Metallic and Metal Oxides Nanoparticles for Sensing Food Pathogens—An Overview of Recent Findings and Future Prospects

Abstract

Nowadays, special importance is given to quality control and food safety. Food quality currently creates significant problems for the industry and implicitly for consumers and society. The effects materialize in economic losses, alterations of the quality and organoleptic properties of the commercial products, and, last but not least, they constitute risk factors for the consumer’s health. In this context, the development of analytical systems for the rapid determination of the sanitary quality of food products by detecting possible pathogenic microorganisms (such as Escherichia coli or Salmonella due to the important digestive disorders that they can cause in many consumers) is of major importance. Using efficient and environmentally friendly detection systems for identification of various pathogens that modify food matrices and turn them into food waste faster will also improve agri-food quality throughout the food chain. This paper reviews the use of metal nanoparticles used to obtain bio nanosensors for the purpose mentioned above. Metallic nanoparticles (Au, Ag, etc.) and their oxides can be synthesized by several methods, such as chemical, physical, physico-chemical, and biological, each bringing advantages and disadvantages in their use for developing nanosensors. In the “green chemistry” approach, a particular importance is given to the metal nanoparticles obtained by phytosynthesis. This method can lead to the development of good quality nanoparticles, at the same time being able to use secondary metabolites from vegetal wastes, as such providing a circular economy character. Considering these aspects, the use of phytosynthesized nanoparticles in other biosensing applications is also presented as a glimpse of their potential, which should be further explored.

Nanomaterial-based biosensors for the detection of foodborne bacteria: a review

“…62 Among them, NMPs and their metal oxides, MOFs, are widely used in the detection of hazards. 63–65 AuNPs, PdNPs and PtNPs are widely used in the detection of hazards due to their outstanding catalytic enzyme mimetic activities related to superoxide dismutase, catalase, oxidase and peroxidase. 37,66,67…”

“…This journal is © The Royal Society of Chemistry 2023 metal oxides, MOFs, are widely used in the detection of hazards. [63][64][65] AuNPs, PdNPs and PtNPs are widely used in the detection of hazards due to their outstanding catalytic enzyme mimetic activities related to superoxide dismutase, catalase, oxidase and peroxidase. 37,66,67 As an excellent colorimetric output signal, AuNPs have been used in various biosensors.…”

Preparation and usage of nanomaterials in biomedicine

“…The superior physical properties of nanomaterials such as plasma, catalysis, fluorescence, and so on, all contribute to the manufacturing of high‐performance biosensors (Lee et al, 2019). The sensors combined with nanotechnology have great advantages, such as enabling the sensors to obtain specific optical or electrical signals, increasing the intensity, and ensuring the durability of the detection signal to promote the development of biological detection technology (Ungureanu et al, 2022) (Figure 3a). In food safety testing, biosensors based on nanomaterials provide a rapid, sensitive, and efficient opportunity to detect biological and chemical pollutants in food, to improve safety of food (Lv et al, 2018).…”

“…electrical signals, increasing the intensity, and ensuring the durability of the detection signal to promote the development of biological detection technology(Ungureanu et al, 2022) (Figure3a). In food safety testing, biosensors based on nanomaterials provide a rapid, sensitive, and efficient opportunity to detect biological and chemical pollutants in food, to improve safety of food(Lv et al, 2018) Dester et al (2022).…”

Biosensors in Food and Healthcare Industries: Bio-Coatings Based on Biogenic Nanoparticles and Biopolymers

“…To addres challenges, bio-coatings have emerged as a promising approach for the functiona of biosensors. Bio-coatings refer to a wide range of natural and synthetic materi can be utilised to immobilise and protect the biological component, enha performance, and prevent non-specific interactions with the sample matrix [14] regard, green-synthesised metallic nanoparticles, and biopolymers, in which ou has significant expertise [15][16][17][18][19][20][21][22][23], were explored as ecologically safe alternatives coatings, and the role they adopt in biosensing applications in the health an industries. In healthcare, bio-coatings can be employed to modify the surface of bio for specific binding to disease markers or pathogens.…”