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1. Bioinspired construction of magnetic nano stirring rods with radially aligned dual mesopores and intrinsic rapid adsorption of palladium

Author:
Fan Wu; Hao Li; Yang Pan; Yonghui Sun; Jianming Pan
Source:
Journal of hazardous materials 2023 v.441 pp. 129917
ISSN:
0304-3894
Subject:
adsorption; aminoquinolines; capacitors; chelation; electronic wastes; ion exchange; leachates; magnetic fields; palladium; porous media
Abstract:
... Quick and precise recovery of palladium (Pd) from electronic waste remains a serious task, owing to the strong acid and complexity of chemical compounds in leachate. Here, bioinspired construction of magnetic nano stirring rod with radially aligned dual mesopores and abundant 8-aminoquinoline (MNSR-DM-AQ) is proposed for selective and rapid extraction of Pd(II) from highly acidic sample solutions. ...
DOI:
10.1016/j.jhazmat.2022.129917

2. Immunochromatographic Assay based on Sc-TCPP 3D MOF for the rapid detection of imidacloprid in food samples

Author:
Ying Wang; Meng Zhang; Tong Bu; Feier Bai; Shuang Zhao; Yuanyuan Cao; Kunyi He; Haiyu Wu; Jia Xi; Li Wang
Source:
Food chemistry 2023 v.401 pp. 134131
ISSN:
0308-8146
Subject:
biocompatibility; carrots; chelation; coordination polymers; corn; credit; detection limit; food chemistry; imidacloprid; immunoaffinity chromatography; ligands; millets; nanomaterials; porphyrins; rapid methods
Abstract:
... In this work, a highly sensitive immunochromatographic test strip (ITS) based on Scandium-Tetrakis (4-carboxyphenyl) porphyrin (TCPP) metal–organic framework nanocubes (ScTMNs) was developed for ultrasensitive and facile visual determination of imidacloprid (IDP). TCPP as the porphyrin-based planar ligand and Sc³⁺ as the metal center were applied to form the ScTMNs via coordination chelation. Givi ...
DOI:
10.1016/j.foodchem.2022.134131

3. Self-cleaning and regenerable nano zero-valent iron modified PCN-224 heterojunction for photo-enhanced radioactive waste reduction

Author:
Jing Zhao; Chaoyi Lyu; Rui Zhang; Yao Han; Yundi Wu; Xilong Wu
Source:
Journal of hazardous materials 2023 v.442 pp. 130018
ISSN:
0304-3894
Subject:
adsorption; bioaccumulation; chelation; chemical reduction; coordination polymers; electron transfer; iron; liquids; nanomaterials; nuclear power; pH; photocatalysis; radioactive waste; reactive oxygen species; surface area; toxicity; uranium; waste reduction; wastewater; zirconium
Abstract:
... The expansion of large-scale nuclear power causes a substantial volume of radioactive wastewater containing uranium to be released into the environment. Because of uranium's toxicity and bioaccumulation, it is critical to develop the efficient and sustainable materials for selective removal of uranium (VI). Herein, a regenerable anti-biofouling nano zero-valent iron doped porphyrinic zirconium met ...
DOI:
10.1016/j.jhazmat.2022.130018

4. A critical review on pineapple (Ananas comosus) wastes for water treatment, challenges and future prospects towards circular economy

Author:
Thuan Van Tran; Duyen Thi Cam Nguyen; Thuy Thi Thanh Nguyen; Dai Hai Nguyen; Mansur Alhassan; A.A. Jalil; Walid Nabgan; Taeyoon Lee
Source:
Science of the total environment 2023 v.856 pp. 158817
ISSN:
0048-9697
Subject:
Ananas comosus; adsorbents; adsorption; chelation; circular economy; electrostatic interactions; environment; fruits; ion exchange; kinetics; pineapples; porosity; sorption isotherms; water treatment
Abstract:
... Each year, nearly 30 million tons of pineapple fruit are harvested for food and drinking industries, along with the release of a huge amount of pineapple wastes. Without the proper treatment, pineapple wastes can cause adverse impacts on the environment, calling for new technologies to convert them into valuable products. Here, we review the production and application of adsorbents derived from pi ...
DOI:
10.1016/j.scitotenv.2022.158817

5. 1,2-Diamines as the Amine Sources in Amidation and Rhodium-Catalyzed Asymmetric Reductive Amination Cascade Reactions

Author:
Rongrong Xie; Cungang Liu; Renwei Lin; Runchen Zhang; Haizhou Huang; Mingxin Chang
Source:
Organic letters 2022 v.24 no.31 pp. 5646-5650
ISSN:
1523-7052
Subject:
amination; chelation; diamines; ligands; rhodium
Abstract:
... The sturdy chelation of 1,2-diamines and transition-metals would retard or even interrupt the routine catalytic cycles. In the amidation and asymmetric reductive amination (ARA) cascade reactions of diamines and ketoesters, we deployed sets of additives to ensure a smooth transformation catalyzed by the complexes of rhodium and versatile and highly modular phosphoramidite-phosphine ligands. The tu ...
DOI:
10.1021/acs.orglett.2c01728

6. Accumulation and partitioning of toxic trace metal(loid)s in phytoliths of wheat grown in a multi-element contaminated soil

Author:
Linan Liu; Zhaoliang Song; Qiang Li; Rob M. Ellam; Jingchun Tang; Yangyang Wang; Binoy Sarkar; Hailong Wang
Source:
Environmental pollution 2022 v.294 pp. 118645
ISSN:
0269-7491
Subject:
arsenic; cadmium; chelation; copper; coprecipitation; crop quality; cropland; homeostasis; human health; lead; phytoliths; pollution; silica; silicon; toxicity; wheat; zinc
Abstract:
... Cropland contamination by toxic trace metal (loid)s (TTMs) has attracted increasing attention due to the serious consequential threat to crop quality and human health. Mitigation of plant TTM stress by silica amendment has been proposed recently. However, the relationship between the siliceous structure of phytoliths and TTMs in plants, and the environmental implications of phytolith-occluded trac ...
DOI:
10.1016/j.envpol.2021.118645

7. Adsorption of copper (II) and cadmium (II) ions by in situ doped nano-calcium carbonate high-intensity chitin hydrogels

