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1. Component characteristics and reactive oxygen species scavenging activity of anthocyanins from fruits of Lonicera caerulea L.

Author:
Lili Fan; Li Lin; Ye Zhang; Sining Li; Zhonghua Tang
Source:
Food chemistry 2023 v.403 pp. 134391
ISSN:
0308-8146
Subject:
Lonicera caerulea; anthocyanins; food chemistry; hydroxyl radicals; superoxide anion; China
Abstract:
... In this study, we qualitatively and quantitatively characterized anthocyanins from 61 different Lonicera caerulea L. genotypes harvested from northeast China and measured their reactive oxygen species (ROS) scavenging activity. Among the anthocyanin extracts obtained, nine anthocyanins were identified, and the anthocyanin compositions could be divided into three classes and seven subtypes accordin ...
DOI:
10.1016/j.foodchem.2022.134391

2. Effects of different thermal processing methods on bioactive components, phenolic compounds, and antioxidant activities of Qingke (highland hull-less barley)

Author:
Qingyue Hong; Guangjing Chen; Zhirong Wang; Xuhui Chen; Jianquan Kan
Source:
Food science and human wellness 2023 v.12 no.1 pp. 119-129
ISSN:
2213-4530
Subject:
antioxidant activity; barley; beta-glucans; dietary fiber; flavonoids; heat; humans; hydroxyl radicals; pentosans; principal component analysis
Abstract:
... Qingke (highland hull-less barley) is a grain replete with substantial nutrients and bioactive ingredients. In this study, we evaluated the effects of boiling (BO), steaming (ST), microwave baking (MB), far-infrared baking (FB), steam explosion (SE), and deep frying (DF) on bioactive components, phenolic compounds, and antioxidant activities of Qingke compared with the effects of traditional roast ...
DOI:
10.1016/j.fshw.2022.07.030

3. FeMo@porous carbon derived from MIL-53(Fe)@MoO3 as excellent heterogeneous electro-Fenton catalyst: Co-catalysis of Mo

Author:
Xuedong Du; Wenyang Fu; Pei Su; Qizhan Zhang; Minghua Zhou
Source:
Journal of environmental sciences (China) 2023 v.127 pp. 652-666
ISSN:
1001-0742
Subject:
2,4-D; carbon; catalysts; catalytic activity; electric energy consumption; electron paramagnetic resonance spectroscopy; hydroxyl radicals; mineralization; oxidation; phenol; reaction kinetics; sulfamethazine; China
Abstract:
... An ultra-efficient electro-Fenton catalyst with porous carbon coated Fe-Mo metal (FeMo@PC), was prepared by calcining MIL-53(Fe)@MoO₃. This FeMo@PC-2 exhibited impressive catalytic performance for sulfamethazine (SMT) degradation with a high turnover frequency value (7.89 L/(g·min)), much better than most of reported catalysts. The mineralization current efficiency and electric energy consumption ...
DOI:
10.1016/j.jes.2022.06.031

4. Through converting the surface complex on TiO2 nanorods to generate superoxide and singlet oxygen to remove CN−

Author:
Laiqi Zhang; Ridha Djellabi; Peidong Su; Yan Wang; Jianling Zhao
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 300-309
ISSN:
1001-0742
Subject:
aerogels; carbon; cathodes; cyanides; dielectric spectroscopy; electric current; electric potential difference; electron paramagnetic resonance spectroscopy; hydroxyl radicals; industry; nanorods; oxidation; photocatalysis; singlet oxygen; sulfates; titanium dioxide; wastewater; China
Abstract:
... Cyanide (CN⁻) is extensively used in the process of plating devices and for surface treatment in the electroplating industry and is extremely hazardous to humans and the environment. Peroxymonosulfate (PMS)-based advanced oxidation processes (AOPs) hold considerable promise for CN⁻ removal. However, the activity of sulfate radical and hydroxyl radical generated in the PMS activation process is low ...
DOI:
10.1016/j.jes.2021.08.054

5. 2D Cu-Bipyridine MOF Nanosheet as an Agent for Colon Cancer Therapy: A Three-in-One Approach for Enhancing Chemodynamic Therapy

Author:
Chengbin Wang; Fengfeng Xue; Mengxin Wang; Lu An; Dan Wu; Qiwei Tian
Source:
ACS applied materials & interfaces 2022 v.14 no.34 pp. 38604-38616
ISSN:
1944-8252
Subject:
cancer therapy; colorectal neoplasms; coordination polymers; hydrogen sulfide; hydroxyl radicals; nanosheets
Abstract:
... Chemodynamic therapy (CDT) is a highly tumor-specific and minimally invasive treatment that is widely used in cancer therapy. However, its therapeutic effect is limited by the poor efficiency of hydroxyl radical generation. In colon cancer in particular, the high expression of hydrogen sulfide (H₂S), which has strong reducibility, results in the consumption of generated hydroxyl radicals, further ...
DOI:
10.1021/acsami.2c11999

6. Acidity-responsive nanocages as robust reactive oxygen species generators with butterfly effects for maximizing oxidative damage and enhancing cancer therapy

Author:
Xingru Zhao; Xingyi Wan; Tian Huang; Shuncheng Yao; Shaobo Wang; Yiming Ding; Yunchao Zhao; Zhou Li; Linlin Li
Source:
Journal of colloid and interface science 2022 v.618 pp. 270-282
ISSN:
0021-9797
Subject:
butterflies; calcium; cancer therapy; cell death; cytokines; cytotoxicity; endocytosis; excretion; hydroxyl radicals; immunity; mice; mitochondria; neoplasms; pH; photothermotherapy
Abstract:
... Recently, with the rational design of transition metal-containing nanoagents, chemodynamic therapy (CDT) has been developed and considered a promising method for cancer therapy through Fenton and Fenton-like reaction-induced hydroxyl radical (·OH) generation and cellular oxidative damage. However, it is still a great challenge to realize high reactive oxygen species (ROS) generation and therapeuti ...
DOI:
10.1016/j.jcis.2022.03.084

7. Activation of peroxymonosulfate by natural pyrite for efficient degradation of V(IV)-citrate complex in groundwater

Author:
Yawei Han; Sijia Sun; Baogang Zhang; Junqun Du; Xiaoguang Duan
Source:
Journal of colloid and interface science 2022 v.617 pp. 683-693
ISSN:
0021-9797
Subject:
catalytic activity; citric acid; groundwater; hydroxyl radicals; ligands; oxidation; pyrite; sulfates; total organic carbon; toxicity; vanadium; water pollution; water treatment
Abstract:
... The V(IV)-organic complexes are difficult to be removed from water by the traditional water treatment processes due to their strong mobility, high stability, and possible formation of V(V) with stronger toxicity during oxidation. In this study, we applied a natural iron-based ore, pyrite, to catalyze peroxymonosulfate (PMS) activation assisted with alkali precipitation to remove V(IV) containing c ...
DOI:
10.1016/j.jcis.2022.03.057

