Extraction of natural colorant from purple sweet potato and dyeing of fabrics with silver nanoparticles for augmented antibacterial activity against skin pathogens

Velmurugan, Palanivel; Kim, Jae-In; Kim, Kang-Min; Park, Junghee; Lee, Kui-Jae; Chang, Woo-Suk; Park, Yool‐Jin; Cho, Min; Oh, Byung‐Taek

doi:10.1016/j.jphotobiol.2017.07.001

Cited by 36 publications

(19 citation statements)

References 35 publications

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“…The fluorescence intensity of R. solanacearum strain YY06 increased significantly after treated with 10 μg/ml AgNPs for 12 h in comparison with control (without AgNPs) in Figures 8E-H bacteria contain a thick peptidoglycan layer of the cell wall, while the peptidoglycan layer of Gram-negative bacteria wall is thin. Many studies have found that Gram-positive bacteria are more resistant to nanoparticle than Gram-negative bacteria (Velmurugan et al, 2017). The thick peptidoglycan layer of Gram-positive bacteria may act as a protective function when exposing to nanoparticles.…”

Section: Antibacterial Activitiesmentioning

confidence: 99%

Phytofabrication of Silver Nanoparticles Using Three Flower Extracts and Their Antibacterial Activities Against Pathogen Ralstonia solanacearum Strain YY06 of Bacterial Wilt

2020

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Bacterial wilt caused by the phytopathogen Ralstonia solanacearum (R. solanacearum) is a devastating plant disease worldwide. The use of bactericides and antibiotics for controlling bacterial wilt has shown low efficiency and posed environmental risks. This study was to phytofabricate silver nanoparticles (AgNPs) mediated by canna lily flower (Canna indica L.), Cosmos flower (Cosmos bipinnata Cav.), and Lantana flower (Lantana camara L.). The biosynthesized AgNPs were confirmed and characterized by UV-visible spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM), and scanning electron microscopy (SEM). UV-visible spectra showed absorption peak bands at 448, 440, and 428 nm of AgNPs synthesized by C. indica L., C. bipinnata Cav., and L. camara L. flowers, respectively. FTIR spectra confirmed that biofunctional groups of flower extract were involved in the synthesis of AgNPs as capping and stabilizing agents. The spherical AgNPs synthesized by C. indica L., C. bipinnata Cav., and L. camara L. flowers had average diameters of 43.1, 36.1, and 24.5 nm, respectively. The AgNPs (10.0 μg/ml) synthesized by L. camara L. flower had a maximum suppression zone of 18 mm against R. solanacearum strain YY06 compared with AgNPs synthesized by C. indica L. and C. bipinnata Cav. flowers. Bacterial growth, biofilm formation, swimming motility, efflux of nucleic acid, cell death, cell membrane damage, and reactive oxygen species (ROS) generation of R. solanacearum were also negatively affected by AgNPs with high concentration and small size. In summary, the biosynthesized AgNPs can be used as an efficient and environmentally friendly antibacterial agent to reasonably inhibit R. solanacearum.

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Section: Antibacterial Activitiesmentioning

confidence: 99%

Phytofabrication of Silver Nanoparticles Using Three Flower Extracts and Their Antibacterial Activities Against Pathogen Ralstonia solanacearum Strain YY06 of Bacterial Wilt

2020

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“…In many studied approaches to green in-situ AgNP phytosynthesis, the aggressive chemicals were used to prepare plant extracts, e.g. in methanol, ethanol and hexane as solvents, or in the presence of sodium hydroxide or acetic acid, and therefore cannot be considered as fully green synthesis processes (Rehan et al 2020;Yu et al 2020;Logeswari et al 2015;Velmurugan et al 2017;Tania et al 2018). However, there are some studies in which only silver precursors and plant water extracts (i.e.…”

Section: Introductionmentioning

confidence: 99%

Development of antibacterial and UV protective cotton fabrics using plant food waste and alien invasive plant extracts as reducing agents for the in-situ synthesis of silver nanoparticles

