Inclusion of antibacterial agent thymol on β-cyclodextrin-grafted organic cotton

Rukmani, A.; Muthusubramanian, Shanmugam

doi:10.1177/1528083711430244

Cited by 49 publications

(32 citation statements)

References 17 publications

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“…Moreover, this band was more intense in the films including Th compared to their counterparts without Th additive. It is obvious that this R band overlapped the characteristic absorption band of thymol, which appeared in the same region at λ max ~ 278 nm (as seen in the insert) [46,47].…”

Section: Structural and Morphological Analysismentioning

confidence: 85%

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Dairi

Ferfera-Harrar

Ramos

et al. 2019

International Journal of Biological Macromolecules

146

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Nano-biocomposite films based on plasticized cellulose acetate/triethyl citrate (CA/TEC) were prepared with silver nanoparticles (AgNPs)/gelatin-modified montmorillonite nanofiller (AgM) and thymol (Th). AgNPs were biosynthesized in situ the clay using Curcuma longa (C. longa) tuber extract. Full characterization of clay and the formulated films was conducted including morphological, physical and functional properties. From the results, the AgNPs showed spherical shape, face centred cubic crystalline structure, and small average size with narrow distribution.Intercalated structure of films was achieved with some exfoliated platelets and clay aggregates. The glass transition temperature (Tg) of CA increased slightly by the added clay but decreased by Th due to its plasticizing effect. Also, the thermal stability of CA was enhanced only by the added clay.Increasing contents of both additives into films declined the optical clarity but enhanced greatly the UV barrier ability. The clay improved the tensile and oxygen barrier properties, while the Th initiated an antagonist effect. Besides, the radical 2,2-diphenyl-1-picrylhydrazyl (DPPH) tests highlighted antioxidant activities of Th-included films. The films showed antimicrobial activities against bacteria and fungi, where Escherichia Coli (E. Coli) was the most sensitive, with an efficient growth inhibition in vapour-phase method. These materials with antimicrobial/antioxidant properties are promising active packaging. ACCEPTED MANUSCRIPTSilver nanoparticles (AgNPs) are arch inorganic products from the nanotechnology field that have gained boundless interests in packaging applications thanks to their unique properties, such as large surface areas, high thermal stability, and antimicrobial activity. In this context, the incorporation of AgNPs into films packaging as an efficient antimicrobial agent to prevent microbial proliferation on food contact surfaces has emerged [9]. However, there is a need to develop a variety of high-yield and low cost green routes for the synthesis of silver nanoparticles.In this way, the biogenic synthesis of AgNPs mediated by plants has gained widespread interest as safer alternative to common methods, namely chemical, microbial, and physical (UV irradiation, microwave processing, thermal decomposition, electrolysis, ect) processes. This eco-friendly process is beneficial due to its cost effectiveness, non-pathogenic and easily scaled up for large-scale synthesis. Also, there is no need to use high temperature, pressure, energy and toxic chemicals for production. In this context, numerous reports have been published [10-12] concerning the biosynthesis of AgNPs using extracts of different plant parts such as root, stem, bark, leaf, fruit, flowers, and latex as natural resources. Phytocompounds in the plant extracts serve generally as reducing and capping agents in the reaction with silver nitrate (AgNO 3 ), a commonly used precursor in silver nanoparticles synthesis. This dual action is originated from the combined effects of biomolec...

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Section: Structural and Morphological Analysismentioning

confidence: 85%

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Dairi

Ferfera-Harrar

Ramos

et al. 2019

International Journal of Biological Macromolecules

146

View full text Add to dashboard Cite

show abstract

“…The -OH bands overlapped in the 3400 cm -1 region, whereas, the peaks at 3396 cm -1 and in a broad 3100-3470 cm -1 region can be attributed to -OH, stretch [19,20]. In Figure 2, CA-loaded composites shows a band at 3345 cm -1 corresponding to phenolic -OH stretching involving hydrogen bonding, and a peak at 1360 cm -1 corresponds to -OH bending of the phenolic group [21].…”

Section: Iqbal Et Al -Express Polymer Letters Vol9 No9 (2015) 764mentioning

confidence: 99%

Development of novel antibacterial active, HaCaT biocompatible and biodegradable CA-g-P(3HB)-EC biocomposites with caffeic acid as a functional entity

Iqbal¹,

Kyazze²,

Locke³

et al. 2015

Express Polym. Lett.

