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Articles de revues sur le sujet « Peracide »

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Auteur : Grafiati
Publié le 18 mai 2024

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1

Lion, Claude, Mir Hedayatullah, Claude Charvy, Sylvette Briand, StÉPhane Vincent, Laurent Fosset, GÉRard Delmas, Gilbert Magnaud, Michel Desgranges et Henri Sentenac-Roumanou. « Nouveaux decontaminants generation “in situ” d'un peracide par action d'un persel sur un initiateur, reactivite de ce peracide vis-a-vis du paraoxon ». Bulletin des Sociétés Chimiques Belges 104, no 8 (1 septembre 2010) : 515–19. http://dx.doi.org/10.1002/bscb.19951040808.

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2

Fossey, Jacques, Daniel Lefort, Massoud Massoudi, Jean-Yves Nedelec et Jeanine Sorba. « Régiosélectivité et stéréosélectivité de l'hydroxylation homolytique des hydrocarbures par le peracide benzoïque ». Canadian Journal of Chemistry 63, no 3 (1 mars 1985) : 678–80. http://dx.doi.org/10.1139/v85-111.

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Cyclohexane, methylcyclohexane, and adamantane are hydroxylated by a radical process using perbenzoic acid. A regioselectivity of 60–90% in favour of tertiary alcohols is noted. In the case of cis and trans decalins, stereoselection leading to 9-decalols can reach 97%. Such a stereoselectivity for hydroxylation by use of a peracid does not necessarily indicate lack of a radical pathway.
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3

Patil, Vilas Venunath, et Ganapati Subray Shankarling. « Nonanebis(peroxoic acid) : a stable peracid for oxidative bromination of aminoanthracene-9,10-dione ». Beilstein Journal of Organic Chemistry 10 (24 avril 2014) : 921–28. http://dx.doi.org/10.3762/bjoc.10.90.

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A new protocol for the oxidative bromination of aminoanthracene-9,10-dione, which is highly deactivated towards the electrophilic substitution is investigated. The peracid, nonanebis(peroxoic acid), possesses advantages such as better stability at room temperature, it is easy to prepare and non-shock sensitiv as compared to the conventional peracids. The present protocol has a broad scope for the bromination of various substituted and unsubstituted aminoanthracene-9,10-diones.
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4

Pikh, Zoryan. « Oxidation of unsaturated aldehydes by different oxidants ». Chemistry & ; Chemical Technology 1, no 2 (15 juin 2007) : 61–69. http://dx.doi.org/10.23939/chcht01.02.061.

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The new data about oxidation of unsaturated aldehydes of a general structure R–CH = C(R)–CHO by molecular oxygen (in liquid and gaseous phase), peracids and hydrogen peroxide were obtained. The composition of reaction products for a series of aldehydes with different structures was determined. The dependencies of the selectivity of reaction from an aldehyde structure and oxidant type have been evaluated. It has been assumed that a stage of aldehyde interaction with peracid determines the formation of reaction products. The common mechanisms of unsaturated aldehydes oxidation by different oxidants have been established on the basis of generalization of obtained results.
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5

Haras, Alicja, et Tom Ziegler. « DFT mechanistic studies on the epoxidation of cyclohexene by non-heme tetraaza manganese complexes ». Canadian Journal of Chemistry 87, no 1 (1 janvier 2009) : 33–38. http://dx.doi.org/10.1139/v08-065.

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Herein, we report density functional calculations on the epoxidation of cyclohexene with H2O2 activated by (Me2EBC)MnCl2 (Me2EBC stands for 4,11-dimethyl-1,4,8,11-tetraazabicyclo[6.6.2]hexadecane). The computed energy landscapes for different interaction modes of cyclohexene with the MnIV-hydroperoxo complex and the MnV-oxo species support recent experimental findings by Busch and co-workers [J. Am. Chem. Soc. 127, 17170 (2005)], according to which the MnIV-hydroperoxo species is the active complex for olefin epoxidation. Thus, the dominant olefin epoxidation pathway is via direct transfer of the distal protonated oxygen of the hydroperoxo adduct without changes in the oxydation state of its tetravalent metal centre, i.e., the mechanism commonly observed in the uncatalyzed epoxidation by peracids. The homolytic decomposition of the O–OH bond in the active manganese complex leading to the MnV-oxo species is found to be the only epoxidation pathway that could possibly compete with the Oβ transfer from the hydroperoxo adduct. However, the generated MnV-oxo is shown to be a rather poor oxidant resulting in low yields of the target epoxy cyclohexane.Key words: epoxidation, density functional theory, permanganic acid, peracid.
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Kuban-Jankowska, Alicja, Magdalena Gorska, Jack A. Tuszynski, Cassandra D. M. Churchill, Philip Winter, Mariusz Klobukowski et Michal Wozniak. « Inactivation of Protein Tyrosine Phosphatases by Peracids Correlates with the Hydrocarbon Chain Length ». Cellular Physiology and Biochemistry 36, no 3 (2015) : 1069–83. http://dx.doi.org/10.1159/000430280.

