Paper · 2020

34. Influence of post-harvest application of chitosan on physico-chemical changes of apple fruit during storage

Syed Aizaz Ali Shah Hajra Shah; Rabia Raiz

12
claims
21
verbatim quotes
0
citations
3
research areas
—
Not open access

Abstract

Apple due to its climacteric nature lose its quality very rapidly. Chitosan being a non-toxic biodegradable material can be used as coating material for fruits. It would be environmental friendly as compared to other chemicals. Therefore, this experiment was conducted to evaluate the optimum chitosan concentration for retaining the quality of apple fruits for longer time. The fruits were coated with three chitosan concentrations (0.5, 1.0 and 1.5%) along with a set of fruits treated with distilled water as control. The fruits when dried were kept in the laboratory at room temperature (18±2oC) for 80 days, to study the effect of chitosan concentrations against physiological attributes after every 20 days interval. Both chitosan and storage had significantly influenced all the quality attributes of apples. Fruits coated with 1.5% chitosan were more firm and had maximum juice content, titratable acidity and ascorbic acid with less weight loss, fruit juice pH, total soluble solids (TSS) and TSS-Acid ratio and these results were at par with the effect of 1.0% chitosan on the fruits. Regarding storage effect, the fruits analyzed after 80 days showed maximum losses in weight, firmness, percent acidity and Ascorbic acids while pH, TSS and TSS-Acid ratio were found maximum. The interactive effect between chitosan and storage was found non-significant for all the studied attributes. It was concluded from the experiment that apple fruits Cv. Lady William coated with 1.0% chitosan after harvesting maintains the quality attributes up to 80 days during storage at 18±2 oC and 56±2% RH. Keywords: Apple; Chitosan; Climacteric fruit; Coating material; Lady William; Storage http://dx.doi.org/10.19045/bspab.2020.90271

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Claims 12

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Chitosan concentration significantly influenced all measured apple quality attributes.

Treatment
chitosane0
Outcome
all the quality attributes of applese0

Not reportedComparatorDirection

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Both chitosan and storage had significantly influenced all the quality attributes of apples.”

✓ located verbatim in the source · abstract, characters 723–815 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Storage duration significantly influenced all measured apple quality attributes.

Treatment
storagee0
Outcome
all the quality attributes of applese0

Not reportedComparatorDirection

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Both chitosan and storage had significantly influenced all the quality attributes of apples.”

✓ located verbatim in the source · abstract, characters 723–815 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Fruit coated with 1.5% chitosan was firmer and had more juice than other concentrations.

Treatment
1.5% chitosane0
Outcome
more firm and had maximum juice contente0
Direction
more firme0
Value
1.5%e0

Not reportedTaxonComparator

Verbatim

e0

“Fruits coated with 1.5% chitosan were more firm and had maximum juice content, titratable acidity and ascorbic acid with less weight loss, fruit juice pH, total soluble solids (TSS) and TSS-Acid ratio”

✓ located verbatim in the source · abstract, characters 816–1016 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 1.5% chitosan, apple fruit had maximum titratable acidity and ascorbic acid.

Taxon
apple fruitMalus domesticat0
Treatment
1.5% chitosane0
Outcome
titratable acidity and ascorbic acide0
Direction
maximume0

Not reportedComparator

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Fruits coated with 1.5% chitosan were more firm and had maximum juice content, titratable acidity and ascorbic acid with less weight loss, fruit juice pH, total soluble solids (TSS) and TSS-Acid ratio”

✓ located verbatim in the source · abstract, characters 816–1016 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

At 1.5% chitosan, apple fruit had less weight loss and lower juice pH.

Taxon
apple fruitMalus domesticat0
Treatment
1.5% chitosane0
Outcome
weight loss, fruit juice pHe0
Direction
lesse0

Not reportedComparator

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Fruits coated with 1.5% chitosan were more firm and had maximum juice content, titratable acidity and ascorbic acid with less weight loss, fruit juice pH, total soluble solids (TSS) and TSS-Acid ratio”

✓ located verbatim in the source · abstract, characters 816–1016 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

At 1.5% chitosan, apple fruit had lower total soluble solids and TSS to acid ratio.

