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Journal articles on the topic 'Oxidation of DL-methionine'

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Published: 5 June 2025

Last updated: 1 August 2025

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1

P., VANI, RAJA RAJESWARI T., and S. A. DlKSHTTULU L. "Kinetics and Mechanism of Oxidation of DL-Methionine by Potassium Bromate in Sulphuric Acid Medium." Journal of Indian Chemical Society Vol. 72, Dec 1995 (1995): 867–71. https://doi.org/10.5281/zenodo.5900770.

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Department of In rganic and Analytical Chemistry. School of Chemistry, Andhra University, Waltair-530 OOJ <em>Manuscript received I March 1994, accepted 28 June 1994</em> Kinetics and Mechanism of Oxidation of DL-Methionine by Potassium Bromate in Sulphuric Acid Medium

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2

Munna Lal Meena. "A kinetic and mechanistic study of oxidation of N-Acetyl-DL-Methionine by pyridinium chlorochromate in aqueous DMF medium." GSC Advanced Research and Reviews 20, no. 1 (2024): 484–94. http://dx.doi.org/10.30574/gscarr.2024.20.1.0311.

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The Kinetics of Oxidative transformation of N-Acetyl-DL-Methionine by pyridinium chlorochromate in aqueous DMF medium, containing perchloric acid has been studied at 40 ℃. The rate of reaction was found to be of first order dependence on PCC, N-Acetyl-DL-Methionine, and H+ ion Concentration. Michaelis–Menten type kinetics is observed respect to substrate. The increase in the rate of reaction with increase in acidity indicates the involvement of a protonated chromium(VI) species in the rate-determining step. The product of oxidation has been identified as N-Acetyl-DL-Methionine sulfoxide. The r

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3

Munna Lal Meena. "A kinetic and mechanistic study of oxidation of N-Acetyl-DL-Methionine by pyridinium chlorochromate in aqueous DMF medium." GSC Advanced Research and Reviews 20, no. 2 (2024): 146–56. http://dx.doi.org/10.30574/gscarr.2024.20.2.0304.

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The Kinetics of Oxidative transformation of N-Acetyl-DL-Methionine by pyridinium chlorochromate in aqueous DMF medium, containing perchloric acid has been studied at 40 ℃. The rate of reaction was found to be of first order dependence on PCC, N-Acetyl-DL-Methionine, and H+ ion Concentration. Michaelis–Menten type kinetics is observed respect to substrate. The increase in the rate of reaction with increase in acidity indicates the involvement of a protonated chromium(VI) species in the rate-determining step. The product of oxidation has been identified as N-Acetyl-DL-Methionine sulfoxide. The r

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4

Munna, Lal Meena. "A kinetic and mechanistic study of oxidation of N-Acetyl-DL-Methionine by pyridinium chlorochromate in aqueous DMF medium." GSC Advanced Research and Reviews 20, no. 1 (2024): 484–94. https://doi.org/10.5281/zenodo.13685185.

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The Kinetics of Oxidative transformation of N-Acetyl-DL-Methionine by pyridinium chlorochromate in aqueous DMF medium, containing perchloric acid has been studied at 40 ℃. The rate of reaction was found to be of first order dependence on PCC, N-Acetyl-DL-Methionine, and H<sup>+</sup> ion Concentration. Michaelis–Menten type kinetics is observed respect to substrate. The increase in the rate of reaction with increase in acidity indicates the involvement of a protonated chromium(VI) species in the rate-determining step. The product of oxidation has been identified as N-Acetyl-DL-Methionine

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5

Dupuis, Liliane, C. Linda Saunderson, Antoine Puigserver, and Patrick Brachet. "Oxidation of methionine and 2-hydroxy 4-methylthiobutanoic acid stereoisomers in chicken tissues." British Journal of Nutrition 62, no. 1 (1989): 63–75. http://dx.doi.org/10.1079/bjn19890008.