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Background/Aims: Protein tyrosine phosphatases are crucial enzymes controlling numerous physiological and pathophysiological events and can be regulated by oxidation of the catalytic domain cysteine residue. Peracids are highly oxidizing compounds, and thus may induce inactivation of PTPs. The aim of the present study was to evaluate the inhibitory effect of peracids with different length of hydrocarbon chain on the activity of selected PTPs. Methods: The enzymatic activity of human CD45, PTP1B, LAR, bacterial YopH was assayed under the cell-free conditions, and activity of cellular CD45 in human Jurkat cell lysates. The molecular docking and molecular dynamics were performed to evaluate the peracids binding to the CD45 active site. Results: Here we demonstrate that peracids reduce enzymatic activity of recombinant CD45, PTP1B, LAR, YopH and cellular CD45. Our studies indicate that peracids are more potent inhibitors of CD45 than hydrogen peroxide (with an IC50 value equal to 25 nM for peroctanoic acid and 8 µM for hydrogen peroxide). The experimental data show that the inactivation caused by peracids is dependent on hydrocarbon chain length of peracids with maximum inhibitory effect of medium-chain peracids (C8-C12 acyl chain), which correlates with calculated binding affinities to the CD45 active site. Conclusion: Peracids are potent inhibitors of PTPs with the strongest inhibitory effect observed for medium-chain peracids.
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7

Pikh, Zorian, Roman Nebesnyi, Volodymyr Ivasiv, Andrij Pich et Sofia Vynnytska. « Oxidation of Unsaturated Aldehydes by Organic Peracids ». Chemistry & ; Chemical Technology 10, no 4 (15 septembre 2016) : 401–11. http://dx.doi.org/10.23939/chcht10.04.401.

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The paper is dedicated to studies of kinetic regularities of oxidation of unsaturated aldehydes by organic peracids. The routes of products formation were considered, kinetic model of the oxidation reaction was designed and reaction activation parameters were calculated based on experimental data. New data on reactivity of aldehydes with various structures in the reaction with peracids were obtained.
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8

Collins, Daniel P., Issa S. Isaac, Eric D. Coulter, Paul W. Hager, David P. Ballou et John H. Dawson. « Reaction of ferric Caldariomyces fumago chloroperoxidase with meta-chloroperoxybenzoic acid : sequential formation of compound I, compound II and regeneration of the ferric state using one reactant ». Journal of Porphyrins and Phthalocyanines 17, no 01n02 (janvier 2013) : 63–72. http://dx.doi.org/10.1142/s1088424612501234.

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The mechanism of the reaction between ferric Caldariomyces fumago chloroperoxidase (CCPO) and meta-chloroperoxybenzoic acid (mCPBA) has been examined. It has previously been established that an Fe(IV) -oxo porphyrin radical species known as Compound I (Cpd I) is formed by two-electron oxidation of the native ferric enzyme by a variety of oxidants including organic peracids and hydroperoxides. Cpd I can return to the ferric state either by direct oxygen insertion into an organic substrate (e.g. a P450 oxygenase-like reaction), or by two consecutive one-electron additions, the first resulting in an intermediate Fe(IV) -oxo species known as Compound II (Cpd II). There has been much debate over the role of Cpd II and the details of its structure. In the present study, both CCPO Fe(IV) -oxo intermediates are formed, but unlike most CCPO reactions, Cpd I and Cpd II are formed using the same reactant, mCPBA. Thus, the peracid is used as an oxo donor to produce Cpd I and then as a reductant to reduce Cpd I to Cpd II, and finally, Cpd II to the ferric state. The observation of saturation kinetics with respect to mCPBA concentration for each step is consistent with the formation of CCPO-mCPBA complexes in each phase of the reaction. The original reaction mechanism for ferric CCPO with mCPBA was hypothesized to involve a scrambling mechanism with a unique Fe -OOO-C(O)R intermediate formed with no observed Cpd II intermediate. The data reported herein clearly demonstrate the formation of Cpd II in returning the oxidized enzyme back to its native ferric state.
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9

Bińczak, Jakub, Anna Szelwicka, Agnieszka Siewniak, Krzysztof Dziuba et Anna Chrobok. « Oxidation of Cyclohexanone with Peracids—A Straight Path to the Synthesis of ε-Caprolactone Oligomers ». Materials 15, no 19 (23 septembre 2022) : 6608. http://dx.doi.org/10.3390/ma15196608.