Author:
Detian Dou; Donglai Wei; Xin Guan; Zhenjiang Liang; Lihong Lan; Xiongdiao Lan; Pengru Liu; Huiqun Mo; Ping Lan
Source:
Journal of hazardous materials 2022 v.423 pp. 127137
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; cadmium; calcium carbonate; chelation; chitin; composite materials; copper; hydrogels; macropores; models; nitrogen; oxygen; pH; sorption isotherms; temperature
Abstract:
... Most natural polymers exhibit limited functional groups, which is not favourable for the adsorption of various ions and their utilisation. To overcome this drawback, a novel in-situ-doped nano-calcium carbonate (CaCO₃) chitin hydrogel was synthesised as an efficient adsorbent for Cu (II) and Cd (II) ions. Scanning electron microscopy and Brunauer–Emmett–Teller results revealed that the synthesised ...
DOI:
10.1016/j.jhazmat.2021.127137

8. Amine-bilayer-functionalized cellulose-chitosan composite hydrogel for the efficient uptake of hazardous metal cations and catalysis in polluted water

Author:
Chirag Batukbhai Godiya; Chetan Revadekar; Jinsoo Kim; Bum Jun Park
Source:
Journal of hazardous materials 2022 v.436 pp. 129112
ISSN:
0304-3894
Subject:
X-radiation; adsorbents; adsorption; aminophenols; biocatalysts; catalytic activity; cellulose; chelation; copper; copper nanoparticles; desorption; heavy metals; hydrogels; nickel; p-nitrophenol; polyethyleneimine; remediation; water pollution; zinc
Abstract:
... Herein, we represent a novel ecofriendly bilayer-amine group incorporated microcrystalline cellulose (MCC)/chitosan (CS) hydrogel, fabricated via integrating polydopamine (PDA) and polyethyleneimine (PEI) for reliable and effective extraction of copper (Cu²⁺), zinc (Zn²⁺), and nickel (Ni²⁺) ions from effluents. Owing to abundant adsorptive sites, the MCC-PDA-PEI/CS-PDA-PEI hydrogel showed excellen ...
DOI:
10.1016/j.jhazmat.2022.129112

9. Antioxidant Activity of Fucoidan Modified with Gallic Acid Using the Redox Method

Author:
Keylla Dayanne Coelho Marinho de Melo; Lucas dos Santos Lisboa; Moacir Fernandes Queiroz; Weslley Souza Paiva; Ana Carolina Luchiari; Rafael Barros Gomes Camara; Leandro Silva Costa; Hugo Alexandre Oliveira Rocha
Source:
Marine drugs 2022 v.20 no.8 pp. -
ISSN:
1660-3397
Subject:
Danio rerio; adjuvants; antioxidant activity; caspase-3; caspase-9; cell viability; chelation; fucoidan; gallic acid; osteoblasts; oxidative stress; superoxide anion
Abstract:
... Antioxidant compounds decrease the amount of intracellular reactive oxygen species (ROS) and, consequently, reduce the deleterious effects of ROS in osteoblasts. Here, we modified a 21 kDa fucoidan (FucA) with gallic acid (GA) using the redox method, to potentiate its antioxidant/protective capacity on pre-osteoblast-like cells (MC3T3) against oxidative stress. The 20 kDa FucA-GA contains 37 ± 3.0 ...
DOI:
10.3390/md20080490

10. Antioxidant capacity of Myrciaria cauliflora seed extracts by spectrophotometric, biochemical, and electrochemical methods and its protective effect against oxidative damage in erythrocytes

Author:
Ana Carolina Mendes Hacke; Taynara Pacheco Valério; Mateus Flórido Cubo; Dhésmon Lima; Christiana Andrade Pessôa; José Carlos Rebuglio Vellosa; Romaiana Picada Pereira
Source:
Journal of food biochemistry 2022 v.46 no.9 pp. e14222
ISSN:
0145-8884
Subject:
Plinia cauliflora; antioxidant activity; byproducts; chelation; electrochemistry; erythrocytes; food additives; fruits; humans; lipid peroxidation; oxidative stress; phospholipids; protective effect; reactive oxygen species; wastes
Abstract:
... This study aimed to investigate the antioxidant activity of extracts obtained from jabuticaba (Myrciaria cauliflora) seeds. Ethanolic (ETJS), methanolic (MEJS), aqueous (AQJS), and propanone (PRJS) extracts was assessed by measuring spectrophotometrically their ability to scavenge DPPH·, ABTS·⁺, HOCl, and O₂·⁻ radicals. Electrochemical methods were employed, and the obtained data presented a good ...
DOI:
10.1111/jfbc.14222

11. Antioxidant peptides derived from potato, seaweed, microbial and spinach proteins: Oxidative stability of 5% fish oil-in-water emulsions

Author:
Betül Yesiltas; Pedro J. García-Moreno; Simon Gregersen; Tobias H. Olsen; Nykola C. Jones; Søren V. Hoffmann; Paolo Marcatili; Michael T. Overgaard; Egon B. Hansen; Charlotte Jacobsen
Source:
Food chemistry 2022 v.385 pp. 132699
ISSN:
0308-8146
Subject:
aqueous solutions; bioinformatics; chelation; circular dichroism spectroscopy; emulsions; fish; food chemistry; hydroperoxides; isoelectric point; lipid peroxidation; macroalgae; oxidative stability; peptides; polysorbates; potatoes; prediction; proteomics; spinach
Abstract:
... In this study, we used a combination of quantitative proteomics and bioinformatic prediction for identifying novel antioxidant peptides. Thirty-five peptides from potato, seaweed, microbial, and spinach proteins were investigated. Based on high DPPH radical scavenging activity (IC₅₀ ≤ 16 mg/mL), metal chelation activity, isoelectric point, and high relative abundance in the parent protein sources, ...
DOI:
10.1016/j.foodchem.2022.132699

12. Application of functionalized layered double hydroxides for heavy metal removal: A review

Author:
Xian Guan; Xingzhong Yuan; Yanlan Zhao; Hou Wang; Hui Wang; Jing Bai; Ying Li
Source:
Science of the total environment 2022 v.838 pp. 155693
ISSN:
0048-9697
Subject:
absorption; chelation; environment; heavy metals; ion exchange; liquids; soil; solvation; surface area; toxicity; wastewater
Abstract:
... Layered double hydroxides (LDHs) are ionic laminar composites composed of positively charged brucite-like layers with an interlayered region containing charged compensating anions and solvation molecules. Such functional LDHs materials present a strong potential for heavy metal treatment especially for wastewater and soil, due to the large surface area and layered structure. This paper started wit ...
DOI:
10.1016/j.scitotenv.2022.155693

