Kinetics of Oxidation of Iodide (I<sup>–</sup>) and Hypoiodous Acid (HOI) by Peroxymonosulfate (PMS) and Formation of Iodinated Products in the PMS/I<sup>–</sup>/NOM System

Li, Juan; Jiang, Jin; Zhou, Yang; Pang, Shengyong; Gao, Yuan; Jiang, Chengchun; Ma, Jun; Jin, Yixin; Yang, Yi; Liu, Guanqi; Wang, Lihong; Guan, Chaoting

doi:10.1021/acs.estlett.6b00471

Cited by 78 publications

(38 citation statements)

References 56 publications

(80 reference statements)

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“…Previous studies have postulated that reaction of I − with either the MPO/H 2 O 2 /Cl − system, or its product HOCl, forms HOI and hence IO 3 − via a rapid disproportionation reaction that regenerates a proportion of the I − originally consumed (Equation (2)) [64]. These secondary products, such as IO 3 − , would be expected to be less reactive than HOI itself [65]. The formation of IO 3 − on reaction of HOCl with I − was confirmed by spectrophotometric assay after reaction of HOCl (100 μM) with equimolar concentrations of I − at 21 °C over a period of 20 min (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Iodide modulates protein damage induced by the inflammation-associated heme enzyme myeloperoxidase

et al. 2020

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Iodide ions (I−) are an essential dietary mineral, and crucial for mental and physical development, fertility and thyroid function. I− is also a high affinity substrate for the heme enzyme myeloperoxidase (MPO), which is involved in bacterial cell killing during the immune response, and also host tissue damage during inflammation. In the presence of H2O2 and Cl−, MPO generates the powerful oxidant hypochlorous acid (HOCl), with excessive formation of this species linked to multiple inflammatory diseases. In this study, we have examined the hypothesis that elevated levels of I− would decrease HOCl formation and thereby protein damage induced by a MPO/Cl−/H2O2 system, by acting as a competitive substrate. The presence of increasing I− concentrations (0.1–10 μM; i.e. within the range readily achievable by oral supplementation in humans), decreased damage to both model proteins and extracellular matrix components as assessed by gross structural changes (SDS-PAGE), antibody recognition of parent and modified protein epitopes (ELISA), and quantification of both parent amino acid loss (UPLC) and formation of the HOCl-biomarker 3-chlorotyrosine (LC-MS) (reduced by ca. 50% at 10 μM I−). Elevated levels of I− ( > 1 μM) also protected against functional changes as assessed by a decreased loss of adhesion (eg. 40% vs. < 22% with >1 μM I−) of primary human coronary artery endothelial cells (HCAECs), to MPO-modified human plasma fibronectin. These data indicate that low micromolar concentrations of I−, which can be readily achieved in humans and are readily tolerated, may afford protection against cell and tissue damage induced by MPO.

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Section: Resultsmentioning

confidence: 99%

Iodide modulates protein damage induced by the inflammation-associated heme enzyme myeloperoxidase

et al. 2020

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“…Im et al [39] identified 4-hydroxycumyl alcohol (HCA), a product of oxidation of BPA electrons by MnO 2 which undergoes microbiological degradation faster than bisphenol itself. Bisphenol transformation in soil is greatly affected by iodide ion (I − ), which is oxidised to hypoiodic acid (HOI) or molecular iodine (I2) [40]. Vikesland et al [41] demonstrated that I − stimulates transformations of bisphenols, triclosan and phenol.…”

Section: Introductionmentioning

confidence: 99%

Soil Microbiome Response to Contamination with Bisphenol A, Bisphenol F and Bisphenol S

Zaborowska

Wyszkowska

Borowik

2020

IJMS

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The choice of the study objective was affected by numerous controversies and concerns around bisphenol F (BPF) and bisphenol S (BPS)—analogues of bisphenol A (BPA). The study focused on the determination and comparison of the scale of the BPA, BPF, and BPS impact on the soil microbiome and its enzymatic activity. The following parameters were determined in soil uncontaminated and contaminated with BPA, BPF, and BPS: the count of eleven groups of microorganisms, colony development (CD) index, microorganism ecophysiological diversity (EP) index, genetic diversity of bacteria and activity of dehydrogenases (Deh), urease (Ure), catalase (Cat), acid phosphatase (Pac), alkaline phosphatase (Pal), arylsulphatase (Aryl) and β-glucosidase (Glu). Bisphenols A, S and F significantly disrupted the soil homeostasis. BPF is regarded as the most toxic, followed by BPS and BPA. BPF and BPS reduced the abundance of Proteobacteria and Acidobacteria and increased that of Actinobacteria. Unique types of bacteria were identified as well as the characteristics of each bisphenol: Lysobacter, Steroidobacter, Variovorax, Mycoplana, for BPA, Caldilinea, Arthrobacter, Cellulosimicrobium and Promicromonospora for BPF and Dactylosporangium Geodermatophilus, Sphingopyxis for BPS. Considering the strength of a negative impact of bisphenols on the soil biochemical activity, they can be arranged as follows: BPS > BPF > BPA. Urease and arylsulphatase proved to be the most susceptible and dehydrogenases the least susceptible to bisphenols pressure, regardless of the study duration.