8. Advanced oxidation processes for water purification using percarbonate: Insights into oxidation mechanisms, challenges, and enhancing strategies

Author:
Yangju Li; Haoran Dong; Junyang Xiao; Long Li; Dongdong Chu; Xiuzhen Hou; Shuxue Xiang; Qixia Dong; Haoxuan Zhang
Source:
Journal of hazardous materials 2023 v.442 pp. 130014
ISSN:
0304-3894
Subject:
carbonates; cost effectiveness; decontamination; ecotoxicology; hydroxyl radicals; oxidation; prices; singlet oxygen; superoxide anion; toxicity; water purification; water quality
Abstract:
... Percarbonate (SPC) has drawn considerable attention due to its merits in the safety of handling and transport, stability, and price as well as environmental friendliness, which has been extensively applied in advanced oxidation processes (AOPs) for water decontamination. Nevertheless, comprehensive information on the application of SPC-AOPs for the treatment of organic compounds in aquatic media i ...
DOI:
10.1016/j.jhazmat.2022.130014

9. Antibiotics degradation by UV/chlor(am)ine advanced oxidation processes: A comprehensive review

Author:
Zedong Lu; Yanchen Ling; Wenjun Sun; Chaoran Liu; Ted Mao; Xiuwei Ao; Tianyin Huang
Source:
Environmental pollution 2022 v.308 pp. 119673
ISSN:
0269-7491
Subject:
antibiotics; chlorine; disinfection; electric power; energy; human health; hydroxyl radicals; oxidation; pollution; reactive nitrogen species; toxicity
Abstract:
... Antibiotics are emerging contaminants in aquatic environments which pose serious risks to the ecological environment and human health. Advanced oxidation processes (AOPs) based on ultraviolet (UV) light have good application prospects for antibiotic degradation. As new and developing UV-AOPs, UV/chlorine and derived UV/chloramine processes have attracted increasing attention due to the production ...
DOI:
10.1016/j.envpol.2022.119673

10. Anticancer, antioxidant, and antimicrobial properties of solvent extract of Lobophora variegata through in vitro and in silico studies with major phytoconstituents

Author:
Nithya Palaniappan; Balamuralikrishnan Balasubramanian; Malaisamy Arunkumar; Karthika Pushparaj; Kannan R.R. Rengasamy; Viji Maluventhen; Murugan Pitchai; Jowaher Alanazi; Wen-Chao Liu; Arumugam Maruthupandian
Source:
Food bioscience 2022 v.48 pp. 101822
ISSN:
2212-4292
Subject:
Enterococcus faecalis; Escherichia coli; Gibbs free energy; Lobophora variegata; Pseudomonas aeruginosa; Staphylococcus aureus; antibacterial properties; antioxidant activity; biofilm; chemical constituents of plants; colorectal neoplasms; computer simulation; computer software; cytotoxicity; dietary supplements; flavonoids; free radicals; human cell lines; humans; hydroxyl radicals; methanol; phenol; phthalic acid; solvents
Abstract:
... Seaweeds possess a wide range of bioactive compounds which have been play a vital role in production of novel pharmaceutical and nutraceutical products resources. The present study employed in silico molecular docking to characterize the biomedical potential of brown seaweed Lobophora variegata through antibacterial, antibiofilm, antioxidant and anticancer activities. The antibacterial activity of ...
DOI:
10.1016/j.fbio.2022.101822

11. Antioxidant Effects of Stevia rebaudiana Leaf and Stem Extracts on Lipid Oxidation in Salted Pacific Saury (Cololabis saira) during Processing

Author:
Haimei Liu; Gangqiang Yang; Qin Zhao; Haiyan Li; Lihong Niu; Hongyan Wu; Hui Yu
Source:
European journal of lipid science and technology 2022 v.124 no.4 pp. e2100223
ISSN:
1438-7697
Subject:
Cololabis saira; Stevia rebaudiana; antioxidant activity; byproducts; fish; hydroxyl radicals; industry; leaves; lipid peroxidation; lipids; lipoxygenases; meat; salted fish
Abstract:
... Stevia rebaudiana, cultivated as a sweetener, also contains numerous phenolic compounds with strong antioxidant activities. Here, the antioxidant effects of Stevia rebaudiana leaf (SRL) and stem (SRS) extracts on lipid oxidation in salted Pacific saury (Cololabis saira) fillets throughout the salting and drying process are investigated. Fish fillets treated with SRL and SRS extracts are monitored ...
DOI:
10.1002/ejlt.202100223

12. Antioxidant Properties of Larch Tannins with Different Mean Polymerization Degrees: Controlled Degradation Based on Hydroxyl Radical Degradation

Author:
Bin Jia; Zhenyu Wei; Xiangnan Kong; Shitao Xia; Lu Gan; Shuguang Han
Source:
Journal of agricultural and food chemistry 2022 v.70 no.30 pp. 9367-9376
ISSN:
1520-5118
Subject:
Larix; antioxidant activity; food chemistry; formaldehyde; free radicals; hydrogen peroxide; hydroxyl radicals; molecular weight; polymerization; ultraviolet radiation
Abstract:
... Hydroxyl radical produced by hydrogen peroxide decomposition under UV radiation was used to degrade larch tannins in an environmentally friendly manner. The formaldehyde reactivity of the degraded products was used as an index to control the mean degree of polymerization (mDP) of the degraded products, and the effects of different mDP on the antioxidant activity of tannins were studied. Results sh ...
DOI:
10.1021/acs.jafc.2c02389

13. Antioxidant activities of premature and mature mandarin (Citrus unshiu) peel and juice extracts

Author:
Seogyeong Lee; Hyun Jung Kim
Source:
Food science and biotechnology 2022 v.31 no.5 pp. 627-633
ISSN:
1226-7708
Subject:
Citrus aurantium var. chrysocarpa; biotechnology; flavanones; food science; functional foods; gallic acid; hesperidin; hydrogen peroxide; hydroxyl radicals; quercetin
Abstract:
... In vitro antioxidant activities of premature and mature mandarin peel and juice extracts were investigated for their potentials as functional food materials. Total phenolic and flavonoid content of premature and mature mandarin peel and juice was in the range of 31.20 to 94.04 mg gallic acid equivalent (GAE)/g and 0.09 to 43.99 mg quercetin equivalent (QE)/g, respectively. Among flavanone compound ...
DOI:
10.1007/s10068-022-01064-5