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Oxidation of dl-2-hydroxy 4-methylthiobutanoic acid (dl-HMB), dl-methionine (dl-MET) and l-methionine (l-MET) in chicken tissue homogenates was compared using 1-14C-labelled tracers. The pattern of oxidation of the substrates was similar at both low (0.7 mm) and high (20 mm) concentrations. The rate of conversion to 2-keto 4-methylthiobutanoic acid (KMB) was highest for dl-MET and lowest for l-MET in kidney, liver and intestinal mucosa. In breast muscle, rates for dl-MET and l-MET were similar at 0.7 mm, but dl-HMB showed the highest rate at 20 mm. Kidney contained the highest specific activit

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6

Saunderson, C. Linda. "Comparative metabolism of L-methionine, DL-methionine and DL-2-hydroxy 4-methylthiobutanoic acid by broiler chicks." British Journal of Nutrition 54, no. 3 (1985): 621–33. http://dx.doi.org/10.1079/bjn19850149.

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1. Metabolism, in broiler chicks, of DL-2-hydroxy 4-methylthiobutanoic acid (DL-HMB), DL-methionine and L-methionine was compared in vivo using 14C-labelled tracers.2. The distribution of L-[1-14C]methionine and DL-[1-14C]HMB in the major body tissues was examined for a period of 120 min after administration.3. The relative oxidation (14CO2, exhaled), excretion and incorporation into tissue protein of L-[l-14C]methionine, DL-[l-14C]methionine and DL-[1-14C]HMB were measured in fed birds.4. Tissue distribution of L-[1-14C]methionine and DL-[1-14C]HMB differed during 60–90 min following administ

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7

B Dharma Rao, B. Dharma Rao, M. Sridevi M Sridevi, and P. Vani P Vani. "Osmium (VIII) Catalysed Oxidation of DL-methionine by Alkaline Sodium Periodate - A Kinetic Study." Indian Journal of Applied Research 3, no. 5 (2011): 585–88. http://dx.doi.org/10.15373/2249555x/may2013/189.

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8

Poonam, Pohani, and K. Sharma Pradeep. "Kinetics and mechanism of the oxidation of DL-methionine by quinolinium fluorochromate." Journal of India Chemical Society Vol 81, Sep 2004 (2004): 757–61. https://doi.org/10.5281/zenodo.5832988.

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Department of Chemistry, J. N. V. University, Jodhpur-342 005, India <em>Manuscript received 22 September 2003, accepted 6 April 2004</em> The oxidation of methionine (Met) by quinolinium fluorochnnnate (QFC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding sulphoxide. The reaction is of first order with respect to QFC. Michaelis-Menten type kinetics was observed with respect to methionine. The reaction is catalysed by hydrogen ions. The hydrogen-ion dependence has the form : <em>k</em><sub>obs</sub> = <em>α</em> + <em>b</em> [H<sup>+</sup>]. The oxidation o

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9

P., Vani, Raja Rajeswari T., and S. A. Dikshitulu L. "Kinetics and mechanism of oxidation of DL-methionine by thallium(III) in perchloric acid medium." Journal of Indian Chemical Society Vol. 78, Jan 2001 (2001): 44–46. https://doi.org/10.5281/zenodo.5872865.

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Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, Visakhapatnam-530 003. India <em>Manuscript received 23 August 1999, revised 26 April 2000, accepted 17 August 2000</em> Kinetics and mechanism of oxidation of DL-methionine by thallium(III) in perchloric acid medium.

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10

D., C. Bilehal, M. Kulkarni R., and T. Nandibewoor S. "Kinetics of oxidative degradation of DL-methionine by cerium(IV) in aqueous perchloric acid media." Journal of Indian Chemical Society Vol. 80, Feb 2003 (2003): 91–94. https://doi.org/10.5281/zenodo.5836495.

