Abstract
The search for techniques that extend shelf life of guava (Psidium guajava) fruits, and reduce its postharvest losses is desirable. The objective of this work was to evaluate the effects of concentrations of competitive ethylene antagonist 1-methylcyclopropene (1-MCP) on conservation of 'Pedro Sato' guava fruits. Treatments consisted of 0, 100, 300 or 900 nL L-1 of 1-MCP for 3 hours followed by storage at 25ºC, and 10ºC with 90±5% RH. The application of 900 nL L-1 1-MCP for 3 hours was efficient in delaying loss of skin color, and in keeping fruit firmness at both storage temperatures. The 300 nL L-1 of 1-MCP concentration was efficient in delaying skin color loss only when fruits were stored at 10ºC. The effect of 1-MCP was quite significant on the reduction of rot incidence at both storage temperatures. The respiratory rate was lower in fruits treated with 300 and 900 nL L-1 of 1-MCP during storage at 25ºC. The product was efficient in delaying the ripening of fruits, and the concentration of 900 nL L-1 showed the best effect.
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Claims 8
Claim · model-written summary
900 nL L-1 1-MCP delayed guava skin color loss at both storage temperatures.
- Taxon
- guavas
Psidium guajavat0 - Material
- 'Pedro Sato't0
- Treatment
- 900 nL L-1 1-MCP for 3 hourse0
- Outcome
- loss of skin colore0
- Direction
- delayinge0
- Qualifier
- both storage temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of 900 nL L-1 1-MCP for 3 hours was efficient in delaying loss of skin color, and in keeping fruit firmness at both storage temperatures.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
900 nL L-1 1-MCP maintained guava firmness at both storage temperatures.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Treatment
- 900 nL L-1 1-MCP for 3 hourse0
- Outcome
- fruit firmnesse0
- Direction
- keepinge0
- Qualifier
- both storage temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The application of 900 nL L-1 1-MCP for 3 hours was efficient in delaying loss of skin color, and in keeping fruit firmness at both storage temperatures.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
300 nL L-1 1-MCP delayed skin color loss at 10ºC only.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Treatment
- 300 nL L-1 of 1-MCPe0
- Outcome
- skin color losse0
- Direction
- delayinge0
- Qualifier
- only when fruits were stored at 10ºCe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 300 nL L-1 of 1-MCP concentration was efficient in delaying skin color loss only when fruits were stored at 10ºC.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
1-MCP significantly reduced rot incidence at both storage temperatures.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Treatment
- 1-MCPe0
- Outcome
- rot incidencee0
- Direction
- reductione0
- Qualifier
- both storage temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of 1-MCP was quite significant on the reduction of rot incidence at both storage temperatures.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
300 nL L-1 1-MCP lowered respiratory rate during 25ºC storage.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Treatment
- 300e0
- Outcome
- respiratory ratee0
- Direction
- lowere0
- Qualifier
- storage at 25ºCe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The respiratory rate was lower in fruits treated with 300 and 900 nL L-1 of 1-MCP during storage at 25ºC.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
900 nL L-1 1-MCP lowered respiratory rate during 25ºC storage.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Treatment
- 900 nL L-1 of 1-MCPe0
- Outcome
- respiratory ratee0
- Direction
- lowere0
- Qualifier
- storage at 25ºCe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The respiratory rate was lower in fruits treated with 300 and 900 nL L-1 of 1-MCP during storage at 25ºC.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
1-MCP delayed fruit ripening.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Treatment
- producte0
- Outcome
- ripening of fruitse0
- Direction
- delayinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The product was efficient in delaying the ripening of fruits, and the concentration of 900 nL L-1 showed the best effect.”
t0“'Pedro Sato' guavas”
Claim · model-written summary
900 nL L-1 showed the best 1-MCP effect on ripening.
- Taxon
- guavasPsidium guajavat0
- Material
- 'Pedro Sato't0
- Outcome
- best effecte0
- Direction
- beste0
- Value
- 900 nL L-1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the concentration of 900 nL L-1 showed the best effect.”
t0“'Pedro Sato' guavas”
The same questions in other papers
1-methylcyclopropene · quality: postharvest · Psidium guajava (guava)Results differ
11 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- no effect
10 papers more in this group
See all 14 papers →1-methylcyclopropene · disease · Psidium guajava (guava)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
1-methylcyclopropene · physiology: respiration · Psidium guajava (guava)Results agree
1 paper in the same direction as this paper
- 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.