Abstract
A total of 36 compounds, which comprised 99.4% of the extract, were identified by gas chromatography and mass spectrometry (GC-MS) in the volatile dichloromethane extract obtained from Egyptian corn silk. The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%). Dried Egyptian corn silk was also directly extracted with petroleum ether, ethanol, and water. All extracts from solvent extraction and the volatile extract described above exhibited clear antioxidant activities at levels of 50-400 microg/mL in the 2,2-diphenyl-1-picrylhydrazyl (DPPH)/linoleic acid assay. The ethanol extract inhibited DPPH activity by 84% at a level of 400 microg/mL. All samples tested via the beta-carotene bleaching assay also exhibited satisfactory antioxidant activity with clear dose responses. This study indicates that corn silk could be used to produce novel natural antioxidants as well as a flavoring agent in various food products.
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Claims 12
Claim · model-written summary
GC-MS identified 36 compounds comprising 99.4% of the volatile extract of Egyptian corn silk.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e0“A total of 36 compounds, which comprised 99.4% of the extract, were identified by gas chromatography and mass spectrometry (GC-MS) in the volatile dichloromethane extract obtained from Egyptian corn silk”
Claim · model-written summary
cis-alpha-terpineol was the main constituent of the volatile extract at 24.22%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
6,11-oxidoacor-4-ene was a main constituent of the volatile extract at 18.06%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
Citronellol was a main constituent of the volatile extract at 16.18%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
trans-Pinocamphone was a main constituent of the volatile extract at 5.86%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
Eugenol was a main constituent of the volatile extract at 4.37%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
neo-iso-3-Thujanol was a main constituent of the volatile extract at 2.59%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
cis-Sabinene hydrate was a main constituent of the volatile extract at 2.28%.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e1“The main constituents of the volatile extract were cis-alpha-terpineol (24.22%), 6,11-oxidoacor-4-ene (18.06%), citronellol (16.18%), trans-pinocamphone (5.86%), eugenol (4.37%), neo-iso-3-thujanol (2.59%), and cis-sabinene hydrate (2.28%)”
Claim · model-written summary
Corn silk extracts showed clear antioxidant activities at 50-400 microg/mL in the DPPH/linoleic acid assay.
- Outcome
- antioxidant activitiese2
- Value
- 50-400 microg/mLe2
- Qualifier
- in the 2,2-diphenyl-1-picrylhydrazyl (DPPH)/linoleic acid assaye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e2“All extracts from solvent extraction and the volatile extract described above exhibited clear antioxidant activities at levels of 50-400 microg/mL in the 2,2-diphenyl-1-picrylhydrazyl (DPPH)/linoleic acid assay”
Claim · model-written summary
The ethanol extract inhibited DPPH activity by 84% at 400 microg/mL.
- Treatment
- ethanol extracte3
- Outcome
- DPPH activitye3
- Direction
- inhibitede3
- Value
- 84%e3
- Qualifier
- at a level of 400 microg/mLe3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e3“The ethanol extract inhibited DPPH activity by 84% at a level of 400 microg/mL”
Claim · model-written summary
Corn silk extracts showed satisfactory antioxidant activity with clear dose responses in the beta-carotene bleaching assay.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Corn Silk (Zea mays L.)”
e4“All samples tested via the beta-carotene bleaching assay also exhibited satisfactory antioxidant activity with clear dose responses”
Claim · model-written summary
Corn silk could be used to produce novel natural antioxidants and a flavouring agent.
Verbatim
t0“Corn Silk (Zea mays L.)”
e5“This study indicates that corn silk could be used to produce novel natural antioxidants as well as a flavoring agent in various food products”
The same questions in other papers
botanical · quality: phytochemicals · Zea mays (maize)Positive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
2 papers more in this group
See all 6 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.