Aquaphotomics approach for monitoring different steps of purification process in water treatment systems

Munćan, Jelena; Matovic, Valentina; Nikolic, Strahinja; Askovic, Jelena; Tsenkova, Roumiana

doi:10.1016/j.talanta.2019.120253

Cited by 38 publications

(17 citation statements)

References 24 publications

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“…By measuring absorbance at specific water absorbance bands (called WAMACs in aquaphotomics-water matrix coordinates), insight into the whole molecular structure of water is gained, and the resulting water spectral pattern (WASP) can be used to describe the state of water as a system. The utilization of this region for the discrimination of mineral waters has already been reported and the water spectral pattern as a holistic marker for water quality monitoring has also been proposed [6,11,12,17].…”

Section: Discussionmentioning

confidence: 99%

“…The authors concluded that the water absorbance spectral pattern could indeed serve as a measure of the qualitative change in the water molecular arrangement and a holistic marker for water quality monitoring. This is further used by Muncan et al, 2020 to propose the utilization of the water spectral pattern as an indicator of water quality for water produced by a purification system intended for household use [12].…”

Section: Introductionmentioning

confidence: 99%

“…In this paper, we present the case where the application of the usual aquaphotomics approach, as used by Kovacs et al, 2016 [11], or Muncan et al, 2014Muncan et al, , 2020, did not provide a clear discrimination of water samples due to their high similarity. In order to overcome this problem, we employed a temperature perturbation protocol.…”

Section: Introductionmentioning

confidence: 99%

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Aquaphotomics Reveals Subtle Differences between Natural Mineral, Processed and Aged Water Using Temperature Perturbation Near-Infrared Spectroscopy

et al. 2021

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Current approaches to the quality control of water are unsatisfying due to either a high cost or the inability to capture all of the relevant information. In this study, near-infrared spectroscopy (NIRS) with aquaphotomics as a novel approach was assessed for the discrimination of natural, processed and aged water samples. Temperature perturbation of water samples was employed to probe the aqueous systems and reveal the hidden information. A radar chart named an aquagram was used to visualize and compare the absorbance spectral patterns of waters at different temperatures. For the spectra acquired at a constant temperature of 30 °C, the discrimination analysis of different water samples failed to produce satisfying results. However, under perturbation by increasing the temperature from 35 to 60 °C, the absorbance spectral pattern of different waters displayed in aquagrams revealed different, water-specific dynamics. Moreover, it was found that aged processed water changed with the temperature, whereas the same processed water, when freshly prepared, had hydrogen bonded structures unperturbed by temperature. In summary, the aquaphotomics approach to the NIRS analysis showed that the water absorbance spectral pattern can be used to describe the character and monitor dynamics of each water sample as a complex molecular system, whose behavior under temperature perturbation can reveal even subtle changes, such as aging and the loss of certain qualities during storage.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Aquaphotomics Reveals Subtle Differences between Natural Mineral, Processed and Aged Water Using Temperature Perturbation Near-Infrared Spectroscopy

et al. 2021

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“…The influence of temperature on the structure of Ara h1 was characterized by an aquagram. The characteristic absorption bands of the Ara h1 aqueous solution during temperature change were shown in Table 2 (32)(33)(34)(35)(36)(37)(38)(39). The aquagram with the 12 WAMACS was shown in Figure 8.…”

Section: Ara H1 Aquagram Analysismentioning

confidence: 99%

Research on the Structure of Peanut Allergen Protein Ara h1 Based on Aquaphotomics

et al. 2021

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Peanut allergy is becoming a life-threatening disease that could induce severe allergic reactions in modern society, especially for children. The most promising method applied for deallergization is heating pretreatment. However, the mechanism from the view of spectroscopy has not been illustrated. In this study, near-infrared spectroscopy (NIRS) combined with aquaphotomics was introduced to help us understand the detailed structural changes information during the heating process. First, near-infrared (NIR) spectra of Ara h1 were acquired from 25 to 80°C. Then, aquaphotomics processing tools including principal component analysis (PCA), continuous wavelet transform (CWT), and two-dimensional correlation spectroscopy (2D-COS) were utilized for better understanding the thermodynamic changes, secondary structure, and the hydrogen bond network of Ara h1. The results indicated that about 55°C could be a key temperature, which was the structural change point. During the heating process, the hydrogen bond network was destroyed, free water was increased, and the content of protein secondary structure was changed. Moreover, it could reveal the interaction between the water structure and Ara h1 from the perspective of water molecules, and explain the effect of temperature on the Ara h1 structure and hydrogen-bonding system. Thus, this study described a new way to explore the thermodynamic properties of Ara h1 from the perspective of spectroscopy and laid a theoretical foundation for the application of temperature-desensitized protein products.

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“…This method has already been used for acquiring measurements of a wide variety of factors essential to successful dairy management. These factors include water [8][9][10], urine and feces [11][12][13][14], composting [15], milk [2,3,[16][17][18][19][20], blood [14,21], feed composition [22], rumen degradation [23], estrus detection [13,[24][25][26] and disease diagnosis [14,20,[27][28][29]. One of the many strong points of NIRS is that it allows measurements of many components simultaneously, which-in addition to such other qualities as precision, high accuracy and non-destructivenessmakes it a superlative technology to be used in precision farming to provide feedback control for preventing undesirable changes and optimizing the dairy operations.…”

Section: Introductionmentioning

confidence: 99%

Artificial Intelligence in Dairy Farming: The Near-Infrared Approach

Tsenkova

Munćan

2021

Aquaphotomics for Bio-Diagnostics in Dairy

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Aquaphotomics approach for monitoring different steps of purification process in water treatment systems

Cited by 38 publications

References 24 publications

Aquaphotomics Reveals Subtle Differences between Natural Mineral, Processed and Aged Water Using Temperature Perturbation Near-Infrared Spectroscopy

Aquaphotomics Reveals Subtle Differences between Natural Mineral, Processed and Aged Water Using Temperature Perturbation Near-Infrared Spectroscopy

Research on the Structure of Peanut Allergen Protein Ara h1 Based on Aquaphotomics

Artificial Intelligence in Dairy Farming: The Near-Infrared Approach

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