Paper · 2016 · Suez Canal University Journal of Food Sciences

Impact of Freezing and Freeze-drying Processes on Color, Phytochemical Contents and Antioxidant Capacity of Pomegranate Seeds

Al-Sanabani S; K. Youssef; A. Shatta; et al.

12
claims
14
verbatim quotes
7
citations
2
research areas
—
Not open access

Abstract

The effects of freezing and freeze-drying processes on the antioxidant capacity and some phytochemicalcontents as well as the color of pomegranate seeds were evaluated. The fresh pomegranate seeds exhibited highantioxidant activity (79.50% and 3894.73 μmol trolox/100 g dry weight, measured by DPPH and ABTS assays,respectively). The pomegranate seeds had high contents of total anthocyanins (22.80 mg/100 g), total phenolics (633.55mg GAE/100 g) and total flavonoids (593.23 mg quercetin equivalent/100 g). Processing did not significantly affect thecolor attributes of the pomegranate seeds except the hue angle values. Freeze-drying process significantly decreased theantioxidant activity and phytochemicals contents of pomegranate seeds whereas freezing process had less negativeeffect. The total anthocyanins, total phenolic and total flavonoid contents of pomegranate seeds well correlated withtheir antioxidant capacity. The best correlations were between the total anthocyanins content with DPPH radicalscavenging activity (R2= 0.9652) and ABTS•+ scavenging capacity (0.9752) values.

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Claims 12

Observationobservedoriginal resultmeasured

Claim · model-written summary

Fresh pomegranate seeds had high antioxidant activity of 79.50% measured by DPPH.

Taxon
pomegranatePunica granatume0
Organ / stage
fresh pomegranate seedse0
Outcome
antioxidant activitye0
Value
79.50%e0
Qualifier
measured by DPPHe0

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The fresh pomegranate seeds exhibited highantioxidant activity (79.50% and 3894.73 μmol trolox/100 g dry weight, measured by DPPH and ABTS assays,respectively)”

✓ located verbatim in the source · abstract, characters 169–328 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fresh pomegranate seeds had high antioxidant activity of 3894.73 μmol trolox per 100 g dry weight measured by ABTS.

Taxon
pomegranatePunica granatume0
Organ / stage
fresh pomegranate seedse0
Outcome
antioxidant activitye0
Value
3894.73 μmol trolox/100 g dry weighte0
Qualifier
ABTS assayse0

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The fresh pomegranate seeds exhibited highantioxidant activity (79.50% and 3894.73 μmol trolox/100 g dry weight, measured by DPPH and ABTS assays,respectively)”

✓ located verbatim in the source · abstract, characters 169–328 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Pomegranate seeds had high total anthocyanin content of 22.80 mg per 100 g.

Taxon
pomegranatePunica granatume0
Outcome
total anthocyaninse0
Value
22.80 mg/100 ge0

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The pomegranate seeds had high contents of total anthocyanins (22.80 mg/100 g), total phenolics (633.55mg GAE/100 g) and total flavonoids (593.23 mg quercetin equivalent/100 g)”

✓ located verbatim in the source · abstract, characters 330–506 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Pomegranate seeds had high total phenolic content of 633.55 mg GAE per 100 g.

Taxon
pomegranatePunica granatume0
Outcome
total phenolicse0
Value
633.55mg GAE/100 ge0

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The pomegranate seeds had high contents of total anthocyanins (22.80 mg/100 g), total phenolics (633.55mg GAE/100 g) and total flavonoids (593.23 mg quercetin equivalent/100 g)”

✓ located verbatim in the source · abstract, characters 330–506 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Pomegranate seeds had high total flavonoid content of 593.23 mg quercetin equivalent per 100 g.

Taxon
pomegranatePunica granatume0
Outcome
total flavonoidse0
Value
593.23 mg quercetin equivalent/100 ge0

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The pomegranate seeds had high contents of total anthocyanins (22.80 mg/100 g), total phenolics (633.55mg GAE/100 g) and total flavonoids (593.23 mg quercetin equivalent/100 g)”

✓ located verbatim in the source · abstract, characters 330–506 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

Processing did not significantly affect the colour attributes of pomegranate seeds.