14. Antioxidant activity and stability of endogenous peptides from farmed hybrid catfish (Clarias macrocephalus × Clarias gariepinus) muscle

Author:
Manat Chaijan; Tanutchaporn Rodsamai; Sawanya Charoenlappanit; Sittiruk Roytrakul; Atikorn Panya; Natthaporn Phonsatta; Ling‐Zhi Cheong; Worawan Panpipat
Source:
International journal of food science & technology 2022 v.57 no.2 pp. 1083-1092
ISSN:
0950-5423
Subject:
Clarias gariepinus; Clarias macrocephalus; antioxidant activity; catfish; digestion; food science; free radicals; histidine; hybrids; hydrophobicity; hydroxyl radicals; muscles; pH; peptides; technology; temperature; tryptophan
Abstract:
... The antioxidant activity and stability of endogenous peptides isolated from farmed hybrid catfish (Clarias macrocephalus × Clarias gariepinus) muscle (EPC) were characterised. EPC contained 69 peptides with 8–24 amino acid residues, varying hydrophobic amino acid (HBA) content and distinct sequences. Among the top five, peptides discovered in EPC were ARHSYGMLYCSCPPND, DTQAARKSDDDD, AEFPCGDRRC, AA ...
DOI:
10.1111/ijfs.15474

15. Antioxidant activity assessment of Yingjisha sweet almond oil

Author:
Wei Zhao; Liwen Wang; Fan Yang; Ning Zhang; Jiahuan Fan; Shini Qin; Tong Shao; Xianao Xu; Shiyin Yan; Hongxing Guo; Jianying Li; Hui Zhao
Source:
International journal of food science & technology 2022 v.57 no.3 pp. 1773-1781
ISSN:
0950-5423
Subject:
2,2-diphenyl-1-picrylhydrazyl; Prunus dulcis; Saccharomyces cerevisiae; almond oil; antioxidant activity; carbon tetrachloride; catalase; food science; gas chromatography-mass spectrometry; genes; hydrogen peroxide; hydroxyl radicals; lipid peroxidation; mechanism of action; methyl palmitate; models; oleic acid; oxidation; stearic acid; technology; China
Abstract:
... Sweet almond is one of the main cash crops in Yingjisha, Xinjiang Autonomous Region, China. The composition of sweet almond oil (SAO) was analysed by gas chromatography‐mass spectrometry (GC‐MS). SAO’s antioxidant activities were investigated by measuring its scavenging ability with 1,1‐diphenyl‐2‐picrylhydrazyl (DPPH), 2,2′‐Azino‐bis (3‐ethylbenzothiazoline‐6‐sulfonic acid) (ABTS), hydroxyl radic ...
DOI:
10.1111/ijfs.15553

16. Antioxidant and angiotensin I-converting enzyme (ACE) inhibitory peptides of rainbow trout (Oncorhynchus mykiss) viscera hydrolysates subjected to simulated gastrointestinal digestion and intestinal absorption

Author:
Priscilla Vásquez; José E. Zapata; Verónica C. Chamorro; Susan F. García Fillería; Valeria A. Tironi
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.154 pp. 112834
ISSN:
0023-6438
Subject:
Oncorhynchus mykiss; bioavailability; cations; hydrolysates; hydrolysis; hydroxyl radicals; in vitro digestion; intestinal absorption; oxygen radical absorbance capacity; peptides; peptidyl-dipeptidase A
Abstract:
... The objective of this work was to evaluate in vitro bioaccessibility, intestinal absorption, antioxidant and angiotensin I-converting enzyme (ACE) inhibitory activities of peptides from rainbow trout viscera hydrolysate (H). Rainbow trout Viscera (V) was hydrolyzed by Alcalase® 2.4L and a degree of hydrolysis (DH) of 44.8 ± 2.5% was achieved. Viscera and its hydrolysate were subjected to simulated ...
DOI:
10.1016/j.lwt.2021.112834

17. Antioxidant and anti-proliferative activity of free, conjugates and bound phenolic compounds from tomato and industrial tomato by-product

Author:
Xiomara Patricia Perea-Domínguez; José Alberto Mendoza-Espinoza; Jesús Martin Solano González; José Belisario Leyva-Morales; Laura Gabriela Espinosa-Alonso; Maribel Valdez-Morales
Source:
Journal of food science and technology 2022 v.59 no.6 pp. 2361-2369
ISSN:
0022-1155
Subject:
breast neoplasms; byproducts; cell lines; cytotoxicity; food science; grape tomatoes; grapes; hydroxyl radicals; myoglobin; neoplasm cells; phenolic compounds; superoxide anion; technology
Abstract:
... The aim of this study was to evaluate the antioxidant and anti-proliferative activity of different fractions of phenolic compounds from tomato and tomato by-product. Soluble free phenolics and bound phenolics (BP) fractions from saladette tomato and industrial tomato by-product as well as, conjugated acid-hydrolysable phenolics (AHP) and alkaline-hydrolysable phenolics (AKHP) from saladette tomato ...
DOI:
10.1007/s13197-021-05252-9

18. Antioxidant and anti‐tyrosinase activity of a novel stilbene analogue as an anti‐browning agent

Author:
Wei Xia; Kai Chen; Yu‐Zhu Zhu; Chang‐Jun Zhang; Yu‐Lin Chen; Fan Wang; Yuan‐Yuan Xie; Robert C Hider; Tao Zhou
Source:
Journal of the science of food and agriculture 2022 v.102 no.9 pp. 3817-3825
ISSN:
0022-5142
Subject:
agriculture; antibrowning agents; catechol oxidase; cell viability; hydroxyl radicals; kojic acid; mushrooms; shrimp; stilbenes; superoxide anion
Abstract:
... BACKGROUND: Tyrosinase inhibitors find potential application in food, cosmetic and medicinal products, but most of the identified tyrosinase inhibitors are not suitable for practical use because of safety regulations or other problems. For the purpose of development of novel tyrosinase inhibitors that meet the requirement for practical application, a novel stilbene analogue (SA) was designed. RESU ...
DOI:
10.1002/jsfa.11731

19. Application of TiO2-ceramic/UVA photocatalyst for the photodegradation of sulfamethoxazole

Author:
Van Hoi Bui; Toan Khanh Vu; Hai Tung To; Nobuaki Negishi
Source:
Sustainable chemistry and pharmacy 2022 v.26 pp. 100617
ISSN:
2352-5541
Subject:
ambient water; antibiotics; aquatic environment; bicarbonates; dissolved organic matter; ecotoxicology; green chemistry; hydroxyl radicals; irradiation; molecular weight; pH; photocatalysis; photocatalysts; photolysis; sulfamethoxazole
Abstract:
... Sulfamethoxazole (SMX) is one of the most antibiotic compounds detected in the aquatic environment. The potential concentration of SMX could raise the ecotoxicological effects on microbial. The photocatalyst based on TiO₂ has been demonstrated as the effective material for the elimination of SMX in water. However, due to the non-selected attack of hydroxyl radical derived from photocatalysis to S– ...
DOI:
10.1016/j.scp.2022.100617