13. Application of the photothermal-responsive gelatin-based microspheres for controlled release of imidacloprid by helix-coil structural transition mechanism

Author:
Meng Mei; Bo Bai; Dan Zheng; Qizhao Wang; Qian Zhang
Source:
Colloids and surfaces 2022 v.652 pp. 129792
ISSN:
0927-7757
Subject:
adsorbents; adsorption; agrochemicals; biochar; calcium; chelation; corn; gelatin; hydrogels; imidacloprid; irradiation; lighting; microparticles; microstructure; sodium alginate; solar energy; thermal energy; yeasts
Abstract:
... Intelligent controlled release systems (ICRS) are recognized as a feasible and economical way for the highly efficient utilization of agrochemicals. In this work, we developed an intelligent photothermal-responsively controlled-release pesticide particle (IYGCP) based on imidacloprid (IMI, a model pesticide), yeast biochar (YB, adsorbent and photothermal material), gelatin (GE, temperature-respons ...
DOI:
10.1016/j.colsurfa.2022.129792

14. Atrial Fibrillation in β-Thalassemia: Overview of Mechanism, Significance and Clinical Management

Author:
Michele Malagù; Federico Marchini; Alessio Fiorio; Paolo Sirugo; Stefano Clò; Elisa Mari; Maria Rita Gamberini; Claudio Rapezzi; Matteo Bertini
Source:
Biology 2022 v.11 no.1 pp. -
ISSN:
2079-7737
Subject:
atrial fibrillation; chelation; iron overload; pathophysiology; prognosis; risk; thalassemia; therapeutics
Abstract:
... Thalassemia is an inherited blood disorder with worldwide distribution. Transfusion and chelation therapy have radically improved the prognosis of β-thalassemic patients in the developed world, but this has led to the development of new chronic cardiac complications like atrial fibrillation (AF). Prevalence of AF in patients with β-thalassemia is higher than in the general population, ranging from ...
DOI:
10.3390/biology11010148

15. Atroposelective Synthesis of Axially Chiral C2-Arylindoles via Rhodium-Catalyzed Asymmetric C–H Bond Insertion

Author:
Junheng Liu; Qiongya Li; Ying Shao; Jiangtao Sun
Source:
Organic letters 2022 v.24 no.25 pp. 4670-4674
ISSN:
1523-7052
Subject:
chelation; indoles; stereoselective synthesis
Abstract:
... A highly efficient rhodium-catalyzed formal C–H insertion reaction between indoles and 1-diazonaphthoquinones has been established, providing a novel protocol for the atroposelective synthesis of axially chiral C2-arylindoles (up to 99:1 er) under mild reaction conditions. Typically, only 1 mol % of Rh₂(S-PTTL)₄ is used and the chelation group is not needed for this conversion. ...
DOI:
10.1021/acs.orglett.2c01818

16. BACH1 Expression Is Promoted by Tank Binding Kinase 1 (TBK1) in Pancreatic Cancer Cells to Increase Iron and Reduce the Expression of E-Cadherin

Author:
Liang Liu; Mitsuyo Matsumoto; Miki Matsui-Watanabe; Kyoko Ochiai; Bert K. K. Callens; Long Chi Nguyen; Yushi Kozuki; Miho Tanaka; Hironari Nishizawa; Kazuhiko Igarashi
Source:
Antioxidants 2022 v.11 no.8 pp. -
ISSN:
2076-3921
Subject:
adenocarcinoma; cadherins; chelation; ferritin; flow cytometry; gene expression; heme; homeostasis; humans; iron; metabolism; metastasis; neoplasm cells; pancreatic neoplasms; reactive oxygen species
Abstract:
... BTB and CNC homology 1 (BACH1) represses the expression of genes involved in the metabolism of iron, heme and reactive oxygen species and promotes metastasis of various cancers including pancreatic ductal adenocarcinoma (PDAC). However, it is not clear how BACH1 is regulated in PDAC cells. Knockdown of Tank binding kinase 1 (TBK1) led to reductions of BACH1 mRNA and protein amounts in AsPC−1 human ...
DOI:
10.3390/antiox11081460

17. Bimetallic diatomic nanoclusters with longitudinal Fe–O–Fe units and latitudinal Cu–S–Fe–S–Cu units as efficient ORR active sites

Author:
Hong Li; Xinxin Shu; Haolong Xi; Zhengxing Lv; He Tian; Jintao Zhang; Haibing Xia
Source:
Journal of materials chemistry A 2022 v.10 no.28 pp. 14828-14837
ISSN:
2050-7496
Subject:
active sites; adsorption; chelation; desorption; electrochemistry; polyaniline; tannins
Abstract:
... In this work, Fe–Cu diatomic nanoclusters (Fe–Cu DA-NCs) with sizes of 0.5–2.5 nm loaded in porous carbons (denoted as Fe–Cu DA-NC/C) were successfully prepared by virtue of the strong chelation interaction between tannic acid (TA) and metal ions (Cu²⁺ and Fe³⁺) as well as the doping interaction between metal ions and imino groups from polyaniline (PANI) chains. A detailed analysis revealed that F ...
DOI:
10.1039/d2ta04368h

18. Bio-based mesh-like pesticide carriers via copper ions chelation for prolonging pesticide retention and flush resistance on foliage

Author:
Chaoqun You; Like Ning; Yuxin Jia; Peng Xu; Jinchun Lu; Chaobo Huang; Fei Wang
Source:
Industrial crops and products 2022 v.183 pp. 114938
ISSN:
0926-6690
Subject:
antifungal properties; biosafety; cellulose; chelation; copper; fenitrothion; leaves; nanocrystals; precision agriculture
Abstract:
... In the past few years, the development of smart pesticide-controlled release systems has emerged as an important strategy in modern precision agriculture, particularly to increase retention efficiency and improve the utilization of pesticides. In order to achieve effective retention of pesticide spraying formulations on foliage surfaces, the present study aimed to develop a novel bio‐based mesh‐li ...
DOI:
10.1016/j.indcrop.2022.114938