Taxon
pomegranatePunica granatume0
Treatment
Processinge0
Outcome
color attributese0
Direction
did not significantly affecte0

Not reportedComparator

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Processing did not significantly affect thecolor attributes of the pomegranate seeds except the hue angle values”

✓ located verbatim in the source · abstract, characters 508–620 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Processing significantly affected the hue angle of pomegranate seeds.

Taxon
pomegranatePunica granatume0
Treatment
Processinge0
Outcome
hue angle valuese0

Not reportedComparatorDirection

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Processing did not significantly affect thecolor attributes of the pomegranate seeds except the hue angle values”

✓ located verbatim in the source · abstract, characters 508–620 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Freeze-drying significantly decreased the antioxidant activity and phytochemical contents of pomegranate seeds.

Taxon
pomegranatePunica granatume0
Treatment
Freeze-drying processe0
Outcome
antioxidant activity and phytochemicals contentse0
Direction
significantly decreasede0

Not reportedComparator

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Freeze-drying process significantly decreased theantioxidant activity and phytochemicals contents of pomegranate seeds whereas freezing process had less negativeeffect”

✓ located verbatim in the source · abstract, characters 622–789 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

The freezing process had a less negative effect than freeze-drying on the antioxidant activity and phytochemical contents of pomegranate seeds.

Taxon
pomegranatePunica granatume0
Treatment
freezing processe0
Outcome
negative effecte0
Direction
less negativee0
Comparator
Freeze-drying processe0

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Freeze-drying process significantly decreased theantioxidant activity and phytochemicals contents of pomegranate seeds whereas freezing process had less negativeeffect”

✓ located verbatim in the source · abstract, characters 622–789 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Total anthocyanins, total phenolics and total flavonoids of pomegranate seeds were well correlated with their antioxidant capacity.

Taxon
pomegranatePunica granatume0
Compound
total anthocyanins, total phenolic and total flavonoid contentse0
Outcome
antioxidant capacitye0

Not reportedDirection

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The total anthocyanins, total phenolic and total flavonoid contents of pomegranate seeds well correlated withtheir antioxidant capacity”

✓ located verbatim in the source · abstract, characters 791–926 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The total anthocyanin content had the best correlation with DPPH radical scavenging activity (R2 = 0.9652).

Taxon
pomegranatePunica granatume1
Compound
total anthocyaninse0
Outcome
DPPH radicalscavenging activitye0
Value
R2= 0.9652e0

Not reportedDirection

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The best correlations were between the total anthocyanins content with DPPH radicalscavenging activity (R2= 0.9652) and ABTS•+ scavenging capacity (0.9752)”

✓ located verbatim in the source · abstract, characters 928–1083 · show in text ↑
e1

“The pomegranate seeds had high contents of total anthocyanins”

✓ located verbatim in the source · abstract, characters 330–391 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The total anthocyanin content had a best correlation with ABTS•+ scavenging capacity (0.9752).

Taxon
pomegranatePunica granatume1
Compound
total anthocyaninse0
Outcome
ABTS•+ scavenging capacitye0
Value
0.9752e0

Not reportedDirection

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

Punica granatum
Punica granatum · TaxonH. Zell · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The best correlations were between the total anthocyanins content with DPPH radicalscavenging activity (R2= 0.9652) and ABTS•+ scavenging capacity (0.9752)”

✓ located verbatim in the source · abstract, characters 928–1083 · show in text ↑
e1

“The pomegranate seeds had high contents of total anthocyanins”

✓ located verbatim in the source · abstract, characters 330–391 · show in text ↑

cold · quality: phytochemicals · Punica granatum (pomegranate)Positive and negative results

3 papers: 2 positive, 1 negative or no effect

2 in the opposite direction

  1. positive
  2. positive
See all 3 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.