20. Application of alginate oligosaccharide produced by enzymatic hydrolysis in the preservation of prawns

Author:
Fen Yan; Jinfu Zhong; Junying Chen; Wenjing Liu; Xiaojie Chen
Source:
Food bioscience 2022 v.49 pp. 101897
ISSN:
2212-4292
Subject:
alginates; antioxidant activity; enzymatic hydrolysis; freshness; hydroxyl radicals; melanosis; oligosaccharides; pH; polymerization; shelf life; storage time; texture; total volatile basic nitrogen
Abstract:
... Alginate oligosaccharide (AOS) was enzymatically prepared and had a degree of polymerization (DP) of 2–6. AOS exhibited evident antioxidant efficacy in ABTS⁺ scavenging activity, hydroxyl radical scavenging capacity, and total reducing power. The freshness of the prawns, which were treated with AOS and ε-polylysine (ε-PL), was evaluated by measuring indicators such as total viable bacteria (TVC), ...
DOI:
10.1016/j.fbio.2022.101897

21. Application of persulfate-based oxidation processes to address diverse sustainability challenges: A critical review

Author:
Dagang Lin; Yu Fu; Xiaodie Li; Lingli Wang; Meiru Hou; Dongdong Hu; Qingchao Li; Zhen Zhang; Chunxiao Xu; Sifan Qiu; Zhaohui Wang; Grzegorz Boczkaj
Source:
Journal of hazardous materials 2022 v.440 pp. 129722
ISSN:
0304-3894
Subject:
decontamination; disinfection; groundwater; hydroxyl radicals; oxidation; pathogens; pollutants; remediation; sludge; soil; solid wastes; sulfates; waste treatment
Abstract:
... Over the past years, persulfate (PS) is widely applied due to their high versatility and efficacy in decontamination and sterilization. While treatment of organic chemicals, remediation of soil and groundwater, sludge treatment, disinfection on pathogen microorganisms have been covered by most published reviews, there are no comprehensive and specific reviews on its application to address diverse ...
DOI:
10.1016/j.jhazmat.2022.129722

22. Aqueous ozone: Chemistry, physiochemical properties, microbial inactivation, factors influencing antimicrobial effectiveness, and application in food

Author:
Yashaswini Premjit; N. U. Sruthi; R. Pandiselvam; Anjineyulu Kothakota
Source:
Comprehensive reviews in food science and food safety 2022 v.21 no.2 pp. 1054-1085
ISSN:
1541-4337
Subject:
decontamination; disinfectants; energy; food matrix; food safety; half life; hydroxyl radicals; novel foods; oxidation; oxygen; ozone; pesticide degradation; seed germination; starch; sustainable agriculture
Abstract:
... The need for sustainable food production and the demand for fresh and minimally processed foods have prompted remarkable research in novel food processing technologies that ensure safe and shelf‐stable food for a large population. Long‐established techniques such as heating, drying, and freezing have been associated with nutrient loss and high energy consumption. This trend has drawn attention to ...
DOI:
10.1111/1541-4337.12886

23. Arbuscular mycorrhizal fungi induce flavonoid synthesis for mitigating oxidative damage of trifoliate orange under water stress

Author:
Xiao-Qing Liu; Shen Cheng; Ricardo Aroca; Ying-Ning Zou; Qiang-Sheng Wu
Source:
Environmental and experimental botany 2022 pp. 105089
ISSN:
0098-8472
Subject:
Glomus mosseae; Poncirus trifoliata; chalcone isomerase; drought; drought tolerance; flavonoids; growth performance; hydrogen peroxide; hydroxyl radicals; ligases; lipid peroxidation; p-coumaric acid; phenylalanine; phenylalanine ammonia-lyase; plant growth; soil water; vesicular arbuscular mycorrhizae; water stress
Abstract:
... Arbuscular mycorrhizal (AM) fungi can increase the tolerance of host plants to drought, whereas the intrinsic mechanisms are not still fully elucidated. Flavonoids are a kind of antioxidants to scavenge reactive oxygen species (ROS), whereas whether and how flavonoids are involved in increased drought tolerance of host plants by AM fungi is not known. Here, Funneliformis mosseae, was inoculated in ...
DOI:
10.1016/j.envexpbot.2022.105089

24. Assessing the source of the photochemical formation of hydroxylating species from dissolved organic matter using model sensitizers

Author:
Kylie Couch; Frank Leresche; Claire Farmer; Garrett McKay; Fernando L. Rosario-Ortiz
Source:
Environmental science 2022 v.24 no.1 pp. 102-115
ISSN:
2050-7895
Subject:
benzene; benzoic acid; dissolved organic matter; environmental science; hydroxyl radicals; hydroxylation; irradiation; methanol; phenol; photolysis; quinones; salicylic acid; singlet oxygen
Abstract:
... Dissolved organic matter (DOM) is ubiquitous in natural waters and can facilitate the chemical transformation of many contaminants through the photochemical production of reactive intermediates, such as singlet oxygen (¹O₂), excited triplet state DOM (³DOM*), and hydroxylating species (˙OH and other intermediates of similar reaction chemistry). The formation mechanism of most reactive intermediate ...
DOI:
10.1039/d1em00345c

25. Atmospheric oxidizing capacity in autumn Beijing: Analysis of the O3 and PM2.5 episodes based on observation-based model

Author:
Chenhui Jia; Shengrui Tong; Xinran Zhang; Fangjie Li; Wenqian Zhang; Weiran Li; Zhen Wang; Gen Zhang; Guiqian Tang; Zirui Liu; Maofa Ge
Source:
Journal of environmental sciences (China) 2023 v.124 pp. 557-569
ISSN:
1001-0742
Subject:
aerosols; air pollution; autumn; formaldehyde; hydroxyl radicals; models; nitrous acid; oxidants; ozone; photolysis; troposphere; uncertainty; China
Abstract:
... Atmospheric oxidizing capacity (AOC) is the fundamental driving factors of chemistry process (e.g., the formation of ozone (O₃) and secondary organic aerosols (SOA)) in the troposphere. However, accurate quantification of AOC still remains uncertainty. In this study, a comprehensive field campaign was conducted during autumn 2019 in downtown of Beijing, where O₃ and PM₂.₅ episodes had been experie ...
DOI:
10.1016/j.jes.2021.11.020

