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... This review gives, for the first time, a systematic presentation and discussion on the chemistry and use of brazilein in foods. Processes of isolation, purification and quantification of this alternative pigment are firstly reviewed. Molecular structure and color stabilities as well as ways to enhance stability of the pigment are then discussed. Selected applications of the pigment in foods are gi ...
chemicalstructure, etc ; Oriental traditional medicine; atherosclerosis; macrophages; models; modernization; morbidity; mortality; patents; smooth muscle; Show all 10 Subjects
Abstract:
... Atherosclerosis (AS) is a common systemic disease with increasing morbidity and mortality worldwide. Traditional Chinese medicine (TCM) with characteristics of multiple pathways and targets, presents advantages in the diagnosis and treatment of atherosclerosis. With the modernization of TCM, the active ingredients and molecular mechanisms of TCM for AS treatment have been gradually revealed. There ...
chemicalstructure, etc ; ambient temperature; carbon; diffusivity; electric potential difference; electrochemistry; electrolytes; nanomaterials; phosphates; reaction kinetics; sodium; titanium; Show all 12 Subjects
Abstract:
... Sodium-ion batteries, featuring resource abundance and similar working mechanisms to lithium-ion batteries, have gained extensive interest in both scientific exploration and industrial applications. However, the extremely sluggish reaction kinetics of charge carrier (Na⁺) at subzero temperatures significantly reduces their specific capacities and cycling life. Herein, this study presents a novel h ...
chemicalstructure, etc ; Morus nigra; anthocyanins; digestion; fermentation; galactose; galacturonic acid; glucose; hydrocolloids; hydrogen; hydrophobic bonding; mannose; mulberries; pectins; rhamnose; small intestine; temperature; Show all 17 Subjects
Abstract:
... Pectic polysaccharides are potential candidates to enhance the stability of anthocyanins, and the interactions between pectin and anthocyanin are structure-dependent. In this study, mulberry pectic polysaccharides, extracted through different methods, and mulberry cyanidin-3-O-glucoside (C3G) were used to prepare complexes whose characterization and in vitro digestive properties were then investig ...
Shayla Fernanda Barbieri; Lucas Trevisan França de Lima; Jéssica Caroline Scholze Baum; Keylla Lençone Mischiatti; Rossana Catie Bueno de Godoy; Joana Léa Meira Silveira
chemicalstructure, etc ; Araucaria angustifolia; arabinans; arabinose; cell walls; conifers; dietary supplements; ecosystems; enzymatic treatment; food composition; glucose; industry; nuclear magnetic resonance spectroscopy; starch; Show all 14 Subjects
Abstract:
... Araucaria angustifolia is one of the main conifer species with great economic importance. Its seeds, known as pinhão, play a fundamental role in ecosystem conservation and have promising potential for application in the food/nutraceutical industry. This study aimed to elucidate the fine chemical structure of polysaccharides, showing for the first time the composition of non-starch polysaccharides ...
chemicalstructure, etc ; alkali treatment; allergens; antioxidant activity; enzyme-linked immunosorbent assay; epitopes; hydrocolloids; hydrophobicity; liquid chromatography; peptides; polyacrylamide gel electrophoresis; polyphenols; protein composition; soybeans; Show all 14 Subjects
Abstract:
... This study investigated the changes in functionality, structure, and protein composition in soybean protein-proanthocyanidins (SPI-PC) conjugates prepared by the alkali method with dose-ranging PC molecular grafting (0.5, 1, 2 mg/mL). Sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) demonstrated that more >180 kDa polymers were formed in SPI-PC conjugates with the increase of P ...
chemicalstructure, etc ; Oriental traditional medicine; apoptosis; autophagy; cell cycle; cytotoxicity; drug resistance; drug therapy; flavonoids; human health; lung neoplasms; metastasis; morbidity; mortality; neoplasm cells; polyphenols; terpenoids; Europe; Show all 18 Subjects
Abstract:
... With high mortality and morbidity rates, lung cancer (LC) has become one of the major threats to human health. The treatment strategies for LC currently face issues, such as drug resistance and body tolerance. Traditional Chinese medicine (TCM) is characterized by novel pharmacological mechanisms, low toxicity, and limited side effects. TCM includes a substantial number of biologically active ingr ...
chemicalstructure, etc ; DNA; DNA damage; Sparus aurata; Western blotting; carcinogenicity; cell viability; comet assay; environment; environmental assessment; fish; genes; genotoxicity; hepatocytes; metabolites; mutagens; phenanthrenes; protein synthesis; risk assessment; Show all 19 Subjects
Abstract:
... Polycyclic Aromatic Hydrocarbons (PAHs) are persistent pollutants normally found in the environment as complex mixtures. Although several individual PAHs are classified as mutagenic and carcinogenic pollutants, the interaction effects between compounds in a mixture may trigger different toxicological mechanisms and, consequently, yield different effects to organisms which are not accounted for in ...