2021

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The development of cellulose-based textiles that are functionalised with silver nanoparticles (AgNP), synthesised according to a green approach, and offer protection against ultraviolet (UV) radiation and pathogenic bacteria is very important today. In the present work we demonstrate the environmentally friendly approach to obtain such textile material by AgNP synthesis directly (in-situ) on cotton fabrics, using water extracts of plant food waste (green tea leaves, avocado seed and pomegranate peel) and alien invasive plants (Japanese knotweed rhizome, goldenrod flowers and staghorn sumac fruit) as reducing agents. The extracts were analysed for their total content of phenols and flavonoids and their antioxidant activity. The synthesised AgNP on cotton were round, of different size and amount depending on the reducing agent used. The highest amount of AgNP was found for samples where Japanese knotweed rhizome extract was used as reducing agent and the lowest where extracts of goldenrod flowers and green tea leaves were used. Regardless of the reducing agent used to form AgNP, all cotton samples showed excellent protection against E. coli and S. aureus bacteria and against UV radiation with UV protection factor values above 50. The best results for UV protection even after the twelve repetitive washing cycles were found for the sample functionalized with AgNP synthesised with an extract of the Japanese knotweed rhizome. Due to the presence of AgNP on cotton, the air permeability and thermal conductivity decreased. AgNP had no effect on the change in breaking strength or elongation of fabrics. Graphic abstract

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“…The characteristic color of food is considered as an indicator of freshness, high nutritional value, and flavor, which directly influences the consumer acceptability (Maran, Priya, & Nivetha, 2015). Consequently, there is a growing interest in the use of food dyes obtained from natural sources, since synthetic dyes are being increasingly criticized for having damage to the environment and adverse effects on public health (Velmurugan et al., 2017). Therefore, betalain is highlighted as a natural pigment suitable for coloring foods with low acidity, due to its bioactive properties and its stability between pH 3 and 7 (Celli & Brooks, 2017).…”

Section: Introductionmentioning

confidence: 99%

Ultrasound‐assisted extraction of red beet pigments ( Beta vulgaris L.): Influence of operational parameters and kinetic modeling

Silva¹,

Barros²,

Stevanato³

et al. 2020

J. Food Process. Preserv.

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This study investigated the extraction of betalains from red beet by an ultrasoundassisted process using water as solvent. For this purpose, the effect of time and temperature on ultrasound-assisted extraction (UAE) was evaluated, and together the effect of ultrasound on the process was investigated by comparing the results with orbital shaking extraction (OSE). From the ideal conditions of these parameters, defined in the UAE, the effects of the ultrasound power and the solvent/sample ratio were evaluated and the experimental data obtained in the kinetics with different solvent/sample ratios were correlated with the diffusion coefficient of betalain in water. The results showed that the betalains content present in the extract decreased with temperature and the same occurred with the increase in time at higher temperatures, therefore, 30°C and 30 min were the first conditions established. Under these conditions, the UAE showed better results in obtaining betalain compared to OSE. The increase in ultrasound power improved the extraction and 83 W was sufficient for maximum removal of the compounds. The highest betalains content was obtained using solvent/sample ratio of 75 ml/g and this result is attributed to the highest diffusion coefficients determined in this condition. This extract showed high sugar content, being sucrose the main component (~96%), and also exhibits high antioxidant activity by ABTS, DPPH, and FRAP methods.

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Extraction of natural colorant from purple sweet potato and dyeing of fabrics with silver nanoparticles for augmented antibacterial activity against skin pathogens

Cited by 36 publications

References 35 publications

Phytofabrication of Silver Nanoparticles Using Three Flower Extracts and Their Antibacterial Activities Against Pathogen Ralstonia solanacearum Strain YY06 of Bacterial Wilt

Phytofabrication of Silver Nanoparticles Using Three Flower Extracts and Their Antibacterial Activities Against Pathogen Ralstonia solanacearum Strain YY06 of Bacterial Wilt

Development of antibacterial and UV protective cotton fabrics using plant food waste and alien invasive plant extracts as reducing agents for the in-situ synthesis of silver nanoparticles

Ultrasound‐assisted extraction of red beet pigments ( Beta vulgaris L.): Influence of operational parameters and kinetic modeling

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