Paper · 1971 · Journal of Food Science

LIPOXYGENASE CONTENT AND ANTIOXIDANT ACTIVITY OF SOME FRUITS AND VEGETABLES

A. PINSKY; S. GROSSMAN; M. TROP

11
claims
25
verbatim quotes
130
citations
1
research areas
—
Not open access

Abstract

SUMMARY The oxygen monitor was used in determining the linoleic acid oxidizing capacity of various plant tissues. Egg plant, potato, legume seeds, cauliflower and avocado contained considerable activity. The effects of nonionic detergents point to the presence of three types of lipoxygenase in the tissues tested. These are: (1) not affected by the detergent; (2) inhibited; and (3) either solubilized or stimulated by the detergent. Some tissues had considerable antioxidant activity as measured by their effect on commercial soybean lipoxygenase. These results lead to the conclusion that a low lipoxygenase activity may be due to the presence of antioxidants and definite conclusions cannot be drawn unless the enzyme is purified.

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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 11

Observationobservedoriginal resultmeasured

Claim · model-written summary

Egg plant tissue had considerable linoleic acid oxidizing capacity.

Taxon
Egg plantSolanum melongenae1
Outcome
linoleic acid oxidizing capacitye0
Qualifier
considerablee1

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

Solanum melongena
Solanum melongena · TaxonBeraDigle · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The oxygen monitor was used in determining the linoleic acid oxidizing capacity of various plant tissues”

✓ located verbatim in the source · abstract, characters 8–112 · show in text ↑
e1

“Egg plant, potato, legume seeds, cauliflower and avocado contained considerable activity”

✓ located verbatim in the source · abstract, characters 114–202 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Potato tissue had considerable linoleic acid oxidizing capacity.

Outcome
linoleic acid oxidizing capacitye0
Qualifier
considerablee1

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

Solanum tuberosum
Solanum tuberosum · TaxonScott Bauer, USDA ARS · Public domain · Wikimedia Commons ↗

Verbatim

e0

“The oxygen monitor was used in determining the linoleic acid oxidizing capacity of various plant tissues”

✓ located verbatim in the source · abstract, characters 8–112 · show in text ↑
e1

“Egg plant, potato, legume seeds, cauliflower and avocado contained considerable activity”

✓ located verbatim in the source · abstract, characters 114–202 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Legume seed tissue had considerable linoleic acid oxidizing capacity.

Taxon
legume seedse1
Outcome
linoleic acid oxidizing capacitye0
Qualifier
considerablee1

Verbatim

e0

“The oxygen monitor was used in determining the linoleic acid oxidizing capacity of various plant tissues”

✓ located verbatim in the source · abstract, characters 8–112 · show in text ↑
e1

“Egg plant, potato, legume seeds, cauliflower and avocado contained considerable activity”

✓ located verbatim in the source · abstract, characters 114–202 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cauliflower tissue had considerable linoleic acid oxidizing capacity.

Outcome
linoleic acid oxidizing capacitye0
Qualifier
considerablee1

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

Brassica oleracea var. botrytis
Brassica oleracea var. botrytis · TaxonSusan Slater · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“The oxygen monitor was used in determining the linoleic acid oxidizing capacity of various plant tissues”

✓ located verbatim in the source · abstract, characters 8–112 · show in text ↑
e1

“Egg plant, potato, legume seeds, cauliflower and avocado contained considerable activity”

✓ located verbatim in the source · abstract, characters 114–202 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Avocado tissue had considerable linoleic acid oxidizing capacity.

Taxon
avocadoPersea americanae1
Outcome
linoleic acid oxidizing capacitye0
Qualifier
considerablee1

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

Persea americana
Persea americana · TaxonB.navez · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The oxygen monitor was used in determining the linoleic acid oxidizing capacity of various plant tissues”

✓ located verbatim in the source · abstract, characters 8–112 · show in text ↑
e1

“Egg plant, potato, legume seeds, cauliflower and avocado contained considerable activity”

✓ located verbatim in the source · abstract, characters 114–202 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

The effects of nonionic detergents point to three types of lipoxygenase in the tissues tested.

Taxon
FRUITS AND VEGETABLESt0
Treatment
nonionic detergentse2
Outcome
presence of three types of lipoxygenasee2

Verbatim

t0

“FRUITS AND VEGETABLES”

✓ located verbatim in the source · title, characters 54–75 · show in text ↑
e2

“The effects of nonionic detergents point to the presence of three types of lipoxygenase in the tissues tested”

✓ located verbatim in the source · abstract, characters 204–313 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

One lipoxygenase type was not affected by nonionic detergents.

Taxon
FRUITS AND VEGETABLESt0
Treatment
nonionic detergentse2
Outcome
lipoxygenasee2
Direction
not affectede3

Not reportedComparator

Verbatim

t0

“FRUITS AND VEGETABLES”

✓ located verbatim in the source · title, characters 54–75 · show in text ↑
e2

“The effects of nonionic detergents point to the presence of three types of lipoxygenase in the tissues tested”

✓ located verbatim in the source · abstract, characters 204–313 · show in text ↑
e3

“(1) not affected by the detergent”

✓ located verbatim in the source · abstract, characters 326–359 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

One lipoxygenase type was inhibited by nonionic detergents.

Taxon
FRUITS AND VEGETABLESt0
Treatment
nonionic detergentse2
Outcome
lipoxygenasee2
Direction
inhibitede4

Not reportedComparator

Verbatim

t0

“FRUITS AND VEGETABLES”

✓ located verbatim in the source · title, characters 54–75 · show in text ↑
e2

“The effects of nonionic detergents point to the presence of three types of lipoxygenase in the tissues tested”

✓ located verbatim in the source · abstract, characters 204–313 · show in text ↑
e4

“(2) inhibited”

✓ located verbatim in the source · abstract, characters 361–374 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

One lipoxygenase type was solubilized or stimulated by nonionic detergents.

Taxon
FRUITS AND VEGETABLESt0
Treatment
nonionic detergentse2
Outcome
lipoxygenasee2
Direction
solubilized or stimulatede5

Not reportedComparator

Verbatim

t0

“FRUITS AND VEGETABLES”

✓ located verbatim in the source · title, characters 54–75 · show in text ↑
e2

“The effects of nonionic detergents point to the presence of three types of lipoxygenase in the tissues tested”

✓ located verbatim in the source · abstract, characters 204–313 · show in text ↑
e5

“(3) either solubilized or stimulated by the detergent”

✓ located verbatim in the source · abstract, characters 380–433 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Some tissues had considerable antioxidant activity measured by their effect on commercial soybean lipoxygenase.

Taxon
FRUITS AND VEGETABLESt0
Outcome
antioxidant activitye6
Qualifier
as measured by their effect on commercial soybean lipoxygenasee6

Verbatim

t0

“FRUITS AND VEGETABLES”

✓ located verbatim in the source · title, characters 54–75 · show in text ↑
e6

“Some tissues had considerable antioxidant activity as measured by their effect on commercial soybean lipoxygenase”

✓ located verbatim in the source · abstract, characters 435–548 · show in text ↑
Mechanismhypothesisoriginal resultbasis n/a

Claim · model-written summary

Low lipoxygenase activity may be due to the presence of antioxidants.

Taxon
FRUITS AND VEGETABLESt0
Compound
antioxidantse7
Outcome
low lipoxygenase activitye7

Verbatim

t0

“FRUITS AND VEGETABLES”

✓ located verbatim in the source · title, characters 54–75 · show in text ↑
e7

“a low lipoxygenase activity may be due to the presence of antioxidants”

✓ located verbatim in the source · abstract, characters 592–662 · show in text ↑