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Post-Graduate Department of Studies in Chemistry, Karnatak University, Dharwad-580 003, India E-mail : karuni@bgl. vsnl.net. in <em>Manuscript received 12 June 2001, revised 3 October 2002, accepted 22 November 2002</em> The kinetics of oxidation of DL-methionine by cerium(IV) in aqueous perchloric acid solution have been studied spectrophotomctrically. The reaction shows first order kinetics in [Ce<sup>IV</sup>] and an apparent less than unit order dependence each in [DL-methionine] and [acid]. The data suggest that the oxidation proceeds via the formation of a complex between methionine and

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11

B., Dharma Rao, Baby Nirmala N., and Vani P. "Kinetics and mechanism of iridium(III) catalysed oxidation of DL-methionine by alkaline hexacyanoferrate(III)." Journal of Indian Chemical Society Vol. 90, Mar 2013 (2013): 365–71. https://doi.org/10.5281/zenodo.5769719.

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Department of Inorganic and Analytical Chemistry, School of Chemistry, Andhra University, Visakhapatnam-530 003, Andhra Pradesh, India <em>E-mail</em> : vani_chem@rediffmail.com <em>Manuscript received online 07 April 2012, revised 04 May 2012, accepted 22 May 2012</em> Iridium(lll) catalysed oxidation of DL-methionine by hexacyanoferrate(III) was studied spectrophotometrically in aqueous alkaline medium at 30 ± 0.1 °C at a constant ionic strength. A micro amount of iridium(III) was sufficient to catalyse the slow reaction between DL-methionine and hexacyanoferrate(III). The re

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12

Deeksha, Yajurvedi, Kumbhani S., Shashtri I., Baghmar M., and K. Sharma Pradeep. "Kinetics and mechanism of the oxidation of DL-methionine by quinolinium bromochromate." Journal of Indian Chemical Society Vol. 85, Apr 2008 (2008): 459–61. https://doi.org/10.5281/zenodo.5815056.

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Department of Chemistry, J. N. V. University, Jodhpur-342 005, Rajasthan, India <em>E-mail :</em> drpkvs27@yahoo.com R. D. National College, Bandra West, Mumbai University, Mumbai-400 050, India <em>Manuscript received 26 June 2007, revised 3 January 2008, accepted /0 January 2008</em> The oxidation of methionine (Met) by quinolinium bromochromate (QBC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding sulphoxide. The reaction is of first order with respect to each QBC and Met. The reaction is catalysed by hydrogen ions. The hydrogen-ion dependence has the form : <em>k</em><

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13

Pooja, Panchariya, Purohit T., Sharma D., Malani N., Kotai L., and K. Sharma Pradeep. "Kinetics and mechanism of the oxidation of DL-methionine by tetraethylammonium chlorochromate." Journal of Indian Chemical Society Vol. 89, Sep 2012 (2012): 1203–7. https://doi.org/10.5281/zenodo.5769196.

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Department of Chemistry, J. N. V. University, Jodhpur-342 005, Rajasthan, India <em>E-mail</em> : drpkvs27@yahoo.com lnstitute of Materials and Environmental Chemistry, RCNS, HAS, Budapest H-1025, Hungary <em>Manuscript received 02 November 2011, accepted 16 December 2011</em> The oxidation of DL-methionine (Met) by tetraethylammonium chlorochromate (TEACC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding sulphoxide. The reaction is of first order with respect to both TEACC and Met. The reaction is catalysed by hydrogen ions. The hydrogen-ion dependence has the form : <em>k

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14

Pramila Naga, Kamla, Priyanka Purohit, and Vinita Sharma. "OXIDATION OF DL-METHIONINE, A SULFUR-CONTAINING AMINO ACID BY DIETHYL AMMONIUM CHLOROCHROMATE." Rasayan Journal of Chemistry, Special (2021): 217–23. http://dx.doi.org/10.31788/rjc.2021.1456587.

