Abstract
Fruit quality and ripening of Dwarf Brazilian bananas ( Musa sp., group AAB) were determined after x-ray irradiation for disinfestation of quarantine pests. The proximal and distal hands from winter- and summer-harvested bunches were treated with irradiation doses of 0, 200, 400, 600, or 800 Gy, stored for 7 days at 14 °C, and ripened at 20 °C. Irradiation did not extend banana shelf life or affect soluble solids content, but titratable acidity decreased with increasing dose. Starch and total sugar concentrations were similar for control and irradiated fruit at all doses. However, sucrose contents decreased linearly as dose increased, whereas glucose and fructose concentrations increased, indicating an acceleration of sucrose hydrolysis in treated bananas. Irradiation retarded peel softening but not pulp softening for winter-harvested fruit and had a minimal effect on peel and pulp firmness of summer-harvested fruit. For irradiated fruit, the respiratory climacteric rates decreased relative to control fruit, but CO 2 and ethylene production increased 1 day after irradiation stress. Proximal fruit (more mature) had higher respiration rates and produced more ethylene than distal fruit (less mature) after irradiation, but differences in physiological maturity between hands did not affect soluble solids, titratable acidity, starch, or total sugar content of ripe fruit. Bananas from distal hands treated with 800 Gy irradiation developed peel injury when harvested in either the winter or summer months. Summer-harvested fruit also were damaged at the 600-Gy dose for distal fruit only. Treatment of fruit from the proximal half of bunches at doses ≤600 Gy would ensure visual quality while providing quarantine security for Dwarf Brazilian bananas.
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Claims 20
Claim · model-written summary
Irradiation did not extend banana shelf life.
Not reportedComparator
Verbatim
e0“Irradiation did not extend banana shelf life”
Claim · model-written summary
Irradiation did not affect soluble solids content.
Not reportedComparatorDirection
Verbatim
e0“Irradiation did not extend banana shelf life or affect soluble solids content”
Claim · model-written summary
Titratable acidity decreased with increasing irradiation dose.
Verbatim
e0“titratable acidity decreased with increasing dose”
t0“Bananas”
Claim · model-written summary
Starch concentrations were similar in irradiated and control fruit.
Verbatim
e0“Starch and total sugar concentrations were similar for control and irradiated fruit at all doses”
t0“Bananas”
Claim · model-written summary
Total sugar concentrations were similar in irradiated and control fruit.
Verbatim
e0“Starch and total sugar concentrations were similar for control and irradiated fruit at all doses”
t0“Bananas”
Claim · model-written summary
Sucrose content decreased linearly with dose.
Verbatim
e0“sucrose contents decreased linearly as dose increased”
t0“Bananas”
Claim · model-written summary
Glucose and fructose concentrations increased as irradiation dose rose.
Verbatim
e0“glucose and fructose concentrations increased, indicating an acceleration of sucrose hydrolysis in treated bananas”
Claim · model-written summary
The authors interpreted the sugar changes as accelerated sucrose hydrolysis.
Verbatim
e0“indicating an acceleration of sucrose hydrolysis in treated bananas”
Claim · model-written summary
Irradiation retarded peel softening in winter fruit.
- Taxon
- Bananast0
- Treatment
- Irradiatione0
- Outcome
- peel softeninge0
- Direction
- retardede0
- Qualifier
- winter-harvested fruite0
Not reportedComparator
Verbatim
e0“Irradiation retarded peel softening but not pulp softening for winter-harvested fruit”
t0“Bananas”
Claim · model-written summary
Irradiation did not retard pulp softening in winter fruit.
Not reportedComparatorDirection
Verbatim
e0“Irradiation retarded peel softening but not pulp softening for winter-harvested fruit”
t0“Bananas”
Claim · model-written summary
Irradiation minimally affected peel and pulp firmness in summer fruit.
Not reportedDirection
Verbatim
e0“had a minimal effect on peel and pulp firmness of summer-harvested fruit”
t0“Bananas”
Claim · model-written summary
Irradiated fruit had lower respiratory climacteric rates than controls.
Verbatim
e0“For irradiated fruit, the respiratory climacteric rates decreased relative to control fruit”
t0“Bananas”
Claim · model-written summary
Carbon dioxide and ethylene production rose one day after irradiation.
Verbatim
e0“CO 2 and ethylene production increased 1 day after irradiation stress”
t0“Bananas”
Claim · model-written summary
Proximal fruit had higher respiration rates than distal fruit after irradiation.
Verbatim
e0“Proximal fruit (more mature) had higher respiration rates and produced more ethylene than distal fruit (less mature) after irradiation”
t0“Bananas”
Claim · model-written summary
Proximal fruit produced more ethylene than distal fruit after irradiation.
Verbatim
e0“Proximal fruit (more mature) had higher respiration rates and produced more ethylene than distal fruit (less mature) after irradiation”
t0“Bananas”
Claim · model-written summary
Hand maturity differences did not affect soluble solids or titratable acidity of ripe fruit.
Verbatim
e0“differences in physiological maturity between hands did not affect soluble solids, titratable acidity, starch, or total sugar content of ripe fruit”
t0“Bananas”
Claim · model-written summary
Hand maturity differences did not affect starch or total sugar content of ripe fruit.
Verbatim
e0“differences in physiological maturity between hands did not affect soluble solids, titratable acidity, starch, or total sugar content of ripe fruit”
t0“Bananas”
Claim · model-written summary
Distal fruit treated at 800 Gy developed peel injury in both seasons.
Verbatim
e0“Bananas from distal hands treated with 800 Gy irradiation developed peel injury when harvested in either the winter or summer months”
Claim · model-written summary
Summer harvested distal fruit was also damaged at 600 Gy.
Verbatim
e0“Summer-harvested fruit also were damaged at the 600-Gy dose for distal fruit only”
t0“Bananas”
Claim · model-written summary
The authors recommend proximal fruit irradiated at no more than 600 Gy to preserve visual quality and quarantine security.
Verbatim
e0“Treatment of fruit from the proximal half of bunches at doses ≤600 Gy would ensure visual quality while providing quarantine security for Dwarf Brazilian bananas”
The same questions in other papers
radiation · quality: postharvest · MusaPositive and negative results
5 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.