19. Bioaccumulation of lead (Pb) and its effects on human: A review

Author:
M Samuel Collin; Senthil kumar Venkataraman; Naveensubramaniam Vijayakumar; V Kanimozhi; S Muhammad Arbaaz; R G Sibiya Stacey; Jogannagari Anusha; Rajan Choudhary; Vladislav Lvov; Gabriel Ibrahin Tovar; Fedor Senatov; Sivasankar Koppala; Sasikumar Swamiappan
Source:
Journal of hazardous materials advances 2022 pp. 100094
ISSN:
2772-4166
Subject:
absorption; bioaccumulation; bioavailability; blood; bone resorption; brain; chelation; half life; heavy metals; humans; kidneys; lead; oxidative stress; pregnancy; renal failure; therapeutics; toxicity
Abstract:
... Lead is a prevalent heavy metal that pollutes the environment and accumulates in the human body via absorption, bioavailability, bioconcentration, and biomagnification disrupts the neurological, skeletal, reproductive, hematopoietic, renal, and cardiovascular systems. Lead's distinctive physical and chemical characteristics make it ideal for a variety of uses. It has been linked to human activitie ...
DOI:
10.1016/j.hazadv.2022.100094

20. Bioactive potential and RP-HPLC detection of phenolics and alkaloids (lycorine and galanthamine) from ultrasonic-assisted extracts of Crinum roots

Author:
M.M. Lekhak; S.B. Patel; S.S. Otari; U.M. Lekhak; S.G. Ghane
Source:
South African journal of botany 2022 v.149 pp. 923-936
ISSN:
0254-6299
Subject:
Crinum; acetylcholinesterase; alpha-amylase; chelation; lycorine
Abstract:
... In this study, ultrasonic-assisted root extracts (methanolic and aqueous) of 16 Crinum genotypes were investigated for their antioxidants, phytochemicals and alkaloids (lycorine and galanthamine). The maximum TPC was recorded in methanolic extract of CAF1 (10.871 ± 0.2 mg TAE/g DW) and the least in CA (5.291 ± 0.1 mg TAE/g DW). TFC ranged from 0.446 ± 0.03 (CA) to 1.051 ± 0.07 mg CE/g DW (CMOR) fo ...
DOI:
10.1016/j.sajb.2021.07.024

21. Biodegradation and effects of EDDS and NTA on Zn in soil solutions during phytoextraction by alfalfa in soils with three Zn levels

Author:
Xiaolin Wang; Marcella Fernandes de Souza; Haichao Li; Jing Qiu; Yong Sik Ok; Erik Meers
Source:
Chemosphere 2022 v.292 pp. 133519
ISSN:
0045-6535
Subject:
Medicago sativa; alfalfa; application timing; biodegradability; biodegradation; cations; chelation; exposure duration; half life; nitrilotriacetic acid; phytoaccumulation; soil solution; solubilization
Abstract:
... In chelator-enhanced Zn phytoremediation studies, it is crucial to understand how the degradable chelators and the competition from other ions influence the concentration of Zn in soil solutions. This study investigated the biodegradability of two chelators (EDDS: Ethylenediamine-N,N′-disuccinic acid, and NTA: Nitrilotriacetic acid) and their effects on the Zn concentration in the soil solution du ...
DOI:
10.1016/j.chemosphere.2022.133519

22. Biomass-based carbon microspheres for removing heavy metals from the environment: a review

Author:
Y. Fang; L. Liu; H. Xiang; Y. Wang; X. Sun
Source:
Materials today sustainability 2022 v.18 pp. 100136
ISSN:
2589-2347
Subject:
adsorption; biomass; carbon; chelation; electrostatic interactions; heavy metals; hot water treatment; ion exchange; microparticles; redox reactions; surface area; uranium; water purification
Abstract:
... Heavy-metal residues in the environment that harm organisms can be removed using various methods. Carbon microsphere materials can be effectively used for heavy metal adsorption because of their large specific surface area, rich pore structure, and excellent physical and chemical stability. In this review, we focus on water purification by heavy metal removal using carbon microsphere materials. Fi ...
DOI:
10.1016/j.mtsust.2022.100136

23. Brassinosteroid Supplementation Alleviates Chromium Toxicity in Soybean (Glycine max L.) via Reducing Its Translocation

Author:
Farwa Basit; Javaid Akhter Bhat; Jin Hu; Prashant Kaushik; Ajaz Ahmad; Yajing Guan; Parvaiz Ahmad
Source:
Plants 2022 v.11 no.17 pp. -
ISSN:
2223-7747
Subject:
Glycine max; biomarkers; biomass; brassinosteroids; chelation; chromium; cultivars; electrolyte leakage; foliar spraying; nutrient uptake; photosynthesis; phytotoxicity; plant growth; protective effect; reactive oxygen species; seed germination; soil; soybeans; stress tolerance
Abstract:
... Chromium (Cr) phytotoxicity severely inhibits plant growth and development which makes it a prerequisite to developing techniques that prevent Cr accumulation in food chains. However, little is explored related to the protective role of brassinosteroids (BRs) against Cr-induced stress in soybean plants. Herein, the morpho-physiological, biochemical, and molecular responses of soybean cultivars wit ...
DOI:
10.3390/plants11172292

24. CRISPR/Cas9 technology as an innovative approach to enhancing the phytoremediation: Concepts and implications

Author:
Misbah Naz; Adalberto Benavides-Mendoza; Muhammad Tariq; Jianyu Zhou; Jiahao Wang; Shanshan Qi; Zhicong Dai; Daolin Du
Source:
Journal of environmental management 2022 v.323 pp. 116296
ISSN:
0301-4797
Subject:
CRISPR-Cas systems; absorption; biotechnology; cations; chelation; ecosystems; genome; nucleases; phytoremediation
Abstract:
... Phytoremediation is currently an active field of research focusing chiefly on identifying and characterizing novel and high chelation action super-accumulators. In the last few years, molecular tools have been widely exploited to understand better metal absorption, translocation, cation, and tolerance mechanisms in plants. Recently more advanced CRISPR-Cas9 genome engineering technology is also em ...
DOI:
10.1016/j.jenvman.2022.116296

25. Cadmium adsorption in leaf cell walls prevents redistribution to silique in Arabidopsis thaliana ecotypes Jm-1 and Kyo-0

