The structure of water in soft contact lenses: near infrared spectroscopy and Aquaphotomics study

Munćan, Jelena; Rosić, Jovana Šakota; Mileusnić, Ivana; Matovic, Valentina; Matija, Lidija; Tsenkova, R.

doi:10.1255/nir2017.099

Cited by 4 publications

(4 citation statements)

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“…A study concerned with investigation of an excellent wettability of titanium dioxide reveled the importance of water species ratios [6]. More recent studies exploring the state of water in hydrogel materials of soft contact lenses [94,95,96] revealed that the water spectral pattern holds information even about the state of polymer network and protein deposits on the surfaces of worn contact lenses. Other aquaphotomics studies showed how nanomaterials shape the water matrix, as in the case of fullerene-based nanomaterials that act as water structuring elements when present in very low concentrations [73,74,97].…”

Section: Aquaphotomics—innovative Knowledge Leads To Innovative Apmentioning

confidence: 99%

Aquaphotomics—From Innovative Knowledge to Integrative Platform in Science and Technology

Munćan

Tsenkova

2019

Molecules

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Aquaphotomics is a young scientific discipline based on innovative knowledge of water molecular network, which as an intrinsic part of every aqueous system is being shaped by all of its components and the properties of the environment. With a high capacity for hydrogen bonding, water molecules are extremely sensitive to any changes the system undergoes. In highly aqueous systems—especially biological—water is the most abundant molecule. Minute changes in system elements or surroundings affect multitude of water molecules, causing rearrangements of water molecular network. Using light of various frequencies as a probe, the specifics of water structure can be extracted from the water spectrum, indirectly providing information about all the internal and external elements influencing the system. The water spectral pattern hence becomes an integrative descriptor of the system state. Aquaphotomics and the new knowledge of water originated from the field of near infrared spectroscopy. This technique resulted in significant findings about water structure-function relationships in various systems contributing to a better understanding of basic life phenomena. From this foundation, aquaphotomics started integration with other disciplines into systematized science from which a variety of applications ensued. This review will present the basics of this emerging science and its technological potential.

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Section: Aquaphotomics—innovative Knowledge Leads To Innovative Apmentioning

confidence: 99%

Aquaphotomics—From Innovative Knowledge to Integrative Platform in Science and Technology

Munćan

Tsenkova

2019

Molecules

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“…The high variance in both regions could be connected with the increase of hydrogen bonding and strongly bound water. The aquaphotomics studies researching the state of water in hydrogels connected the high absorbance at the region above 1500 nm to the quality of the polymer network of hydrogels and water binding capacity [ 114 , 115 ]. Also, significant bands associated with microorganisms were observed around 1520 nm and 1930 nm, which were linked to the protein content and with C=O bond, while the region from 1640 to 1786 nm to bacterial aromatic/heterocyclic groups, all of which were connected to microbial structures [ 116 , 117 , 118 ].…”

Section: Discussionmentioning

confidence: 99%

Real-Time Monitoring of Yogurt Fermentation Process by Aquaphotomics Near-Infrared Spectroscopy

Munćan

Tei

Tsenkova

2020

Sensors

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Automated quality control could have a substantial economic impact on the dairy industry. At present, monitoring of yogurt production is performed by sampling for microbiological and physicochemical measurements. In this study, Near-Infrared Spectroscopy (NIRS) is proposed for non-invasive automated control of yogurt production and better understanding of lactic acid bacteria (LAB) fermentation. UHT (ultra-high temperature) sterilized milk was inoculated with Bulgarian yogurt and placed into a quartz cuvette (1 mm pathlength) and test-tubes. Yogurt absorbance spectra (830–2500 nm) were acquired every 15 min, and pH, in the respective test-tubes, was measured every 30 min, during 8 h of fermentation. Spectral data showed substantial baseline and slope changes with acidification. These variations corresponded to respective features of the microbiological growth curve showing water structural changes, protein denaturation, and coagulation of milk. Moving Window Principal Component Analysis (MWPCA) was applied in the spectral range of 954–1880 nm to detect absorbance bands where most variations in the loading curves were caused by LAB fermentation. Characteristic wavelength regions related to the observed physical and multiple chemical changes were identified. The results proved that NIRS is a valuable tool for real-time monitoring and better understanding of the yogurt fermentation process.

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“…However, in the previous decade, the application of this method has grown significantly to include structural analysis of water. The aquaphotomics approach to analyzing water and aqueous systems like plasma, serum, urine, and milk spectra provides a unique opportunity to describe the complex state of water using its multidimensional NIR spectra ( Munćan et al., 2019 ).…”

Section: Introductionmentioning

confidence: 99%

A novel diagnostic approach to Paratuberculosis in dairy cattle using near-infrared spectroscopy and aquaphotomics

Behdad,

Pakdel,

Massudi

2024

Front. Cell. Infect. Microbiol.

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IntroductionAs a contagious and chronic disease in the livestock industry, Paratuberculosis is a significant threat to dairy herds’ genetic and economic resources. Due to intensive breeding and high production of dairy cattle, the incidence and prevalence are higher. Developing non-destructive diagnostic methods for the early detection and identification of healthy animals is paramount for breeding programs. Conventional methods are almost entirely destructive, have low accuracy, lack precision, and are time-consuming. Near-infrared spectroscopy (NIRS) and aquaphotomics can detect changes in biofluids and thus have the potential to diagnose disease. This study aimed to investigate the diagnostic ability of NIRS and aquaphotomics for Paratuberculosis in dairy cattle. MethodsBlood plasma from dairy cattle was collected in the NIR range (1,300 nm to 1,600 nm) 60 days before and 100 days to 200 days after calving in two groups, positive and negative, using the same consecutive enzyme-linked immunosorbent assay test results three times as a reference test.ResultsNIRS and aquaphotomics methods invite 100% accuracy, sensitivity, and specificity to detect Paratuberculosis using data mining by unsupervised method, Principal Component Analysis, and supervised methods: Soft Independent Modeling of Class Analogiest, Linear Discriminant Analysis, Quadratic Discriminant Analysis, Partial Least Square–Discriminant Analysis, and Support Vector Machine models.DiscussionThe current study found that monitoring blood plasma with NIR spectra provides an opportunity to analyze antibody levels indirectly via changes in water spectral patterns caused by complex physiological changes, such as the amount of antibodies related to Paratuberculosis by aquagram.

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The structure of water in soft contact lenses: near infrared spectroscopy and Aquaphotomics study

Cited by 4 publications

References 0 publications

Aquaphotomics—From Innovative Knowledge to Integrative Platform in Science and Technology

Aquaphotomics—From Innovative Knowledge to Integrative Platform in Science and Technology

Real-Time Monitoring of Yogurt Fermentation Process by Aquaphotomics Near-Infrared Spectroscopy

A novel diagnostic approach to Paratuberculosis in dairy cattle using near-infrared spectroscopy and aquaphotomics

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