Paper · 2017 · Journal of food and nutrition research

Using Chitosan Combined Treatment with Citric Acid as Edible Coatings to Delay Postharvest Ripening Process and Maintain Tomato ( Solanum lycopersicon Mill) Quality

Jihong Zhang; L. W. ZENG; Helong Sun; et al.

12
claims
20
verbatim quotes
15
citations
1
research areas
—
Not open access

Abstract

Physicochemical properties of citric acid and chitosan treated fresh tomato fruits were investigated in the present study. The experimental results showed that control fruits had higher weight loss, lower firmness and pH, but tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness, but significantly increased the SOD, POD, CAT and PAL activities of fresh tomatoes. All these treated tomato fruits maintained lighter color and higher contents of total phenolics and flavonoids, significantly decreased weight loss and MDA content of fresh tomato fruits compared to control. Of all these treated tomato fruits, citric acid + chitosan treatment maintained higher fruit quality, reduced the undesirable changes and protected the fruit tissues from injury. In short, the experiment datum indicated that citric acid + chitosan might be applied in a safe and effective preservative of fresh tomato fruits.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 12

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Chitosan and citric acid treatment significantly decreased weight loss and MDA content of tomato fruit compared with control

Treatment
chitosan and citric acide3
Outcome
weight loss and MDA contente0
Direction
decreasede0
Comparator
controle0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“significantly decreased weight loss and MDA content of fresh tomato fruits compared to control”

✓ located verbatim in the source · abstract, characters 524–618 · show in text ↑
e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Chitosan and citric acid treatment significantly increased SOD, POD and CAT activities of tomato fruit

Treatment
chitosan and citric acide3
Outcome
SOD, POD, CATe2
Direction
increasede2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e2

“significantly increased the SOD, POD, CAT and PAL activities of fresh tomatoes”

✓ located verbatim in the source · abstract, characters 332–410 · show in text ↑
e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Chitosan and citric acid treatment significantly increased PAL activity of tomato fruit

Treatment
chitosan and citric acide3
Outcome
PAL activitiese2
Direction
increasede2

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e2

“significantly increased the SOD, POD, CAT and PAL activities of fresh tomatoes”

✓ located verbatim in the source · abstract, characters 332–410 · show in text ↑
e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Chitosan and citric acid treatment had no significant effect on pH, Vc and TSS of tomato fruit

Treatment
chitosan and citric acide3
Outcome
pH, Vc, TSSe3
Direction
no significant effecte3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Chitosan and citric acid treatment had no significant effect on firmness of tomato fruit

Treatment
chitosan and citric acide3
Outcome
firmnesse3
Direction
no significant effecte3

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Chitosan and citric acid treatment kept higher contents of total phenolics and flavonoids in tomato fruit

Treatment
chitosan and citric acide3
Outcome
total phenolics and flavonoidse4
Direction
highere4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e4

“All these treated tomato fruits maintained lighter color and higher contents of total phenolics and flavonoids”

✓ located verbatim in the source · abstract, characters 412–522 · show in text ↑
e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Chitosan and citric acid treatment maintained lighter tomato fruit color

Treatment
chitosan and citric acide3
Outcome
colore4
Direction
lightere4

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e4

“All these treated tomato fruits maintained lighter color and higher contents of total phenolics and flavonoids”

✓ located verbatim in the source · abstract, characters 412–522 · show in text ↑
e3

“tomatoes-treated with chitosan and citric acid had no significant effect on pH, Vc, TSS and firmness”

✓ located verbatim in the source · abstract, characters 226–326 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

Control tomato fruits had lower firmness and pH than treated fruits

Outcome
firmness and pHe1
Direction
lowere1
Qualifier
control fruitse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Tomato ( Solanum lycopersicon Mill)”

✓ located verbatim in the source · title, characters 121–156 · show in text ↑
e1

“control fruits had higher weight loss, lower firmness and pH”

✓ located verbatim in the source · abstract, characters 160–220 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

Citric acid plus chitosan might be applied as a safe and effective preservative of fresh tomato fruit

Outcome
safe and effective preservativee5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e5

“citric acid + chitosan might be applied in a safe and effective preservative of fresh tomato fruits”

✓ located verbatim in the source · abstract, characters 845–944 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Citric acid plus chitosan treatment maintained higher fruit quality than the other treated tomato fruits

Treatment
citric acid + chitosane6
Outcome
fruit qualitye6
Direction
highere6
Comparator
all these treated tomato fruitse6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e6

“Of all these treated tomato fruits, citric acid + chitosan treatment maintained higher fruit quality”

✓ located verbatim in the source · abstract, characters 620–720 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Citric acid plus chitosan treatment reduced undesirable changes in tomato fruit

Treatment
citric acid + chitosane6
Outcome
undesirable changese7
Direction
reducede7

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e6

“Of all these treated tomato fruits, citric acid + chitosan treatment maintained higher fruit quality”

✓ located verbatim in the source · abstract, characters 620–720 · show in text ↑
e7

“reduced the undesirable changes and protected the fruit tissues from injury”

✓ located verbatim in the source · abstract, characters 722–797 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Citric acid plus chitosan treatment protected tomato fruit tissues from injury

Treatment
citric acid + chitosane6
Outcome
injurye7
Direction
protectede7

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Solanum lycopersicum
Solanum lycopersicum · TaxonKod B · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e6

“Of all these treated tomato fruits, citric acid + chitosan treatment maintained higher fruit quality”

✓ located verbatim in the source · abstract, characters 620–720 · show in text ↑
e7

“reduced the undesirable changes and protected the fruit tissues from injury”

✓ located verbatim in the source · abstract, characters 722–797 · show in text ↑

chitosan · physiology: oxidative · Solanum lycopersicum (tomato)Results differ

12 papers: 11 positive, 1 negative or no effect

10 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. positive

8 papers more in this group

See all 12 papers →

chitosan · quality: phytochemicals · Solanum lycopersicum (tomato)Results differ

23 papers: 23 positive, 0 negative or no effect

22 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

19 papers more in this group

See all 23 papers →

chitosan · physiology: antioxidant enzymes · Solanum lycopersicum (tomato)Results differ

25 papers: 25 positive, 0 negative or no effect

24 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

21 papers more in this group

See all 25 papers →

chitosan · quality: grain · Solanum lycopersicum (tomato)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

1 paper in the same direction as this paper · 1 in the opposite direction

  1. no effect
  2. positive
See all 3 papers →

citric acid · quality: phytochemicals · Solanum lycopersicum (tomato)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

2 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive
See all 4 papers →

chitosan · quality: sugar starch · Solanum lycopersicum (tomato)Positive and negative results

18 papers: 17 positive, 1 negative or no effect

17 in the opposite direction

  1. positive
  2. positive
  3. positive

14 papers more in this group

See all 18 papers →

chitosan · quality: postharvest · Solanum lycopersicum (tomato)Positive and negative results

40 papers: 39 positive, 1 negative or no effect

38 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. no effect
  3. positive

36 papers more in this group

See all 40 papers →

citric acid · quality: postharvest · Solanum lycopersicum (tomato)Results agree

3 papers: 3 positive, 0 negative or no effect

2 papers in the same direction as this paper

  1. positive
  2. positive
See all 3 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.