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During Baeyer–Villiger (BV) oxidation of cyclohexanone with peracids, oligo(ε-caprolactone) (OCL) may be formed. In this work, a two-step one-pot method for the synthesis of OCL involving the BV oxidation of cyclohexanone with peracids and then oligomerization of the resulting ε-caprolactone has been developed. The process was carried out in two solvents: toluene and cyclohexane. Based on the studies, it was determined that the increased temperature (45–55 °C) and the longer reaction time (4 h) favor the formation of OCls. Among the tested peracids (perC8-C12), perC10 turned out to be the most effective oxidant. Moreover, the obtained oligomers were characterized by means of NMR, MS MALDI TOF, and TGA analyses, which made it possible to determine the structure of oligomers (length and terminal groups of the chains). Additionally, the oligomers obtained after the distillation of the reaction mixture were analyzed.
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Hassan, Suriaya, Abdul Ansari, Arvind Kumar, Munna Ram, Sulaxna Sharma et Awanish Sharma. « Corrosion Resistance of Electroless Ni-P-W/ZrO<sub>2</sub> ; Nanocomposite Coatings in Peracid Solutions ». Materials Science Forum 1048 (4 janvier 2022) : 72–79. http://dx.doi.org/10.4028/www.scientific.net/msf.1048.72.

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In current investigation, the Ni-P-W/ZrO2 electroless nanocomposite coatings are deposited upon mild steel substrate (AISI 1040 grade). The W/ZrO2 nanoparticles (50 to 130 nm range) were incorporated separately into acidic electroless Ni-P matrix as a second phase materials. The as-plated EL Ni-P-W/ZrO2 depositions were also heated at 400 οC in Argon atmosphere for one hour duration and analyzed by SEM/EDAX and XRD physical methods. The Ni-P-W/ZrO2 as-plated coupons revealed nebulous type structures while heated coupons showed crystalline structures in both cases. Furthermore Ni-P-ZrO2 coatings have very less cracks and gaps as compared to Ni-P-W coatings. The corrosion tests result in peracid (0.30 ± 0.02 % active oxygen) solutions point up that corrosivity of peracid ( 500 ppm Cl) is more than peracid (0 ppm Cl) and corrosion resistance of tested coupons varies as Ni-P-ZrO2 (as-plated) > Ni-P-ZrO2 (heated) > Ni-P-W (as-plated) > Ni-P-W (heated) > MS. The utilization of Ni-P-ZrO2 nanocomposite coatings in peracid solutions can be considered a cost effective option on the basis of its better cost/strength ratio in addition to its fair corrosion resistance.
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11

Feeder, N., et W. Jones. « Two N-saccharin peracids ». Acta Crystallographica Section C Crystal Structure Communications 50, no 8 (15 août 1994) : 1347–49. http://dx.doi.org/10.1107/s0108270194002040.

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Feeder, N., et W. Jones. « Four ω-Phthalimidoaliphatic Peracids ». Acta Crystallographica Section C Crystal Structure Communications 52, no 6 (15 juin 1996) : 1516–20. http://dx.doi.org/10.1107/s010827019501701x.

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13

Rubio, M., G. Ramírez-Galicia et L. Jovany López-Nava. « Mechanism formation of peracids ». Journal of Molecular Structure : THEOCHEM 726, no 1-3 (août 2005) : 261–69. http://dx.doi.org/10.1016/j.theochem.2005.02.076.

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14

Re, Rebecca N., Johanna C. Proessdorf, James J. La Clair, Maeva Subileau et Michael D. Burkart. « Tailoring chemoenzymatic oxidation via in situ peracids ». Organic & ; Biomolecular Chemistry 17, no 43 (2019) : 9418–24. http://dx.doi.org/10.1039/c9ob01814j.

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15

Wirasti, Wirasti, et Wulan Agustin Ningrum. « PEMBINAAN PERACIK JAMU DI KECAMATAN KEDUNGWUNI KABUPATEN PEKALONGAN ». Jurnal Pengabdian Kesehatan 3, no 2 (19 août 2020) : 150–55. http://dx.doi.org/10.31596/jpk.v3i2.88.

