4.7 Article

Development of a Chemically Modified Sensor Based on a Pentapeptide and Its Application for Sensitive Detection of Verbascoside in Extra Virgin Olive Oil

Related references

Note: Only part of the references are listed.
Article Materials Science, Multidisciplinary

Phenomenological description of the thermal reduction kinetics in graphene oxide films

Hamdane Akbi et al.

Summary: This study presents a straightforward and cost-effective method for preparing thermally reduced graphene oxide films and investigates the kinetic properties of the related thermal reduction mechanism using a model-free approach. The results demonstrate successful reduction of graphene oxide films with significantly improved electrical conductivity. The estimated activation energy values suggest that the structure, morphology, and reduction conditions of graphene oxide are key factors to consider in modeling and predicting its thermal reduction mechanism.

MATERIALS CHEMISTRY AND PHYSICS (2022)

Article Polymer Science

Quantification of Tyrosine in Pharmaceuticals with the New Biosensor Based on Laccase-Modified Polypyrrole Polymeric Thin Film

Ancuta Dinu et al.

Summary: This study presents the development of a new enzyme sensor for the quantification of tyrosine in pharmaceuticals. The enzyme sensor showed a low limit of detection and high sensitivity, and was validated using infrared spectrometry on pharmaceuticals from different manufacturers.

POLYMERS (2022)

Article Chemistry, Multidisciplinary

Verbascoside extracted from Clerodendrum inerme: A natural monomer for the fabrication of a sensitive electrochemical Cu(II) sensor

Minh T. Tran et al.

Summary: In this study, verbascoside, a phenolic glycoside, was successfully isolated from the stems of Clerodendrum inerme collected in Vietnam. It was then applied for the electrochemical sensing of Cu2+. The results showed that the polyverbascoside-modified electrode exhibited high selectivity towards Cu2+ ions and could detect them with high sensitivity.

JOURNAL OF CHEMICAL RESEARCH (2022)

Article Chemistry, Physical

Tyrosinase-Based Biosensor-A New Tool for Chlorogenic Acid Detection in Nutraceutical Formulations

Irina Georgiana Munteanu et al.

Summary: The purpose of this research was to develop a new enzymatic biosensor for sensitive detection of chlorogenic acid (CGA). The modified electrode showed a great catalytic effect on the electrochemical redox of CGA, leading to a linear peak current response. The detection limit and quantification limit were determined, and the method proved suitable for the detection of CGA in nutraceutical formulations. The correlation between the voltammetric method and the spectrophotometric one was good, and the antioxidant activity of CGA was demonstrated.

MATERIALS (2022)

Article Biochemistry & Molecular Biology

Synergistic Effect of DIBOA and Verbascoside from Acanthus mollis Leaf on Tyrosinase Inhibition

Patricia Matos et al.

Summary: Overexpression of melanin can cause darkening of tissues, but medicinal plants are considered good sources of tyrosinase inhibitors. A. mollis leaf extract showed potential inhibitory activity through a non-competitive reaction mechanism, with a synergistic effect observed in a binary combination of its phytochemicals. Both the extract and a mixture of two of its components can be effective tyrosinase inhibitors for future cosmetic formulations.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2022)

Article Biochemistry & Molecular Biology

Assessment of the Antioxidant Activity of Catechin in Nutraceuticals: Comparison between a Newly Developed Electrochemical Method and Spectrophotometric Methods

Irina Georgiana Munteanu et al.

Summary: The analysis of antioxidants in different foodstuffs has been a popular area of research, leading to the development of new antioxidant assays. Green tea, known for its health benefits, contains catechin, an important antioxidant. This study investigates the use of different electrodes and enzyme modifications to measure the catechin content and antioxidant activity in green tea.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2022)

Article Biochemistry & Molecular Biology

Sensitive Detection of Hydroxytyrosol in Extra Virgin Olive Oils with a Novel Biosensor Based on Single-Walled Carbon Nanotubes and Tyrosinase

Alexandra Virginia Bounegru et al.

