Insecticidal, antimicrobial and antioxidant activities of bulb extracts of Allium sativum
Open accessAbstract
OBJECTIVE: To evaluate the insecticidal, antimicrobial and antioxidant activities of bulb extracts of Allium sativum (A. sativum). METHODS: Dried bulbs of A. sativum were extracted with different solvents and evaluated for insecticidal, antimicrobial and antioxidant activities. METHODS: Aqueous and methanol extracts showed highest insecticidal activity (mortality rate of 81% and 64% respectively) against the larvae of Spodoptera litura (S. litura) at a concentration of 1 000 ppm. With regard to antimicrobial activity, aqueous extract exhibited antibacterial activity against gram positive (Bacillus subtilis, Staphylococcus aureu,) and gram negative (Escherichia coli and Klebsiella pneumonia) strains and antifungal activity against Candida albicans. While methanol extract showed antimicrobial activity against all the tested micro organisms except two (Staphylococcus aureus and Candida albicans), the extracts of hexane, chloroform and ethyl acetate did not show any anti microbial activity. Minimum inhibitory concentration of aqueous and methanol extracts against tested bacterial and fungal strains was 100-150 μg/mL. Antioxidant activity of the bulb extracts was evaluated in terms of inhibition of free radicals by 2, 2'-diphenly-1-picrylhydrazyl. Aqueous and methanol extracts exhibited strong antioxidant activity (80%-90% of the standard). CONCLUSIONS: Antioxidant and antimicrobial activity of A. sativum against the tested organisms therefore, provides scientific basis for its utilization in traditional and folk medicine. Also, our results demonstrated the insecticidal efficacy of A. sativum against S. litura, a polyphagous insect.
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Aqueous garlic extract showed antibacterial activity toward Gram-negative (Kl. pneumoniae and E. coli) and Gram-positive (Bacillus subtilis and S. aureus) strains, whereas methanolic garlic extract showed antimicrobial activity against all tested strains except S. aureus.
“Meriga et al. [52] reported that aqueous garlic extract showed antibacterial activity toward Gram-negative (Kl. pneumoniae and E. coli) as well as Gram-positive (e.g., Bacillus subtilis and S. aureus) strains, whereas methanolic garlic extract showed antimicrobial activity against all tested strains except S. aureus.”
From Chemical Constituents and Pharmacological Activities of Garlic (Allium sativum L.): A Review (2020) · cites this paper as [52]
Hexane, ethyl acetate, and chloroform garlic extracts did not show any antibacterial effect.
“However, hexane, ethyl acetate, and chloroform extracts did not show any antibacterial effect.”
From Chemical Constituents and Pharmacological Activities of Garlic (Allium sativum L.): A Review (2020) · cites this paper as [52]
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Chemical Constituents and Pharmacological Activities of Garlic (Allium sativum L.): A Review
El-Saber Batiha, G., Magdy Beshbishy, A., G. Wasef, L., Elewa, Y. H. A., A. Al-Sagan, A., Abd El-Hack, M. E., Taha, A. E., M. Abd-Elhakim, Y., & Prasad Devkota, H. (2020) · Nutrients · doi:10.3390/nu12030872 · Cited by 931 · see citing works
- Authors
- Meriga, B., Mopuri, R., & MuraliKrishna, T.
- Affiliations
- Sri Venkateswara University (IN)
- Corresponding author
- Meriga, Balaji
- Venue
- Asian Pacific Journal of Tropical Medicine
- Publisher
- Medknow
- Published
- 2012-05
- Volume
- 5
- Issue
- 5
- Pages
- 391-395
- ISSN
- 1995-7645 (ISSN-L)
- OpenAlex
- W2083446024
- Cited by
- 129
- References
- 20
- Citations by year
- 2026: 4 · 2025: 9 · 2024: 13 · 2023: 13 · 2022: 18 · 2021: 10 · 2020: 9 · 2019: 7 · 2018: 16 · 2017: 5 · 2016: 6 · 2015: 2 · 2014: 6 · 2013: 8 · 2012: 3
- FWCI
- 6.93
- Type
- journal article
- Language
- en
- Open access
- diamond
- doi.org
- Licence
- Locations
- Asian Pacific Journal of Tropical Medicine (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- Funders
- Department of Science and Technology, Ministry of Science and Technology, India
- CSIR - Institute of Microbial Technology
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Garlic and Onion Studies
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Insect Pest Control Strategies
- Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
- Keywords
- garlic, garlic bulb extract, insecticidal activity, Spodoptera litura, antimicrobial activity, antioxidant activity, antibacterial activity, antifungal activity, Candida albicans, minimum inhibitory concentration, solvent extraction, traditional medicine
- MeSH terms
- Animals, Anti-Bacterial Agents, Antifungal Agents, Antioxidants, Candida albicans, Garlic, Gram-Negative Bacteria, Insecticides, Plant Extracts, Staphylococcus aureus, Spodoptera, Plant Roots
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