Investigation the inhibitory effects of AgNPs generated by Bifidobacterium spp. on bacteria isolated from ready-to-eat foods

Jafar, Nehan Bahaaldden; FADHIL, Zainab Hussein; Mustafa, E Mohammed; Saadi, Ali M.

doi:10.1590/fst.88721

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…Moreover, their combination with penicillin showed a synergistic effect, surpassing penicillin or silver NPs' antibacterial efficacy. Furthermore, Ali Mohammed SAADI et al used the agar well diffusion method to confirm the antibacterial properties of silver NPs produced by Bifidobacterium against foodborne bacteria [25]. Also, in another study by Aghigh Dolatabadi et al, AgNPs synthesised using B. bifidum were tested against ciprofloxacin-resistant K. pneumonia strains carrying the OqxAB efflux pump [26].…”

Section: Bifidobacterium-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

New insights into the role of nanotechnology in Bifidobacterium biomedical applications

Ghaznavi,

Hashemi,

Abolhosseini

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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The human gastrointestinal tract is colonised by a multifaceted and dynamic population of microorganisms consisting of trillions of microbes called the gut microbiota. Through extensive research using animal models and human studies, the significant contributions of gut microbiota to immune and metabolic balance, protection against pathogens, and even neurobehavioural traits have been established. Members of the genus Bifidobacterium are the first bacteria to colonise the intestinal tract in infants, and now it has been proven that they play a positive role in enhancing the host immunity, nutrient absorption, reducing and treating gastrointestinal infections, as well as improving conditions such as diarrhea, constipation, and eczema. Bacterial nanotechnology is a rapidly growing research area with great potential for improvement and the discovery of innovations in new applications of bacteria such as Bifidobacterium. In this review, we provide an up-to-date summary of the relations of nanotechnology with Bifidobacterium in various fields, including bacterial synthesis of nanoparticles, encapsulation of bacteria, bacterial toxicity of nanomaterial, application in the field of cancer targeting, and also the treatment of other diseases such as Alzheimer’s and IBD.

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Section: Bifidobacterium-mediated Synthesis Of Nanoparticlesmentioning

confidence: 99%

New insights into the role of nanotechnology in Bifidobacterium biomedical applications

Ghaznavi,

Hashemi,

Abolhosseini

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…Fourier-transform Infrared Spectroscopy is important technique which lets to achieve biochemical analysis of biological samples, functional properties, structural information of compound [18]. The plant extract of Hibiscus sabdariffa L. have distinct peaks in this technique representative the presence/absence of functional groups.…”

Section: Fourier-transform Infrared Spectroscopy (Ftir) Analysismentioning

confidence: 99%

Evaluation of Antibacterial Activity of Selenium and Copper Oxide Nanoparticles Synthesized by Hibiscus sabdariffa L. Extract

Abdullah,

Badawi,

Jafar

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The aim of the present study is to synthesize selenium (SeNPs) and copper oxide (CuONPs) nanoparticles utilizing aqueous extract of Hibiscus sabdariffa L. as a reducing agent. The green synthesized Hibiscus sabdariffa L. selenium and copper oxide nanoparticles were identified by color change. The characterization of SeNPs and CuONPs was achieved by Ultraviolet-visible (UV-VIS) spectroscopy, Field Emission Scanning electron microscope (FESEM), Atomic force microscope (AFM), X-Ray diffraction analysis (XRD) and transform infrared spectroscopy (FTIR). These tests are utilized for detecting stability, morphology, size, crystalline nature and functional groups on nanoparticles surface prepared. The outcomes revealed appearance of the prick-red and green color, indicating a specific color of selenium and copper oxide nanoparticles respectively. It also disclosed that UV-VIS spectroscopy indicated band absorbance at 234 and 274 nanometer of intense surface Plasmon resonance, manifesting the formation and stability of prepared SeNPs and CuONPs. The FESEM image displayed mulit-shapes between spherical and vaulted for selenium and copper oxide nanosized. XRD at 2 theta revealed crystalline selenium and copper oxide nanoparticles, with (54.92-57.79) nm average size. FTIR revealed the presence of functional groups of the plant that act as stabilizing and reducing agents. The antibacterial activity of synthesized nanoparticles was studied against five different bacteria causing food spoilage.

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Ganoderma lucidum-Mediated Green Synthesis of Silver Nanoparticles with Antimicrobial Activity

et al. 2023

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“Green chemistry” is a simple and easily reproductible method that provides nanoparticles characterized by better stability and good dispersion in an aqueous solution. Nanoparticles can be synthesized by algae, bacteria, fungi, and plant extracts. Ganoderma lucidum is a commonly used medicinal mushroom with distinctive biological properties, such as antibacterial, antifungal, antioxidant, anti-inflammatory, anticancer, etc. In this study, aqueous mycelial extracts of Ganoderma lucidum were used to reduce AgNO3 to form silver nanoparticles (AgNPs). The biosynthesized nanoparticles were characterized by UV-visible spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) analysis. The maximum UV absorption was obtained at 420 nm, which represents the specific surface plasmon resonance band for biosynthesized silver nanoparticles. SEM images showed particles as predominantly spherical, while FTIR spectroscopic studies illustrated the presence of functional groups that can support the reducing of ion Ag+ to Ag(0). XRD peaks ratified the presence of AgNPs. The antimicrobial effectiveness of synthesized nanoparticles was tested against Gram-positive and Gram-negative bacterial and yeasts strains. The silver nanoparticles were effective against pathogens, inhibiting their proliferation, and thus reducing the risk to the environment and to public health.

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Investigation the inhibitory effects of AgNPs generated by Bifidobacterium spp. on bacteria isolated from ready-to-eat foods

Cited by 3 publications

References 18 publications

New insights into the role of nanotechnology in Bifidobacterium biomedical applications

New insights into the role of nanotechnology in Bifidobacterium biomedical applications

Evaluation of Antibacterial Activity of Selenium and Copper Oxide Nanoparticles Synthesized by Hibiscus sabdariffa L. Extract

Ganoderma lucidum-Mediated Green Synthesis of Silver Nanoparticles with Antimicrobial Activity

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