Yazar "Imam, Faisal" seçeneğine göre listele

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    Öğe
    Development and functional characterization of melissa essential oil fortified k-carrageenan-based active packaging films
    (Elsevier, 2025) Bhatia, Saurabh; Jawad, Muhammad; Al-Harrasi, Ahmed; Shah, Yasir Abbas; Khan, Talha Shireen; Koca, Esra; Aydemir, Levent Yurdaer; Thekkuden, Dinu Thomas; Imam, Faisal; Al-Harbi, Naif
    The study examined the use of Melissa essential oil (MEO) in kappa carrageenan (KC) based films as a form of active packaging for potential applications in food packaging. Concentrations of MEO used were 0.1 %, 0.5 %, 1 %, and 1.5 % (v/v) to observe changes in the biopolymer characteristics. The films were evaluated for their appearance, color, antioxidant properties, and mechanical characteristics, including tensile strength (TS) and elongation at break (EAB). The findings indicate that the increase in MEO concentration resulted in a considerable decrease in the TS and moisture content of the films. In addition, an increase in EAB and water vapor permeability (WVP) was observed due to the increase in MEO concentration. The results of color analysis show that higher MEO levels made the films opaque with increasing yellowness (b*). Moreover, antioxidant assays revealed that increasing the concentration of MEO significantly improved the films' scavenging activity against free radicals (DPPH) and cationic radicals (ABTS+). Additionally, characterization techniques such as FTIR, XRD, SEM, and thermal assessments (TGA, DSC and DTG) were also performed. Microstructural analysis revealed that a higher MEO concentration led to a few particles in the film structure. Overall, the results indicate a relatively consistent microstructure. The thermal analysis revealed that the increase in MEO concentration leads to a noticeable improvement in the film's thermal stability.
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    Öğe
    Extraction and applications of frankincense oleoresin as functional ingredient in pectin/sodium-alginate composite films for active packaging
    (Elsevier, 2025) Shah, Yasir Abbas; Bhatia, Saurabh; Al-Harrasi, Ahmed; Tarahi, Mohammad; Jawad, Muhammad; Alam, Tanveer; Diblan, Sevgin; Koca, Esra; Aydemir, Levent Yurdaer; Thekkuden, Dinu Thomas; Imam, Faisal; Al-Harbi, Naif
    The composite films fabricated by incorporating frankincense oleoresin (FOR) into pectin and sodium alginate matrices, were underwent several analysis including thickness, mechanical strength, barrier properties, color attributes, morphological structure, surface roughness, chemical composition, crystalline nature, as well as evaluations of antioxidant and antimicrobial properties. The findings of the study indicated an increase in the thickness of the film samples with the addition of FOR however reduction in both tensile strength (from 9.59 to 2.58 MPa) and elongation at break (from 9.85 % to 3.22 %) was observed. The water vapor permeability of the developed films demonstrated an increase from 0.411 to 0.878 (g*mm)/(m2*h*kPa). Atomic Force Microscopy (AFM) imaging results indicated a reduction in the surface roughness of films upon the addition of FOR. Additionally, Fourier Transform Infrared Spectroscopy (FTIR) spectra unveiled chemical interactions between the film-forming polymers and FOR. Furthermore, a significant enhancement in the antioxidant activity was observed in films incorporating FOR, compared to the control group. These FOR-loaded film samples demonstrated antimicrobial effects against Pseudomonas aeruginosa, while no inhibitory zones were observed against Staphylococcus aureus and Candida albicans. In summary, the outcomes of this investigation highlight the promising potential of pectin/sodium alginate composite films containing FOR in packaging applications.