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Peran pengobatan tradisional termasuk peracik obat tradisional/jamu mempunyai peranan yang cukup penting dalam pemerataan pelayanan kesehatan untuk mewujudkan derajat kesehatan masyarakat yang optimal. Ramuan yang digunakan oleh peracik obat tradisional/jamu hampir keseluruhannya terdiri lebih dari satu jenis tanaman obat.Tujuan pengabdian masyrakat ini adalah menambah pengetahuan peracik obat tradisional/jamu dalam hal aturan pemerintah tentang obat tradisional/jamu dan meningkatkan kualitas produksi peracik obat tradisional/peracik jamu.Metode pelaksanaan pengabdian masyarakat ini adalah terlebih dahulu pengumpulan data peserta, selanjutnya dilakukan pretes pada hari pelaksanaan, penyuluhan menggunakan metode ceramah dan praktek cara pembuatan obat yang baik dan sesuai aturan pemerintah. Hasil dari kegiatan ini adalah meningkatnya pengetahuan peracik jamu sebesar 400% dari nilai yang baik, Nilai cukup menurun 20% dari sebelum dilakukan kegiatan, untuk nilai kurang menjadi 0% artinya setelah dilakukan kegiatan ini jumlah peserta paracik jamu semua sudah mempunyai pengetahuan yang meningkat.Diharapkan Peracik jamu mempunyai ketrampilan yang meningkat.Kata kunci: Peracik, jamu, ceramah, trampil
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Armstrong, Alan, Paul A. Barsanti, Paul A. Clarke et Anthony Wood. « Ketone-directed peracid epoxidation ». Tetrahedron Letters 35, no 33 (août 1994) : 6155–58. http://dx.doi.org/10.1016/0040-4039(94)88103-0.

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Kim, Kwang-Seo, Jeffrey G. Pelton, William B. Inwood, Ulla Andersen, Sydney Kustu et David E. Wemmer. « The Rut Pathway for Pyrimidine Degradation : Novel Chemistry and Toxicity Problems ». Journal of Bacteriology 192, no 16 (16 avril 2010) : 4089–102. http://dx.doi.org/10.1128/jb.00201-10.

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ABSTRACT The Rut pathway is composed of seven proteins, all of which are required by Escherichia coli K-12 to grow on uracil as the sole nitrogen source. The RutA and RutB proteins are central: no spontaneous suppressors arise in strains lacking them. RutA works in conjunction with a flavin reductase (RutF or a substitute) to catalyze a novel reaction. It directly cleaves the uracil ring between N-3 and C-4 to yield ureidoacrylate, as established by both nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry. Although ureidoacrylate appears to arise by hydrolysis, the requirements for the reaction and the incorporation of 18O at C-4 from molecular oxygen indicate otherwise. Mass spectrometry revealed the presence of a small amount of product with the mass of ureidoacrylate peracid in reaction mixtures, and we infer that this is the direct product of RutA. In vitro RutB cleaves ureidoacrylate hydrolytically to release 2 mol of ammonium, malonic semialdehyde, and carbon dioxide. Presumably the direct products are aminoacrylate and carbamate, both of which hydrolyze spontaneously. Together with bioinformatic predictions and published crystal structures, genetic and physiological studies allow us to predict functions for RutC, -D, and -E. In vivo we postulate that RutB hydrolyzes the peracid of ureidoacrylate to yield the peracid of aminoacrylate. We speculate that RutC reduces aminoacrylate peracid to aminoacrylate and RutD increases the rate of spontaneous hydrolysis of aminoacrylate. The function of RutE appears to be the same as that of YdfG, which reduces malonic semialdehyde to 3-hydroxypropionic acid. RutG appears to be a uracil transporter.
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Ikuma, Naohiko, Koichi Fujioka, Yusuke Misawa, Ken Kokubo et Takumi Oshima. « Oxidative deamination of azafulleroids into C60 by peracids ». Organic & ; Biomolecular Chemistry 13, no 17 (2015) : 5038–43. http://dx.doi.org/10.1039/c5ob00272a.

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Minning, Stefan, Albrecht Weiss, Uwe T. Bornscheuer et Rolf D. Schmid. « Determination of peracid and putative enzymatic peracid formation by an easy colorimetric assay ». Analytica Chimica Acta 378, no 1-3 (janvier 1999) : 293–98. http://dx.doi.org/10.1016/s0003-2670(98)00612-6.

