Biosynthesis of zinc doped Aloe Vera for green nanoparticles

Nagaraj, G.; Brundha, D.; Kowsalya, V.; Chandraleka, C.; Sangavi, S.; Jayalakshmi, R.; Arulpriya, M.; Sathya, N.; Prasath, M.; Tamilarasu, S.

doi:10.1016/j.matpr.2020.05.318

Cited by 10 publications

(12 citation statements)

References 23 publications

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“…The weak signals at and around 1919 cm −1 are related to symmetric C-H-stretching vibrations of chains due to the alkyl polymer chain in PVP and are attributed to the polysaccharide acemannan [ 67 , 87 ]. The hydroxyl groups on methylene moieties appear at 2837 and 2843 for AV-PVP-I 2 and AV-PVP-I 2 -Na, respectively [ 88 ]. The vibrational bands for the CH 2 -deformation on the alkyl chain of PVP are available at 2359 and 2334 in both samples ( Figure 5 ) [ 67 , 70 ].…”

Section: Discussionmentioning

confidence: 99%

“…The band at 2146 cm −1 belongs to the C=O combination vibrations in PVP [ 70 ]. The asymmetric COO-stretching vibrations originating from AV components and PVP are present at 1650 and 1648 cm −1 for AV-PVP-I 2 and AV-PVP-I 2 -Na, respectively ( Figure 5 ) [ 67 , 69 , 70 , 81 , 87 , 88 ]. The related AV components include acemannan and aloin ( Figure 5 ) [ 50 , 87 , 89 ].…”

Section: Discussionmentioning

confidence: 99%

“…The bands around 1472 cm −1 in both samples are related to C-H bending of CH 2 -groups in PVP [ 75 ]. Symmetric COO-stretching of the carboxylate groups corresponding to bioactive components in AV appear at 1403 cm −1 for AV-PVP-I 2 and at 1406 for AV-PVP-I 2 -Na ( Figure 5 ) [ 64 , 81 , 88 ]. The weak signal around 1395 cm −1 denotes the presence of aloin [ 50 ].…”

Section: Discussionmentioning

confidence: 99%

“…The signals around 904, 913, 933, 945 originate from C-C and C-O vibrational stretching in PVP according to previous reports [ 67 , 70 ]. C-H out of plane deformation vibrations due to PVP, mannose and pyranoside ring are available from 812-860 cm −1 ( Figure 5 ) [ 67 , 81 , 82 , 88 , 90 ]. Weak absorption bands around 661 cm −1 indicate the presence of C-H bending in polymerized carbohydrates and phenolics [ 53 ].…”

Section: Discussionmentioning

confidence: 99%

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Facile Synthesis of Antimicrobial Aloe Vera-“Smart” Triiodide-PVP Biomaterials

2020

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Antibiotic resistance is an eminent threat for the survival of mankind. Nosocomial infections caused by multidrug resistant microorganisms are a reason for morbidity and mortality worldwide. Plant-based antimicrobial agents are based on synergistic mechanisms which prevent resistance and have been used for centuries against ailments. We suggest the use of cost-effective, eco-friendly Aloe Vera Barbadensis Miller (AV)-iodine biomaterials as a new generation of antimicrobial agents. In a facile, one-pot synthesis, we encapsulated fresh AV gel with polyvinylpyrrolidone (PVP) as a stabilizing agent and incorporated iodine moieties in the form of iodine (I2) and sodium iodide (NaI) into the polymer matrix. Ultraviolet-visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR), x-ray diffraction (XRD), microstructural analysis by scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) verified the composition of AV-PVP-I2, AV-PVP-I2-NaI. AV, AV-PVP, AV-PVP-I2, AV-PVP-I2-NaI, and AV-PVP-NaI were tested in-vitro by disc diffusion assay and dip-coated on polyglycolic acid (PGA) sutures against ten microbial reference strains. All the tested pathogens were more susceptible towards AV-PVP-I2 due to the inclusion of “smart” triiodides with halogen bonding in vitro and on dip-coated sutures. The biocomplexes AV-PVP-I2, AV-PVP-I2-NaI showed remarkable antimicrobial properties. “Smart” biohybrids with triiodide inclusions have excellent antifungal and promising antimicrobial activities, with potential use against surgical site infections (SSI) and as disinfecting agents.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Facile Synthesis of Antimicrobial Aloe Vera-“Smart” Triiodide-PVP Biomaterials

2020

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“…The strong absorption band at 612 cm À1 is due to the Zn-doped C. roseus NPs. [38][39][40][41] The functional groups present in the plant extract contribute to the mechanism of bonding within the Zn NPs. Any shift or change in the location or intensity of the bands in the spectra of the NPs can be correlated with the interaction of the oxygen agents of the plant extract with the Zn NPs.…”

Section: Resultsmentioning

confidence: 99%

Green synthesis of Zn-doped Catharanthus Roseus nanoparticles for enhanced anti-diabetic activity

et al. 2020

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Effects of the surface of solar-light photocatalytic activity of Ag-doped TiO2 nanohybrid material prepared with a novel approach

et al. 2021

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Surface modi cation with a nanomaterial has been con rmed to be an effective strategy to enhance the visible-light photodegradation e ciency of titanium dioxide nanoparticles (TiO 2 -NPs). In this regard, we used silver as an additive into TiO2-NPs to improve their photodegradation activity under visible light irradiation. Herein, a novel and eco-friendly process was developed to prepare the Ag-doped TiO 2 nanohybrid and named as photon-induced method (PIM). The XRD technique showed that the prepared Ag-doped TiO 2 has mixed phases of anatase and rutile. However, the rutile-only phase was detected for the pure TiO 2 -NPs at 700°C of calcination. Ultraviolet-visible (UV-vis) absorption spectra revealed a reduction in the bandgap energy of TiO 2 after Ag doping. Besides, the addition of Ag resulted in a signi cant improvement of TiO 2 morphology. Methlyene blue (MB) dye was chosen to be an organic target to investigate the photocatalyst activity of the TiO 2 -NPs. In this regard, the degradation rate of MB was found to be 100% for the Ag-doped TiO 2 , which is higher than that of pure rutile TiO 2 . The incorporation of Ag additive plays a signi cant role in the improvement of TiO 2 stability and photodegradation performance due to the surface plasmon resonance phenomenon.

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Biosynthesis of zinc doped Aloe Vera for green nanoparticles

Cited by 10 publications

References 23 publications

Facile Synthesis of Antimicrobial Aloe Vera-“Smart” Triiodide-PVP Biomaterials

Facile Synthesis of Antimicrobial Aloe Vera-“Smart” Triiodide-PVP Biomaterials

Green synthesis of Zn-doped Catharanthus Roseus nanoparticles for enhanced anti-diabetic activity

Effects of the surface of solar-light photocatalytic activity of Ag-doped TiO2 nanohybrid material prepared with a novel approach

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