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Oxidation of DL-methionine (Met), sulphur-containing amino acid by Diethylammonium chlorochromate (DEACC) in dimethylsulphoxide (DMSO) is leading to produce its consecutive sulphoxide. The reaction is of first-order w. r. t. methionine and DEACC. The addition of an acid enhance the reaction rate, the effect of acidity is expressed by the relation kobs = a + b [H+ ]. The rate of the oxidation of methionine is recorded in 19 non aqueous solvent medium. The effect of solvent medium is was studied in nineteen different organic solvents. The solvent effect is evaluated by the models of Kamlet and S

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15

Pandey, Dinesh, and Seema Kothari. "Kinetics and Mechanism of the Oxidation of Dl-Methionine by Benzimidazolium Dichromate." Progress in Reaction Kinetics and Mechanism 34, no. 3 (2009): 199–209. http://dx.doi.org/10.3184/146867809x466221.

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The oxidation of DL-methionine (MT) by benzimidazolium dichromate (BIDC), in dimethyl sulfoxide, leads to the formation of the corresponding sulfoxide. The reaction is first order with respect to BIDC. Michaelis - Menten type kinetics were observed with respect to MT. The reaction is catalysed by hydrogen ions and the dependence is of the form kobs = k‘[H+]. The rate of oxidation of MT was determined in 19 organic solvents. An analysis of the solvent effect by solvatochromic equations indicated that though both the anion- and cation-solvating powers of the solvent contribute to the observed so

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16

P., K. Satpathy, C. Dash G., Acbarya S., and Mohanty P. "Kinetics and mechanism of oxidation of DL-methionine by Keggin-type 12-tungstocobaltate(III) in aqueous acetic acid medium." Journal of Indian Chemical Society Vol. 83, Sep 2006 (2006): 891–94. https://doi.org/10.5281/zenodo.5829977.

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Department of Chemistry, Utkal University, Vani Vihar, Bhubaneswar-751 004, Orissa, India Hydro- & Electrometallurgy Department, Regional Research Laboratory (CSIR), Bhubaneswar-751 013, Orissa,India <em>Manuscript received 20 October 2005, revised 4 May 2006, accepted 26 June 2006</em> The kinetics of the reaction of DL-methionine with 12-tungstocobaltate(III) has been studied over the range of 8.4 ≤ 10<sup>3 </sup>[DL-methionine] ≤ 14.0, 3.0 ≤ pH ≤ 5.0 and 20 ≤ T ≤ 35 °C in aqueous acetic acid medium. The electron transfer reaction showed first-order dependence

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17

Al-Maythalony, Bassem A., Mohamed I. M. Wazeer, Anvarhusein A. Isab, and Saeed Ahmad. "A study of [Au(ethylenediamine)Cl2]Cl interaction with L-methionine and DL-seleno-methionine by1H and13C NMR spectroscopy." Spectroscopy 24, no. 5 (2010): 567–75. http://dx.doi.org/10.1155/2010/827107.

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The interaction of [Au(en)Cl2]Cl with L-methionine (Met) and DL-seleno-methionine (Se-Met) was carried out in D2O solution at ∼pH 3.8.13C NMR spectra were interpreted by comparison with the spectra recorded after the reaction of Met or Se-Met with HAuCl4and also after oxidation by H2O2. Reactions of [Au(en)Cl2]Cl with Met and Se-Met were found to proceed through the exchange of chloride ligands from complex with Met or Se-Met. Gold(III) reduction takes place during the reaction andenligand was released from [Au(en)Cl2]Cl complex.

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18

Maede, Yoshimitsu, Takuo Hoshino, Mutsumi Inaba, and Shigeo Namioka. "Methionine toxicosis in cats." American Journal of Veterinary Research 48, no. 2 (1987): 289–92. https://doi.org/10.2460/ajvr.1987.48.02.289.

