Abstract
The objective of the study was to determine the effectiveness of acidulant dip treatments (with or without aqueous ozone) to reduce enzymatic browning and to extend the shelf life of fresh-cut potato slices during refrigerated storage (4 °C) for 28 d. Potato slices subjected to aqueous ozone (2 ppm) had significantly (P≤ 0.05) higher L-values and lower a-values, but ozone did not appear to have any effect on aerobic plate counts (APCs) or polyphenol oxidase (PPO) activity. NatureSeal (NS) and sodium acid sulfate (SAS) were the most effective acidulant treatments in reducing browning (significantly [P≤ 0.05] higher L-values, lower a-values, and browning index values) regardless of ozone treatment. NS and SAS also had lower PPO activity compared to other treatments on days 0 and 28, and significantly (P≤ 0.05) lower APCs (≤2.00 log CFU/g) over refrigerated storage. Therefore, the SAS treatment was comparable to NS, a commercially available product, and showed promise as an effective antibrowning dip to reduce browning and spoilage in fresh-cut potato products. Practical Application: A 1% SAS dip treatment which included 1% citric and 1% ascorbic acid was found to be an effective antibrowning dip for fresh-cut potatoes along with NatureSeal®'s PS-10, compared to other treatments. They were both effective in maintaining low microbial counts over refrigerated storage. Additionally, aqueous ozone washes (2 ppm) showed significant benefits to reduce browning; however, ozone did not affect microbial counts or PPO enzyme activity. Therefore, the SAS treatment could have potential use in the fruit and vegetable industry to reduce browning and spoilage in fresh-cut potato products.
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Claims 5
Claim · model-written summary
Aqueous ozone raised L-values and lowered a-values.
- Taxon
- Potato
Solanum tuberosume0 - Treatment
- aqueous ozone (2 ppm)e0
- Outcome
- L-values and lower a-valuese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Potato slices subjected to aqueous ozone (2 ppm) had significantly (P≤ 0.05) higher L-values and lower a-values”
Claim · model-written summary
Ozone did not appear to affect aerobic plate counts or PPO activity.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- ozonee0
- Outcome
- aerobic plate counts (APCs) or polyphenol oxidase (PPO) activitye0
- Direction
- did not appear to have any effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ozone did not appear to have any effect on aerobic plate counts (APCs) or polyphenol oxidase (PPO) activity”
t0“Potato”
Claim · model-written summary
NatureSeal and sodium acid sulfate reduced browning relative to other treatments.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- NatureSeal (NS) and sodium acid sulfate (SAS)e0
- Outcome
- browninge0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NatureSeal (NS) and sodium acid sulfate (SAS) were the most effective acidulant treatments in reducing browning (significantly [P≤ 0.05] higher L-values, lower a-values, and browning index values) regardless of ozone treatment.”
t0“Potato”
Claim · model-written summary
NS and SAS had lower PPO activity than other treatments on days 0 and 28.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- NS and SASe0
- Outcome
- PPO activitye0
- Direction
- lowere0
- Qualifier
- days 0 and 28e0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“NS and SAS also had lower PPO activity compared to other treatments on days 0 and 28”
t0“Potato”
Claim · model-written summary
NS and SAS had significantly lower APCs during refrigerated storage.
- Taxon
- PotatoSolanum tuberosumt0
- Treatment
- NS and SASe1
- Outcome
- APCse0
- Direction
- lowere0
- Value
- ≤2.00 log CFU/ge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly (P≤ 0.05) lower APCs (≤2.00 log CFU/g) over refrigerated storage”
t0“Potato”
e1“NS and SAS”
The same questions in other papers
sodium atom · physiology: antioxidant enzymes · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- no effect
sodium atom · disease · Solanum tuberosum (potato)Results agree
2 papers in the same direction as this paper
- positive
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sulfate · disease · Solanum tuberosum (potato)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
ozone · physiology: antioxidant enzymes · Solanum tuberosum (potato)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
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.