Summary: Hydroxytyrosol (HT) is an important marker for authenticity and quality assessment of extra virgin olive oils (EVOO). This study developed a biosensor based on a screen-printed electrode modified with single-layer carbon nanotubes and tyrosinase (SPE-SWCNT-Ty) for the qualitative and quantitative determination of hydroxytyrosol in commercial EVOOs. The results showed that the biosensor exhibited increased selectivity and sensitivity, making it suitable for quality control of EVOOs.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2022)

Article Chemistry, Analytical

Simultaneous Determination of Caffeic Acid and Ferulic Acid Using a Carbon Nanofiber-Based Screen-Printed Sensor

Alexandra Virginia Bounegru et al.

Summary: This study aimed to simultaneously qualitatively and quantitatively determine two hydroxycinnamic acids using a carbon nanofiber-based screen-printed sensor. The method was found to be stable, reproducible, and sensitive, making it suitable for detecting these compounds in various dietary supplements or pharmaceutical products.

SENSORS (2022)

Article Chemistry, Multidisciplinary

Sensitive Detection of Rosmarinic Acid Using Peptide-Modified Graphene Oxide Screen-Printed Carbon Electrode

Irina Georgiana Munteanu et al.

Summary: Peptides have been used as components in biological analysis and fabrication of novel sensors due to their synthesis protocols and diverse structures. This study presents the development of a peptide-based sensor with improved performance for the quantification of rosmarinic acid in cosmetic products.

NANOMATERIALS (2022)

Article Chemistry, Analytical

Development of a Novel Electrochemical Biosensor Based on Organized Mesoporous Carbon and Laccase for the Detection of Serotonin in Food Supplements

Dorin Dascalescu et al.

Summary: A new Lac-based biosensor has been developed to qualitatively and quantitatively determine serotonin in dietary supplements. The biosensor showed selective detection capabilities and superior electrochemical performance. The quantitative determination of serotonin by square-wave voltammetry showed good correlation with the FTIR method.

CHEMOSENSORS (2022)

Article Biophysics

Biosynthesis and physico-chemical characterization of high performing peptide hydrogels@graphene oxide composites

Laura Chronopoulou et al.

Summary: Hydrogels based on short peptide molecules were reinforced with graphene oxide nanosheets in this study to improve their mechanical properties. The innovative hydrogel composite formulation showed potential for biotechnological applications.

COLLOIDS AND SURFACES B-BIOINTERFACES (2021)

Review Biochemistry & Molecular Biology

Evaluation of Olive Oil Quality with Electrochemical Sensors and Biosensors: A Review

Alexandra Virginia Bounegru et al.

Summary: This review discusses the recent progress in using devices based on electrochemical (bio)sensors to evaluate the bioactive compounds in olive oil, highlighting the advantages and limitations of these methods. It aims at achieving a portable, practical and rapid miniature device for analyzing the quality of virgin olive oil at different stages in the manufacturing process.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2021)

Review Biochemistry & Molecular Biology

A Review on Electrochemical Sensors and Biosensors Used in Chlorogenic Acid Electroanalysis

Irina Georgiana Munteanu et al.

Summary: Chlorogenic acid, a phenolic compound, has various beneficial effects on human health including inhibiting carcinogenesis, antioxidant properties, and anti-inflammatory activities. Several methods have been developed to determine chlorogenic acid content, with some limitations in terms of being time-consuming and requiring expensive instruments.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2021)

Review Biochemistry & Molecular Biology

Peptide-Protein Interactions: From Drug Design to Supramolecular Biomaterials

Andrea Caporale et al.

Summary: The self-recognition and self-assembly of biomolecules are spontaneous processes that allow the formation of ordered structures, where weak interactions play a key role in the formation of secondary structures, impacting biological processes. Peptides are important in this process, leading to the development of new drugs, biomaterials, catalysts, or semiconductors through rational design.

MOLECULES (2021)

Article Biophysics

Peptide-based electrochemical biosensors utilized for protein detection

Veronika Vanova et al.

Summary: This article discusses the detection of protein biomarkers, focusing on the potential of peptides combined with electrochemical biosensors, as well as the detection methods and sensing mechanisms for different types of proteins.