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SUMMARY Cats given dl-methionine (1 g/kg of body weight/day) developed severe hemolytic anemia with marked increase of methemoglobin (MetHb) concentration and Heinz-body formation at treatment-day 6 to 10. Cats fed 0.5 g of me-thionine/kg for 52 days had a moderate Heinz-body hemolytic anemia with methemoglobinemia at treatment days 17 to 31, but thereafter recovered from the anemia despite continuation of methionine feeding, indicating an adaptation of the cats. In vitro, significant (P < 0.01) increases of MetHb concentration and Heinz-body formation were observed when rbc were incubated

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19

Patel, M., L. Mathur, K. Jha, A. Kothari, I. Shastri, and Pradeep K. Sharma. "Kinetics and Mechanism of the Oxidation of DL-Methionine by Tetrakis(Pyridine)silver Dichromate." Asian Journal of Chemistry 25, no. 5 (2013): 2779–82. http://dx.doi.org/10.14233/ajchem.2013.13887.

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20

Giannenas, Ilias, Stelios Vasilopoulos, Stella Dokou, et al. "Effects of dietary supplementation with herbal extract as methionine replacer on growth performance, meat composition, oxidative stability and liver gene expression in broiler chickens." Archiva Zootechnica 25, no. 2 (2022): 39–62. http://dx.doi.org/10.2478/azibna-2022-0013.

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Abstract In the present study, an herbal feed additive was tested for partial-to-complete replacement of synthetic methionine in poultry diets, along with its effects on performance, breast and thigh meat chemical composition, oxidative stability during refrigerated storage and the expression of five target genes in liver. In a 35 days trial, 600 one-day-old male chicks were randomly allocated to 4 groups with 10 replicates. Birds in the control group were fed a regular maize–soybean-based diet that covered DL-methionine needs while the second group (Meth40) was similar to control but containe

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Bijaylaxmi, Mohanty, Behera J., Mohanty P., Acharya S., K. Patnaik A., and P. Das S. "Kinetics and mechanism of oxidation of L-cysteine and DL-methionine by morpholinium chlorochromate in aqueous acidic medium." Journal of Indian Chemical Society Vol. 88, Oct 2011 (2011): 1561–66. https://doi.org/10.5281/zenodo.5790631.

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P.G. Department of Chemistry, Utkal University, Bhubaneswar-751 004, Orissa, India IMMT, Bhubaneswar, Orissa, India P.G. Department of Chemistry, Khallikote (Autonomous) College, Berhampur-760 001, Orissa, India <em>E-mail</em> : ajaypattanaik_kumar@yahoo.co.in P.G. Department of Chemistry, Ravenshaw University, Cuttack-753 003, Orissa, India <em>Manuscript received 25 November 2010, revised 09 March 2011, accepted 17 March 2011</em> The kinetics of the redox reaction of MCC (morpholinium chlorochromate) with L-cysteine and DL-methionine have been studied over the range 2.0 ≤ 10<sup>3</sup>

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22

Vani, P., T. Raja Rajeswari, and L. S. A. Dikshitulu. "Kinetics and mechanism CF oxidation of DL-methionine by mangenese(III) in sulfuric acid medium." Reaction Kinetics & Catalysis Letters 52, no. 1 (1994): 175–82. http://dx.doi.org/10.1007/bf02129866.

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23

Pokoo-Aikins, Anthony, Jennifer Rumsey Timmons, Byungrok Rok Min, et al. "Effects of Varying Levels of Dietary DL-Methionine Supplementation on Breast Meat Quality of Male and Female Broilers." Poultry 1, no. 1 (2022): 40–53. http://dx.doi.org/10.3390/poultry1010005.

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This study evaluated the effects of feeding varying levels of dietary DL-methionine (MET) supplementation on breast meat (BM) quality of broilers of different sex. The 1-day-old, sexed chicks (Ross 708, 1552) were randomly allocated into four groups (each with 4 replicates) and were raised with diets supplemented with 0, 0.5, 1, or 2 g MET/kg of feed to a common weight (2.72 kg). Color, pH, drip loss (DL), water-holding capacity, moisture uptake, cooking yield (CY), texture, total antioxidant capacity (TAC), and lipid oxidation (LO) were determined using BM samples harvested 24 h postmortem. T

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Rao, B. Dharma, T. V. N. Partha Sarathi, N. Annapurna, and P. Vani. "Mechanistic studies of ruthenium(III)-catalyzed oxidation of DL-methionine by hexacyanoferrate(III) in an alkaline medium." Journal of Sulfur Chemistry 32, no. 3 (2011): 263–72. http://dx.doi.org/10.1080/17415993.2011.573558.

