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In Vitro Antibacterial Activities of Methanol and Aqueous Extracts of Leaves of Carica papaya and Moringa oleifera Against Selected Human Pathogenic Bacteria

Received: 30 August 2021    Accepted: 14 September 2021    Published: 23 September 2021
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Abstract

A medicinal plant is any plant which, in one or more of its organs, contains substances that can be used for therapeutic purposes. In developing countries all over the world, large numbers of people die daily of preventable or curable diseases because of the lack of even simple health care. So the study was interested entitled “In vitro antibacterial activities of methanol and aqueous extracts of leaves of Carica papaya and Moringa oleifera against selected human pathogenic bacteria”. Moringa oleifera and Carica papaya is medicinal plants which have medicinal values for the treatment of various infectious illness were interested for investigation of their antibacterial activities against E. coli and H. pylore. Two solvent types (methanol and distilled water) were used for crude extraction. The vulnerability of the pathogen to the antibacterial substances was determined using the disc diffusion method. Minimum Inhibitory Concentration was determined by the broth dilution method. The results of the antibacterial activities revealed that both methanol and aqueous leaf extracts had inhibitory activities against the selected gram-positive and gram-negative test pathogens. Methanol extract of Carica papaya had the highest antibacterial activity (13.3 mm) against H. pylore, while Moringa oleifera indica exhibited the least zone of inhibition (8.2 mm) at a concentration of 150 mg/mL. The Antibacterial activities of heat treated crude extracts against the test pathogens were also determined at varying temperature (45-55°C) for a period of 30 and 60 minutes. The results revealed that at higher temperature and exposure time, there was a decrease in the zone of inhibitions. The Minimum Inhibitory Concentrations of the methanol extracts ranged from 1.25 mg/ml - 5 mg/mL; whereas, for aqueous extracts ranged from 2.5 mg/mL -10 mg/mL. In general, this study provides base line information for further work on the search for specific active compounds from the selected plant leaf extracts against human pathogenic bacteria.

Published in American Journal of Bioscience and Bioengineering (Volume 9, Issue 5)
DOI 10.11648/j.bio.20210905.12
Page(s) 136-142
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Antibacterial Activity, Carica papaya, E. coli, Disc Diffusion, Heat Treatment, H. pylore, Moringa oleifera

