Abstract
This study was on the determination of the antioxidant properties of essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]. The oils were extracted using steam distillation method and the antioxidant properties of the oils were evaluated using standard methods. The results of the antioxidant properties showed that A. lepidophyllus had higher total phenolic content (17.33 mg GAE/ml), β-carotene (8.37mg/ml), vitamin E (41.00mg/ml), FRAP (604.90mg AA/g) values than the others, while P. guineense had higher flavonoids (19.37 mg RE/ml) and DPPH (94.50 μg/mL) values than the other samples. The antioxidant properties of the essential oils were comparable to those of other essential oils reported from other plant sources. All the essential oils showed some antioxidant capacity. Higher antioxidant activity of A. lepidophyllus and P. guineense suggests that they contain higher antioxidant properties compared to A. danielli and an indication that they will have stronger effect and may be more useful in the treatment of various cancers and lowering of coronary heart diseases.
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Claims 7
Claim · model-written summary
Afrostyrax lepidophyllus essential oil had higher total phenolic content (17.33 mg GAE/ml) than the other oils
- Taxon
- Afrostyrax lepidophyllus
Afrostyrax lepidophylluse0 - Outcome
- total phenolic contente1
- Direction
- highere1
- Value
- 17.33 mg GAE/mle1
- Comparator
- the otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e1“A. lepidophyllus had higher total phenolic content (17.33 mg GAE/ml), β-carotene (8.37mg/ml), vitamin E (41.00mg/ml), FRAP (604.90mg AA/g) values than the others”
Claim · model-written summary
Afrostyrax lepidophyllus essential oil had higher β-carotene (8.37mg/ml) than the other oils
- Taxon
- Afrostyrax lepidophyllusAfrostyrax lepidophylluse0
- Outcome
- β-carotenee1
- Direction
- highere1
- Value
- 8.37mg/mle1
- Comparator
- the otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e1“A. lepidophyllus had higher total phenolic content (17.33 mg GAE/ml), β-carotene (8.37mg/ml), vitamin E (41.00mg/ml), FRAP (604.90mg AA/g) values than the others”
Claim · model-written summary
Afrostyrax lepidophyllus essential oil had higher vitamin E (41.00mg/ml) than the other oils
- Taxon
- Afrostyrax lepidophyllusAfrostyrax lepidophylluse0
- Outcome
- vitamin Ee1
- Direction
- highere1
- Value
- 41.00mg/mle1
- Comparator
- the otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e1“A. lepidophyllus had higher total phenolic content (17.33 mg GAE/ml), β-carotene (8.37mg/ml), vitamin E (41.00mg/ml), FRAP (604.90mg AA/g) values than the others”
Claim · model-written summary
Afrostyrax lepidophyllus essential oil had higher FRAP (604.90mg AA/g) than the other oils
- Taxon
- Afrostyrax lepidophyllusAfrostyrax lepidophylluse0
- Outcome
- FRAPe1
- Direction
- highere1
- Value
- 604.90mg AA/ge1
- Comparator
- the otherse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e1“A. lepidophyllus had higher total phenolic content (17.33 mg GAE/ml), β-carotene (8.37mg/ml), vitamin E (41.00mg/ml), FRAP (604.90mg AA/g) values than the others”
Claim · model-written summary
Piper guineense essential oil had higher flavonoids (19.37 mg RE/ml) than the other samples
- Taxon
- Piper guineense
.jpg?width=60)
Piper guineensee0 - Outcome
- flavonoidse2
- Direction
- highere2
- Value
- 19.37 mg RE/mle2
- Comparator
- the other samplese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e2“while P. guineense had higher flavonoids (19.37 mg RE/ml) and DPPH (94.50 μg/mL) values than the other samples”
Claim · model-written summary
Piper guineense essential oil had higher DPPH activity (94.50 μg/mL) than the other samples
- Taxon
- Piper guineensePiper guineensee0
- Outcome
- DPPHe2
- Direction
- highere2
- Value
- 94.50 μg/mLe2
- Comparator
- the other samplese2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e2“while P. guineense had higher flavonoids (19.37 mg RE/ml) and DPPH (94.50 μg/mL) values than the other samples”
Claim · model-written summary
All the essential oils showed some antioxidant capacity
Verbatim
e0“essential oils from selected Nigerian spices [Piper guineense (African black pepper), Afromomum danielli (African cardamom) and Afrostyrax lepidophyllus (country onion)]”
e3“All the essential oils showed some antioxidant capacity”