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Thabaj, K. A., S. A. Chimatadar, and S. T. Nandibewoor. "Dual mechanism of oxidation of dl-methionine by diperiodatoargentate(III) in aqueous alkaline medium (stopped flow technique)." Journal of Molecular Structure 882, no. 1-3 (2008): 88–95. http://dx.doi.org/10.1016/j.molstruc.2007.09.013.

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Mažeika K, Pakštas V, Melvydas V, and Jagminas A. "Amino acid-assisted synthesis and characterization of zero-Valente iron nanoparticles for research on the bio-interactions with yeast." GSC Advanced Engineering and Technology 4, no. 1 (2022): 001–11. http://dx.doi.org/10.30574/gscaet.2022.4.1.0043.

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The wet synthesis of uniformly sized zero-Valente iron nanoparticles (NPs) for application in nanomedicine and biology is still a challenging because of magnetic interaction, oxidation and corrosion. In this study, various Fe-containing NPs were synthesized using amino acids as their size stabilizing agents to investigate their bio-interactions with Metschnikowia spp. yeast strains. For this, D-glutamic, DL-cysteine, DL-methionine, and taurine amino acids were tested. In this way, NPs in size from several to 40 nm, composed of a-Fe0, a-FeB, Fe2O3 and lepidocrocite, g-FeOOH, were synthesized an

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S., ANANDA, S. RANGAPPA K., and S. MAHADEVAPPA D. "Oxidation of Methionine by Sodium N-Bromobenzenesulphonamide in Aqueous Solution. A Kinetic and Mechanistic Study." Journal of Indian Chemical Society Vol. 63, June 1986 (1986): 581–85. https://doi.org/10.5281/zenodo.6256617.

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Department of Chemistry, University of Mysore, Manasagangotri, Mysore-570 006 <em>Manuscript received 1 July 1985, revised 17 February 1986, accepted 2 April 1986</em> Kinetics of oxidation of DL-methionine (Mt) in the presence of HCI, HCIO<sub>4</sub>, H,SO<sub>4</sub> and NaOH by sodium <em>N</em>-bromobenzenesulphonamide (BAB) have been investigated at 40° (and 30° in alkaline medium). The rate law is identical in the three acids,                                  \(- {d [BAB {]} \over dt}\)= k[

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Zeitz, Johanna O., Tamara Ehbrecht, Anne Fleischmann, et al. "Effect of DL-Methionine Supplementation on Tissue and Plasma Antioxidant Status and Concentrations of Oxidation Products of Cholesterol and Phytosterols in Heat-Processed Thigh Muscle of Broilers." Animals 10, no. 11 (2020): 2050. http://dx.doi.org/10.3390/ani10112050.

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In this study, the hypothesis that supplementation with methionine (Met) as DL-Met (DLM) in excess of the National Research Council (NRC) recommendations improves the antioxidant system in broilers was investigated. Day-old male Cobb-500 broilers (n = 72) were divided into three groups which were fed a control diet or diets supplemented with two levels of DLM in which the concentrations of Met + Cys exceeded the recommendations of NRC by 15–20% (group DLM 1) or 30–40% (group DLM 2), respectively. The three groups of broilers did not show differences in body weight gains, feed intake, and feed

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Martín-Venegas, Raquel, M. Teresa Brufau, Yves Mercier, Pierre-André Geraert, and Ruth Ferrer. "Intestinal cell conversion ofdl-2-hydroxy-(4-methylthio)butanoic acidin vitro: dietary up-regulation by this methionine precursor." British Journal of Nutrition 106, no. 3 (2011): 350–56. http://dx.doi.org/10.1017/s0007114511000183.