BIOSENSORS & BIOELECTRONICS (2021)

Article Chemistry, Analytical

Electrochemical Sensor for Determination of Various Phenolic Compounds in Wine Samples Using Fe3O4 Nanoparticles Modified Carbon Paste Electrode

Pwadubashiyi C. Pwavodi et al.

Summary: A sensitive electrochemical sensor was developed using a carbon paste electrode modified with Fe3O4 nanoparticles for the determination of sinapic acid, syringic acid, and rutin, showing excellent sensitivity and performance.

MICROMACHINES (2021)

Article Biochemistry & Molecular Biology

Development of a Novel Electrochemical Biosensor Based on Carbon Nanofibers-Cobalt Phthalocyanine-Laccase for the Detection of p-Coumaric Acid in Phytoproducts

Alexandra Virginia Bounegru et al.

Summary: The study introduced a novel enzymatic biosensor, utilizing a screen-printed electrode modified with carbon nanofibers to determine the content of p-coumaric acid. The biosensor showed stable and sensitive responses, with low LOD and LOQ values, and successfully detected p-coumaric acid in phytoproducts of complex composition. The results obtained were comparable to those obtained by the standard spectrometric method.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2021)

Article Engineering, Multidisciplinary

Determination of Atorvastatin with Voltammetric Sensors Based on Nanomaterials

Ramona Oana Gunache (Rosca) et al.

Summary: A new electrochemical method utilizing two different screen-printed sensors for accurate and fast determination of atorvastatin in pharmaceutical products was developed. The AuNP-CNT/SPCE sensor showed improved performance compared to the unmodified sensor, demonstrating feasibility in determining atorvastatin from real samples and pharmaceutical products. The results were consistent with manufacturer's specifications and FTIR spectrometric method.

INVENTIONS (2021)

Review Nanoscience & Nanotechnology

Self-Assembled Peptide Drug Delivery Systems

Jia Yang et al.

Summary: Peptides can be used as modules to construct self-assembled peptide nanomaterials, which have the potential to reduce drug toxicity, improve drug targeting, and enhance drug delivery efficiency. Different strategies for designing peptide nanomaterials, including ex situ construction, in situ morphological transformation, and in situ construction of peptide drug delivery systems, can be used for drug delivery.

ACS APPLIED BIO MATERIALS (2021)

Article Chemistry, Multidisciplinary

The electrochemical redox mechanism and antioxidant activity of polyphenolic compounds based on inlaid multi-walled carbon nanotubes-modified graphite electrode

Xiaofen Li et al.

Summary: The electrochemical redox mechanism of polyphenolic compounds was investigated on multi-walled carbon nanotubes-modified graphite electrode, with compounds showing lower oxidation peak potential exhibiting stronger antioxidation activity. The greater the number of hydroxyls linked to the aromatic ring, the stronger the antioxidation activities of the compounds. Multiple hydroxyl substitutions and conjugations determine the free radical scavenging activity and electrochemical behavior of these phenolic-based compounds.

OPEN CHEMISTRY (2021)

Review Biochemistry & Molecular Biology

Bioactive Peptides and Dietary Polyphenols: Two Sides of the Same Coin

Rosa Perez-Gregorio et al.

MOLECULES (2020)

Review Chemistry, Multidisciplinary

Supramolecular polymer bottlebrushes

Franka V. Gruschwitz et al.

CHEMICAL COMMUNICATIONS (2020)

Proceedings Paper Materials Science, Multidisciplinary

Synthesis and characterization of graphene oxide nanosheets

M. Muniyalakshmi et al.

MATERIALS TODAY-PROCEEDINGS (2020)

Article Biochemistry & Molecular Biology

Chromatographic Separation of Phenolic Compounds from Extra Virgin Olive Oil: Development and Validation of a New Method Based on a Biphenyl HPLC Column

Miguel D. Ferro et al.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2019)

Review Chemistry, Multidisciplinary

Applications of π-π stacking interactions in the design of drug-delivery systems

Wan-Ru Zhuang et al.

