Abstract
Irradiation with dosages above 100 krad in duced some decay reduction in Pineapple and Valencia oranges stored at 70 F for 21 days without diphenyl pads. At 40 F there was less spoilage for the Temple fruit; with diphenyl pads and storage at 40 F there was less spoilage of Pineapple oranges. The citrus fruits exami ned showed irradiation induced peel injury. Tem ple fruit were the least susceptible to peel injury. The severity of peel injury was greater as the radiation doses increased or the storage temper ature and duration increased. Florida Agricultural Experiment Stations Journal Series No. 2543. lDepartment of Food Science, University of Florida, Gainesville. 2University of Florida Citrus Experiment Station, Lake Alfred. There were no differences in the organoleptic quality attributes of irradiated grapefruit stored 19 and 20 days at 65 and 58 F, respectively. No differences were observed in the color or consistency of juice expressed from irradiated Valencia oranges, but a lower flavor rating was obtained from the 300 krad level. Sections from Temple fruit irradiated with dosages in excess of 100 krad and stored 7 days at 35 and 50 F were softer and had less acceptable flavor. How ever, by extending the storage period to 13 days, no differences were observed in the flavor of Temples stored at 50 F. In view of the severity of peel injury irradia tion cannot be recommended for preservation of Florida citrus fruits. Introduction There is a widespread interest in the use of gamma radiation for the extension of shelf life of citrus fruits. While decay organisms can be inactivated by adequate dosages of gamma Table 1. Effects of irradiation, storage temperature and duration, and diphenyl on decay (%) and peel injury (points scale) in Duncan grapefruit.
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Claims 12
Claim · model-written summary
Irradiation above 100 krad reduced decay in Pineapple and Valencia oranges stored at 70 F for 21 days without diphenyl pads.
- Taxon
- Pineapple and Valencia oranges
Citrus sinensis
Ananas comosuse0 - Treatment
- Irradiation with dosages above 100 krade0
- Outcome
- decaye0
- Direction
- reductione0
- Setting
- stored at 70 F for 21 days without diphenyl padse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irradiation with dosages above 100 krad in duced some decay reduction in Pineapple and Valencia oranges stored at 70 F for 21 days without diphenyl pads.”
Claim · model-written summary
Temple fruit had less spoilage at 40 F.
Verbatim
e0“At 40 F there was less spoilage for the Temple fruit”
Claim · model-written summary
Pineapple oranges stored at 40 F with diphenyl pads had less spoilage.
- Taxon
- Pineapple orangese0
- Treatment
- diphenyl padse0
- Outcome
- spoilagee0
- Direction
- lesse0
- Setting
- storage at 40 Fe0
Not reportedComparator
Verbatim
e0“with diphenyl pads and storage at 40 F there was less spoilage of Pineapple oranges”
Claim · model-written summary
Irradiation caused peel injury in the examined citrus fruits.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The citrus fruits exami ned showed irradiation induced peel injury.”
Claim · model-written summary
Temple fruit was least susceptible to peel injury.
Verbatim
e0“Tem ple fruit were the least susceptible to peel injury.”
Claim · model-written summary
Peel injury became more severe with increasing radiation dose or storage temperature and duration.
Not reportedTaxon
Verbatim
e0“The severity of peel injury was greater as the radiation doses increased or the storage temper ature and duration increased.”
Claim · model-written summary
Irradiated grapefruit showed no difference in organoleptic quality after the stated storage periods.
- Taxon
- grapefruit
_Pompelino_Grapefruit_002.jpg?width=60)
Citrus ×paradisie0 - Treatment
- irradiatede0
- Outcome
- organoleptic quality attributese0
- Direction
- no differencese0
- Setting
- stored 19 and 20 days at 65 and 58 Fe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Pompelino_Grapefruit_002.jpg?width=500)
Verbatim
e0“There were no differences in the organoleptic quality attributes of irradiated grapefruit stored 19 and 20 days at 65 and 58 F, respectively.”
Claim · model-written summary
Irradiated Valencia orange juice showed no difference in color or consistency.
- Taxon
- Valencia orangesCitrus sinensise0
- Treatment
- irradiatede0
- Outcome
- color or consistency of juicee0
- Direction
- No differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No differences were observed in the color or consistency of juice expressed from irradiated Valencia oranges”
Claim · model-written summary
Valencia oranges irradiated at 300 krad received a lower flavor rating.
Not reportedComparator
Verbatim
e0“a lower flavor rating was obtained from the 300 krad level”
t0“VALENCIA ORANGES”
Claim · model-written summary
Temple sections irradiated above 100 krad and stored seven days were softer and had less acceptable flavor.
- Taxon
- Temple fruite0
- Treatment
- irradiated with dosages in excess of 100 krade0
- Outcome
- softer and had less acceptable flavore0
- Setting
- stored 7 days at 35 and 50 Fe0
Not reportedComparatorDirection
Verbatim
e0“Sections from Temple fruit irradiated with dosages in excess of 100 krad and stored 7 days at 35 and 50 F were softer and had less acceptable flavor.”
Claim · model-written summary
After storage was extended to 13 days, irradiated Temples at 50 F showed no flavor difference.
- Taxon
- Templese0
- Treatment
- extending the storage period to 13 dayse0
- Outcome
- flavore0
- Direction
- no differencese0
- Setting
- 50 Fe0
Not reportedComparator
Verbatim
e0“by extending the storage period to 13 days, no differences were observed in the flavor of Temples stored at 50 F”
Claim · model-written summary
The authors do not recommend irradiation for preservation of Florida citrus fruits because of peel injury.
Verbatim
e0“In view of the severity of peel injury irradia tion cannot be recommended for preservation of Florida citrus fruits.”
The same questions in other papers
radiation · quality: postharvest · Citrus sinensis (sweet orange)Positive and negative results
2 in the opposite direction
- positive
- positive
radiation · disease · Ananas comosus (pineapple)Positive and negative results
2 in the opposite direction
- negative
- negative
radiation · quality: general · Citrus x paradisi (grapefruit)Results agree
1 paper in the same direction as this paper
- no effect
radiation · disease · Citrus sinensis (sweet orange)Results agree
2 papers in the same direction as this paper
- 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.