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Berg, Jason M., et Richard J. Joseph. « Cerebellar Infarcts in Two Dogs Diagnosed With Magnetic Resonance Imaging ». Journal of the American Animal Hospital Association 39, no 2 (1 mars 2003) : 203–7. http://dx.doi.org/10.5326/0390203.

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Two dogs presented with severe, peracute-onset, neurological signs. Neuroanatomical localization was cerebellovestibular. Magnetic resonance imaging (MRI) was performed and revealed focal, wedge-shaped lesions in the cerebellum. Diagnosis of cerebellar infarctions was made based on peracute-onset, clinical signs, MRI, and outcome as well as ancillary diagnostic information. Both dogs recovered completely. Cerebellar infarction should be included in the differential of any dog with peracute-onset, central cerebellovestibular signs regardless of severity of clinical signs. Outcome was excellent in these dogs.
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NDRIANTSOA, SERGE HERILALA, ROGER-DANIEL RANDRIANIAINA, OLGA RAMILIJAONA RAVOAHANGIMALALA, MIGUEL VENCES et JULIAN GLOS. « Description of two tadpoles of Malagasy treefrogs, Spinomantis sp. aff. peraccae and Spinomantis tavaratra (Anura : Mantellidae) ». Zootaxa 3248, no 1 (27 mars 2012) : 66. http://dx.doi.org/10.11646/zootaxa.3248.1.5.

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The aim of this study is to present morphological descriptions of the tadpoles of two species of Malagasy treefrogs of the genus Spinomantis (Anura: Mantellidae). The first of these, Spinomantis sp. aff. peraccae, from Ambohitantely is an unconfirmed candidate species (not included in Vieites et al. 2009) of which no adult specimen was collected so far but which is distinguished by a substantial genetic divergence of 6% to S. peraccae, Genbank accession AY848415, from Antoetra in the 16S rRNA gene. This candidate species is thus far taxonomically undescribed, but describing its tadpole contributes to the understanding of larval diversity in the genus Spinomantis and might prove to be important for a future revision of the S. peraccae complex, once that the larvae of S. peraccae and other related candidate species from northern Madagascar become known.
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Parbat, Papiya, Alka Devi et Vikas D. Ghule. « Computational assessment of nitrogen-rich peracids : a family of peroxide-based energetic materials ». RSC Advances 7, no 35 (2017) : 21585–91. http://dx.doi.org/10.1039/c7ra02201h.

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Sarbini, Sarbini. « APAKAH USIA DAN MASA KERJA DI APOTEK X MEMPENGARUHI PRODUKTIFITAS ? » SISTEM Jurnal Ilmu Ilmu Teknik 17, no 2 (10 août 2021) : 1–7. http://dx.doi.org/10.37303/sistem.v17i2.202.

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Usia pekerja akan bertambah setiap tahun seiring juga penambahan masa kerja . Pada apotik , pekerjaan peracik obat membutuhan ketrampilan dan ketelitian dan ketaatan pada SOP kerja agar obat yang diracik tidak terdapat kesalahan. Masa kerja bertambah secara langsung akan meningkatkan pengalaman kerja peracik obat dan memahami SOP dengan cermat. Peneliti meneliti apakah pengaruh usia dan masa kerja memiliki pengaruh pada tingkat produktifitas pekerja ? Dan pada usia berapa tingkat produktifitas optimum pada pekerja peracik obat. Penelitian dilakukan di Apotik X dengan 27 peracik dengan rentang usia pekerja dari 25 – 35 tahun dengan masa kerja 4 - 7 tahun. Hasil penelitian bahwa pengaruh usia pekerja dan masa kerja pekerja secara simultan memiliki pengaruh pada produktifitas sebesar 8,3%. Usia optimum peracik obat didapat pada usia 25- 30 tahun.
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Klein, Manuela, et Ivar Ugi. « 2-(4-Toluenesulphonyl)-3-aryloxaziridines as Oxidizing Reagents for P(III) Compounds ». Zeitschrift für Naturforschung B 47, no 6 (1 juin 1992) : 887–90. http://dx.doi.org/10.1515/znb-1992-0619.

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The preparation of four 2-(4-toluenesulphonyl)-3-aryloxaziridines by oxidation of the corresponding imines by peracids is described. The relative oxidation rates of trimethyl phosphite by these oxaziridines are determined.
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Bouzid, Mouna, Hassen Ben Salah et Majed Kammoun. « Peracid Oxidation of Dihydroisoquinoline Iminium ». Asian Journal of Organic and Medicinal Chemistry 3, no 3 (2018) : 121–25. http://dx.doi.org/10.14233/ajomc.2018.ajomc-p148.