26. Bifunctional nickel foam composite cathode co-modified with CoFe@NC and CNTs for electrocatalytic degradation of atrazine over wide pH range

Author:
Xiuping Sun; Haiqiang Qi; Zhirong Sun
Source:
Chemosphere 2022 v.286 pp. 131972
ISSN:
0045-6535
Subject:
Escherichia coli; alloys; atrazine; carbon; carbon nanotubes; catalytic activity; cathodes; crystal structure; elemental composition; foams; free radicals; hydrogen peroxide; hydroxyl radicals; nickel; pH; singlet oxygen; superoxide anion; toxicity
Abstract:
... Bifunctional cathodes have attracted widespread interest in the heterogeneous electro-Fenton (hetero-EF) process. In this study, the bifunctional composite cathode co-modified with N-doped carbon CoFe alloy (CoFe@NC) and carbon nanotubes (CNTs), designated as CoFe@NC-CNTs/CNTs/NF, integrating hydrogen peroxide (H₂O₂) synthesis and catalysis, was prepared for efficient degradation of atrazine (ATZ) ...
DOI:
10.1016/j.chemosphere.2021.131972

27. Bimetal defects boost efficient photocatalytic H2O2 in-situ production of Cu1-xCo2-yO4-z for contaminant degradation

Author:
Xiaojuan Bai; Boxuan Sun; Tianqi Jia; Linlong Guo; Haiyan Li; Xiaoran Zhang; Ziyang Zhang; Yongwei Gong; Derek Hao
Source:
Journal of cleaner production 2022 v.369 pp. 133245
ISSN:
0959-6526
Subject:
hydrogen; hydroxyl radicals; photocatalysis; photocatalysts; photolysis; temperature; wastewater treatment
Abstract:
... Targeted design of metal defects in photocatalysts helps to realize stable and efficient wastewater treatment. Herein, a novel spinel Cu₁₋ₓCo₂₋yO₄₋z with bimetal defects is precisely designed by a simple temperature programmed reduction method in hydrogen atmosphere. The co-existence of metallic defects leads to defects distortion forming polarization effect, which can significantly accelerate the ...
DOI:
10.1016/j.jclepro.2022.133245

28. Bioactive Peptide Fractions from Collagen Hydrolysate of Common Carp Fish Byproduct: Antioxidant and Functional Properties

Author:
Diego J. González-Serrano; Milad Hadidi; Matin Varcheh; Aniseh Zarei Jelyani; Andres Moreno; Jose M. Lorenzo
Source:
Antioxidants 2022 v.11 no.3 pp. -
ISSN:
2076-3921
Subject:
Cyprinus carpio; antioxidant activity; byproducts; collagen; emulsions; fish; foams; functional foods; hydrolysates; hydroxyl radicals; molecular weight; pH; peptides; solubility; subtilisin
Abstract:
... Collagen isolated from byproducts of common carp was hydrolyzed with alcalase enzyme to obtain peptide fractions. The resulting >30 kDa (PF1), 10–30 kDa (PF2), 3–10 kDa (PF3) and <1 kDa (PF4) fractions were studied for their antioxidant and functional properties. All peptide fractions illustrated antioxidant activity at different concentrations (1, 5, and 10 mg/mL). Although PF4 indicated the high ...
DOI:
10.3390/antiox11030509

29. Bioactive polyphenolic compounds, water-soluble vitamins, in vitro anti-inflammatory, anti-diabetic and free radical scavenging properties of underutilized alternate crop Amaranthus spinosus L. from Gangetic plain of West Bengal

Author:
Agnideepa Kar; Soumen Bhattacharjee
Source:
Food bioscience 2022 pp. 102072
ISSN:
2212-4292
Subject:
Amaranthus spinosus; alternative crops; bioavailability; coagulation; free radicals; functional foods; hydroxyl radicals; medicinal plants; peroxidation; phytonutrients; superoxide anion; thiamin; vegetables; water solubility; India
Abstract:
... Studies associated with validation of folklore and ethnomedicinal claim of utilization of different plant parts of ‘spiny amaranth’ (Amaranthus spinosus L.) against degenerative diseases with chemical data, particularly the bioactive polyphenolic compounds and associated anti-degenerative properties are scanty and is the purpose of the present investigations. RP-HPLC coupled photodiode assay was e ...
DOI:
10.1016/j.fbio.2022.102072

30. Biomimetic design of graphdiyne supported hemin for enhanced peroxidase-like activity

Author:
Tao Wang; Xuelong Bi; Lina Wang; Manhong Liu; William W. Yu; Zhiling Zhu; Ning Sui
Source:
Journal of colloid and interface science 2022 v.607 pp. 470-478
ISSN:
0021-9797
Subject:
Raman spectroscopy; biomimetics; catalysts; catalytic activity; electron paramagnetic resonance spectroscopy; electron transfer; enzymes; graphene; hydrogen peroxide; hydroxyl radicals; ligands; superoxide anion
Abstract:
... Effective electronic interactions between molecular catalysts and supports are critical for heterogeneous enzyme mimics, yet they are frequently neglected in most catalyst designs. Taking the enzyme mimics of hemin immobilized on graphdiyne (Hemin-GDY) as an example, we explicate for the first time the underlying role of GDY as a co-catalyst. Based on the robust conjugation between GDY and hemin, ...
DOI:
10.1016/j.jcis.2021.09.006

31. Biomimetic multifunctional nanozymes enhanced radiosensitization for breast cancer via an X-ray triggered cascade reaction

Author:
Lin Yang; Xiao Du; Yanru Qin; Xueyuan Wang; Liefeng Zhang; Zhimeng Chen; Zhongjie Wang; Xu Yang; Meng Lei; Yongqiang Zhu
Source:
Journal of materials chemistry B 2022 v.10 no.19 pp. 3667-3680
ISSN:
2050-7518
Subject:
X-radiation; biomimetics; biosafety; blood; breast neoplasms; cancer therapy; enzymes; hydroxyl radicals; radiotherapy; toxicity
Abstract:
... Radiotherapy has been widely applied for breast cancer treatment in the clinic, while improving the radiation sensitivity of tumors and protecting normal tissues from radiation damage has drawn considerable attention. In this study, we reported a biomimetic multifunctional nanozyme (BSA@CeO/Fe²⁺), which can be used as a radiosensitizer for breast cancer treatment. It was demonstrated that BSA@CeO/ ...
DOI:
10.1039/d2tb00184e

32. Biosynthesis and characterization of zinc oxide nanoparticles from an estuarine-associated actinobacterium Streptomyces spp. and its biotherapeutic applications

