Abstract
The effect of chitosan coating on the physico-chemical characteristics of guava cv. Allahabad Safeda fruits stored at room temperature (28-32°C and 32-41% RH) was investigated. The fruits were treated with chitosan (1% and 2%) to study its effect on the postharvest life and quality of guava. Various storage attributes were studied at successive intervals of storage. In general, Physiological Loss in Weight (PLW %), respiration rate and TSS increased while firmness and acidity decreased with storage duration. Among various treatments, 1% chitosan treatment was found effective in extending the shelf life upto7 days, as it delayed ripening and retained greater firmness with reduced PLW%. However, the fruits treated with 2% chitosan showed uneven ripening and didn’t turn yellow even at the end of shelf life, attributed to CO2 injury. Keywords: Chitosan, Guava, Postharvest Quality, Respiration, Storage
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Claims 8
Claim · model-written summary
Weight loss, respiration and soluble solids increased with storage duration.
- Taxon
- guava
Psidium guajavat0 - Treatment
- storage duratione0
- Outcome
- Physiological Loss in Weight (PLW %), respiration rate and TSSe0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological Loss in Weight (PLW %), respiration rate and TSS increased while firmness and acidity decreased with storage duration.”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
Firmness and acidity decreased with storage duration.
- Taxon
- guavaPsidium guajavat0
- Treatment
- storage duratione0
- Outcome
- firmness and aciditye0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Physiological Loss in Weight (PLW %), respiration rate and TSS increased while firmness and acidity decreased with storage duration.”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
One percent chitosan extended shelf life up to 7 days.
- Taxon
- guavaPsidium guajavat0
- Treatment
- 1% chitosan treatmente0
- Outcome
- shelf lifee0
- Direction
- extendinge0
- Value
- 7 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1% chitosan treatment was found effective in extending the shelf life upto7 days”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
One percent chitosan delayed ripening.
- Taxon
- guavaPsidium guajavat0
- Treatment
- 1% chitosan treatmente0
- Outcome
- ripeninge0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1% chitosan treatment was found effective in extending the shelf life upto7 days, as it delayed ripening and retained greater firmness with reduced PLW%”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
One percent chitosan retained greater firmness.
- Taxon
- guavaPsidium guajavat0
- Treatment
- 1% chitosan treatmente0
- Outcome
- firmnesse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1% chitosan treatment was found effective in extending the shelf life upto7 days, as it delayed ripening and retained greater firmness with reduced PLW%”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
One percent chitosan reduced physiological loss in weight.
- Taxon
- guavaPsidium guajavat0
- Treatment
- 1% chitosan treatmente0
- Outcome
- PLW%e0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“1% chitosan treatment was found effective in extending the shelf life upto7 days, as it delayed ripening and retained greater firmness with reduced PLW%”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
Two percent chitosan produced uneven ripening.
- Taxon
- guavaPsidium guajavat0
- Treatment
- 2% chitosane0
- Outcome
- uneven ripeninge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits treated with 2% chitosan showed uneven ripening”
t0“Guava (Psidium guajava L.)”
Claim · model-written summary
Two percent chitosan prevented yellowing by shelf life end.
- Taxon
- guavaPsidium guajavat0
- Treatment
- 2% chitosane0
- Outcome
- didn’t turn yellowe0
- Qualifier
- attributed to CO2 injurye0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruits treated with 2% chitosan showed uneven ripening and didn’t turn yellow even at the end of shelf life, attributed to CO2 injury”
t0“Guava (Psidium guajava L.)”
The same questions in other papers
chitosan · quality: postharvest · Psidium guajava (guava)Results agree
19 papers in the same direction as this paper
- positive
- positive
- positive
16 papers more in this group
See all 20 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.