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dl-2-Hydroxy-(4-methylthio)butanoic acid (HMTBA) is a synthetic source of dietary methionine (Met) widely used in poultry nutrition. HMTBA is transported in the intestinal epithelium by the monocarboxylate transporter 1, after which its biological utilisation relies on its conversion tol-Met. This process involves stereospecific HMTBA oxidation to 2-keto-(4-methylthio)butanoic acid (KMB) and transamination tol-Met. In the present study, we examined HMTBA conversion tol-Met, further incorporation into cellular proteins and the regulation of both processes by HMTBA supplementation in differentia

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Subash-Babu, Pandurangan, Nouf Al-Numair, Tahani Almuzaini, Jegan Athinarayanan та Ali Abdullah Alshatwi. "Punicalagin and Ketogenic Amino Acids Loaded Organic Lipid Carriers Enhance the Bioavailability, Mitochondrial β-Oxidation, and Ketogenesis in Maturing Adipocytes". Nanomaterials 12, № 3 (2022): 368. http://dx.doi.org/10.3390/nano12030368.

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The identification of lipolytic bioactive compounds via the functional stimulation of carbohydrate response element-binding protein-1 (CREBp-1) and AMP-activated protein kinase (AMPK) is most warranted. Nano lipid carriers (NLCs) are currently being considered within drug delivery development as they facilitate controlled drug release and have intracellular bioavailability after encapsulating the active principles with lipid matrix. The present study has been designed to synthesize punicalagin, and ketogenic amino acids (KAA) loaded with organic lipid carriers to optimize the liposome-assisted

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Swennen, Quirine, Pierre-André Geraert, Yves Mercier, et al. "Effects of dietary protein content and 2-hydroxy-4-methylthiobutanoic acid ordl-methionine supplementation on performance and oxidative status of broiler chickens." British Journal of Nutrition 106, no. 12 (2011): 1845–54. http://dx.doi.org/10.1017/s0007114511002558.

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Besides its typical role as an amino acid in protein synthesis, methionine is an important intermediate in methylation reactions. In addition, it can also be converted to cysteine and hence plays a role in the defence against oxidative stress. The present study was conducted to investigate further the role ofdl-methionine (DLM) and its hydroxy analogue,dl-2-hydroxy-4-methylthiobutanoic acid (DL-HMTBA), on zootechnical performance and oxidative status of broiler chickens. Male broiler chickens were reared on two diets differing in crude protein (CP) content (low-protein, 18·3 %v.high-protein, 2

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Smith, Jenifer, Marinela Colina, Gilberto Colina, and Brinolfo Montilla. "DESARROLLO DE UN MÉTODO PARA LA ESPECIACIÓN DE SELENIO EN MUESTRAS DE CERVEZA." Bases de la Ciencia 3, no. 1 (2018): 1–24. https://doi.org/10.5281/zenodo.6624445.

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RESUMEN Se desarrolló un método por cromatografía iónica (CI) para la especiación de selenio en muestras líquidas de cerveza, empleando H2O2 y luz UV como sistema oxidante. Las especies aniónicas de selenio fueron separadas utilizando una columna aniónica AS4A y un guarda columna AG4 Dionex, la fase móvil empleada fue de 1,7 mM NaHCO3/1,8 mMNa2CO3, para la cuantificación se empleó un detector de conductividad iónica. El tiempo de retención del ión Se(IV) fue de 7,8 min y para Se(VI) de 15,7 min. L

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Oladejo, Emmanuel, Md Hasan, Susan Sotak, et al. "Effects of Dietary Supplementation of DL-Methionine or DL-Methionine Hydroxyl Analogue (MHA-Ca) on Growth Performance and Blood and Liver Redox Status in Growing Pigs." Animals 14, no. 23 (2024): 3397. http://dx.doi.org/10.3390/ani14233397.