Author:
Muthusamy Sanjivkumar; Tamilselvan Silambarasan; Subburaj Ananthi; Kubendran ThangaTharani
Source:
Archives of microbiology 2022 v.204 no.1 pp. 17
ISSN:
0302-8933
Subject:
Candida fructus; Escherichia coli; Streptomyces; absorption; anti-inflammatory activity; antifungal properties; antioxidant activity; biofilm; biosynthesis; estuaries; fungi; growth retardation; hydroxyl radicals; nitric oxide; zinc; zinc oxide
Abstract:
... The present study was conducted to biosynthesize zinc oxide nanoparticles (ZnONPs) by an estuarine associated actinobacterium Streptomyces spp., characterized its spectral features and also determined its biomedical properties. At first, ZnONPs were synthesized by actinobacterial-mediated reduction of zinc oxide metal and then, it was characterized by following standard methodologies. The biosynth ...
DOI:
10.1007/s00203-021-02609-8

33. Bismuth oxybromide/bismuth oxyiodide nanojunctions decorated on flexible carbon fiber cloth as easily recyclable photocatalyst for removing various pollutants from wastewater

Author:
Jiafeng Cai; Yan Zhang; Tianwei Qian; Xiaolong Li; Zhigang Chen; Lisha Zhang
Source:
Journal of colloid and interface science 2022 v.608 pp. 2660-2671
ISSN:
0021-9797
Subject:
acid orange 7; bismuth; carbon fibers; chemical oxygen demand; hydroxyl radicals; levofloxacin; light; lighting; nanosheets; photocatalysts; photolysis; semiconductors; superoxide anion; tetracycline; wastewater
Abstract:
... Various semiconductor powders (such as bismuth oxybromide/bismuth oxyiodide (BiOBr/BiOI) nanojunctions) can photodegrade wastewater efficiently, but their practical application is limited by poor recovery performance. To address the problem, we report the construction of BiOBr/BiOI nanojunctions on flexible carbon fiber cloth (CFC) substrate as an easily recycled photocatalyst by the dipping-solvo ...
DOI:
10.1016/j.jcis.2021.10.188

34. Blue or Near-Infrared Light-Triggered Release of Halogens via Blebbistatin Photocage

Author:
Zicong Situ; Wenbin Chen; Sirui Yang; Xiaolin Fan; Fan Liu; Nai-Kei Wong; Li Dang; David Lee Phillips; Ming-De Li
Source:
Journal of physical chemistry 2022 v.126 no.17 pp. 3338-3346
ISSN:
1520-5207
Subject:
absorption; bromine; chlorine; heterolytic cleavage; hydroxyl radicals; irradiation; photolysis
Abstract:
... Photocages can provide spatial and temporal control to accurately release the various chemicals and bioactive groups when excited by light. Although the absorption spectra of most photocages are in the ultraviolet absorption region, only a few absorb in the visible or near-infrared region. Blebbistatin (Bleb) would release a hydroxyl radical under blue one-photon or two-photon near-infrared light ...
DOI:
10.1021/acs.jpcb.2c01440

35. Capability of copper–nickel ferrite nanoparticles loaded onto multi-walled carbon nanotubes to degrade acid blue 113 dye in the sonophotocatalytic treatment process

Author:
Tariq J. Al-Musawi; Nezamaddin Mengelizadeh; Mahmoud Taghavi; Zaccheus Shehu; Davoud Balarak
Source:
Environmental science and pollution research 2022 v.29 no.34 pp. 51703-51716
ISSN:
0944-1344
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; X-ray diffraction; aquatic environment; carbon dioxide; carbon nanotubes; chemical oxygen demand; coprecipitation; dyes; ferrimagnetic materials; growth retardation; hydroxyl radicals; light intensity; pH; photocatalysis; photolysis; research; sonocatalysis; total organic carbon; toxicity; transmission electron microscopy; ultrasonics; ultraviolet radiation
Abstract:
... In this study, copper–nickel ferrite (CuNiFe₂O₄) nanoparticles were successfully loaded onto multi-walled carbon nanotubes (MWCNTs) by using the coprecipitation method and used as new catalysts (MWCNT–CuNiFe₂O₄) in the sonophotocatalytic degradation process of the acid blue 113 (AB113) dye. The success of the MWCNT–CuNiFe₂O₄ synthesis and its properties were determined by analyzing it using field ...
DOI:
10.1007/s11356-022-19460-z

36. Carbon dot-boosted catalytic activity of CaO₂ by tuning visible light conversion

Author:
Tingting Cai; Wenjing Zheng; Qing Chang; Ning Li; Jinlong Yang; Shengliang Hu
Source:
Journal of materials chemistry A 2022 v.10 no.14 pp. 7792-7799
ISSN:
2050-7496
Subject:
aeration; cancer therapy; catalysts; catalytic activity; energy; hydroxyl radicals; remediation; superoxide anion; toxic substances; ultraviolet radiation; wastewater
Abstract:
... External auxiliary methods, including UV illumination, Fenton reagent addition and O₃ aeration, are broadly used to activate self-generated H₂O₂ from CaO₂ for toxic chemical removal, wastewater remediation, and even cancer therapy. However, these techniques are commercially unfeasible or bring new contaminants into the environment when used. Herein, we present a novel method of tuning visible ligh ...
DOI:
10.1039/d2ta00711h

37. Carbon dots as nanocatalytic medicine for anti-inflammation therapy

Author:
Bo Kong; Tong Yang; Feng Cheng; Yan Qian; Chunmei Li; Lei Zhan; Yuanfang Li; Hongyan Zou; Chengzhi Huang
Source:
Journal of colloid and interface science 2022 v.611 pp. 545-553
ISSN:
0021-9797
Subject:
catalase; cytokines; hot water treatment; hydroxyl radicals; inflammation; lipopolysaccharides; liver; medicine; pathogenesis; peroxidase; superoxide anion; superoxide dismutase; tail; therapeutics
Abstract:
... Aberrant reactive oxygen species (ROS) generation is one of the crucial mediators in the pathogenesis of inflammation. So, the development of nanocatalytic medicine to catalyze the ROS-scavenging reactions in pathological regions are promising for anti-inflammatory therapy. Herein, a type of biocompatible metal free carbon dots is prepared via a hydrothermal method which can exhibit peroxidase (PO ...
DOI:
10.1016/j.jcis.2021.12.107

38. Cartilage-Inspired Hydrogel with Mechanical Adaptability, Controllable Lubrication, and Inflammation Regulation Abilities