Author:
Yan Xiao; Dong Liu; Li Li; Zhenhua Zhang; Jin-Song Luo
Source:
Environmental and experimental botany 2022 v.194 pp. 104690
ISSN:
0098-8472
Subject:
Arabidopsis thaliana; adsorption; cadmium; chelation; cyclohexanes; ecotypes; hemicellulose; leaves; pectinesterase; pectins; phloem; siliques
Abstract:
... Cadmium (Cd) redistribution from leaf to silique determined seed Cd content in Arabidopsis, but the control mechanism remains largely unknown. Here, we found that the Cd concentrations in the leaves, stems, and siliques of Arabidopsis thaliana (A. thaliana) ecotype Jm-1 were higher than in the ecotype Kyo-0. The Cd concentrations in the leaves’ cell walls (CW) were 39% lower in Jm-1 than in Kyo-0, ...
DOI:
10.1016/j.envexpbot.2021.104690

26. Calcium Delivery Systems Assembled using Antarctic Krill Derived Heptapeptides: Exploration of the Assembly Mechanism, In Vitro Digestion Profile, and Calcium Absorption Behavior

Author:
Na Sun; Shengjie Hu; Di Wang; Pengfei Jiang; Simin Zhang; Songyi Lin
Source:
Journal of agricultural and food chemistry 2022 v.70 no.6 pp. 2018-2028
ISSN:
1520-5118
Subject:
Euphausia superba; absorption; calcium; chelation; circular dichroism spectroscopy; digestion; digestive tract; duodenum; food chemistry; ileum; oxygen; peptides; stoichiometry
Abstract:
... A novel heptapeptide QEELISK derived from Antarctic krill was used to assemble a calcium delivery system, of which the calcium binding mechanism of QEELISK, in vitro digestion kinetics, and calcium absorption behaviors were explored. QEELISK with continuous Glu possessed higher calcium binding capacity than that of QELEISK and QAALISK. Ca²⁺ bound to the carboxyl oxygen of Glu at position 3 of the ...
DOI:
10.1021/acs.jafc.1c06951

27. Changes in Flavor- and Aroma-Related Fermentation Metabolites and Antioxidant Activity of Glutinous Rice Wine Supplemented with Chinese Chestnut (Castanea mollissima Blume)

Author:
Jing Zou; Yinan Ge; Yue Zhang; Min Ding; Kuo Li; Yinglan Lin; Xuedong Chang; Fei Cao; Yunkai Qian
Source:
Fermentation 2022 v.8 no.6 pp. -
ISSN:
2311-5637
Subject:
Castanea mollissima; alcohols; antioxidant activity; chelation; ethyl carbamate; fermentation; flavonoids; flavor; free radicals; glutinous rice; metabolites; rice wines; China
Abstract:
... Traditional glutinous rice wine (TGRW) has been fermented in China for over 9000 years. Recently, an innovative regional variation of TGRW, chestnut rice wine, banli mijiu (BLMJ), was developed by adding Chinese chestnut (Castanea mollissima Blume) into the fermentation brew. The objective of this study was to characterize the effects of chestnut on the nutritional, aromatic, and antioxidant prope ...
DOI:
10.3390/fermentation8060266

28. Characterization of a synthetic zinc‐chelating peptide from sea cucumber (Stichopus japonicus) and its gastrointestinal digestion and absorption in vitro

Author:
Zixu Wang; Jiatong Sun; Xiaoyu Ma; Xiaoyang Liu; Fawen Yin; Deyang Li; Yoshimasa Nakamura; Chenxu Yu; Dayong Zhou
Source:
Journal of the science of food and agriculture 2022 v.102 no.11 pp. 4542-4550
ISSN:
0022-5142
Subject:
Apostichopus japonicus; absorption; agriculture; bioavailability; calorimetry; chelation; digestion; fluorescence; heat production; humans; intestines; models; rats; synthetic peptides; titration; zinc
Abstract:
... BACKGROUND: Zinc absorption in intestinal system could be strongly affected by the gastrointestinal digestion and absorption of zinc‐chelating peptides serving as zinc carriers. In this study, a novel zinc‐chelating sea cucumber synthetic peptide (SCSP) was synthesized to estimate its gastrointestinal digestion and promotive effect of zinc absorption in vitro. RESULTS: Analysis of isothermal titra ...
DOI:
10.1002/jsfa.11811

29. Chelating Cu-N within Cu+-incorporated MIL-101 (Cr)-NH2 framework for enhanced CO adsorption and CO/CO2 selectivity

Author:
The Ky Vo; Jinsoo Kim; Duong Tuan Quang
Source:
Colloids and surfaces 2022 v.635 pp. 128076
ISSN:
0927-7757
Subject:
adsorbents; adsorption; carbon dioxide; chelation; formates; humidity; temperature
Abstract:
... The development of π-complexation adsorbents with Cu(I) having high CO adsorption capacity, high selectivity, large working capacity, and good stability is still very challenging up to now. In this work, π-complexation adsorbent with Cu⁺ was fabricated by reducing Cu²⁺ to Cu⁺ within amino-functionalized MIL-101 (Cr) framework by employing formate (HCOO⁻) at low temperature. The obtained results in ...
DOI:
10.1016/j.colsurfa.2021.128076

30. Chelating effect between uranyl and pyridine N containing covalent organic frameworks: A combined experimental and DFT approach

Author:
Ruoxuan Guo; Yang Liu; Yingzhong Huo; Anrui Zhang; Jiahui Hong; Yuejie Ai
Source:
Journal of colloid and interface science 2022 v.606 pp. 1617-1626
ISSN:
0021-9797
Subject:
adsorbents; adsorption; chelation; crystal structure; density functional theory; heavy metals; pyridines; remediation; uranyl ions
Abstract:
... Covalent organic frameworks (COFs) are promising adsorbents for removing heavy metal ions, and have high crystallinity, a porous structure, and conjugated stability. N-containing functional groups are known to have great affinity for uranyl ions. In this work, to explore the peculiarity of the pyridine N structure as an efficient adsorbent, we chose 2,2′-dipyridine-5,5′-diamine (Bpy) and pyridine- ...
DOI:
10.1016/j.jcis.2021.08.118

31. Chelation-activated ultralong room-temperature phosphorescence and thermo-/excitation-dependent persistent luminescence

Author:
Siqin Wu; Bo Zhou; Xiaoyu Fang; Dongpeng Yan
Source:
Chemical communications 2022 v.58 no.41 pp. 6136-6139
ISSN:
1364-548X
Subject:
ambient temperature; cadmium; chelation; phosphorescence
Abstract:
... Multidentate chelation effect can be used to activate the ultralong room-temperature phosphorescence and stabilize the triplet excitons. The as-synthesized cadmium(ii) based complexes further exhibit thermo- and excitation-dependent persistent luminescence as potential for optical logic gate. ...
DOI:
10.1039/d2cc01485h