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Sitko, Magdalena, Anna Szelwicka, Andrzej Wojewódka, Andrzej Skwarek, Dariusz Tadasiewicz, Lech Schimmelpfennig, Krzysztof Dziuba, Magdalena Morawiec-Witczak et Anna Chrobok. « Perdecanoic acid as a safe and stable medium-chain peracid for Baeyer–Villiger oxidation of cyclic ketones to lactones ». RSC Advances 9, no 51 (2019) : 30012–18. http://dx.doi.org/10.1039/c9ra06087a.

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Stability studies dedicated to high-energy compounds for a series of linear peracids (C6–C12), including sensitivity to mechanical impulse, electrical and thermal sensitivity, were presented in this work for the first time.
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FEEDER, N., et W. JONES. « ChemInform Abstract : Four ω-Phthalimidoaliphatic Peracids. » ChemInform 27, no 41 (4 août 2010) : no. http://dx.doi.org/10.1002/chin.199641015.

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Böeseken, J., et G. Elsen. « L'oxydation des Stilbènes par les Peracides ». Recueil des Travaux Chimiques des Pays-Bas 47, no 8 (3 septembre 2010) : 694–97. http://dx.doi.org/10.1002/recl.19280470807.

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Moore, Dorothy L., Gilles Delage, Hubert Labelle et Marie Gauthier. « Peracute Streptococcal Pyomyositis ». Journal of Pediatric Orthopaedics 6, no 2 (mars 1986) : 232–35. http://dx.doi.org/10.1097/01241398-198603000-00022.

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Buggle, Katherine, et Bernadette Fallon. « Peracid oxidation of benzothiopyranthiones and benzopyranthiones ». Monatshefte f�r Chemie Chemical Monthly 118, no 10 (octobre 1987) : 1197–99. http://dx.doi.org/10.1007/bf00811293.

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ARMSTRONG, A., P. A. BARSANTI, P. A. CLARKE et A. WOOD. « ChemInform Abstract : Ketone-Directed Peracid Epoxidation. » ChemInform 26, no 1 (18 août 2010) : no. http://dx.doi.org/10.1002/chin.199501079.

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Aitken, R. Alan, Fiona M. Fotherby et Alexandra M. Z. Slawin. « 2,6-exo-8,10-exo-4-Butyl-9-oxa-4-azatetracyclo[5.3.1.02,6.08,10]undecane-3,5-dione ». Molbank 2022, no 1 (20 janvier 2022) : M1320. http://dx.doi.org/10.3390/m1320.

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The title epoxide was obtained by spontaneous epoxidation of the corresponding unsaturated imide in air or by peracid oxidation. Unambiguous assignment of the 1H- and 13C-NMR spectra is achieved by comparison between analogous compounds and its X-ray structure confirms the exo,exo-configuration.
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ZHANG, GUODONG, LI MA, VANESSA H. PHELAN et MICHAEL P. DOYLE. « Efficacy of Antimicrobial Agents in Lettuce Leaf Processing Water for Control of Escherichia coli O157:H7 ». Journal of Food Protection 72, no 7 (1 juillet 2009) : 1392–97. http://dx.doi.org/10.4315/0362-028x-72.7.1392.

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The objectives of this research were to study transfer and control of Escherichia coli O157:H7 during simultaneous washing of inoculated and uninoculated lettuce pieces and to determine the efficacy of antimicrobial agents (peroxyacetic acid, mixed peracid, and sodium hypochlorite) on reducing the transfer of E. coli O157:H7 through processing water with or without organic load. Lettuce leaf pieces (5 by 5 cm) were inoculated with a five-strain mixture of green fluorescent protein–labeled E. coli O157:H7 at 5.6 log CFU per piece. One inoculated lettuce piece was added to five uninoculated leaves during washing. Peroxyacetic acid and mixed peracid were tested at 10, 20, and 30 ppm, and chlorine was tested at 30 and 50 ppm. No organic load (liquefied lettuce leaves) and 10% organic load in processing water were compared. Without organic load, peroxyacetic acid at 30 ppm, mixed peracid at 10, 20, and 30 ppm, and chlorine at 30 and 50 ppm all significantly reduced E. coli O157: H7 in processing water by 1.83, 1.73, 1.50, 1.83, 1.34, and 1.83 log CFU/ml, respectively, compared with washing with water alone. These antimicrobials at all concentrations tested also significantly reduced transfer of the bacteria from an inoculated leaf to uninoculated leaves in the processing water by 0.96 to 2.57 log CFU per piece. A 10% organic load in the processing water reduced efficacy of antimicrobial agents. In this contaminated water, peroxyacetic acid at 10 and 20 ppm and chlorine at 30 ppm produced effects not significantly different from those of water alone. Therefore, it is important to understand the impact of organic load when validating the effectiveness of antimicrobial treatments.
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34