Author:
Peng Yu; Yanyan Li; Hui Sun; Xiang Ke; Jiaqi Xing; Yiran Zhao; Xinyuan Xu; Meng Qin; Jing Xie; Jianshu Li
Source:
ACS applied materials & interfaces 2022 v.14 no.23 pp. 27360-27370
ISSN:
1944-8252
Subject:
cartilage; cell death; chondrocytes; fibroblasts; friction; hyaluronic acid; hydrogels; hydroxyl radicals; inflammation; lubrication; macrophages; nitric oxide; osteoarthritis; photoreduction; sulfonates; ultraviolet radiation
Abstract:
... Cartilage is a key component in joints because of its load-bearing and lubricating abilities. However, osteoarthritis often leads to afunction of load-bearing/lubrication and occurrence of inflammation with overexpressed reactive oxygen species (ROS) and nitric oxide (NO). To address these issues, we fabricated a novel polyanionic hydrogel with abundant carboxylates/sulfonates (“CS” hydrogel), ins ...
DOI:
10.1021/acsami.2c04609

39. Catalytic ozonation of aqueous 4-methylquinoline by fluorinated ceramic honeycomb

Author:
Jian Pan; Mengqian Qian; Yu Li; Haiqiang Wang; Baohong Guan
Source:
Chemosphere 2022 v.307 pp. 135678
ISSN:
0045-6535
Subject:
benzene; catalysts; catalytic activity; ceramics; chemical oxygen demand; coal; coal gasification; demethylation; hydroxyl radicals; ozonation; ozone; petroleum; pyridines; quinoline; risk; singlet oxygen; wastewater; wastewater treatment
Abstract:
... Metal-free catalysts for catalytic ozonation have attracted more and more attentions to eliminate the risk of secondary pollution of heavy metals in water or wastewater treatment. Herein we prepared fluorinated ceramic honeycomb (FCH) with the dip-calcination method using NH₄F as the modifier over ceramic honeycomb (CH) to catalyze the ozonation of 4-methylquinoline (4-Meq), a typical harmful quin ...
DOI:
10.1016/j.chemosphere.2022.135678

40. Catalytic ozonation oxidation of ketoprofen by peanut shell-based biochar: effects of the pyrolysis temperatures

Author:
Haiquan Li; Sijia Liu; Siwei Qiu; Lei Sun; Xiangjuan Yuan; Dongsheng Xia
Source:
Environmental technology 2022 v.43 no.6 pp. 848-860
ISSN:
1479-487X
Subject:
adsorption; aqueous solutions; biochar; cellulose; environmental technology; hemicellulose; hydroxyl radicals; ketoprofen; oxidation; oxygen; ozonation; pH; peanut hulls; peanuts; pyrolysis; superoxide anion; surface area; surface roughness; temperature
Abstract:
... A series of peanut shell (HS)-based biochar were prepared at different pyrolysis temperatures and subsequently used as the effective ozonation catalysts for ketoprofen (KET) degradation in aqueous solution. The physicochemical properties and morphology of the obtained biochar were analysed by ICP, TG, XRD, FT-IR, SEM, TEM, BET and etc. characterizations. The results demonstrated that the pyrolysis ...
DOI:
10.1080/09593330.2020.1807610

41. CdS and Ag synergistically improved the performance of g-C3N4 on visible-light photocatalytic degradation of pollution

Author:
Junhong Wang; Bin Liu Xianzhao Shao; Xiaohui Ji; Guanghui Tian; Hongguang Ge
Source:
Environmental science and pollution research 2022 v.29 no.32 pp. 48348-48357
ISSN:
0944-1344
Subject:
adsorption; hydroxyl radicals; light; nanocomposites; photocatalysis; pollution; research; salicylic acid
Abstract:
... CdS-AgO@g-C₃N₄ nanocomposites were successfully synthesized and characterized by XRD, N₂ physical adsorption, XPS, SEM, TEM, EDX, and UV–Vis DRS (various technical means). The adsorption light range of as-prepared materials could extend to the whole visible light region with the addition of Ag. Silver can act as a bridge to facilitate the separation of electrons and holes, thereby greatly enhancin ...
DOI:
10.1007/s11356-022-19204-z

42. Cellulolytic and xylanolytic enzyme combinations in the hydrolysis of red rice bran: A disparity in the release of nutraceuticals and its correlation with bioactivities

Author:
I. Sapna; A. Jayadeep
Source:
Lebensmittel-Wissenschaft + Technologie 2022 v.154 pp. 112856
ISSN:
0023-6438
Subject:
bioactive properties; caffeic acid; cell walls; dietary supplements; enzymes; ferulic acid; food composition; functional foods; humans; hydrolysis; hydroxyl radicals; nitric oxide; oxidation; p-coumaric acid; protocatechuic acid; red rice; rice bran; superoxide anion
Abstract:
... Multienzyme-aided processing is recommended as an effective method for releasing the bioactive compounds bounded to rice bran's cell wall matrix. This study aims to investigate the optimal cellulolytic-xylanolytic enzymes combination (CXC1 = 1.5 + 3 units, CXC2 = 3 + 2 units, CXC3 = 4.5 + 1 units per 2 g bran) for improving the release of nutraceuticals and bioactivities from red rice bran compare ...
DOI:
10.1016/j.lwt.2021.112856

43. Ceratonia siliqua L. kibbles, seeds and leaves as a source of volatile bioactive compounds for antioxidant food biopackaging applications

Author:
Lidia Ait Ouahioune; Magdalena Wrona; Raquel Becerril; Jesús Salafranca; Cristina Nerín; Djamel Djenane
Source:
Food packaging and shelf life 2022 v.31 pp. 100764
ISSN:
2214-2894
Subject:
2,2-diphenyl-1-picrylhydrazyl; Ceratonia siliqua; Escherichia coli; Pseudomonas aeruginosa; Staphylococcus aureus; antibacterial properties; antioxidant activity; bio-packaging; carob; cellulose; color; food safety; gas chromatography-mass spectrometry; headspace analysis; hydroxyl radicals; polymers; safety assessment; shelf life; solid phase microextraction
Abstract:
... Macerates of kibbles, seeds and leaves of Ceratonia siliqua L. were prepared and analysed to apply them for the development of a new multilayer active packaging. The profile of forty-three different bioactive volatile compounds was obtained employing headspace solid-phase microextraction (HS-SPME) coupled to gas chromatography-mass spectrometry (GC-MS). The antioxidant capacity was investigated us ...
DOI:
10.1016/j.fpsl.2021.100764

