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1. Brazilein as an alternative pigment: Isolation, characterization, stability enhancement and food applications

Author:
Luxsika Ngamwonglumlert; Sakamon Devahastin
Source:
Food chemistry 2023 v.398 pp. 133898
ISSN:
0308-8146
Subject:
chemical structure,   etc   ; color; food chemistry; pH;     Show all 4 Subjects
Abstract:
... 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 ...
DOI:
10.1016/j.foodchem.2022.133898

2. Recent advances of traditional Chinese medicine for the prevention and treatment of atherosclerosis

Author:
Wenbing Zhi; Yang Liu; Xiumei Wang; Hong Zhang
Source:
Journal of ethnopharmacology 2023 v.301 pp. 115749
ISSN:
0378-8741
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.jep.2022.115749

3. Sodium titanium phosphate nanocube decorated on tablet-like carbon for robust sodium storage performance at low temperature

Author:
Jiabao Li; Ziqian Li; Shaocong Tang; Tianyi Wang; Kai Wang; Likun Pan; Chengyin Wang
Source:
Journal of colloid and interface science 2023 v.629 pp. 121-132
ISSN:
0021-9797
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.jcis.2022.09.059

4. Interaction between black mulberry pectin-rich fractions and cyanidin-3-O-glucoside under in vitro digestion

Author:
Songen Wang; Xuan Zhang; Jian Ai; Zhewen Yue; Ying Wang; Bin Bao; Lingmin Tian; Weibin Bai
Source:
Food hydrocolloids 2023 v.134 pp. 108110
ISSN:
0268-005X
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.foodhyd.2022.108110

5. Polysaccharides from pinhão seeds of Araucaria angustifolia: Extraction, isolation and structural characterization

Author:
Shayla Fernanda Barbieri; Lucas Trevisan França de Lima; Jéssica Caroline Scholze Baum; Keylla Lençone Mischiatti; Rossana Catie Bueno de Godoy; Joana Léa Meira Silveira
Source:
Journal of food composition and analysis 2023 v.115 pp. 104888
ISSN:
0889-1575
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.jfca.2022.104888

6. Characterization of the improved functionality in soybean protein-proanthocyanidins conjugates prepared by the alkali treatment

Author:
Xiaowen Pi; Yuxue Sun; Jiafei Liu; Xu Wang; Weichen Hong; Jianjun Cheng; Mingruo Guo
Source:
Food hydrocolloids 2023 v.134 pp. 108107
ISSN:
0268-005X
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.foodhyd.2022.108107

7. Traditional Chinese Medicine has great potential as candidate drugs for lung cancer: A review

Author:
Zhicheng Wei; Jing Chen; Fang Zuo; Julie Guo; Xiaodong Sun; Deming Liu; Conghai Liu
Source:
Journal of ethnopharmacology 2023 v.300 pp. 115748
ISSN:
0378-8741
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.jep.2022.115748

8. Interaction of Polycyclic Aromatic Hydrocarbon compounds in fish primary hepatocytes: From molecular mechanisms to genotoxic effects

Author:
Isabella Bramatti; Beatriz Matos; Neusa Figueiredo; Pedro Pousão-Ferreira; Vasco Branco; Marta Martins
Source:
Science of the total environment 2023 v.855 pp. 158783
ISSN:
0048-9697
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.scitotenv.2022.158783

9. Oriented Growth of Thin Films of Covalent Organic Frameworks with Large Single-Crystalline Domains on the Water Surface

Author:
Zhaowei Ou; Baokun Liang; Zihao Liang; Fanglin Tan; Xin Dong; Li Gong; Pei Zhao; Honglei Wang; Yuhai Zou; Yuanjun Xia; Xudong Chen; Wei Liu; Haoyuan Qi; Ute Kaiser; Zhikun Zheng
Source:
Journal of the American Chemical Society 2022 v.144 no.7 pp. 3233-3241
ISSN:
1520-5126
Subject:
chemical structure,   etc   ; electronics; polymers;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1021/jacs.1c13195

10. Tailored Solvatochromic NIR Phosphorus-Chromophores via Selective P−N and P−C Chemistry in P-Heteropines

Author:
Zi Yang; Xinyu Li; Kai Yang; Zhikai Zhang; Yankun Wang; Na Yu; Thomas Baumgartner; Yi Ren
Source:
Organic letters 2022 v.24 no.10 pp. 2045-2049
ISSN:
1523-7052
Subject:
chemical structure,   etc   ; indoles; phosphorus;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1021/acs.orglett.2c00570

