Amperometric determination of Myo-inositol using a glassy carbon electrode modified with nanostructured copper sulfide

Rajaram, Rajendran; Kiruba, M.; Suresh, C.; Mathiyarasu, J.; Shanmugam, Kumaran; Ramanathan, Kumaresan

doi:10.1007/s00604-020-04300-z

Cited by 21 publications

(9 citation statements)

References 34 publications

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“…Upon transduction, the signal is converted into an electronic signal, therefore becoming usable for further processing (Grieshaber et al., 2008). Biosensors have been proved efficient in the detection of wine‐related vitamins in several matrixes, including biotin (Kergaravat et al., 2012; Martín‐Yerga et al., 2017; Polese et al., 2014), folic acid (Arvand & Dehsaraei, 2013; Boström Caselunghe & Lindeberg, 2000; Jamali et al., 2014), inositol (Rajaram et al., 2020; Yang et al., 2006), pyridoxine (Mostafa, 2003; Vaze & Srivastava, 2008), riboflavin (Caelen et al., 2004; Khaloo et al., 2016), and thiamine (Akyilmaz et al., 2006; Halma et al., 2017), as well as the determination of ascorbic contents in several samples, including wine, relying on the use of platinum and carbon paste electrodes (Pisoschi et al., 2011). Methods relying on the use of biosensors capable of the simultaneous detection of B‐ and C‐group vitamins have been established, although limited in number (Baghizadeh et al., 2015; Baś et al., 2011; Gao et al., 2008; Nie et al., 2013, 2014; Revin & John, 2012).…”

Section: Vitamin Analysis In Grape Musts and Winesmentioning

confidence: 99%

Vitamins in wine: Which, what for, and how much?

Evers

Roullier-Gall

Morge

et al. 2021

Comp Rev Food Sci Food Safe

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Vitamins are essential compounds to yeasts, and notably in winemaking contexts. Vitamins are involved in numerous yeast metabolic pathways, including those of amino acids, fatty acids, and alcohols, which suggests their notable implication in fermentation courses, as well as in the development of aromatic compounds in wines. Although they are major components in the course of those microbial processes, their significance and impact have not been extensively studied in the context of winemaking and wine products, as most of the studies focusing on the subject in the past decades have relied on relatively insensitive and imprecise analytical methods. Therefore, this review provides an extensive overview of the current knowledge regarding the impacts of vitamins on grape must fermentations, wine‐related yeast metabolisms, and requirements, as well as on the profile of wine sensory characteristics. We also highlight the methodologies and techniques developed over time to perform vitamin analysis in wines, and assess the importance of precisely defining the role played by vitamins in winemaking processes, to ensure finer control of the fermentation courses and product characteristics in a highly complex matrix.

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Section: Vitamin Analysis In Grape Musts and Winesmentioning

confidence: 99%

Vitamins in wine: Which, what for, and how much?

Evers

Roullier-Gall

Morge

et al. 2021

Comp Rev Food Sci Food Safe

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“…The Cu-MoTCA and CuTCA were further characterized by Raman spectral studies (Figures d and S3). The peaks observed at 258 and 470 cm –1 for CuTCA cluster correspond to Cu–S vibration and S–S stretching vibration, respectively, , and the broad peak from 950 to 1100 cm –1 corresponds to the aromatic ring structure. The Cu–S and Mo–S vibrations are observed at 200 and 315 cm –1 in the Cu-MoTCA cluster.…”

Section: Resultsmentioning

confidence: 97%

Stable p-Type Molybdenum and Copper Ion-Containing Coordination Polymer Photocathode in Protic Electrolytes

Vishwa

Gopinathan

Kandaiah

2023

ACS Appl. Energy Mater.

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Photoelectro-redox catalysts for multiproton-coupled electron transfer are vital for photo-assisted electrochemical energy conversion and electrosynthetic processes. Herein, we describe a facile method for the preparation of the molybdenum and copper ion-containing coordination polymer using a bridging functional triazine ligand. X-ray photoelectron spectroscopy (XPS) analysis reveals the presence of mixed-valent molybdenum and copper ions in the coordination polymer. In contrast to the p-type copper oxide photocathode, this photocathode material displays excellent photoelectrochemical stability in strong protic electrolytes. High photocurrent responses were observed for the molybdenum and copper ions-incorporated metallopolymers and nearly 20 times higher acidic pH than in a neutral electrolyte. The constant-potential photocurrent measurements in protic electrolytes for a longer duration display a stable p-type response of nearly 50–60 μA cm–2. The photoelectrocatalyst exhibits an improved electrochemical oxygen reduction and carbon dioxide reduction.

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“…The other peak at 265 cm –1 corresponds to the A 1g TO mode, which is attributed to Cu–S stretching. Both these characteristic peaks are assigned to the covellite CuS crystal structure comprehending XRD analysis …”

Section: Resultsmentioning

confidence: 99%

“…Both these characteristic peaks are assigned to the covellite CuS crystal structure comprehending XRD analysis. 52 The morphology of the synthesized samples was analyzed with field emission scanning electron microscopy (FESEM) (Figure 4). The surface morphology of SA-CuS@pH7.4 showed a homogeneous distribution of nanoflakes.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

2023

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The use of visible light to propel chemical reactions is an exciting area of study that is crucial in the current socioeconomic environment. However, various photocatalysts have been developed to harness visible light, which consume high energy during synthesis. Thus, synthesizing photocatalysts at gel–liquid interfaces in ambient conditions is of scientific importance. Herein, we report an environmentally benign sodium alginate gel being used as a biopolymer template to synthesize copper sulfide (CuS) nanostructures at the gel–liquid interface. The driving force for the synthesis of CuS nanostructures is varied by changing the pH of the reaction medium (i.e., pH 7.4, 10, and 13) to tailor the morphology of CuS nanostructures. The CuS nanoflakes obtained at pH 7.4 transform into nanocubes when the pH is raised to 10, and the nanostructures deform at the pH of 13. Fourier transform infrared spectroscopy (FTIR) confirms all the characteristic stretching of sodium alginate, whereas the CuS nanostructures are crystallized in a hexagonal crystal system, as revealed by the powder X-ray diffraction analysis. The high-resolution X-ray photoelectron spectroscopy (XPS) spectra show the +2 and −2 oxidation states of copper (Cu) and sulfur (S) ions, respectively. The CuS nanoflakes physisorbed a higher concentration of greenhouse CO2 gas. Owing to a lower band gap of CuS nanoflakes synthesized at a pH of 7.4, compared to other CuS nanostructures prepared at pH 10 and 13, CuS photocatalytically degrades 95% of crystal violet and 98% of methylene blue aqueous dye solutions in 60 and 90 min, respectively, under blue light illumination. Additionally, sodium alginate–copper sulfide (SA-CuS) nanostructures synthesized at a pH of 7.4 demonstrate excellent performance in photoredox reactions to convert ferricyanide to ferrocyanide. The current research opens the door to developing new photocatalytic pathways for a wide range of photochemical reactions involving nanoparticle-impregnated alginate composites prepared on gel interfaces.

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Amperometric determination of Myo-inositol using a glassy carbon electrode modified with nanostructured copper sulfide

Cited by 21 publications

References 34 publications

Vitamins in wine: Which, what for, and how much?

Vitamins in wine: Which, what for, and how much?

Stable p-Type Molybdenum and Copper Ion-Containing Coordination Polymer Photocathode in Protic Electrolytes

Sodium Alginate–CuS Nanostructures Synthesized at the Gel–Liquid Interface: An Efficient Photocatalyst for Redox Reaction and Water Remediation

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