32. Chemistry solutions to facilitate nanopore detection and analysis

Author:
Liang Wang; Han Wang; Xiaohan Chen; Shuo Zhou; Yunjiao Wang; Xiyun Guan
Source:
Biosensors & bioelectronics 2022 v.213 pp. 114448
ISSN:
0956-5663
Subject:
biosensors; chelation; nanopores; titration
Abstract:
... Characteristic ionic current modulations will be produced in a single molecule manner during the communication of individual molecules with a nanopore. Hence, the information regarding the length, composition, and structure of a molecule can be extracted from deciphering the electrical message. However, until now, achieving a satisfactory resolution for observation and quantification of a target a ...
DOI:
10.1016/j.bios.2022.114448

33. Chitosan augments bioactive properties and drought resilience in drought-induced red kidney beans

Author:
Manoj B.S.; Moni Gupta; M Iqbal Jeelani; Sachin Gupta
Source:
Food research international 2022 v.159 pp. 111597
ISSN:
0963-9969
Subject:
Phaseolus vulgaris; antioxidant activity; chelation; chitosan; drought; ferulic acid; foliar spraying; food research; free radicals; gallic acid; irrigation; kidney beans; leaves; p-coumaric acid; phenol; salicylic acid; water stress
Abstract:
... Application of 0.25% chitosan during seed priming or its foliage spray on Phaseolus vulgaris L. grown under restricted irrigations was assessed for its role in the enhancement of bioactive properties like antioxidant potential of dry seed. Seven hydroxycinnamic acid and eleven hydroxybenzoic acid derivatives were identified and quantified in seeds collected from treated plants using LC-MS/MS. The ...
DOI:
10.1016/j.foodres.2022.111597

34. Chitosan functionalized with N,N-(2-aminoethyl)pyridinedicarboxamide for selective adsorption of gold ions from wastewater

Author:
Shuai Wang; Hao Wang; Jiali Tang; Yingbi Chen; Shixing Wang; Libo Zhang
Source:
International journal of biological macromolecules 2022 v.194 pp. 781-789
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; chelation; chitosan; endothermy; energy-dispersive X-ray analysis; gold; nuclear magnetic resonance spectroscopy; pH; sorption isotherms; temperature; wastewater; zeta potential
Abstract:
... The recovery of gold from wastewater has always been a research hotspot. Here, a novel chitosan-based adsorbent (CS-DPDM) was successfully synthesized by functionalizing chitosan with (N, N-(2-aminoethyl))-2,6-pyridinedicarboxamide. The adsorbent was analyzed by fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (¹H NMR), scanning electron microscope (SEM), en ...
DOI:
10.1016/j.ijbiomac.2021.11.125

35. Comparative assessment of antioxidant and immunomodulatory properties of skimmed milk protein hydrolysates and their incorporation in beverage mix

Author:
Pavan Kumar Prakash; Sachin M Eligar; Manikumar Prakruthi; Aswathanarayana setty Jyothi Lakshmi
Source:
Journal of the science of food and agriculture 2022 v.102 no.14 pp. 6414-6422
ISSN:
0022-5142
Subject:
2,2-diphenyl-1-picrylhydrazyl; agriculture; antioxidants; ass milk; beverages; bioactive properties; buffalo milk; buffaloes; casein; cell lines; chelation; colostrum; health promotion; immunostimulants; liquid chromatography; macrophages; mice; nitric oxide; phagocytosis; polyacrylamide gel electrophoresis; protein hydrolysates; skim milk; subtilisin; whey; whey protein
Abstract:
... BACKGROUND: Milk‐derived protein hydrolysates have generated a great deal of interest recently due to their numerous beneficial health effects. However, there are few comparative studies on protein hydrolysates from different dairy species, their production, characterization, and bioactivity. In the present study, skimmed milk from both major and minor dairy species was hydrolyzed with alcalase, a ...
DOI:
10.1002/jsfa.12007

36. Comparative efficacy of silibinin and nano-silibinin on lead poisoning in Male Wistar rats

Author:
Mojdeh Mohammadi; Saba Ariafar; Elaheh Talebi-Ghane; Saeed Afzali
Source:
Toxicology 2022 v.475 pp. 153242
ISSN:
0300-483X
Subject:
antioxidant activity; antioxidants; blood; catalase; chelation; glutathione; histopathology; lead; lipid peroxidation; liver; males; models; neurotoxins; nitric oxide; oxidative stress; rats; silymarin; superoxide dismutase; thiols; toxicity; toxicology; weight loss
Abstract:
... Lead (Pb) is an environmental neurotoxin that can lead to toxicity. It has shown that tissues can be exposed to oxidative stress in lead poisoning. Since silymarin is a natural agent with antioxidant effects, this study aimed to investigate the antioxidant and chelation effects of silibinin and nano-silibinin on the oxidative stress status in lead-poisoned rats. Sixty male Wistar rats randomly div ...
DOI:
10.1016/j.tox.2022.153242

37. Copper-Binding Properties of Polyethylenimine–Silica Nanocomposite Particles

Author:
Alexandra Semenova; Luke W. Giles; Mark Louis P. Vidallon; Bart Follink; Paul L. Brown; Rico F. Tabor
Source:
Langmuir 2022 v.38 no.34 pp. 10585-10600
ISSN:
1520-5827
Subject:
adsorption; chelation; copper; microgels; nanocomposites; nanoparticles; nitric acid; pollution; polyethyleneimine; silica; solubility
Abstract:
... Increasing demand for copper resources, accompanied by increasing pollution, has resulted in an urgent need for effective materials for copper binding and extraction. Polyethylenimine (PEI) is one of the strongest copper-chelating agents but is not suitable directly (as is) for most applications due to its high solubility in water. PEI-based composite materials show potential as efficient and prac ...
DOI:
10.1021/acs.langmuir.2c01457

