Fluorescence spectroscopy in tandem with chemometric tools applied to milk quality control

Lelis, Carini Aparecida; Galvan, Diego; Tessaro, Letícia; Andrade, Jelmir Craveiro de; Mutz, Yhan S.; Conté-Júnior, Carlos Adam

doi:10.1016/j.jfca.2022.104515

Cited by 12 publications

(5 citation statements)

References 45 publications

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“…Its fluorescent spectrum is well characterized and widely used to assess milk. Just to cite a few examples: it has been observed that tryptophan spectra could be used to distinguish between different levels of heat treatment [ 6 , 7 ], to identify the geographical origin of milk [ 5 , 33 ], to differentiate between homogenized and non-homogenized milk [ 9 ], to check milk authenticity [ 58 ], to investigate protein interactions [ 59 ] and to predict storage time in infant milk formula [ 17 ].…”

Section: Synchronous Front-face Fluorescence Of Milkmentioning

confidence: 99%

“…Its fluorescent spectrum is well characterized and widely used to assess milk. Just to cite a few examples: it has been observed that tryptophan spectra could be used to distinguish between different levels of heat treatment [6,7], to identify the geographical origin of milk [5,33], to differentiate between homogenized and non-homogenized milk [9], to check milk authenticity [58], to investigate protein interactions [59] and to predict storage time in infant milk formula [17]. According to Andersen and Mortensen [20], emissions between 305 and 400 nm are spectroscopic parameters widely used to explain and detect protein structure changes such as: conformational transitions, associations, and denaturation.…”

Section: Synchronous Front-face Fluorescence Of Milkmentioning

confidence: 99%

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Synchronous Front-Face Fluorescence Spectra: A Review of Milk Fluorophores

Freire,

Zamora,

Castillo

2024

Foods

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Milk is subjected to different industrial processes, provoking significant physicochemical modifications that impact milk’s functional properties. As a rapid and in-line method, front-face fluorescence can be used to characterize milk instead of conventional analytical tests. However, when applying fluorescence spectroscopy for any application, it is not always necessary to determine which compound is responsible for each fluorescent response. In complex matrixes such as milk where several variables are interdependent, the unique identification of compounds can be challenging. Thus, few efforts have been made on the chemical characterization of milk’ fluorescent spectrum and the current information is dispersed. This review aims to organize research findings by dividing the milk spectra into areas and concatenating each area with at least one fluorophore. Designations are discussed by providing specific information on the fluorescent properties of each compound. In addition, a summary table of all fluorophores and references cited in this work by area is provided. This review provides a solid foundation for further research and could serve as a central reference.

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Section: Synchronous Front-face Fluorescence Of Milkmentioning

confidence: 99%

“…Its fluorescent spectrum is well characterized and widely used to assess milk. Just to cite a few examples: it has been observed that tryptophan spectra could be used to distinguish between different levels of heat treatment [6,7], to identify the geographical origin of milk [5,33], to differentiate between homogenized and non-homogenized milk [9], to check milk authenticity [58], to investigate protein interactions [59] and to predict storage time in infant milk formula [17]. According to Andersen and Mortensen [20], emissions between 305 and 400 nm are spectroscopic parameters widely used to explain and detect protein structure changes such as: conformational transitions, associations, and denaturation.…”

Section: Synchronous Front-face Fluorescence Of Milkmentioning

confidence: 99%

Synchronous Front-Face Fluorescence Spectra: A Review of Milk Fluorophores

Freire,

Zamora,

Castillo

2024

Foods

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“…The advantages of this technique are that it is not destructive and it requires little or no sample preparation. 23 In this study, we developed a fast and ultrasensitive alternative technique for SARS-CoV-2 detection using the LAMP technique together with uorescence spectroscopy. In this sense, the amplication strategy (RT-LAMP) was associated with a very sensitive detection method, uorescence detection.…”

Section: Introductionmentioning

confidence: 99%

“…The advantages of this technique are that it is not destructive and it requires little or no sample preparation. 23…”

Section: Introductionmentioning

confidence: 99%

Combination of RT-LAMP and fluorescence spectroscopy using chemometric techniques for an ultra-sensitive and rapid alternative for the detection of SARS-CoV-2

et al. 2022

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“…However, some small businesses milk producers utilize various adulterations to increase the shelf life at a low cost, potentially risking the end-users health [3][4][5][6][7] . These adulterations may include simple dilution with water, dilution with lower quality milk, and addition of chemicals for increasing the shelf life such as hypochlorite, formaldehyde, hydrogen peroxide, dichromate, or increasing the final product yield such as melamine, starch, urea, surfactants, and oils [8][9][10] .…”

mentioning

confidence: 99%

A paired emitter–detector diode-based photometer for the determination of sodium hypochlorite adulteration in milk

Bastan

Ahmadi

Madrakian

et al. 2023

Sci Rep

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This paper reports on developing a low cost but efficient paired emitter–detector diode (PEDD)-based photometer. The photometer consists of a white light-emitting diode (LED) as the emitter diode, an RGB LED as the detector diode, and a multimeter for recoding the signal. The developed PEDD-based photometer was utilized for the determination of liquid bleach adulteration in cow milk samples. N,N-Diethyl-p-phenylenediamine sulfate aqueous solution of pH 6 was used as a probe to monitor the presence of residual active chlorine in milk. The results showed that the developed method could be used to determine sodium hypochlorite in the concentration range of 0.5 to 20.0 ppm Cl2 with 0.14 and 0.46 ppm Cl2 limit of detection and limit of quantification, respectively. The intraday and interday precisions of the method at two concentration levels of 5.5 and 13.7 ppm Cl2 were 1.04% and 0.52%, and 1.81% and 1.02%, respectively. The recoveries of 114.2% and 106.9% were obtained for 5.5 and 13.7 ppm Cl2 concentrations levels, respectively. Real sample analyzes results showed that “maybe” liquid bleach adulteration in milk is the case for local distributors of raw milk.

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Fluorescence spectroscopy in tandem with chemometric tools applied to milk quality control

Cited by 12 publications

References 45 publications

Synchronous Front-Face Fluorescence Spectra: A Review of Milk Fluorophores

Synchronous Front-Face Fluorescence Spectra: A Review of Milk Fluorophores

Combination of RT-LAMP and fluorescence spectroscopy using chemometric techniques for an ultra-sensitive and rapid alternative for the detection of SARS-CoV-2

A paired emitter–detector diode-based photometer for the determination of sodium hypochlorite adulteration in milk

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