Porphyrin-based sensor films for monitoring food spoilage

Altmann, Alexander; Eden, Mario R.; Hüttmann, Gereon; Schell, Christian; Rahmanzadeh, Ramtin

doi:10.1016/j.fpsl.2023.101105

Cited by 6 publications

(5 citation statements)

References 32 publications

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“…The sensor comprises of a polyethylene foil with dispersed silica particles that possess the active sensing molecules. The device was tested with fish fillets presented a positive result by indicating the extent of spoilage proving its real‐time application in packed animal foods (Altmann et al., 2023).…”

Section: Nanosensor Application In Smart Packagingmentioning

confidence: 99%

Review on emerging applications of nanobiosensor in food safety

Guruprasath,

Sankarganesh,

Adeyeye

et al. 2024

Journal of Food Science

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Nanosensors have become an indispensable tool in the food sector due to their specificity and sensitivity. The biosensor consists of a transducer coupled with a biorecognition component to transform biological signal into digital signal. Nanobiosensors have been widely used for sensing toxic chemicals such as pesticide residues and pathogenic microbes owing to their accurate sensitivity in an affordable manner, which gives more hope to the food industry on their applications. It employs nanocarriers to bind to impurities and pollutants, as well as food‐borne microorganisms and their resulting toxins, such as mycotoxins. This modern technology ensures food safety in food processing industries. Nowadays, nanoparticle‐immobilized sensors act as spot indicators to improve smart food packing technology. Certain types of nanobiosensors are deployed to monitor food product manufacture till packaging and to check the freshness of the product till spoilage identification. They are mainly using enzyme catalysts, which are highly sensitive to extreme environmental conditions. As a result, there is a greater evaluation requirement in nanosensor technology to adopt any temperature, pH, or other difficult parameters. Its stability, while in contact with food substrates, is another criterion that needs to be regularized. Within this framework, this review delves into the latest developments in nanobiosensors and the obstacles encountered during their use across different food industries.

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Section: Nanosensor Application In Smart Packagingmentioning

confidence: 99%

Review on emerging applications of nanobiosensor in food safety

Guruprasath,

Sankarganesh,

Adeyeye

et al. 2024

Journal of Food Science

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“…The detectable composition differs by the distinct food products and in some case also for different storage conditions. Recently, we described the formulation and early application of an amine-sensing foil that can be used to determine gaseous spoilage indicators in a packaging unit by fluorescence spectroscopy 9,10 . As described previously, the sensor foil consists of a phosphorus porphyrin (PTPP) covalently bound to silica micro particles that are extruded into polyethylene (PE) foils with a thickness of 150 µm 9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…Recently, we described the formulation and early application of an amine-sensing foil that can be used to determine gaseous spoilage indicators in a packaging unit by fluorescence spectroscopy 9,10 . As described previously, the sensor foil consists of a phosphorus porphyrin (PTPP) covalently bound to silica micro particles that are extruded into polyethylene (PE) foils with a thickness of 150 µm 9,10 . We reported reactions with a variety of different volatile amines that could play a role in food spoilage and demonstrated a first application of the foil for cooled cod and salmon filets 9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…As described previously, the sensor foil consists of a phosphorus porphyrin (PTPP) covalently bound to silica micro particles that are extruded into polyethylene (PE) foils with a thickness of 150 µm 9,10 . We reported reactions with a variety of different volatile amines that could play a role in food spoilage and demonstrated a first application of the foil for cooled cod and salmon filets 9,10 . Likewise, we showed that the foil could indicate amines over cheese as a maturity indicator 10 .…”

Section: Introductionmentioning

confidence: 99%

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Assessing food degradation and microbial growth by sensor read-out with fluorescence spectroscopy

Altmann,

Schell,

Rahmanzadeh

2024

Frontiers in Biological Detection: From Nanosensors to Systems XVI

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Both the waste of edible food and the consumption of non-edible food within the best before date are ongoing concerns in food industry. Until now, no methods are applied to access food quality of packed food without opening of packages. We demonstrate the formulation of a sensor foil comprising of a non-toxic porphyrin on an inorganic matrix in polyethylene. The sensor foil is capable of detecting amines in the gas phase over food products, which could act as spoilage indicators during the shelf life of packaged food. The foil was optimized to prevent reactions with other analytes in the gas phase of food by the alteration of the hydrophobic polymer. We performed experiments, using model packing units, to monitor the behavior of the foil and correlated the change in the fluorescence spectra to the total viable count of bacteria on the fish. The readout of the foils was performed with fluorescence spectroscopy to yield highly accurate results in contrast to less accurate the colorimetric determination.

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“…In recent years, porphyrins have been widely used in sensing in solid state [ 9 , 10 ], in solution [ 11 , 12 ], and in theranostics (a field of medicine that combines therapy and diagnostics) due to their unique properties and versatility [ 13 , 14 , 15 ]. In particular, porphyrins are among the best candidates for non-invasive diagnostics (such as imaging) since they can be used as contrast agents in techniques like magnetic resonance imaging (MRI), positron emission tomography (PET) and fluorescence imaging [ 16 , 17 , 18 ].…”

Section: Introductionmentioning

confidence: 99%

Water-Soluble Star Polymer as a Potential Photoactivated Nanotool for Lysozyme Degradation

Mezzina,

Nicosia,

Barone

et al. 2024

Polymers

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The development of nanotools for chemical sensing and macromolecular modifications is a new challenge in the biomedical field, with emphasis on artificial peptidases designed to cleave peptide bonds at specific sites. In this landscape, metal porphyrins are attractive due to their ability to form stable complexes with amino acids and to generate reactive oxygen species when irradiated by light of appropriate wavelengths. The issues of hydrophobic behavior and aggregation in aqueous environments of porphyrins can be solved by using its PEGylated derivatives. This work proposes the design of an artificial photo-protease agent based on a PEGylated mercury porphyrin, able to form a stable complex with l-Tryptophan, an amino acid present also in the lysozyme structure (a well-known protein model). The sensing and photodegradation features of PEGylated mercury porphyrin were exploited to detect and degrade both l-Trp and lysozyme using ROS, generated under green (532 nm) and red (650 nm) light lasers. The obtained system (Star3600_Hg) and its behavior as a photo-protease agent were studied by means of several spectroscopies (UV-Vis, fluorescence and circular dichroism), and MALDI-TOF mass spectrometry, showing the cleavage of lysozyme and the appearance of several short-chain residues. The approach of this study paves the way for potential applications in theranostics and targeted bio-medical therapies.

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Porphyrin-based sensor films for monitoring food spoilage

Cited by 6 publications

References 32 publications

Review on emerging applications of nanobiosensor in food safety

Review on emerging applications of nanobiosensor in food safety

Assessing food degradation and microbial growth by sensor read-out with fluorescence spectroscopy

Water-Soluble Star Polymer as a Potential Photoactivated Nanotool for Lysozyme Degradation

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