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“…Asam hypoiodous merupakan senyawa yang terbentuk dari reaksi kombinasi antara hidrogen peroksida H 2 O 2 dan KIO 3 yang dikatalisis oleh enzim peroksidase (Al-Baarri et al, 2018). Senyawa ini tergolong dalam kelompok asam lemah yang tersusun atas ion H + dan OI - (Li et al, 2017). Kedua ion tersebut dapat berikatan dengan struktur luar dari fenol tanaman yang bersifat hidrofilik yang bertanggungjawab dalam melakukan aksi antioksidan (Gulcin et al, 2010).…”

Section: Hasil Dan Pembahasan Aktivitas Antioksidanunclassified

Perubahan Aktivitas Antioksidan dan Total Mikroba Salak Pondoh Selama Penyimpanan dengan Asam Hypoiodous (HIO)

Gusrianto

Fatimah-Muis

Al-Baarri

et al. 2018

J. Apl. Teknol. Pang.

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Penelitian ini bertujuan untuk mengetahui efek asam hypoiodous (HIO) pada aktivitas antioksidan dan total mikrobia pada salak Pondoh selama penyimpanan pada suhu ruang. Metode eksperimen yang digunakan untuk penelitian ini adalah rancangan acak kelompok dua perlakuan dan tiga kali ulangan dengan total sampel sebanyak 45 salak Pondoh dengan minimum usia panen adalah sekitar 5 bulan dengan berat sebesar 65±7 g per salak. Penyemprotan HIO dilakukan satu kali perhari dan dengan volume sebanyak 0,5 ml. Setelah penyemprotan, dilakukan penyimpanan pada suhu ruang selama 12 hari. Pengukuran aktivitas antioksidan dan total mikroba dilakukan setiap dua hari sekali. Analisis data menggunakan Shapiro-Wilk, Independent t-test, dan Mann-Whitney. Hasil penelitian menunjukkan bahwa selama penyimpanan, telah terjadi peningkatan aktivitas antioksidan pada salak mulai dari 21,7±1,72% hingga kisaran 82,4% untuk tanpa dan dengan perlakuan HIO serta terdapat peran HIO yang sangat nyata dalam menurunkan total mikroba pada salak pondoh HIO. Kesimpulannya, HIO dapat digunakan untuk agen yang dapat meningkatkan antioksidan serta dapat digunakan untuk menekan perkembangan mikroba pada salak.Hypoiodous Acid Effect on Antioxidant Activity and Total Microbes in Salak Pondoh in Room Temperature of StorageAbstract This study was aimed at analyzing the influence of hypohiodous acid or HIO on antioxidant activity and total microbes in salak pondoh during storage at room temperature. This study used a group randomized design with two treatments and three replications. Each group consisted of 45 salak Pondoh which was harvested at 5 months age with size 65±7 g/salak. The spraying of 0.5 ml of HIO was done everyday for entire of salak surface, then salak was stored at 25ºC for 12 days. The measurement of antioxidant activity and total microbes was performed every two days. Data were analized using Shapiro-Wilk, Independent t-test, and Mann-Whitney. Result indicated that HIO was able to increase antioxidant activity from 21.7±1.72 to about 82% for control and HIO treated salak. HIO was also inhibit growth total microbes significantly. As conclusion, HIO might be used as an agent to increase antioxidant activity and inhibit total microbe in salak.

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Kinetics of Oxidation of Iodide (I^–) and Hypoiodous Acid (HOI) by Peroxymonosulfate (PMS) and Formation of Iodinated Products in the PMS/I^–/NOM System

Cited by 78 publications

References 56 publications

Iodide modulates protein damage induced by the inflammation-associated heme enzyme myeloperoxidase

Iodide modulates protein damage induced by the inflammation-associated heme enzyme myeloperoxidase

Soil Microbiome Response to Contamination with Bisphenol A, Bisphenol F and Bisphenol S

Perubahan Aktivitas Antioksidan dan Total Mikroba Salak Pondoh Selama Penyimpanan dengan Asam Hypoiodous (HIO)

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Kinetics of Oxidation of Iodide (I–) and Hypoiodous Acid (HOI) by Peroxymonosulfate (PMS) and Formation of Iodinated Products in the PMS/I–/NOM System

Cited by 78 publications

References 56 publications

Iodide modulates protein damage induced by the inflammation-associated heme enzyme myeloperoxidase

Iodide modulates protein damage induced by the inflammation-associated heme enzyme myeloperoxidase

Soil Microbiome Response to Contamination with Bisphenol A, Bisphenol F and Bisphenol S

Perubahan Aktivitas Antioksidan dan Total Mikroba Salak Pondoh Selama Penyimpanan dengan Asam Hypoiodous (HIO)

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Kinetics of Oxidation of Iodide (I^–) and Hypoiodous Acid (HOI) by Peroxymonosulfate (PMS) and Formation of Iodinated Products in the PMS/I^–/NOM System