Taxon
apple fruitMalus domesticat0
Treatment
1.5% chitosane0
Outcome
total soluble solids (TSS) and TSS-Acid ratioe0
Direction
lesse0

Not reportedComparator

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“Fruits coated with 1.5% chitosan were more firm and had maximum juice content, titratable acidity and ascorbic acid with less weight loss, fruit juice pH, total soluble solids (TSS) and TSS-Acid ratio”

✓ located verbatim in the source · abstract, characters 816–1016 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Intervention effectobservedoriginal resultnot significant (as stated)measured

Claim · model-written summary

The effect of 1.5% chitosan on quality attributes was at par with 1.0% chitosan.

Taxon
apple fruitMalus domesticat0
Treatment
1.5% chitosane1
Outcome
these resultse0
Direction
at pare0
Comparator
1.0% chitosane0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“these results were at par with the effect of 1.0% chitosan on the fruits.”

✓ located verbatim in the source · abstract, characters 1021–1094 · show in text ↑
e1

“Fruits coated with 1.5% chitosan”

✓ located verbatim in the source · abstract, characters 816–848 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

After 80 days, apple fruit showed maximum weight loss and firmness loss.

Taxon
apple fruitMalus domesticat0
Outcome
losses in weight, firmnesse0
Direction
maximum lossese0
Value
80 dayse0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“the fruits analyzed after 80 days showed maximum losses in weight, firmness, percent acidity and Ascorbic acids”

✓ located verbatim in the source · abstract, characters 1121–1232 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Observationobservedoriginal resultnegativemeasured

Claim · model-written summary

After 80 days, apple fruit showed maximum loss of percent acidity and ascorbic acids.

Taxon
apple fruitMalus domesticat0
Outcome
percent acidity and Ascorbic acidse0
Direction
maximum lossese0
Value
80 dayse0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“the fruits analyzed after 80 days showed maximum losses in weight, firmness, percent acidity and Ascorbic acids”

✓ located verbatim in the source · abstract, characters 1121–1232 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

After 80 days, apple fruit pH, TSS and TSS to acid ratio reached their maximum.

Taxon
apple fruitMalus domesticat0
Outcome
pH, TSS and TSS-Acid ratioe0
Direction
maximume0
Value
80 dayse0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“the fruits analyzed after 80 days showed maximum losses in weight, firmness, percent acidity and Ascorbic acids while pH, TSS and TSS-Acid ratio were found maximum.”

✓ located verbatim in the source · abstract, characters 1121–1285 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Associationobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

The interaction of chitosan and storage was not significant for any studied attribute.

Taxon
apple fruitMalus domesticat0
Treatment
chitosan and storagee0
Outcome
interactive effecte0
Qualifier
all the studied attributese0

Not reportedDirection

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“The interactive effect between chitosan and storage was found non-significant for all the studied attributes.”

✓ located verbatim in the source · abstract, characters 1286–1395 · show in text ↑
t0

“apple fruit”

✓ located verbatim in the source · title, characters 85–96 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors conclude that 1.0% chitosan coating maintains Lady William apple quality for up to 80 days at 18±2 oC and 56±2% RH.

Material
Cv. Lady Williame0
Outcome
coated with 1.0% chitosan after harvesting maintains the quality attributes up to 80 dayse0
Value
80 dayse0
Setting
18±2 oC and 56±2% RHe0

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

Malus domestica
Malus domestica · TaxonW.carter · CC0 · Wikimedia Commons ↗

Verbatim

e0

“apple fruits Cv. Lady William coated with 1.0% chitosan after harvesting maintains the quality attributes up to 80 days during storage at 18±2 oC and 56±2% RH.”

✓ located verbatim in the source · abstract, characters 1438–1597 · show in text ↑

chitosan · quality: postharvest · Malus domestica (apple)Positive and negative results

12 papers: 11 positive, 1 negative or no effect

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

  1. negative
  2. positive
  3. positive

8 papers more in this group

See all 12 papers →

chitosan · quality: sugar starch · Malus domestica (apple)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 →

chitosan · molecular: metabolites · Malus domestica (apple)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.