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Abstract.We have developed novel composites by grafting caffeic acid (CA) onto the P(3HB)-EC based material and laccase from Trametes versicolor was used for grafting purposes. The resulting composites were designated as CA-g-P(3HB)-EC i.e., P(3HB)-EC (control), 5CA-g-P(3HB)-EC, 10CA-g-P(3HB)-EC, 15CA-g-P(3HB)-EC and 20CA-g-P(3HB)-EC. FT-IR (Fourier-transform infrared spectroscopy) was used to examine the functional and elemental groups of the control and laccase-assisted graft composites. Evidently, 15CA-g-P(3HB)-EC composite exhibited resilient antibacterial activity against Gram-positive and Gram-negative bacterial strains. Moreover, a significant level of biocompatibility and biodegradability of the CA-g-P(3HB)-EC composites was also achieved with the human keratinocytes-like HaCaT cells and soil burial evaluation, respectively. In conclusion, the newly developed novel composites with multi characteristics could well represent the new wave of biomaterials for medical applications, and more specifically have promising future in the infection free would dressings, burn and/or skin regeneration field due to their sophisticated characteristics.

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“…Therefore, there is a persistent need to prepare green composites using one or more individual biopolymers to reduce or even eliminate the risk of bacterial infection without impairing the cytotoxicity capabilities. The antibacterial potential of natural phenols, along with their antiseptic characteristics, has already been reported elsewhere (Ultee et al, 2002;Rukmani & Sundrarajan, 2012;Shahidi et al, 2014). Research on several proteins, including collagen, fibroin, keratin, and others are in progress for the development of materials with multifunctional characteristics.…”

Section: Antimicrobial Active Materialsmentioning

confidence: 99%

Emerging Pathogens and Bioactive Materials: In Greening the 21st Century Biomedical Sciences

Iqbal¹,

Dhama²

2018

JEBAS

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Emerging pathogens are a major threat to the biological safety of the world in the 21 st century. Owing to many reasons, the emergence and re-emergence of deadly pathogens have increased and posed a considerable challenge to human and animal health, alike. Various factors including ecological changes along with other specific risk factors related to the type and classification of the pathogen, route of transmission and host range are among the most commonly associated criterion for emerging and reemerging pathogenic environments. Owing to the lack of essential in-depth knowledge, challenges remain in this domain to tackle and combat emerging pathogens. Significant research efforts, exploitations of natural resources with potent bioactivities, and development of scientific innovations along with new degrees of integration are required to tackle this challenging threat. Aiming to resolve these issues, various methodological approaches including in -vitro, in-vivo, ex-vivo, etc. have been exploited, in the past several years. Research is underway around the globe to develop or engineer bioactive materials. Among them, biomaterials-based therapeutic constructs are of supreme interests in the current biomedical sector. The following measures, i.e. (i) principle sources of emerging pathogens, (ii) linking pathogen surveillance of wild and domestic animals, (iii) public health surveillance at the national and international level, and (iv) importantly the coverage of these surveillance issues, etc. should be taken with utmost care. This will ultimately make a significant and essential contribution to the detection and control of emerging and re-emerging pathogens.

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Inclusion of antibacterial agent thymol on β-cyclodextrin-grafted organic cotton

Cited by 49 publications

References 17 publications

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Cellulose acetate/AgNPs-organoclay and/or thymol nano-biocomposite films with combined antimicrobial/antioxidant properties for active food packaging use

Development of novel antibacterial active, HaCaT biocompatible and biodegradable CA-g-P(3HB)-EC biocomposites with caffeic acid as a functional entity

Emerging Pathogens and Bioactive Materials: In Greening the 21st Century Biomedical Sciences

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