Spolitak, Tatyana, John H. Dawson et David P. Ballou. « Reaction of Ferric Cytochrome P450cam with Peracids ». Journal of Biological Chemistry 280, no 21 (21 mars 2005) : 20300–20309. http://dx.doi.org/10.1074/jbc.m501761200.

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Murahashi, Shun-Ichi, Takeshi Naota, Yoshiaki Oda et Naruhisa Hirai. « Ruthenium-Catalyzed Oxidation of Alcohols with Peracids ». Synlett 1995, no 07 (juillet 1995) : 733–34. http://dx.doi.org/10.1055/s-1995-5075.

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36

Luukkonen, Tero, et Simo O. Pehkonen. « Peracids in water treatment : A critical review ». Critical Reviews in Environmental Science and Technology 47, no 1 (20 décembre 2016) : 1–39. http://dx.doi.org/10.1080/10643389.2016.1272343.

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37

Murahashi, S. « Ruthenium-catalyzed oxidation of alkanes with peracids ». Tetrahedron Letters 35, no 41 (10 octobre 1994) : 7953–56. http://dx.doi.org/10.1016/s0040-4039(00)78394-8.

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Abdullin, M. I., A. A. Basyrov, O. S. Kukovinets, A. B. Glazyrin et G. I. Khamidullina. « Epoxidation of syndiotactic 1,2-polybutadiene with peracids ». Polymer Science Series B 55, no 5-6 (mai 2013) : 349–54. http://dx.doi.org/10.1134/s1560090413060018.

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39

Lapitskaya, Margarita A., Vera A. Vil’, Elena D. Daeva, Alexander O. Terent’ev et Kasimir K. Pivnitsky. « Alcoholysis of malonyl peroxides to give peracids ». Mendeleev Communications 26, no 1 (janvier 2016) : 14–15. http://dx.doi.org/10.1016/j.mencom.2016.01.006.

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40

Kluge, R., M. Schulz et S. Liebsch. « Sulfonic peracids — III. Heteroatom oxidation and chemoselectivity ». Tetrahedron 52, no 16 (avril 1996) : 5773–82. http://dx.doi.org/10.1016/0040-4020(96)00202-5.

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Murahashi, Shun-Ichi, Yoshiaki Oda, Naruyoshi Komiya et Takeshi Naota. « Ruthenium-catalyzed oxidation of alkanes with peracids ». Tetrahedron Letters 35, no 43 (octobre 1994) : 7953–56. http://dx.doi.org/10.1016/0040-4039(94)80020-0.

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42

Safiullin, R. L., R. N. Zaripov, V. D. Komissarov et G. A. Tolstikov. « Hydroxylation of saturated hydrocarbons by alkanesulfonic peracids ». Bulletin of the Academy of Sciences of the USSR Division of Chemical Science 38, no 4 (avril 1989) : 878. http://dx.doi.org/10.1007/bf00953316.

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43

Black, DS, et RJ Strauch. « Nitrones and Oxaziridines. XL. Oxidation of 2H-Pyrroles and 3-Benzoyloxy-1-pyrrolines ». Australian Journal of Chemistry 42, no 5 (1989) : 699. http://dx.doi.org/10.1071/ch9890699.

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Peracid oxidation of 2H-pyrroles (1a-d) gave the related 2H-pyrrole 1-oxides (2a-d). Similar oxidation of the 3-benzoyloxy-1-pyrroline (7a) also gave a 2H-pyrrole 1-oxide (9), while other benzoyloxy pyrrolines (7b,c) yielded the related oxaziridines (8b,c). Some other oxygenated by-products were also identified.
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44

Meladinis, Vassilios, Rudolf Herrmann, Oliver Steigelmann et Gerhard Müller. « Synthesis and Structure of a New Chiral Oxaziridine from (3-Oxo-camphorsulfonyl)imine ». Zeitschrift für Naturforschung B 44, no 11 (1 novembre 1989) : 1453–58. http://dx.doi.org/10.1515/znb-1989-1122.