38. Corrosion inhibition of hybrid H2QS/CaO additives for AA5052 alloy in alkaline solution

Author:
Junyu Yang; Daquan Zhang; Lixin Gao; Chunping Li
Source:
Journal of chemical technology and biotechnology 2022 v.97 no.11 pp. 3065-3075
ISSN:
0268-2575
Subject:
alloys; anodes; batteries; biotechnology; calcium; calcium oxide; chelation; composite films; corrosion; electrochemistry; electrostatic interactions; fluorescence; hybrids; hydrogen production; quinoline; synergism
Abstract:
... BACKGROUND: The parasitic H₂ evolution reaction (HER) is the main problem preventing the development of the commercial Al‐air battery (AAB) in alkaline solution. The purpose of this study is to investigate a hybrid additive for alkaline AAB. The inhibition effect of the additives for HER is studied by hydrogen evolution test, electrochemical measurements, and scanning electron microscope (SEM). Th ...
DOI:
10.1002/jctb.7171

39. Cotton dyeing performance enhancing mechanism of mangiferin enriched bio-waste by transition metals chelation

Author:
M. Tauhidul Islam; Md Luthfar Rahman Liman; Manindra Nath Roy; Md. Milon Hossain; Md. Reazuddin Repon; Md. Abdullah Al Mamun
Source:
The journal of the Textile Institute 2022 v.113 no.4 pp. 567-579
ISSN:
1754-2340
Subject:
absorption; chelation; color; colorimetry; cotton; cotton fabric; dyeing; dyes; electrolytes; hydrogen; mangoes; quercetin; saponins; seeds; wastes
Abstract:
... This study reported a sustainable and facile coloration approach of cotton fabric by exploiting mangiferin enriched mango seed kernel bio-waste. The extract principally contains mangiferin and different polyphenolic chromophores such as hydrolysable tannin, flavonoids (quercetin), betacyanin and saponin which were confirmed by phytochemical screening. The optimum conditions for dyeing were found a ...
DOI:
10.1080/00405000.2021.1892337

40. Cr-Based MOF for Efficient Adsorption of Au at Low Concentrations

Author:
Baihui Wang; Yingnan Ma; Weifeng Xu; Kewen Tang
Source:
Langmuir 2022 v.38 no.29 pp. 8954-8963
ISSN:
1520-5827
Subject:
adsorbents; adsorption; chelation; electronic wastes; gold; leachates; ligands; liquids; sewage; thermodynamics
Abstract:
... The efficient enrichment and selection of Au are crucial for gold recovery. The adsorption technology is considered to have potential due to the advantages of operation simplicity and green processability. Nevertheless, the poor Au selectivity at low concentrations in complex solutions limits the further application of the adsorption technology. In this work, a novel Cr-based MOF adsorbent was suc ...
DOI:
10.1021/acs.langmuir.2c01137

41. Critical Review of Bioadsorption on Modified Cellulose and Removal of Divalent Heavy Metals (Cd, Pb, and Cu)

Author:
Jatinder Kaur; Parbati Sengupta; Samrat Mukhopadhyay
Source:
Industrial & engineering chemistry process design and development 2022 v.61 no.5 pp. 1921-1954
ISSN:
1520-5045
Subject:
adsorption; aerogels; biodegradability; biosorbents; cellulose; chelation; cost effectiveness; heavy metals; hydrogels; hydrophilicity; ion exchange; nanocomposites; nanocrystals; nanofibers; pH; porosity; process design; remediation; soil; strength (mechanics); surface area; temperature; water pollution
Abstract:
... Heavy metal contamination in soil and water has become a serious threat to all forms of life. Finding a sustainable remediation method is the prime concern of researchers worldwide. In this quest, cellulose has emerged as a biocompatible, biodegradable, renewable, tunable, and cost-effective bioadsorbent for heavy metal removal from polluted water. Cellulose is rich in hydroxyl groups which can be ...
DOI:
10.1021/acs.iecr.1c04583

42. Cultivar-biased regulation of HSFA7 and HSFB4a govern high-temperature tolerance in tomato

Author:
Sombir Rao; Jaishri Rubina Das; Sonia Balyan; Radhika Verma; Saloni Mathur
Source:
Planta 2022 v.255 no.2 pp. 31
ISSN:
0032-0935
Subject:
chelation; cultivars; genes; heat stress; heat tolerance; microRNA; promoter regions; stress tolerance; tomatoes; transcription (genetics)
Abstract:
... MAIN CONCLUSION: Cultivar-biased regulation of HSFB4a and HSFA7 mediates heat stress tolerance/sensitivity in tomato. Reduced HSFB4a repressor levels and enhanced HSFA7 activator levels govern thermo-tolerance in tolerant cultivars. Heat shock factors (HSFs) are at the core of heat stress (HS) response in plants. However, the contribution of HSFs governing the inherent thermo-tolerance mechanism i ...
DOI:
10.1007/s00425-021-03813-y

43. Degradation of lignocellulosic matrix of oilseed cakes by solid‐state fermentation: fungi screening for enzymes production and antioxidants release

Author:
Daniel Sousa; José M Salgado; Maria Cambra‐López; Alberto CP Dias; Isabel Belo
Source:
Journal of the science of food and agriculture 2022 v.102 no.4 pp. 1550-1560
ISSN:
0022-5142
Subject:
Aspergillus niger; acid detergent fiber; agriculture; antioxidant activity; bioprocessing; chelation; endo-1,4-beta-glucanase; enzyme activity; feeds; fungi; lignocellulose; neutral detergent fiber; nutritive value; oilseed cakes; oilseeds; proteinases; solid state fermentation; superoxide anion; vegetables; xylanases
Abstract:
... BACKGROUND: Vegetable oils are yearly produced in large amounts generating solid by‐products, the oilseed cake (OC). OCs are lignocellulosic materials that have been used for animal feed with some limitations due to high fibre content from the plant cell walls. Biotechnological processes can help to overcome these limitations and contribute to up‐grading such by‐products, enhancing their nutrition ...
DOI:
10.1002/jsfa.11490

44. Determination of transition metal ions in fossil fuel associated wastewaters using chelation ion chromatography

Author:
Joshua D. Miller; Mengling Y. Stuckman; Nicholas Means; Christina Lopano; J. Alexandra Hakala
Source:
Journal of chromatography 2022 v.1668 pp. 462924
ISSN:
0021-9673
Subject:
Permian period; chelating agents; chelation; chemical species; coal; drainage; energy; ion exchange chromatography; oils; shale; wastewater
Abstract:
... This study outlines the development and subsequent validation of a method using chelation ion chromatography (CIC) pretreatment followed by traditional ion chromatography (IC) and post column UV/vis detection to measure transition metals in fossil fuel wastewaters, such as oil & gas (O&G) brines and coal mine drainage (CMD) waters. Measurement of transition metals is often an important characteriz ...
DOI:
10.1016/j.chroma.2022.462924

