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Cited by 45Nanocomposite Films for Food PackagingSeaweed-derived Bioactive CompoundsPolymer Nanocomposite Synthesis and Irradiation

Functional Properties of Antimicrobial Neem Leaves Extract Based Macroalgae Biofilms for Potential Use as Active Dry Packaging Applications

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Oyekanmi, A. A., Kumar, U. Seeta Uthaya, H. P. S., Abdul Khalil, Olaiya, N. G., Amirul, A. A., Rahman, A. A., Nuryawan, Arif, Abdullah, C. K. +1 more·2021·Polymers
DOI 10.3390/polym13101664PMC PMC8161299
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Abstract

Antimicrobial irradiated seaweed–neem biocomposite films were synthesized in this study. The storage functional properties of the films were investigated. Characterization of the prepared films was conducted using SEM, FT-IR, contact angle, and antimicrobial test. The macroscopic and microscopic including the analysis of the functional group and the gas chromatography-mass spectrometry test revealed the main active constituents present in the neem extract, which was used an essential component of the fabricated films. Neem leaves’ extracts with 5% w/w concentration were incorporated into the matrix of seaweed biopolymer and the seaweed–neem bio-composite film were irradiated with different dosages of gamma radiation (0.5, 1, 1.5, and 2 kGy). The tensile, thermal, and the antimicrobial properties of the films were studied. The results revealed that the irradiated films exhibited improved functional properties compared to the control film at 1.5 kGy radiation dosage. The tensile strength, tensile modulus, and toughness exhibited by the films increased, while the elongation of the irradiated bio-composite film decreased compared to the control film. The morphology of the irradiated films demonstrated a smoother surface compared to the control and provided surface intermolecular interaction of the neem–seaweed matrix. The film indicated an optimum storage stability under ambient conditions and demonstrated no significant changes in the visual appearance. However, an increase in the moisture content was exhibited by the film, and the hydrophobic properties was retained until nine months of the storage period. The study of the films antimicrobial activities against Staphylococcus aureus (SA), and Bacillus subtilis (BS) indicated improved resistance to bacterial activities after the incorporation of neem leaves extract and gamma irradiation. The fabricated irradiated seaweed–neem bio-composite film could be used as an excellent sustainable packaging material due to its effective storage stability.

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Authors
Oyekanmi, A. A., Kumar, U. S. U., H. P. S., A. K., Olaiya, N. G., Amirul, A. A., Rahman, A. A., Nuryawan, A., Abdullah, C. K., & Rizal, S.
Affiliations
  • Universiti Sains Malaysia (MY)
  • School of Industrial Technology, Universiti Sains Malaysia, Penang 11800, Malaysia
  • Federal University of Technology (NG)
  • School of Biological Sciences, Universiti Sains Malaysia, Penang 11800, Malaysia
  • Universitas Sumatera Utara (ID)
  • Universitas Syiah Kuala (ID)
Corresponding author
Kumar, U. Seeta Uthaya
ORCID
Venue
Polymers
Publisher
MDPI AG
Published
2021-05-20
Volume
13
Issue
10
Pages
1664
ISSN
2073-4360 (ISSN-L)
DOI
10.3390/polym13101664
PMC
PMC8161299
OpenAlex
W3162469186
Cited by
45
References
1
Citations by year
2026: 5 · 2025: 13 · 2024: 10 · 2023: 11 · 2022: 2 · 2021: 4
FWCI
1.76
Type
journal article
Language
en
Open access
Licence
Locations
  • Polymers (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Universiti Sains Malaysia, Short Term Research Grant (304/ JPNP/ 6315354)
Topics
  • Physical Sciences › Materials Science › Biomaterials › Nanocomposite Films for Food Packaging
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Seaweed-derived Bioactive Compounds
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer Nanocomposite Synthesis and Irradiation
Keywords
neem leaf extract, biocomposite films, gamma irradiation, antimicrobial packaging, active packaging, Staphylococcus aureus, Bacillus subtilis, tensile properties, storage stability, hydrophobicity, sustainable packaging

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