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Cited by 229Seaweed-derived Bioactive CompoundsNanoparticles: synthesis and applicationsEssential Oils and Antimicrobial Activity

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Antioxidant and antimicrobial activities of Spirulina platensis extracts and biogenic selenium nanoparticles against selected pathogenic bacteria and fungi

Open access
Abdel-Moneim, Abdel-Moneim Eid, El-Saadony, Mohamed T., Shehata, Abdelrazeq M., Saad, Ahmed M., Aldhumri, Sami Ali, Ouda, Sahar M, Mesalam, Noura M.·2022·Saudi Journal of Biological Sciences
DOI 10.1016/j.sjbs.2021.09.046PMC PMC8848030
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Abstract

This study investigated the antimicrobial and antioxidant activity of three Spirulina extracts (methanol, acetone, and hexane) and the biological selenium nanoparticles (SeNPs) fabricated by Bacillus subtilis AL43. The results showed that Spirulina extracts exhibited antimicrobial activity against tested pathogens. Besides, Spirulina extracts significantly scavenged ABTS and DPPH radicals in a dose-dependent manner. The methanolic extract had higher total phenolic content, antimicrobial activity, and antioxidant activity than other extracts. The selenium nanoparticles were synthesized by Bacillus subtilis AL43 under aerobic conditions and were characterized as spherical, crystalline with a size of 65.23 nm and a net negative charge of −22.7. We evidenced that SeNPs possess considerable antimicrobial activity against three gram-positive, three gram-negative bacteria, and three strains from both Candida sp. and Aspergillus sp. Moreover, SeNPs were able to scavenge ABTS and DPPH radicals in a dose-dependent manner. An association was found between the total phenolic content of Spirulina and SeNPs and their biological activities. Our results indicate that Spirulina and SeNPs with significant antimicrobial and antioxidant activities seem to be successful candidates for safe and reliable medical applications.

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Crossref · 10.1016/j.sjbs.2021.09.046

Cites

94 of 94 references verified0 citation errors · 0 not checkable

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Figures

Fig. 1 UV–Vis spectra of SeNPs synthesized by B. subtilis AL43.
Fig. 1 UV–Vis spectra of SeNPs synthesized by B. subtilis AL43.CC BY-NC-ND · PubMed Central
Fig. 2 TEM image of biogenic selenium nanoparticles (SeNPs) synthesized by Bacillus subtilis AL43.
Fig. 2 TEM image of biogenic selenium nanoparticles (SeNPs) synthesized by Bacillus subtilis AL43.CC BY-NC-ND · PubMed Central
Fig. 3 Size distribution (A) and zeta potential (B) of SeNPs synthesized by B. subtilis AL43.
Fig. 3 Size distribution (A) and zeta potential (B) of SeNPs synthesized by B. subtilis AL43.CC BY-NC-ND · PubMed Central
Fig. 4 FT-IR spectrum of SeNPs synthesized by B. subtilis AL43.
Fig. 4 FT-IR spectrum of SeNPs synthesized by B. subtilis AL43.CC BY-NC-ND · PubMed Central
Fig. 5 MIC levels of Spirulina extracts (methanol, hexane, and acetone) against (A) tested bacteria, and (B) tested fungi, data are presented as mean ± SE.
Fig. 5 MIC levels of Spirulina extracts (methanol, hexane, and acetone) against (A) tested bacteria, and (B) tested fungi, data are presented as mean ± SE.CC BY-NC-ND · PubMed Central
Fig. 6 MIC levels of biogenic selenium nanoparticles (SeNPs) against (A) tested bacteria, and (B) tested fungi, data are presented as mean ± SE.
Fig. 6 MIC levels of biogenic selenium nanoparticles (SeNPs) against (A) tested bacteria, and (B) tested fungi, data are presented as mean ± SE.CC BY-NC-ND · PubMed Central
Fig. 7 Scavenging activity of (A) Spirulina extracts and (B) biogenic selenium nanoparticles (SeNPs, μg/mL) against ABTS• and DPPH• radicals at room temperature, data are presented as mean ± SE.
Fig. 7 Scavenging activity of (A) Spirulina extracts and (B) biogenic selenium nanoparticles (SeNPs, μg/mL) against ABTS• and DPPH• radicals at room temperature, data are presented as mean ± SE.CC BY-NC-ND · PubMed Central

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  1. DeVos, P., Garrity, G., Jones, D., Krieg, N.R., Ludwig, W., Rainey, F.A., Schleifer, K.-H., Whitman, W.B. 2011. Bergey's manual of systematic bacteriology: Volume 3: The Firmicutes. Springer Science & Business Media.

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Metadata

Authors
Abdel-Moneim, A.-M. E., El-Saadony, M. T., Shehata, A. M., Saad, A. M., Aldhumri, S. A., Ouda, S. M., & Mesalam, N. M.
Affiliations
  • Al-Azhar University (EG)
  • Zagazig University (EG)
  • Taif University (SA)
  • Egyptian Atomic Energy Authority (EG)
ORCID
Venue
Saudi Journal of Biological Sciences
Publisher
Elsevier BV
Published
2022-02
Volume
29
Issue
2
Pages
1197-1209
ISSN
1319-562X (ISSN-L)
DOI
10.1016/j.sjbs.2021.09.046
PMC
PMC8848030
OpenAlex
W3200368356
Cited by
229
References
94
Citations by year
2026: 22 · 2025: 44 · 2024: 52 · 2023: 53 · 2022: 44
FWCI
29.56
Type
journal article
Language
en
Open access
Licence
Locations
  • Saudi Journal of Biological Sciences (publishedVersion, cc-by-nc-nd)
  • PubMed Central (publishedVersion, cc-by-nc-nd)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Taif University (TURSP-2020/315)
Topics
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Physical Sciences › Materials Science › Materials Chemistry › Nanoparticles: synthesis and applications
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Essential Oils and Antimicrobial Activity
Keywords
Spirulina platensis, biogenic selenium nanoparticles, Bacillus subtilis, antimicrobial activity, antioxidant activity, free radical scavenging, total phenolic content, methanol extract, Candida, Aspergillus, pathogenic bacteria, green synthesis

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