JOURNAL OF CONTROLLED RELEASE (2019)

Article Materials Science, Biomaterials

Covalent conjugation of bioactive peptides to graphene oxide for biomedical applications

Karoline E. Eckhart et al.

BIOMATERIALS SCIENCE (2019)

Review Chemistry, Medicinal

Phenolic-Protein Interactions: Effects on Food Properties and Health Benefits

Nydia E. Buitimea-Cantua et al.

JOURNAL OF MEDICINAL FOOD (2018)

Article Biochemistry & Molecular Biology

A new colorimetric DPPH• scavenging activity method with no need for a spectrophotometer applied on synthetic and natural antioxidants and medicinal herbs

Zeynep Akar et al.

JOURNAL OF ENZYME INHIBITION AND MEDICINAL CHEMISTRY (2017)

Article Physics, Applied

A Study on Voltametric Electro-Kinetic Mechanism of Catechol at l-Glutamic Acid-Carbon Paste Sensor

Tadesse Abrha et al.

JOURNAL OF SURFACE SCIENCE AND TECHNOLOGY (2017)

Review Food Science & Technology

Extraction, benefits and valorization of olive polyphenols

Rosaria Ciriminna et al.

EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY (2016)

Article Nanoscience & Nanotechnology

Voltammetric determination of melatonin using a graphene-based sensor in pharmaceutical products

Irina Mirela Apetrei et al.

INTERNATIONAL JOURNAL OF NANOMEDICINE (2016)

Article Biochemical Research Methods

Relative Quantification of Sites of Peptide and Protein Modification Using Size Exclusion Chromatography Coupled with Electron Transfer Dissociation

Boer Xie et al.

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY (2016)

Review Chemistry, Analytical

Recent trends in carbon nanomaterial-based electrochemical sensors for biomolecules: A review

Cheng Yang et al.

ANALYTICA CHIMICA ACTA (2015)

Article Chemistry, Inorganic & Nuclear

Effect of reducing system on capacitive behavior of reduced graphene oxide film: Application for supercapacitor

Hamdane Akbi et al.

JOURNAL OF SOLID STATE CHEMISTRY (2015)

Article Chemistry, Multidisciplinary

On the origin of the stability of graphene oxide membranes in water

Che-Ning Yeh et al.

Nature Chemistry (2015)

Review Chemistry, Analytical

Peptide-based biosensors

Qingtao Liu et al.

TALANTA (2015)

Article Chemistry, Physical

Investigation of Graphene/Ag Nanocomposites Synthesis Parameters for Two Different Synthesis Methods

Zafer Ciplak et al.

FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES (2015)

Review Physics, Condensed Matter

Graphene oxide: from fundamentals to applications

F. Perrozzi et al.

JOURNAL OF PHYSICS-CONDENSED MATTER (2015)

Review Biotechnology & Applied Microbiology

Verbascoside - A review of its occurrence, (bio)synthesis and pharmacological significance

Kalina Alipieva et al.

BIOTECHNOLOGY ADVANCES (2014)

Article Biochemistry & Molecular Biology

Assessment of morphology and property of graphene oxide-hydroxypropylmethylcellulose nanocomposite films

Tapas Kumar Ghosh et al.

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES (2014)

Article Agriculture, Multidisciplinary

Minor Polar Compounds in Extra Virgin Olive Oil: Correlation between HPLC-DAD-MS and the Folin-Ciocalteu Spectrophotometric Method

Stefano Alessandri et al.

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY (2014)

Article Biotechnology & Applied Microbiology

Evaluation of potential antigenotoxic, cytotoxic and proapoptotic effects of the olive oil by-product alperujo, hydroxytyrosol, tyrosol and verbascoside

Jaouad Anter et al.

MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS (2014)

Article Physics, Applied

Graphene based piezoresistive pressure sensor

Shou-En Zhu et al.

APPLIED PHYSICS LETTERS (2013)

Article Biochemical Research Methods

Redox Behaviour of Verbascoside and Rosmarinic Acid

Eric de Souza Gil et al.

COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING (2013)

Review Food Science & Technology

Potential of olive oil phenols as chemopreventive and therapeutic agents against cancer: A review of in vitro studies

Ivan Casaburi et al.

MOLECULAR NUTRITION & FOOD RESEARCH (2013)

Article Biochemistry & Molecular Biology

Conformational States of Macromolecular Assemblies Explored by Integrative Structure Calculation

Konstantinos Thalassinos et al.

STRUCTURE (2013)

Article Physics, Applied

Effect of graphene oxide doping on superconducting properties of bulk MgB2

Sudesh et al.

SUPERCONDUCTOR SCIENCE & TECHNOLOGY (2013)

Review Chemistry, Multidisciplinary

Graphene Photonics, Plasmonics, and Broadband Optoelectronic Devices

Qiaoliang Bao et al.

ACS NANO (2012)

Article Chemistry, Multidisciplinary

3D Macroporous Graphene Frameworks for Supercapacitors with High Energy and Power Densities

Bong Gill Choi et al.

ACS NANO (2012)

Review Chemistry, Multidisciplinary

Graphene Oxide: Preparation, Functionalization, and Electrochemical Applications

Da Chen et al.

CHEMICAL REVIEWS (2012)

Article Biochemistry & Molecular Biology

A graphene oxide-peptide fluorescence sensor for proteolytically active prostate-specific antigen

Tingting Feng et al.

MOLECULAR BIOSYSTEMS (2012)

Article Multidisciplinary Sciences

Laser Scribing of High-Performance and Flexible Graphene-Based Electrochemical Capacitors

Maher F. El-Kady et al.

SCIENCE (2012)

Article Chemistry, Analytical

Phenol and para-substituted phenols electrochemical oxidation pathways

Teodor Adrian Enache et al.

JOURNAL OF ELECTROANALYTICAL CHEMISTRY (2011)

Review Chemistry, Multidisciplinary

The chemistry of graphene oxide

Daniel R. Dreyer et al.

CHEMICAL SOCIETY REVIEWS (2010)

Review Biochemistry & Molecular Biology

Biological Activities of Phenolic Compounds Present in Virgin Olive Oil

Sara Cicerale et al.

INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES (2010)

Article Chemistry, Multidisciplinary

Graphene Oxide-Facilitated Electron Transfer of Metalloproteins at Electrode Surfaces

Xiaolei Zuo et al.

LANGMUIR (2010)

Article Chemistry, Multidisciplinary

Covalent Monofunctionalization of Peptide-Coated Quantum Dots for Single-Molecule Assays

Samuel Clarke et al.

NANO LETTERS (2010)

Article Materials Science, Multidisciplinary

Oxidation functional groups on graphene: Structural and electronic properties

Jia-An Yan et al.

PHYSICAL REVIEW B (2010)

Review Chemistry, Analytical

Environmentally Sensitive Fluorescent Sensors Based on Synthetic Peptides

Laurence Choulier et al.

SENSORS (2010)

Article Biochemical Research Methods

Key aspects of analytical method validation and linearity evaluation

Pedro Araujo

JOURNAL OF CHROMATOGRAPHY B-ANALYTICAL TECHNOLOGIES IN THE BIOMEDICAL AND LIFE SCIENCES (2009)

Article Biochemistry & Molecular Biology

Solitary and repetitive binding motifs for the AP2 complex α-appendage in amphiphysin and other accessory proteins

Lene E. Olesen et al.

JOURNAL OF BIOLOGICAL CHEMISTRY (2008)

Article Chemistry, Analytical

A practical guide to analytical method validation, including measurement uncertainty and accuracy profiles

A. Gustavo Gonzalez et al.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2007)

Article Chemistry, Analytical

Modified carbon paste electrodes for discrimination of vegetable oils

C Apetrei et al.

SENSORS AND ACTUATORS B-CHEMICAL (2005)

Article Multidisciplinary Sciences

De novo designed peptide-based amyloid fibrils

ML de la Paz et al.

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA (2002)