Cited by 50Essential Oils and Antimicrobial ActivityMedicinal Plant ResearchBanana Cultivation and Research

Inhibition of dehydrogenase activity in pathogenic bacteria isolates by aqueous extracts of Musa paradisiaca (var Sapientum)

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Alisi, C S, Nwanyanwu, C E, Akujobi, C O, Ibegbulem, C O·2008·African Journal of Biotechnology

Abstract

Inhibition of dehydrogenase activity in pathogenic bacteria isolates by aqueous extract from the unripe fruit peels (called the bark) and leaves of Musa paradisiaca var sapientum were investigated via dehydrogenase assay using 2,3,5-triphenyl tetrazolium chloride (TTC) as the electron acceptor. Pure cultures of Staphylococcus and Pseudomonas species were exposed to varied concentrations of the extract [0 – 2000 µg/ml]. The extracts exhibited concentration dependent response against the tested organisms. Dehydrogenase activities (mg Formazan/mg cell dry weight/h) in the Gram-positive Staphylococcus sp. and Gram-negative Pseudomonas sp. were 1.125 ± 0.056 and 0.740 ± 0.040, respectively, and were progressively inhibited in the pure cultures. Threshold inhibitory concentrations (IC50) of M. paradisiaca bark extract were 143.5 and 183.1 µg/ml against Staphylococcus and Pseudomonasspecies, respectively, while the threshold inhibitory concentrations (IC50) of M. paradisiaca leaf extract were 401.2 and 594.6 µg/ml, respectively. The IC100 of the leaf extract against Staphylococcus and Pseudomonas species were 1850 and 2000 µg/ml respectively, while the bark could not completely inhibit the organisms at the tested concentrations. The bark and leaves of M. paradisiacamay be an available source of raw material for the production of chemotherapeutic agents against pathogenic bacteria. Key words: Musa paradisiaca, dehydrogenase activity, pathogenic bacteria..

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Crossref · 10.5897/ajb2008.000-5029

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  • Phenolic compounds exhibit antioxidant activity by neutralizing lipid free radicals or preventing hydrogen peroxides from disintegrating into free radicals.

    “Phenolic compounds are the most essential plant elements that exhibit antioxidant activity by neutralizing lipid free radicals or by preventing hydrogen peroxides from disintegration into free radicals [93,94].”

    From Functional, nutritional and medicinal potential of banana peel (2023) · cites this paper as [93]

    The Results and Discussion section reports phytochemicals in Musa paradisiaca extracts and suggests possible antimicrobial activity, but does not discuss antioxidant activity. Searches for phenolic antioxidants, lipid free radicals, and hydrogen peroxide found no passage addressing the claimed mechanisms; page numbers were unavailable in our copy. (LLM, conf=0.77)

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Research works printed but not linked: 2

  1. Nweke CO, Alisi CS, Okolo JC, Nwanyanwu CE (2007). Toxicity of Zinc to heterotrophic bacteria of tropical river sediments. Appl. Eco. Envron. Res. 5(1): 123-132.
  2. Trease GE, Evans WC (1989). Pharmacognosy. 13th edition. Bacilliere Tinall Ltd, London. pp. 5-9.

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Authors
Alisi, C. S., Nwanyanwu, C. E., Akujobi, C. O., & Ibegbulem, C. O.
Venue
African Journal of Biotechnology
Published
2008-06-17
Volume
7
Issue
12
Pages
1821-1825
ISSN
1684-5315 (ISSN-L)
OpenAlex
W2166721197
Cited by
50
References
13
Citations by year
2025: 3 · 2024: 1 · 2023: 7 · 2022: 1 · 2021: 2 · 2020: 3 · 2019: 1 · 2018: 2 · 2017: 2 · 2016: 6 · 2015: 2 · 2014: 8 · 2013: 4 · 2012: 3
FWCI
2.67
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
AFRICAN JOURNAL OF BIOTECHNOLOGY (publishedVersion, cc-by)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Medicinal Plant Research
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Banana Cultivation and Research
Keywords
Musa paradisiaca, dehydrogenase inhibition, pathogenic bacteria, Staphylococcus, Pseudomonas, aqueous plant extract, banana leaf extract, antibacterial activity, anticancer agents

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