... It has been a longstanding challenge to rationally synthesize thin films of organic two-dimensional (2D) crystals with large single-crystalline domains. Here, we present a general strategy for the creation of 2D crystals of covalent organic frameworks (COFs) on the water surface, assisted by a charged polymer. The morphology of the preorganized monomers underneath the charged polymer on the water ...
... Herein we report selective P–C and P–N chemistry as a new synthetic tool for constructing phosphorus (P)-chromophores with rich chemical structures. Our studies reveal that isomeric structures significantly influence the chemical structure and electronic communication of P-heteropines, which results in efficient tunability of the photophysical properties. In particular, isomeric P-chromophores wit ...
... CeO₂/TiO₂ catalysts treated in reaction environment at high temperatures evolve into complex and diverse systems, where several mixed oxides are formed. To analyze the redox behavior of this system, multiple oxidations and reducing thermal treatments have been applied. Results from the temperature-programmed reduction studies revealed a clear shift at lower temperatures on the reduction peak when ...
... Neurons are highly polarized cells with extensive axonal and dendritic projections that send and receive signals over long distances. Neuronal polarity requires sorting and maintaining a unique set of proteins to the neuron's distinct axonal and somatodendritic domains. The axon initial segment (AIS) is a specialized subcellular region located between these two domains and is critical for neuronal ...
... Molecular photoswitches that offer simultaneous precise control over geometrical and electronic changes are rare yet highly sought tools for the development of responsive nanosystems. Here we present such an advantageous combination of property control within a novel multiphotoswitch architecture. Hemithioindigo-based trioxobicyclononadiene (HTI-TOND) offers a rigid three-dimensional molecular str ...
... Sulfonic ester is a chemical structure common to many organic molecules, including biologically active compounds. Herein, a visible-light-induced synthetic method to prepare aryl sulfonic ester from arylazo sulfones was developed. In the present study, a one-pot reaction was carried out using arylazo sulfones, DABSO (DABCO·(SO₂)₂), and alcohols in the presence of CuI as a coupling catalyst and HCl ...
... CsPbI₃ inorganic perovskite shows high potential for single-junction or tandem solar cells due to its suitable bandgap energy (Eg = ∼1.7 eV), but defect-assisted nonradiative recombination and unmatched interfacial band alignment within the inorganic perovskite solar cells (PSCs) to a large extent affect its photovoltaic performance. Herein, the derivatives of cinnamic acid (CA) are applied for th ...
chemicalstructure, etc ; hydrogenation; stereochemistry; stereoselectivity; Show all 4 Subjects
Abstract:
... Here, we disclose the divergent total syntheses of representative C18-oxo eburnamine-vincamine alkaloids (+)-eburnaminol, (−)-larutenine, and (−)-cuanzine. Key to the approach is a substrate-controlled iridium-catalyzed asymmetric hydrogenation/lactamization cascade that leads to the formation of the common tetracyclic skeleton with essential cis-C20/C21 stereochemistry (93% yield, 98% ee, >20:1 d ...
chemicalstructure, etc ; coal; energy; technology; China; Show all 5 Subjects
Abstract:
... Understanding the relationship between the coal structure and its reactive behaviour is of great significance to achieve clean coal conversion and its efficient utilisation. One of the key tasks is to elucidate the molecular structure and chemical bonding information of coal. Owing to the complexity of the chemical structure of coal, studies on the molecular structure of coal, especially coal mode ...
chemicalstructure, etc ; anthracenes; imines; organic chemistry; Show all 4 Subjects
Abstract:
... An interlocked covalent organic molecular cage with a trigonal-prismatic structure based on anthracene units and imine bonds was synthesized by a template-free and one-pot reaction in a relatively good yield. By comparing the single-crystal structures of the interlocked cage and two additional monomeric cages as reference compounds, a cause of weak supramolecular interaction-induced synthesis was ...
chemicalstructure, etc ; ionic liquids; microextraction; separation; Show all 4 Subjects
Abstract:
... Remarkable progress has been achieved in the application of magnetic ionic liquids in microextraction‐based procedures. These materials exhibit unique physicochemical properties of ionic liquids featuring additional responses to magnetic fields by incorporating a paramagnetic component within the chemical structure. This intriguing property can open new horizons in analytical extractions because t ...
chemicalstructure, etc ; electrical conductivity; ligands; oxidation; Show all 4 Subjects
Abstract:
... The metal–organic frameworks (MOFs) have attracted more and more attention and some MOFs have shown advanced electrical conductivity. Based on previous work about MnTHBQ (THBQ = tetrahydroxy-1,4-benzoquinone), we present two strategies, variation of the ligands’ oxidation states and introducing alkali ions (Rb⁺ or Cs⁺), to modulate the structures of MOFs and obtained three new MOFs: MnHHB (HHB = h ...