Abstract
In this study, we fabricated polyvinyl alcohol (PVA)/chitosan (CS) bilayer films by casting and investigated the effects of preparation conditions and CS content (2, 2.5, or 3 wt.%) on the ability of these films to preserve packaged strawberries. The best performance was achieved at a CS loading of 2.5 wt.% (ultrasound time, 25 min); the strain and stress values were 143.15 ± 6.43% and 70.67 ± 0.85 MPa, respectively, oxygen permeability was 0.16 ± 0.08 cm2·m2·day−1·MPa−1, water vapor permeability was 14.93 ± 4.09 g·cm−1·s−1·Pa−1, and the shelf life of fresh strawberries packaged in the PVA/CS 2.5 wt.% bilayer film was determined to be 21 days at 5 ± 2 °C and a relative humidity of 60 ± 5%. Treatment with PVA/CS bilayer films prevented the decrease in the firmness of strawberries during storage (21 days). The evaluated physicochemical parameters (weight loss, decay, firmness, titratable acidity, soluble solid content, ascorbic acid content, and color) indicated that treatment with PVA/CS bilayer films led to better maintenance of the fruit quality. We believe that our study makes a significant contribution to literature because it paves the way to the fabrication of smart packaging materials and facilitates the commercialization of fresh strawberries as an important health food.
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 8
Claim · model-written summary
The best film performance was at 2.5 wt.% chitosan loading, compared with 2 and 3 wt.%.
Not reportedTaxon
Verbatim
e0“investigated the effects of preparation conditions and CS content (2, 2.5, or 3 wt.%) on the ability of these films to preserve packaged strawberries”
e1“The best performance was achieved at a CS loading of 2.5 wt.% (ultrasound time, 25 min)”
Claim · model-written summary
The PVA/CS film had a strain of 143.15 ± 6.43%.
Not reportedTaxon
Verbatim
e2“the strain and stress values were 143.15 ± 6.43% and 70.67 ± 0.85 MPa”
Claim · model-written summary
The PVA/CS film had a stress of 70.67 ± 0.85 MPa.
Not reportedTaxon
Verbatim
e2“the strain and stress values were 143.15 ± 6.43% and 70.67 ± 0.85 MPa”
Claim · model-written summary
The PVA/CS film had an oxygen permeability of 0.16 ± 0.08.
Not reportedTaxon
Verbatim
e7“oxygen permeability was 0.16 ± 0.08”
Claim · model-written summary
The PVA/CS film had a water vapor permeability of 14.93 ± 4.09.
Not reportedTaxon
Verbatim
e3“water vapor permeability was 14.93 ± 4.09”
Claim · model-written summary
Fresh strawberries packaged in the PVA/CS 2.5 wt.% film had a shelf life of 21 days at 5 ± 2 °C and 60 ± 5% relative humidity.
- Taxon
- strawberries
_single2.jpg?width=60)
Fragaria ×ananassae4 - Treatment
- PVA/CS 2.5 wt.% bilayer filme4
- Outcome
- shelf lifee4
- Value
- 21 dayse4
- Setting
- 5 ± 2 °C and a relative humidity of 60 ± 5%e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e4“the shelf life of fresh strawberries packaged in the PVA/CS 2.5 wt.% bilayer film was determined to be 21 days at 5 ± 2 °C and a relative humidity of 60 ± 5%”
Claim · model-written summary
PVA/CS bilayer film treatment prevented the decrease in strawberry firmness during 21 days of storage.
- Taxon
- strawberriesFragaria ×ananassae5
- Treatment
- PVA/CS bilayer filmse5
- Outcome
- firmnesse5
- Direction
- prevented the decreasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Treatment with PVA/CS bilayer films prevented the decrease in the firmness of strawberries during storage (21 days)”
Claim · model-written summary
PVA/CS bilayer film treatment led to better maintenance of strawberry fruit quality.
- Taxon
- StrawberryFragaria ×ananassat0
- Treatment
- PVA/CS bilayer filmse6
- Outcome
- fruit qualitye6
- Direction
- led to better maintenancee6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Strawberry Preservation”
e6“treatment with PVA/CS bilayer films led to better maintenance of the fruit quality”
The same questions in other papers
chitosan · quality: postharvest · Fragaria x ananassa (strawberry)Positive and negative results
46 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
44 papers more in this group
See all 48 papers →poly(vinyl alcohol) macromolecule · quality: postharvest · Fragaria x ananassa (strawberry)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
chitosan · quality: grain · Fragaria x ananassa (strawberry)Results agree
3 papers in the same direction as this paper
- positive
- positive
- 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.