44. Characteristics and Antioxidant Activity of Fucoidan from Sargassum hystrix: Effect of Extraction Method

Author:
Amir Husni; Nuzulia Izmi; Fatimah Zahra Ayunani; Aprilia Kartini; Naila Husnayain; Alim Isnansetyo
Source:
International Journal of Food Sciences 2022 v.2022 pp. -
ISSN:
2314-5765
Subject:
2,2-diphenyl-1-picrylhydrazyl; Sargassum; ambient temperature; antioxidant activity; bioactive compounds; ethanol; fucoidan; fucose; hydroxyl radicals; sulfates; xylose
Abstract:
... Fucoidan is a bioactive compound of brown seaweed with antioxidant characteristics. This study examined the aftermath of the extraction method on the yield, fucose content, xylose content, sulfate content, total sugar, antioxidant activity, and functional groups of fucoidan from Sargassum hystrix. The brown seaweed was extracted using 4 methods, namely, A (0.1 N HCl, room temperature, 24 h), B (2% ...
DOI:
10.1155/2022/3689724

45. Chemical Oxidation and Reduction Pathways of Mercury Relevant to Natural Waters: A Review

Author:
Lin Si; Brian A. Branfireun; Jessica Fierro
Source:
Water 2022 v.14 no.12 pp. -
ISSN:
2073-4441
Subject:
aquatic environment; carbonates; hydroxyl radicals; mercury; methylation; organic matter; photooxidation; photoreduction; pollution; toxicity; water
Abstract:
... Mercury (Hg) pollution in the environment is a global issue and the toxicity of mercury depends on its speciation. Chemical redox reactions of mercury in an aquatic environment greatly impact on Hg evasion to the atmosphere and the methylation of mercury in natural waters. Identifying the abiotic redox pathways of mercury relevant to natural waters is important for predicting the transport and fat ...
DOI:
10.3390/w14121891

46. Chemical etching to regulation oxygen vacancies on Mn-Fe PBA for highly efficient degradation of bisphenol A and acetaminophen

Author:
Mingjun Xu; Qian Zhang; Ziqi Zhu; Yuwei Xue; Ting Zhang; Junming Hong
Source:
Journal of cleaner production 2022 v.377 pp. 134258
ISSN:
0959-6526
Subject:
acetaminophen; adsorption; ammonia; bisphenol A; catalysts; catalytic activity; density functional theory; electron transfer; hydroxyl radicals; oxygen; phosphoric acid; sulfates; surface area; wastewater treatment
Abstract:
... Prussian blue analogs (PBAs) have been widely explored as catalyst for peroxymonosulfate (PMS) activation. However, the drawbacks of poor electron transfer ability and degradation performance of PBAs hinder their practical application. In this study, oxygen vacancy (OV)-rich Mn-Fe PBA was regulated through phosphoric acid and ammonia water chemical etching to overcome these drawbacks. Experimental ...
DOI:
10.1016/j.jclepro.2022.134258

47. Co-catalysis of trace dissolved Fe(iii) with biochar in hydrogen peroxide activation for enhanced oxidation of pollutants

Author:
Dongqing Feng; Jianxin Shou; Sen Guo; Mengna Ya; Jianfa Li; Huaping Dong; Yimin Li
Source:
RSC advances 2022 v.12 no.27 pp. 17237-17248
ISSN:
2046-2069
Subject:
2,4-D; adsorption; biochar; electron transfer; feedstocks; hydrogen peroxide; hydroxyl radicals; iron; oxidation; sawdust; sulfamethazine; wood
Abstract:
... Activation of hydrogen peroxide (H₂O₂) with biochar is a sustainable and low-cost approach for advanced oxidation of organic pollutants, but faces the challenge of a low yield of hydroxyl radical (˙OH). Herein, we hypothesize that the activation efficiency of H₂O₂ can be enhanced through co-catalysis of trace dissolved iron (Fe) with biochar. Two biochar samples derived from different feedstock, n ...
DOI:
10.1039/d2ra01647h

48. Co2+/PMS based sulfate-radical treatment for effective mineralization of spent ion exchange resin

Author:
Muhammad Aamir Hafeez; Seok Ju Hong; Junsung Jeon; Juhyeok Lee; Bhupendra Kumar Singh; Neil C. Hyatt; Samuel A. Walling; Jong Heo; Wooyong Um
Source:
Chemosphere 2022 v.287 pp. 132351
ISSN:
0045-6535
Subject:
Fourier transform infrared spectroscopy; catalysts; chemical oxygen demand; electron paramagnetic resonance spectroscopy; hydroxyl radicals; industry; ion exchange resins; liquids; mineralization; oxidants; oxidation; pH; sulfates; temperature; volatile organic compounds
Abstract:
... Sulfate radical advance oxidation processes (SR-AOPs) have attracted a greater attention as a suitable alternative of the hydroxyl radical based advance oxidation process (HR-AOPs). In this study, for the first time we report liquid phase mineralization of nuclear grade cationic IRN-77 resin in Co²⁺/peroxymonosulfate (PMS) based SR-AOPs. After the dissolution of cationic IRN-77 resin, 30 volatile ...
DOI:
10.1016/j.chemosphere.2021.132351

49. Coating gold nanorods with silica prevents the generation of reactive oxygen species under laser light irradiation for safe biomedical applications

Author:
Sarra Mitiche; Syrine Gueffrache; Sylvie Marguet; Jean-Frédéric Audibert; Robert Bernard Pansu; Bruno Palpant
Source:
Journal of materials chemistry B 2022 v.10 no.4 pp. 589-597
ISSN:
2050-7518
Subject:
drugs; electron transfer; fluorescence; gene transfer; gold; hydroxyl radicals; irradiation; nanogold; nanorods; photochemotherapy; silica; singlet oxygen
Abstract:
... Gold nanoparticles can produce reactive oxygen species (ROS) under the action of ultrashort pulsed light. While beneficial for photodynamic therapy, this phenomenon is prohibitive for other biomedical applications such as imaging, photo-thermal drug release, or targeted gene delivery. Here, ROS are produced in water by irradiating gold nanorods and silica-coated gold nanorods with near-infrared fe ...
DOI:
10.1039/d1tb02207e

50. Commentary for an article on spin trapping of superoxide and hydroxyl radical: Practical aspect

Author:
Toshihiko Ozawa; Ikuo Nakanishi
Source:
Archives of biochemistry and biophysics 2022 v.720 pp. 109153
ISSN:
0003-9861
Subject:
biochemistry; biophysics; hydroxyl radicals; oxidative stress
Abstract:
... This commentary describes a highly cited paper by Eli Finkelstein, Gerald M. Rosen, and Elmer J. Raukman that appeared in Archives of Biochemistry and Biophysics published in 1980. They reviewed many reports being regularly appearing in the literature describing spin trapping and hydroxyl radicals from various sources and contributed to the development and progress that has been made in oxidative ...
DOI:
10.1016/j.abb.2022.109153