References
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[2] Ahmad, I., Mehmood, Z. and Mohammad, F., 1998. Screening of some Indian medicinal plants for their antimicrobial properties. Journal of Ethnopharmacology, 62 (2): 183-193.
[3] Alagesaboopathi, C. 2011. Antimicrobial potential and phytochemical screening of Andrographis affinis Nees an endemic medicinal plant from India. International journal of pharmacy and Pharmaceutical Sciences, 3 (Suppl 2): 157-159.
[4] Bauer, A. W., Kirby, W. M., Sherris, J. C. and Turck, M. 1966. Antibiotic susceptibility testing by a standardized single disk method. American journal of clinical pathology, 45 (4): 493.
[5] De, N. B. and Ifeoma, E. 2002. Antimicrobial effects of components of the bark extract of neem (Azadirachta indica A. Juss). Technology and Development, 8: 23-28.
[6] Egharevba, H. O. and Kunle, F. O. 2010. Preliminary phytochemical and proximate analysis of the leaves of Piliostigmathonningii (Schumach.) Milne-Redhead. Ethnobotanical leaflets, (5): 2.
[7] Esimone, C. O., Attama, A. A., Mundi, K. S., Ibekwe, N. N. and Chah, K. F. 2012. Antimicrobial activity of Psidium guajava Linn. stem extracts against methicillin-resistant Staphylococcus aureus. African journal of biotechnology, 11 (89): 15556-15559.
[8] Farooq, F., Rai, M., Tiwari, A., Khan, A. A. and Farooq, S. 2012. Medicinal properties of Moringa oleifera: An overview of promising healer. Journal of Medicinal Plants Research, 6 (27): 4368-4374.
[9] Jayaraman, S., Manoharan, M. S. and Illanchezian, S., 2008. In-vitro antimicrobial and antitumor activities of Stevia rebaudiana (Asteraceae) leaf extracts. Tropical Journal of Pharmaceutical Research, 7 (4): 1143-1149.
[10] Nair, R., KALARIYA, T. and Chanda, S., 2005. Antibacterial activity of some selected Indian medicinal flora. Turkish Journal of biology, 29 (1): 41-47.
[11] National Committee for Clinical Laboratory Standard (NCCLS). 1990. Methods for antimicrobial Susceptibility testing. Manual of Clinical Microbiology: 1105-1125. American Society for Microbiology Washington DC, 5th edition.
[12] National Committee for Clinical Laboratory Standards (United States), 2003. Performance standards for antimicrobial disk susceptibility tests. National Committee for Clinical Laboratory Standards.
[13] Rao, P. K., Rao, D. B., Ravi, C. K., Nadh, M. R., Madhavi, Y. and Rao, T. R. 2011. In vitro antibacterial activity of Moringa oleifera against dental plaque bacteria. Journal of Pharmacy Research, 4 (3): 695-697.
[14] Shah, J. S., Shah, M. B., Goswami, S. S. and Santani, D. D. 2006. Mechanism of action of antiulcer activity of bark extracts of Manilkara hexandra against experimentally induced gastric ulcers in rats. Pharmacognosy Magazine, 5 (2): 41-45.
[15] Simlai, A. and Roy, A. 2012. Analysis of and correlation between phytochemical and antimicrobial constituents of Ceriopsdecandra, a medicinal mangrove plant, from Indian Sundarbanestuary. Journal of Medicinal Plants Research, 6 (32): 4755-4765.
[16] Taylor, J. L. S., Rabe, T., McGaw, L. J., Jäger, A. K. and Van Staden, J., 2001. Towards the scientific validation of traditional medicinal plants. Plant growth regulation, 34 (1): 23-37.
[17] Thilza, I. B., Sanni, S., Zakari, A. I., Sanni, F. S., Muhammed, T. and Musa, B. J. 2010. In vitro antimicrobial activity of water extract of Moringa oleifera leaf stalk on bacteria normally implicated in eye diseases. Academia arena, 2 (6): 80-82.
[18] Wendakoon C., Peter Calderon, and Daniel Gagnon. 2012. Evaluation of Selected Medicinal Plants Extracted in Different Ethanol Concentrations for Antibacterial Activity against Human Pathogens. Journal of Medicinally Active Plants, 1 (2): 60: 68.
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[20] Wright, C. W., 2005. Plant derived antimalarial agents: new leads and challenges. Phytochemistry Reviews, 4 (1): 55-61.
[21] Yang, S. S., Cragg, G. M., Newman, D. J. and Bader, J. P. 2001. Natural product-based anti-HIV drug discovery and development facilitated by the NCI developmental therapeutics program. Journal of natural products, 64 (2): 265-277.
[22] Zaidan, M. R., Noor Rain, A., Badrul, A. R., Adlin, A., Norazah, A. and Zakiah, I. 2005. In vitro screening of five local medicinal plants for antibacterial activity using disc diffusion method. Tropical Biomedicine, 22 (2): 165-170.
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    Temam Gemeda Genemo. (2021). In Vitro Antibacterial Activities of Methanol and Aqueous Extracts of Leaves of Carica papaya and Moringa oleifera Against Selected Human Pathogenic Bacteria. American Journal of Bioscience and Bioengineering, 9(5), 136-142. https://doi.org/10.11648/j.bio.20210905.12

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    ACS Style

    Temam Gemeda Genemo. In Vitro Antibacterial Activities of Methanol and Aqueous Extracts of Leaves of Carica papaya and Moringa oleifera Against Selected Human Pathogenic Bacteria. Am. J. BioSci. Bioeng. 2021, 9(5), 136-142. doi: 10.11648/j.bio.20210905.12

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    AMA Style

    Temam Gemeda Genemo. In Vitro Antibacterial Activities of Methanol and Aqueous Extracts of Leaves of Carica papaya and Moringa oleifera Against Selected Human Pathogenic Bacteria. Am J BioSci Bioeng. 2021;9(5):136-142. doi: 10.11648/j.bio.20210905.12

