Antioxidant, Total Phenolic and Flavonoid Content of Selected Nigerian Medicinal Plants
Open accessAbstract
Plant phenolics and flavonoids play a great role in scavenging free radicals in the body and act as antioxidants. Thus their determination is sometimes nedded. Total antioxidant capacity, total phenolic and flavonoid contents of the extracts of 10 medicinal plants (Lochnera rosea, Allamanda cathartica, Asplenium platyneuron, Euphorbia prostrate, Baphia nitida, Crotolaria retusa, Zapoteca portoricensis, Platycerium bifurcatum, Mussaenda afzelii and Craterosiphon scandens) from 7 botanical families growing in the tropical rainforest of Nigeria were included in this study. The total antioxidant capacity of the extracts was assessed by using the phosphomolybdate method. The phenolic content was determined by using Folin-Ciocalteau assay, while the total flavonoid was determined by the aluminium chloride colorimetric assay. The results obtained showed that the total antioxidant capacity for all the extracts were in the range of 0.888 ± 0.75 to 0.938 ± 0.00 mg EAA/g. The results showed that E. prostrate, P. bifurcatum and A. platyneuron were found to be the richest source of phenolic (97.77 ± 0.77, 87.62 ± 1.22 and 82.33 ± 0.30 mg GAE/g) while B. nitida and M. afzelii had the least total phenolic content (11.67 ± 0.09 and11.18 ± 0.30 mg GAE/g). The highest total flavonoid content was revealed in P. bifurcatum (648.67 ± 12.3 mg QE) while M. afzelii also had the least total flavonoid content (3.67 ± 0.00 mg QE/g). The ratio of flavonoid to the phenolic in each extract was also determined to ascertain extracts that are rich in flavonoids.Dhaka Univ. J. Pharm. Sci. 14(1): 35-41, 2015 (June)
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Banana peel contains higher gallocatechin (158 mg/100g DW) than pulp (29.6 mg/100g DW).
“Shinichi et al. [83] revealed in her study that peel contained higher gallocatechin (158 mg/100g DW) than pulp (29.6 mg/100g DW).”
From Functional, nutritional and medicinal potential of banana peel (2023) · cites this paper as [83]
The Results and Discussion table reports total phenolic and flavonoid content for selected Nigerian medicinal plants, not gallocatechin in banana peel or pulp. The copy is not truncated, and searches for “gallocatechin,” “banana peel,” and the stated values found no passage addressing the comparison; page numbers were unavailable. (LLM, conf=0.76)
Experimental — accuracy not yet measuredBanana peel extract contains gallocatechin, which demonstrates significant antioxidant activity.
“The banana peel extract was found to contain gallocatechin which demonstrated significant antioxidant activity.”
From Functional, nutritional and medicinal potential of banana peel (2023) · cites this paper as [83]
The Conclusion lists the Nigerian medicinal plants studied, and the Total antioxidant capacity section discusses antioxidant activity in those extracts, but neither addresses banana peel or gallocatechin. Searches for “banana peel gallocatechin” and “Musa banana peel catechin gallocatechin” found no relevant passage. Page numbers were not available in our copy. (LLM, conf=0.76)
Experimental — accuracy not yet measuredBanana peel extract is more potent than banana pulp extract against lipid autoxidation.
“It was also more potent than the banana pulp extract against lipid autoxidation.”
From Functional, nutritional and medicinal potential of banana peel (2023) · cites this paper as [83]
The Total antioxidant capacity (TAC) section discusses antioxidant activity in selected Nigerian medicinal plants, and the Conclusion lists the extracts studied; neither addresses banana peel or pulp. Searches for banana peel, banana pulp, and lipid autoxidation found no comparison in our copy. No page numbers are available for these passages. (LLM, conf=0.78)
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Research works printed but not linked: 2
- Harborne, J.B. 1984. Phytochemical methods: A guide to modern techniques of plant analysis, 2nd edition, Chapman and Hall, New York, p. 288.
- Pękal, A. and Pyrzynska, K. 2012. Evaluation of aluminium complexation reaction for flavonoid content assay. Food Anal. Methods DOI 10.1007/s12161-014-9814-x in the leaves of Caesalpinia pulcherrima (Linn.). Int. J. Phyto. Res. 2, 16-19. · DOI
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Functional, nutritional and medicinal potential of banana peel
Hashim, M. (2023) · Pure and Applied Biology · doi:10.19045/bspab.2023.120049 · Cited by 11 · see citing works
- Authors
- Agbo, M. O., Uzor, P. F., Akazie Nneji, U. N., Eze Odurukwe, C. U., Ogbatue, U. B., & Mbaoji, E. C.
- Affiliations
- University of Nigeria (NG)
- Venue
- Dhaka University Journal of Pharmaceutical Sciences
- Publisher
- Bangladesh Academy of Sciences
- Published
- 2015-06-18
- Volume
- 14
- Issue
- 1
- Pages
- 35-41
- ISSN
- 1816-1820 (ISSN-L)
- 1816-1839
- OpenAlex
- W1954813072
- Cited by
- 94
- References
- 0
- Citations by year
- 2026: 10 · 2025: 16 · 2024: 11 · 2023: 10 · 2022: 15 · 2021: 5 · 2020: 10 · 2019: 5 · 2018: 6 · 2017: 2 · 2016: 3 · 2015: 1
- FWCI
- 2.75
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- cc-by-nc-nd
- Locations
- Dhaka University Journal of Pharmaceutical Sciences (publishedVersion, cc-by-nc-nd)
- Topics
- Health Sciences › Medicine › Biochemistry › Phytochemicals and Antioxidant Activities
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Medicinal Plant Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Phytochemistry and Biological Activities
- Keywords
- medicinal plants, antioxidant capacity, total phenolic content, total flavonoid content, plant extracts, tropical rainforest plants, Platycerium bifurcatum, Allamanda cathartica, Baphia nitida, Asplenium platyneuron
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