Abstract
BACKGROUND: In recent years there has been increasing consumer pressure to avoid the use of agrochemicals such as chlorine on fresh plant products for extending their shelf life. The combined use of eco-sustainable techniques may be an alternative. The effect of hot water (HW), ultraviolet-C (UV-C) light and high oxygen packaging (HO) on the overall quality of fresh-cut pomegranate arils stored under modified atmosphere packaging (MAP) for up to 14 days at 5 °C was studied. RESULTS: Arils extracted manually, washed with chlorine (100 µL L⁻¹ NaClO, pH 6.5, 5 °C water), rinsed and drained were exposed to single or combined (double and triple) hurdle techniques. The HW treatment consisted of a 30 s immersion in water at 55 °C followed by air surface drying. A 4.54 kJ m⁻² dose was used for the UV-C treatment before packaging. Active MAP with initial 90 kPa O₂ was used in the HO treatment. The respiration rate remained relatively constant throughout shelf life, with no differences among treatments. CO₂ accumulation was higher within HO packages. HW induced a slight reduction in total soluble solids, while no changes in titratable acidity were found. HO-treated arils had the highest phenolic content, while the lowest was found in HW-treated arils. The lowest antioxidant activity was found in HW + UV-C + HO and the highest in UV-C + HO and HO treatments. HW alone or in combination with UV-C and HO inhibited mesophile, mould and yeast growth, while UV-C + HO was most effective for controlling yeast and mould growth. CONCLUSION: UV-C and HO either alone or in combination are promising techniques to preserve the quality of pomegranate arils for up to 14 days at 5 °C.
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Claims 12
Claim · model-written summary
Respiration stayed relatively constant across treatments.
- Taxon
- pomegranate
Punica granatumt0 - Outcome
- respiration ratee0
- Direction
- no differencese0
- Comparator
- among treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The respiration rate remained relatively constant throughout shelf life, with no differences among treatments”
t0“pomegranate arils”
Claim · model-written summary
CO2 accumulation was higher in high oxygen packages.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HO packagese0
- Outcome
- CO₂ accumulatione0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CO₂ accumulation was higher within HO packages”
t0“pomegranate arils”
Claim · model-written summary
Hot water slightly reduced soluble solids.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HWe0
- Outcome
- total soluble solidse0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HW induced a slight reduction in total soluble solids”
t0“pomegranate arils”
Claim · model-written summary
Titratable acidity did not change.
- Taxon
- pomegranatePunica granatumt0
- Outcome
- titratable aciditye0
- Direction
- no changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no changes in titratable acidity were found”
t0“pomegranate arils”
Claim · model-written summary
High oxygen treated arils had the highest phenolic content.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HO-treatede0
- Outcome
- phenolic contente0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HO-treated arils had the highest phenolic content”
t0“pomegranate arils”
Claim · model-written summary
Hot water treated arils had the lowest phenolic content.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HW-treatede0
- Outcome
- loweste0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the lowest was found in HW-treated arils”
t0“pomegranate arils”
Claim · model-written summary
Triple treatment produced the lowest antioxidant activity.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HW + UV-C + HOe0
- Outcome
- antioxidant activitye0
- Direction
- loweste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The lowest antioxidant activity was found in HW + UV-C + HO”
t0“pomegranate arils”
Claim · model-written summary
UV-C plus high oxygen produced the highest antioxidant activity.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- UV-C + HOe0
- Outcome
- antioxidant activitye1
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest in UV-C + HO and HO treatments”
t0“pomegranate arils”
e1“The lowest antioxidant activity was found in HW + UV-C + HO”
Claim · model-written summary
High oxygen treatment produced the highest antioxidant activity.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HO treatmentse0
- Outcome
- antioxidant activitye1
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest in UV-C + HO and HO treatments”
t0“pomegranate arils”
e1“The lowest antioxidant activity was found in HW + UV-C + HO”
Claim · model-written summary
Hot water alone or combined inhibited microbial growth.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- HW alone or in combination with UV-C and HOe0
- Outcome
- mesophile, mould and yeast growthe0
- Direction
- inhibitede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HW alone or in combination with UV-C and HO inhibited mesophile, mould and yeast growth”
t0“pomegranate arils”
Claim · model-written summary
UV-C plus high oxygen was most effective against yeast and mould.
- Taxon
- pomegranatePunica granatumt0
- Treatment
- UV-C + HOe0
- Outcome
- yeast and mould growthe0
- Direction
- most effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-C + HO was most effective for controlling yeast and mould growth”
t0“pomegranate arils”
Claim · model-written summary
UV-C and high oxygen are promising to preserve aril quality for 14 days.
- Taxon
- pomegranatePunica granatume0
- Outcome
- preserve the quality of pomegranate arilse0
- Qualifier
- up to 14 days at 5 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV-C and HO either alone or in combination are promising techniques to preserve the quality of pomegranate arils for up to 14 days at 5 °C”
The same questions in other papers
storage · growth · Punica granatum (pomegranate)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.