
24 papers in the same direction as this paper
- positive
- positive
- positive
21 papers more in this group
See all 25 papers →Gibberellic acid · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
2 papers more in this group
See all 6 papers →Gibberellic acid · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
7 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
8 papers more in this group
See all 12 papers →chitosan · quality: sugar starch · Solanum lycopersicum (tomato)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- positive
- no effect
- positive
14 papers more in this group
See all 18 papers →chitosan · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results
38 papers in the same direction as this paper · 1 in the opposite direction
- positive
- positive
- no effect
36 papers more in this group
See all 40 papers →chitosan · Alternaria alternata · Solanum lycopersicum (tomato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
8 of 12 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.