Silver nanoparticles synthesized from Bacillus subtilis for detection of deterioration in the post-harvest spoilage of fruit

Omole, Richard Kolade; Torimiro, Nkem; Alayande, Samson Oluwagbemiga; Ajenifuja, Emmanuel

doi:10.1016/j.scp.2018.08.005

Cited by 30 publications

(13 citation statements)

References 25 publications

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“…In agreement with the result of Kalishwaralal et al [32], the crystalline nature of biogenic AgNPs as cubic silver lattice was confirmed by the different angles in 111, 200, 220, 222, 400, and 420 planes. In general, spherical morphology of the biosynthesized AgNPs are in line with those reported previously on the basis of the SEM and TEM images [31]. However, there was a slight difference in particle size and chemical composition of AgNPs between this study and other studies.…”

Section: Discussionsupporting

confidence: 92%

“…Omole et al [31] previously provided evidence that capping protein coat is essential for the stabilization of AgNPs synthesized from B. subtilis. Interestingly, the result of FTIR analysis in the current study revealed the presence of coating proteins, which have been regarded as being essential for the long-term stabilization of biogenic nano-materials.…”

Section: Discussionmentioning

confidence: 99%

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Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

et al. 2020

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Amongst serious biotic factors deteriorating crop yield, the most destructive pathogen of rice is Xanthomonas oryzae pv. oryzae (Xoo), which causes bacterial leaf blight (BLB) disease. This study involved targeted use of biogenic silver nanoparticles (AgNPs) to control BLB in order to cope with the disadvantages of chemical disease control. AgNPs were biologically synthesized from natively isolated Bacillus cereus strain SZT1, which was identified through 16S rRNA gene sequence analysis. Synthesis of AgNPs in bacterial culture supernatant was confirmed through UV-VIS spectroscopy. Fourier transform infrared spectroscopy (FTIR) confirmed that the existence of AgNPs was stabilized with proteins and alcoholic groups. X-ray diffraction (XRD) data revealed the crystalline nature and imaging with scanning electron microscopy (SEM) and transmission electron microscopy (TEM), showing the spherical shape of AgNPs with particle sizes ranging from 18 to 39 nm. The silver presence in AgNPs was further confirmed by energy dispersive spectra. Biogenic AgNPs showed substantial antibacterial activity (24.21 ± 1.01 mm) for Xoo. In a pot experiment, AgNPs were found to be effective weapons for BLB by significantly increasing the plant biomass with a decreased cellular concentration of reactive oxygen species and increased concentration of antioxidant enzyme activity.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

et al. 2020

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“…Recently, research activities have increasingly drifted towards the use of the sensor-based approach for pathogens detection. They have become essential in pathogens and toxins detection, environmental monitoring [26], soil quality monitoring, drug discovery, prosthetic devices [25], timely detection of post-harvest deterioration [27], and food quality monitoring [28]. The wide applications are as a result of its short-time analysis, portability in the design of biological analytical techniques, exemption of sample pre-enrichment approach, its efficiency in real-time measurements and automation [11].…”

Section: Sensor-based Methods For Pathogen Detectionmentioning

confidence: 99%

Functionalized Inorganic Nanoparticles for the Detection of Food and Waterborne Bacterial Pathogens

Daramola¹,

Torimiro²,

Fadare³

et al. 2020

NNR

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Infections acquired from ingesting contaminated food and water poses an adverse effect on public health and safety, thus affecting nations' economy. Technical approaches developed over years have contributed adequately to microbial detection in food and water, yet, unveiling spaces for more improvement on early and rapid detection of pathogens. This review highlights different strategy assessing bio-functionalized inorganic nanoparticles towards the detection of pathogens in food and water samples. Conjugates of several bio-receptors and inorganic nanoparticles showed rapid, real-time, repeatability, and appreciable limit of detection in targeted pathogens. A patent referenced in this study established the biocompatibility of bio-functionalized inorganic nanoparticles mechanism. Unique attributes exhibited by bio-functionalized inorganic nanoparticles showed potential and improvement of the existing bio-sensing pathogen detection methods. Each of the identified strategies described showed a promising pathway accommodating the development of simple, and even the fabrication of low-cost materials for easy detection of bacterial pathogens in food and water products.

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“…through detection of decomposition products). Examples of the latter include AgNP solutions which change color (from red or yellow to transparent) when AgNPs bind to volatile decomposition products of bananas (101) or onions (102).…”

Section: Tablementioning

confidence: 99%

“…Recently, silver nanoclusters (AgNCs) have found use as the fluorescent species in luminescent sensors. A summary of the silver nanomaterial-based optical sensors for food applications is presented in Table 2 ( 42 , 43 , 46 , 101 - 139 ). Selected examples of optical chemical sensors, both colourimetric and fluorescent, are shown in Fig.…”

Section: Optical Sensorsmentioning

confidence: 99%

Recent Advances in (Bio)Chemical Sensors for Food Safety and Quality Based on Silver Nanomaterials

Ivanišević

Milardović

Kassal

2021

Food Technol. Biotechnol. (Online)

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There is a continuing need for tools and devices which can simplify, quicken and reduce the cost of analyses of food safety and quality. Chemical sensors and biosensors are increasingly being developed for this purpose, reaping from the opportunities provided by nanotechnology. Due to the distinct electrical and optical properties of silver nanoparticles (AgNPs), this material plays a vital role in (bio)sensor development. This review is an analysis of chemical sensors and biosensors based on silver nanoparticles with application in food and beverage matrices. It consists of academic research published from 2015 to 2020. The paper is structured to separately explore the designs of two major (bio)sensor classes: electrochemical (including voltammetric and impedimetric sensors) and optical sensors (including colorimetric and luminescent), with special focus on the type of silver nanomaterial and its role in the sensor system. The review indicates that diverse nanosensors have been developed, capable of detecting analytes such as pesticides, mycotoxins, fertilizers, microorganisms, heavy metals, and various additives with exceptional analytical performance. Current trends in the design of such sensors are highlighted and challenges which need to be overcome in the future are discussed.

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Silver nanoparticles synthesized from Bacillus subtilis for detection of deterioration in the post-harvest spoilage of fruit

Cited by 30 publications

References 25 publications

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

Silver Nanoparticles Synthesized by Using Bacillus cereus SZT1 Ameliorated the Damage of Bacterial Leaf Blight Pathogen in Rice

Functionalized Inorganic Nanoparticles for the Detection of Food and Waterborne Bacterial Pathogens

Recent Advances in (Bio)Chemical Sensors for Food Safety and Quality Based on Silver Nanomaterials

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