Paper · 2024 · Journal of Sohag Agriscience (JSAS)/Journal of Sohag Agriscience (JSAS)

Effects of Refrigeration and Freezing on Nitrate, Nitrite, and Oxalate Levels in Green Beans and Peas..

Mohamed A. Kelany; Rania G. Mohamed; Khalid A. El-Shikh; et al.

7
claims
8
verbatim quotes
0
citations
1
research areas
✓
Open access

Abstract

This study investigates the effect of the blanching, refrigeration, and freezing on nitrate, nitrite, and oxalate levels in green beans and peas. Besides, the impact of these preservation methods on the nutritional and safety aspects of these vegetables was studied. The data revealed that the refrigeration significantly impacts nitrate levels in both green beans and peas, potentially due to biochemical and metabolic processes. Furthermore, there was a notable decrease in nitrate content from 2121.17 mg.kg-1 to 1371.74 mg.kg-1 in green beans after blanching and six months of freezing storage. This reduction in nitrate levels is attributed to both blanching and freezing storage, potentially influenced by enzymatic activities and chemical reactions. The study also observed a decline in oxalate levels, suggesting that blanching and freezing storage contribute to reduced oxalate content, likely influenced by enzymatic and chemical reactions. These findings align with previous research indicating significant reductions in nitrates, nitrites, and oxalates due to blanching, particularly for leafy vegetables, reinforcing the observed trends during freezing storage. In essence, the cold storage, blanching, and freezing processes led to reduced levels of nitrate, nitrite, and oxalates in green beans and peas.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 7

Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Refrigeration significantly affected nitrate levels in green beans.

Taxon
green beanse0
Treatment
refrigeratione0
Outcome
nitrate levelse0

Not reportedComparatorDirection

Verbatim

e0

“The data revealed that the refrigeration significantly impacts nitrate levels in both green beans and peas, potentially due to biochemical and metabolic processes.”

✓ located verbatim in the source · abstract, characters 267–430 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Refrigeration significantly affected nitrate levels in peas.

Treatment
refrigeratione0
Outcome
nitrate levelse0

Not reportedComparatorDirection

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Lathyrus oleraceus
Lathyrus oleraceus · TaxonRenee Comet (photographer) AV Number: AV-9400-4164 · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The data revealed that the refrigeration significantly impacts nitrate levels in both green beans and peas, potentially due to biochemical and metabolic processes.”

✓ located verbatim in the source · abstract, characters 267–430 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Blanching followed by six months of freezing decreased nitrate in green beans from 2121.17 to 1371.74 mg.kg-1.

Taxon
green beanse0
Treatment
blanching and six months of freezing storagee0
Outcome
nitrate contente0
Direction
decreasee0
Value
1371.74 mg.kg-1e0
Qualifier
2121.17 mg.kg-1e0

Not reportedComparator

Verbatim

e0

“there was a notable decrease in nitrate content from 2121.17 mg.kg-1 to 1371.74 mg.kg-1 in green beans after blanching and six months of freezing storage.”

✓ located verbatim in the source · abstract, characters 444–598 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Blanching and freezing reduced oxalate levels in green beans and peas.

Taxon
green beans and peast0
Treatment
blanching and freezing storagee0
Outcome
oxalate levelse0
Direction
declinee0

Not reportedComparator

Verbatim

e0

“The study also observed a decline in oxalate levels, suggesting that blanching and freezing storage contribute to reduced oxalate content, likely influenced by enzymatic and chemical reactions.”

✓ located verbatim in the source · abstract, characters 757–950 · show in text ↑
t0

“Green Beans and Peas”

✓ located verbatim in the source · title, characters 81–101 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cold storage, blanching and freezing reduced nitrate levels in green beans and peas.

Taxon
green beans and pease0
Treatment
cold storage, blanching, and freezing processese0
Outcome
nitratee0
Direction
reducede0

Not reportedComparator

Verbatim

e0

“the cold storage, blanching, and freezing processes led to reduced levels of nitrate, nitrite, and oxalates in green beans and peas.”

✓ located verbatim in the source · abstract, characters 1187–1319 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cold storage, blanching and freezing reduced nitrite levels in green beans and peas.

Taxon
green beans and pease0
Treatment
cold storage, blanching, and freezing processese0
Outcome
nitritee0
Direction
reducede0

Not reportedComparator

Verbatim

e0

“the cold storage, blanching, and freezing processes led to reduced levels of nitrate, nitrite, and oxalates in green beans and peas.”

✓ located verbatim in the source · abstract, characters 1187–1319 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Cold storage, blanching and freezing reduced oxalate levels in green beans and peas.

Taxon
green beans and pease0
Treatment
cold storage, blanching, and freezing processese0
Outcome
oxalatese0
Direction
reducede0

Not reportedComparator

Verbatim

e0

“the cold storage, blanching, and freezing processes led to reduced levels of nitrate, nitrite, and oxalates in green beans and peas.”

✓ located verbatim in the source · abstract, characters 1187–1319 · show in text ↑

cold · nutrient: content · Phaseolus vulgaris (common bean)Positive and negative results

3 papers: 1 positive, 2 negative or no effect

2 in the opposite direction

  1. negative
  2. no effect
See all 3 papers →

cold · nutrient: content · Lathyrus oleraceus (pea)Positive and negative results

3 papers: 1 positive, 2 negative or no effect

2 in the opposite direction

  1. negative
  2. no effect
See all 3 papers →

processing · nutrient: content · Phaseolus vulgaris (common bean)Positive and negative results

5 papers: 2 positive, 3 negative or no effect

1 paper in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. negative
  3. negative

1 paper more in this group

See all 5 papers →

storage · nutrient: content · Phaseolus vulgaris (common bean)Positive and negative results

5 papers: 1 positive, 4 negative or no effect

3 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
  2. no effect
  3. negative

1 paper more in this group

See all 5 papers →

cold · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results

7 papers: 5 positive, 2 negative or no effect

4 papers in the same direction as this paper · 2 in the opposite direction

  1. negative
  2. no effect
  3. positive

3 papers more in this group

See all 7 papers →

cold · molecular: metabolites · Phaseolus vulgaris (common bean)Positive and negative results

7 papers: 4 positive, 3 negative or no effect

3 papers in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. no effect
  3. negative

3 papers more in this group

See all 7 papers →

storage · molecular: metabolites · Phaseolus vulgaris (common bean)Positive and negative results

9 papers: 6 positive, 3 negative or no effect

5 papers in the same direction as this paper · 3 in the opposite direction

  1. negative
  2. negative
  3. negative

5 papers more in this group

See all 9 papers →

processing · molecular: metabolites · Lathyrus oleraceus (pea)Positive and negative results

15 papers: 10 positive, 5 negative or no effect

9 papers in the same direction as this paper · 5 in the opposite direction

  1. no effect
  2. negative
  3. negative

11 papers more in this group

See all 15 papers →

8 of 11 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.