45. Development of a POCT type insulin sensor employing anti-insulin single chain variable fragment based on faradaic electrochemical impedance spectroscopy under single frequency measurement

Author:
Mukund Khanwalker; Rinko Fujita; Jinhee Lee; Ellie Wilson; Kohei Ito; Ryutaro Asano; Kazunori Ikebukuro; Jeffrey LaBelle; Koji Sode
Source:
Biosensors & bioelectronics 2022 v.200 pp. 113901
ISSN:
0956-5663
Subject:
biosensors; chelation; dielectric spectroscopy; electrochemistry; electrodes; ferricyanides; glycemic control; insulin; molecular weight
Abstract:
... To improve glycemic control managed through insulin administration, recent studies have focused on developing hand-held point-of-care testing (POCT) electrochemical biosensors for insulin measurement. Amongst them, anti-insulin IgG-based sensors show promise in detecting insulin with high specificity and sensitivity. However, fabrication of electrochemical sensors with IgG antibodies can prove cha ...
DOI:
10.1016/j.bios.2021.113901

46. Development of an Allostery Responsive Chromatographic Method for Screening Potential Allosteric Modulator of Beta2-adrenoceptor from a Natural Product-Derived DNA-Encoded Chemical Library

Author:
Rui Tian; Jiatai Yin; Qingqing Yao; Taotao Wang; Jiahuan Chen; Qi Liang; Qian Li; Xinfeng Zhao
Source:
Analytical chemistry 2022 v.94 no.25 pp. 9048-9057
ISSN:
1520-6882
Subject:
analytical chemistry; antagonists; beta-2 adrenergic receptors; chelation; chromatography; gels; ligands; occupations; porous media; silica gel
Abstract:
... Allosteric ligands are promising drugs owing to their remote regulations of the orthosteric ligand signaling pathway. There are few allosteric ligands due to the lack of handy and efficacious method for the screening. Herein, we developed an affinity chromatographic method for allosteric ligand screening by immobilizing purified beta2 adrenoceptor (β₂-AR) onto macroporous silica gel by a two-point ...
DOI:
10.1021/acs.analchem.2c01210

47. Development of β-cyclodextrin-modified poly(chloromethyl styrene) resin for efficient adsorption of Cu(Ⅱ) and tetracycline

Author:
Jinmao Ma; Dongrun Wang; Wei Zhang; Xiangyu Wang; Xia Ma; Minsheng Liu; Quanlin Zhao; Lincheng Zhou; Sanxiang Sun; Zhengfang Ye
Source:
Process biochemistry 2022 v.121 pp. 298-311
ISSN:
1359-5113
Subject:
adsorption; chelation; hydrogen bonding; hydrophobicity; prices; styrene; tetracycline
Abstract:
... The host–guest β-cyclodextrin has attracted much attention for potential application in various fields due to its low price, natural pores, and functionality. Herein, we report a method using 1,4-phenylene diisocyanate (PPDI) to fabricate β-cyclodextrin (CD)-modified poly(chloromethyl styrene) (PCMS) resin, namely, PCMS@PPDI-CD. β-Cyclodextrin was utilized to improve the adsorption performance of ...
DOI:
10.1016/j.procbio.2022.07.017

48. Dual Closed-Loop of Catalyzed Lactate Depletion and Immune Response to Potentiate Photothermal Immunotherapy

Author:
Xiao Zheng; Ying Liu; Yiqiong Liu; Tingting Zhang; Yuge Zhao; Jie Zang; Yan Yang; Ruiqing He; Gaowei Chong; Shuangrong Ruan; Dailin Xu; Yongyong Li; Haiqing Dong
Source:
ACS applied materials & interfaces 2022 v.14 no.20 pp. 23260-23276
ISSN:
1944-8252
Subject:
T-lymphocytes; catalytic activity; chelation; encapsulation; hypoxia; immune response; immunosuppression; immunotherapy; lactate 2-monooxygenase; lactic acid; metabolism; neoplasms; oxygen; porous media
Abstract:
... Lactate accumulation in the solid tumor is highly relevant to the immunosuppressive tumor microenvironment (TME). Targeting lactate metabolism significantly enhances the efficacy of immunotherapy. However, lactate depletion by lactate oxidase (LOX) consumes oxygen and results in the aggravated hypoxia situation, counteracting the benefit of lactate depletion. Beyond the TME regulation, it is neces ...
DOI:
10.1021/acsami.2c07254

49. Dual functional sites strategies toward enhanced heavy metal remediation: Interlayer expanded Mg-Al layered double hydroxide by intercalation with L-cysteine

Author:
Danyang Wang; Eveliina Repo; Fangshu He; Xiaowei Zhang; Hongrui Xiang; Weichun Yang; Xiaobo Min; Feiping Zhao
Source:
Journal of hazardous materials 2022 v.439 pp. 129693
ISSN:
0304-3894
Subject:
adsorbents; adsorption; chelation; cost effectiveness; cysteine; economic sustainability; heavy metals; human health; remediation; toxicity; water purification
Abstract:
... The discharge of toxic heavy metals poses a serious threat to human health and environment. The existing water purification systems are lack of promising materials for rapid, efficient, and cost-efficient remediation of numerous toxic heavy metals. Herein, we report on the development of L-cysteine (Cys) intercalated Mg-Al layered double hydroxide (MgAl-LDH/Cys) with a loose lamellar porous archit ...
DOI:
10.1016/j.jhazmat.2022.129693

50. Effect of Na⁺ and K⁺ on the cucurbituril-mediated hydrolysis of a phenyl acetate

Author:
Nazar Rad; Volodymyr Sashuk
Source:
Chemical communications 2022 v.58 no.34 pp. 5249-5252
ISSN:
1364-548X
Subject:
acid hydrolysis; active sites; aqueous solutions; catalytic activity; chelation; encapsulation; hydrophobicity; models; phenylacetic acid
Abstract:
... The environment around the active site affects the catalytic activity of enzymes. Studying the cucurbit[7]uril-promoted acid hydrolysis of a cationic phenyl acetate derivative, we found that the hydrophobic cavity of the macrocycle screens the reaction centre from the positively charged neighbouring group. Moreover, the chelation of alkali metal cations with the cucurbit[7]uril portal and acetyl g ...
DOI:
10.1039/d2cc00772j