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  • @article{10.11648/j.bio.20210905.12,
      author = {Temam Gemeda Genemo},
      title = {In Vitro Antibacterial Activities of Methanol and Aqueous Extracts of Leaves of Carica papaya and Moringa oleifera Against Selected Human Pathogenic Bacteria},
      journal = {American Journal of Bioscience and Bioengineering},
      volume = {9},
      number = {5},
      pages = {136-142},
      doi = {10.11648/j.bio.20210905.12},
      url = {https://doi.org/10.11648/j.bio.20210905.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.bio.20210905.12},
      abstract = {A medicinal plant is any plant which, in one or more of its organs, contains substances that can be used for therapeutic purposes. In developing countries all over the world, large numbers of people die daily of preventable or curable diseases because of the lack of even simple health care. So the study was interested entitled “In vitro antibacterial activities of methanol and aqueous extracts of leaves of Carica papaya and Moringa oleifera against selected human pathogenic bacteria”. Moringa oleifera and Carica papaya is medicinal plants which have medicinal values for the treatment of various infectious illness were interested for investigation of their antibacterial activities against E. coli and H. pylore. Two solvent types (methanol and distilled water) were used for crude extraction. The vulnerability of the pathogen to the antibacterial substances was determined using the disc diffusion method. Minimum Inhibitory Concentration was determined by the broth dilution method. The results of the antibacterial activities revealed that both methanol and aqueous leaf extracts had inhibitory activities against the selected gram-positive and gram-negative test pathogens. Methanol extract of Carica papaya had the highest antibacterial activity (13.3 mm) against H. pylore, while Moringa oleifera indica exhibited the least zone of inhibition (8.2 mm) at a concentration of 150 mg/mL. The Antibacterial activities of heat treated crude extracts against the test pathogens were also determined at varying temperature (45-55°C) for a period of 30 and 60 minutes. The results revealed that at higher temperature and exposure time, there was a decrease in the zone of inhibitions. The Minimum Inhibitory Concentrations of the methanol extracts ranged from 1.25 mg/ml - 5 mg/mL; whereas, for aqueous extracts ranged from 2.5 mg/mL -10 mg/mL. In general, this study provides base line information for further work on the search for specific active compounds from the selected plant leaf extracts against human pathogenic bacteria.},
     year = {2021}
    }
    

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  • TY  - JOUR
    T1  - In Vitro Antibacterial Activities of Methanol and Aqueous Extracts of Leaves of Carica papaya and Moringa oleifera Against Selected Human Pathogenic Bacteria
    AU  - Temam Gemeda Genemo
    Y1  - 2021/09/23
    PY  - 2021
    N1  - https://doi.org/10.11648/j.bio.20210905.12
    DO  - 10.11648/j.bio.20210905.12
    T2  - American Journal of Bioscience and Bioengineering
    JF  - American Journal of Bioscience and Bioengineering
    JO  - American Journal of Bioscience and Bioengineering
    SP  - 136
    EP  - 142
    PB  - Science Publishing Group
    SN  - 2328-5893
    UR  - https://doi.org/10.11648/j.bio.20210905.12
    AB  - A medicinal plant is any plant which, in one or more of its organs, contains substances that can be used for therapeutic purposes. In developing countries all over the world, large numbers of people die daily of preventable or curable diseases because of the lack of even simple health care. So the study was interested entitled “In vitro antibacterial activities of methanol and aqueous extracts of leaves of Carica papaya and Moringa oleifera against selected human pathogenic bacteria”. Moringa oleifera and Carica papaya is medicinal plants which have medicinal values for the treatment of various infectious illness were interested for investigation of their antibacterial activities against E. coli and H. pylore. Two solvent types (methanol and distilled water) were used for crude extraction. The vulnerability of the pathogen to the antibacterial substances was determined using the disc diffusion method. Minimum Inhibitory Concentration was determined by the broth dilution method. The results of the antibacterial activities revealed that both methanol and aqueous leaf extracts had inhibitory activities against the selected gram-positive and gram-negative test pathogens. Methanol extract of Carica papaya had the highest antibacterial activity (13.3 mm) against H. pylore, while Moringa oleifera indica exhibited the least zone of inhibition (8.2 mm) at a concentration of 150 mg/mL. The Antibacterial activities of heat treated crude extracts against the test pathogens were also determined at varying temperature (45-55°C) for a period of 30 and 60 minutes. The results revealed that at higher temperature and exposure time, there was a decrease in the zone of inhibitions. The Minimum Inhibitory Concentrations of the methanol extracts ranged from 1.25 mg/ml - 5 mg/mL; whereas, for aqueous extracts ranged from 2.5 mg/mL -10 mg/mL. In general, this study provides base line information for further work on the search for specific active compounds from the selected plant leaf extracts against human pathogenic bacteria.
    VL  - 9
    IS  - 5
    ER  - 

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Author Information
  • Department of Biotechnology, College of Natural and Computational Sciences, Wachemo University, Hossana, Ethiopia

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