11. Improving the reducibility of CeO₂/TiO₂ by high-temperature redox treatment: the key role of atomically thin CeO₂ surface layers

Author:
Ramón Manzorro; José M. Montes-Monroy; D. Goma-Jiménez; José J. Calvino; José A. Pérez-Omil; S. Trasobares
Source:
Journal of materials chemistry A 2022 v.10 no.24 pp. 13074-13087
ISSN:
2050-7496
Subject:
chemical structure,   etc   ; spectroscopy; temperature;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1039/d1ta08348a

12. The function of the axon initial segment in neuronal polarity

Author:
Kelsie Eichel; Kang Shen
Source:
Developmental biology 2022 v.489 pp. 47-54
ISSN:
0012-1606
Subject:
chemical structure,   etc   ; axons; neurophysiology;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1016/j.ydbio.2022.05.016

13. Hemithioindigo-Based Trioxobicyclononadiene: 3D Multiswitching of Electronic and Geometric Properties

Author:
Fabien Kohl; Aaron Gerwien; Frank Hampel; Peter Mayer; Henry Dube
Source:
Journal of the American Chemical Society 2022 v.144 no.7 pp. 2847-2852
ISSN:
1520-5126
Subject:
chemical structure,   etc   ; geometry; photochemistry;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1021/jacs.1c12364

14. Visible-light-induced one-pot synthesis of sulfonic esters via multicomponent reaction of arylazo sulfones and alcohols

Author:
Truong Giang Luu; Tien Tan Bui; Hee-Kwon Kim
Source:
RSC advances 2022 v.12 no.27 pp. 17499-17504
ISSN:
2046-2069
Subject:
chemical structure,   etc   ; catalysts; synthesis;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1039/d2ra02656b

15. Robust molecular-dipole-induced surface functionalization of inorganic perovskites for efficient solar cells

Author:
Junming Qiu; Qisen Zhou; Donglin Jia; Yunfei Wang; Shuang Li; Xiaoliang Zhang
Source:
Journal of materials chemistry A 2022 v.10 no.4 pp. 1821-1830
ISSN:
2050-7496
Subject:
chemical structure,   etc   ; cinnamic acid; energy;     Show all 3 Subjects
Abstract:
... 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 ...
DOI:
10.1039/d1ta09756c

16. Stereoselective Total Syntheses of C18-Oxo Eburnamine-Vincamine Alkaloids

Author:
Wen Zhang; Zhenzhen Wang; Guodan Lin; Yansong Xue; Mengjuan Wu; Pei Tang; Fener Chen
Source:
Organic letters 2022 v.24 no.12 pp. 2409-2413
ISSN:
1523-7052
Subject:
chemical structure,   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 ...
DOI:
10.1021/acs.orglett.2c00661

17. Exploring molecular structure characteristics and chemical index of Qinghua bituminous coal: A comprehensive insight from single molecule of macerals to particles with various sizes

Author:
Qiang Wang; Jinpeng Zhang; Huining Li; Hui Zhang; Hongcun Bai; Qingjie Guo
Source:
Powder technology 2022 v.396 pp. 36-49
ISSN:
0032-5910
Subject:
chemical structure,   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 ...
DOI:
10.1016/j.powtec.2021.10.035

18. Template-Free Synthesis of an Interlocked Covalent Organic Molecular Cage

Author:
Danbo Wang; Lin Zhang; Yingjie Zhao
Source:
Journal of organic chemistry 2022 v.87 no.5 pp. 2767-2772
ISSN:
1520-6904
Subject:
chemical structure,   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 ...
DOI:
10.1021/acs.joc.1c02688

19. An overview of magnetic ionic liquids: From synthetic strategies to applications in microextraction techniques

Author:
Mônica Silva Alves; Luiz Carlos Ferreira Neto; Camila Scheid; Josias Merib
Source:
Journal of separation science 2022 v.45 no.1 pp. 258-281
ISSN:
1615-9306
Subject:
chemical structure,   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 ...
DOI:
10.1002/jssc.202100599

20. Chemical structure modulation in conductive MOFs by adjusting the oxidation state of the ligand and introducing alkali metal ions [Erratum: April 2022, Vol.58(31), p.4917]

Author:
Xiaoyu Wu; Haowei Wu; Sicheng Wu; Yimeng Sun; Jia Zhu; Ye Zou; Wei Xu; Daoben Zhu
Source:
Chemical communications 2022 v.58 no.16 pp. 2702-2705
ISSN:
1364-548X
Subject:
chemical structure,   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 ...
DOI:
10.1039/d1cc06407j