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Oxidation of (3-oxo-camphorsulfonyl)imine (1) by magnesium monoperoxyphthalate does not lead to the oxaziridine obtained with 3-chloro-perbenzoic acid, but to a new chiral oxaziridine containing an additional oxygen atom (Baeyer-Villiger type oxidation). The structure of the product is established by X-ray crystallography, and reaction pathways for the oxidation of 1 by peracids are discussed.
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45

Armstrong, Alan, Paul A. Barsanti, Paul A. Clarke et Anthony Wood. « Ketone-directed peracid epoxidation of cyclic alkenes ». Journal of the Chemical Society, Perkin Transactions 1, no 12 (1996) : 1373. http://dx.doi.org/10.1039/p19960001373.

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GINGERICH, S. B., et P. W. JENNINGS. « ChemInform Abstract : Peracid Oxidations of Furan Systems ». ChemInform 22, no 6 (23 août 2010) : no. http://dx.doi.org/10.1002/chin.199106328.

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47

Fukushima, Yuki, Erina Kino, Aina Furutani, Tomoya Minamino, Kazuyuki Honkawa, Yoichiro Horii et Yosuke Sasaki. « Effect of Major Diseases on Productivity of a Large Dairy Farm in a Temperate Zone in Japan ». Dairy 3, no 4 (9 novembre 2022) : 789–98. http://dx.doi.org/10.3390/dairy3040054.

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The objective of the present study was to investigate the associations between major diseases (clinical mastitis, peracute mastitis, metabolic disorders, peripartum disorders) and four parameters related to productivity (305-day milk yield, number of days open, culling rate, death rate) on a large dairy farm in a temperate zone with approximately 2500 Holstein cows. Data were collected from 2014 to 2018 and involved 9663 calving records for 4256 cows. We found negative effects of clinical mastitis, peracute mastitis, metabolic disorders, and peripartum disorders on the productivity of cows. Clinical-mastitis-suffered cows with multiple diseases had more days open compared with those with clinical mastitis alone and the healthy group, and they had a higher death rate than the healthy group, whereas there was no difference in death rate between the clinical mastitis only and healthy groups. Cows suffering from peracute mastitis, metabolic disorders, and peripartum disorders with either single or multiple diseases exhibited reduced productivity compared with the healthy group. Our findings clearly show that major diseases of cows in a temperate zone have severely negative effects on their productivity.
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48

Hofmann, Hans, et Herbert Fischer. « Heterocyclische Siebenring-Verbindungen, XXX Synthese und Eigenschaften von 4-Methoxy-1,5-benzothiazepin, einem einfachen Vertreter des 1,4-Thiazepin-Ringsystems/ Heterocyclic Seven-Membered Ring Compounds, XXX Synthesis and Properties of 4-Methoxy-1,5-benzothiazepine, a Simple Derivative of the 1,4-Thiazepine Ring System ». Zeitschrift für Naturforschung B 42, no 2 (1 février 1987) : 217–20. http://dx.doi.org/10.1515/znb-1987-0216.

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Abstract Alkylation of 1,5-benzothiazepin-4(5H)-one (1) with dimethyl sulfate and base yields the N-methyl compound 2 whereas with trimethyloxonium fluoroborate the lactimether 3, a simple derivative of the unknown, 1,4-thiazepine is obtained. Compound 3 eliminates sulfur on heating in toluene, yielding 2-methoxy-quinoline. Oxidation of 3 with peracid produces the stable 1,1- dioxide (4).
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Wigfield, Donald C., et Sherry L. Perkins. « Oxidation of elemental mercury by hydroperoxides in aqueous solution ». Canadian Journal of Chemistry 63, no 2 (1 février 1985) : 275–77. http://dx.doi.org/10.1139/v85-045.

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The recent development of techniques in this and other laboratories has allowed the exploration of elemental mercury oxidations by compounds bearing the —O—O—H moiety. The peracid group appears to be a far more effective oxidant of mercury than the peroxide group, and both peracetic acid and m-chloroperbenzoic acid oxidize mercury at the trace level to both mercurous and mercuric forms.
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50

Bisseret, Philippe, Dominique Armspach, Serge Neunlist et Michel Rohmer. « Oxidation of the triterpenic hopane skeleton by peracids ». Tetrahedron Letters 31, no 45 (janvier 1990) : 6523–26. http://dx.doi.org/10.1016/s0040-4039(00)97107-7.

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