Easy-to-use and inexpensive sensors for assessing the quality and traceability of cosmetic antioxidants

Othman, Ali; Norton, Lily; Finny, Abraham Samuel; Andreescu, Silvana

doi:10.1016/j.talanta.2019.120473

Cited by 21 publications

(20 citation statements)

References 25 publications

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“…Since the above classical techniques applied in homogeneous solutions are sufficiently elaborated, numerous studies were concerned with the development of antioxidant sensing devices. The sensors reported in the literature to date are based on a color change 22,23 or operate on an electrochemical basis 15,24,25 and often involve nanomaterials [26][27][28] to quantify the antioxidant contents. For instance, immobilization of the Cu(Nc) 2 complex on membranes, 16 electrodes 17 or paper 29 led to the development of sensing elements, which are potential candidates for use in complex devices.…”

Section: Introductionmentioning

confidence: 99%

Nanoclay-based sensor composites for the facile detection of molecular antioxidants

Szerlauth

Szalma

Muráth

et al. 2022

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Section: Introductionmentioning

confidence: 99%

Nanoclay-based sensor composites for the facile detection of molecular antioxidants

Szerlauth

Szalma

Muráth

et al. 2022

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“…Using 3D printing techniques, mechanically stable constructs are fabricated through computer-controlled deposition of materials, layer by layer, until structures with precise macroscopic and microscopic control are created [8]. Increased usage of extrusion-based 3D printing has been seen, which involves the utilization of hydrogels or printable pastes constructed by incorporating viscous materials that can retain their shape after deposition through chemical, photo, or thermal crosslinking methods [9,10]. Nanocellulose can be introduced to these pastes to facilitate the deposition and realization of stable constructs for applications.…”

Section: Introductionmentioning

confidence: 99%

3D-Printable Nanocellulose-Based Functional Materials: Fundamentals and Applications

2021

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Nanomaterials obtained from sustainable and natural sources have seen tremendous growth in recent times due to increasing interest in utilizing readily and widely available resources. Nanocellulose materials extracted from renewable biomasses hold great promise for increasing the sustainability of conventional materials in various applications owing to their biocompatibility, mechanical properties, ease of functionalization, and high abundance. Nanocellulose can be used to reinforce mechanical strength, impart antimicrobial activity, provide lighter, biodegradable, and more robust materials for packaging, and produce photochromic and electrochromic devices. While the fabrication and properties of nanocellulose are generally well established, their implementation in novel products and applications requires surface modification, assembly, and manufacturability to enable rapid tooling and scalable production. Additive manufacturing techniques such as 3D printing can improve functionality and enhance the ability to customize products while reducing fabrication time and wastage of materials. This review article provides an overview of nanocellulose as a sustainable material, covering the different properties, preparation methods, printability and strategies to functionalize nanocellulose into 3D-printed constructs. The applications of 3D-printed nanocellulose composites in food, environmental, and energy devices are outlined, and an overview of challenges and opportunities is provided.

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“…Its uses as an abrasive in semiconductor fabrication, or as a component in catalytic converters for auto machines exhaust systems, as a fuel additive to boost combustion, as an electrolyte for fuel, and as a UV-light absorber [ 21 , 23 , 24 ] are also well-known. Recently, nanoceria has been used as a colorimetric indicator for antioxidants activity due to the color changes induced by the modifications of cerium oxidation states at nanoparticle surface [ 25 , 26 , 27 ]. It was established that CeO 2 nanoparticles have the capacity to initiate their mechanism by the modulation of the oxygen environment [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

Cerium Oxide Nanoparticles and Their Efficient Antibacterial Application In Vitro against Gram-Positive and Gram-Negative Pathogens

et al. 2020

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In this study, the antibacterial activity of cerium oxide nanoparticles on two Gram-negative and three Gram-positive foodborne pathogens was investigated. CeO2 nanoparticles (CeO2 nps) were synthesized by a Wet Chemical Synthesis route, using the precipitation method and the Simultaneous Addition of reactants (WCS–SimAdd). The as-obtained precursor powders were investigated by thermal analysis (TG–DTA), to study their decomposition process and to understand the CeO2 nps formation. The composition, structure, and morphology of the thermally treated sample were investigated by FTIR, Raman spectroscopy, X-ray diffraction, TEM, and DLS. The cubic structure and average particle size ranging between 5 and 15 nm were evidenced. Optical absorption measurements (UV–Vis) reveal that the band gap of CeO2 is 2.61 eV, which is smaller than the band gap of bulk ceria. The antioxidant effect of CeO2 nps was determined, and the antibacterial test was carried out both in liquid and on solid growth media against five pathogenic microorganisms, namely Escherichia coli, Salmonella typhimurium, Listeria monocytogenes, Staphylococcus aureus, and Bacillus cereus. Cerium oxide nanoparticles showed growth inhibition toward all five pathogens tested with notable results. This paper highlights the perspectives for the synthesis of CeO2 nps with controlled structural and morphological characteristics and enhanced antibacterial properties, using a versatile and low-cost chemical solution method.

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Easy-to-use and inexpensive sensors for assessing the quality and traceability of cosmetic antioxidants

Cited by 21 publications

References 25 publications

Nanoclay-based sensor composites for the facile detection of molecular antioxidants

Nanoclay-based sensor composites for the facile detection of molecular antioxidants

3D-Printable Nanocellulose-Based Functional Materials: Fundamentals and Applications

Cerium Oxide Nanoparticles and Their Efficient Antibacterial Application In Vitro against Gram-Positive and Gram-Negative Pathogens

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