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Oxidative stress impairs pigs’ health and production performance. This study examined the effects of level and source of methionine (Met) supplementation against the diquat-induced oxidative stress in pigs. Forty growing barrows were randomly assigned to four groups. Groups 1 and 2 received a basal diet that was adequate in energy and nutrients (Diet 1), Group 3 received a DL-Met-supplemented diet, and Group 4 received an MHA-Ca-supplemented diet. After 3 weeks of feeding (Phase 1), pigs were injected with 10 mL saline (Group 1) or 10 mg/kg-BW diquat in 10 mL saline (Groups 2, 3, and 4), and t

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de Sousa, Fabiana Cristina Belchior, Ana Paula Del Vesco, Vittor Zancanela, et al. "Effects of methionine as free amino acid and dipeptide on productive efficiency and meat quality of broilers under acute and chronic heat stress." Animal Production Science 62, no. 4 (2021): 342–57. http://dx.doi.org/10.1071/an20592.

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Context Methionine in the form of free amino acid has been widely studied in broilers challenged by heat stress (HS). However, the effects of methionine dipeptide in broilers subjected to HS are not known. Aims To evaluate the effects of methionine as free amino acid and dipeptide on the performance, oxidative status, plasma parameters and meat quality of broilers subjected to acute and chronic HS. Methods Broilers were evaluated at the following three experimental periods: 24 h of evaluation (21–22 days of age); 10 days of evaluation (22–32 days of age); and 20 days of evaluation (22–42 days

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Magdaleno, Anahí, Brian Suárez Mantilla, Sandra C. Rocha, Elizabeth M. F. Pral, and Ariel M. Silber. "The Involvement of Glutamate Metabolism in the Resistance to Thermal, Nutritional, and Oxidative Stress in Trypanosoma cruzi." Enzyme Research 2011 (April 10, 2011): 1–13. http://dx.doi.org/10.4061/2011/486928.

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The inhibition of some glutamate metabolic pathways could lead to diminished parasite survival. In this study, the effects of L-methionine sulfoximine (MS), DL-methionine sulfone (MSO), and DL-methionine sulfoxide (MSE), three glutamate analogs, on several biological processes were evaluated. We found that these analogs inhibited the growth of epimastigotes cells and showed a synergistic effect with stress conditions such as temperature, nutritional starvation, and oxidative stress. The specific activity for the reductive amination of α-ketoglutaric acid, catalyzed by the NADP+-linked glutamat

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Jagin Parmar, Ervilla. "AN EXPERIMENTAL STUDY ON ALBINO RATS TO COMPARE THE HEPATOPROTECTIVE EFFECT OF ORALLY ADMINISTERED DL-METHIONINE AND N-ACETYLCYSTEINE ON THE LIVER INJURY CAUSED BY POSITIVE CONTROL DRUG DICLOFENAC SODIUM." International Journal of Advanced Research 11, no. 03 (2023): 167–77. http://dx.doi.org/10.21474/ijar01/16403.

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Introduction: Liver, main organ for biotransformation of drugs, during which most of the drugs which are lipophilic in nature are made hydrophilic by the biochemical processes in the liver cells resulting into water-soluble products which get excreted in urine or bile. Adverse drug reactions (ADRs) pertaining to liver, can be of mainly two types, predictable or dose dependent and idiosyncratic. To counter the oxidative stress and cellular damage, several antioxidant enzymes have been developed including superoxide dismutase (SOD), Glutathione peroxidase and catalase, that detoxify the reactive

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Lingens, Jan Berend, Amr Abd El-Wahab, Juliano Cesar de Paula Dorigam, et al. "Evaluation of Methionine Sources in Protein Reduced Diets for Turkeys in the Late Finishing Period Regarding Performance, Footpad Health and Liver Health." Agriculture 11, no. 9 (2021): 901. http://dx.doi.org/10.3390/agriculture11090901.

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Footpad dermatitis and hepatic lipidosis are health problems in fattening turkeys where a positive influence of higher methionine content in feed is discussed. The effects of the methionine supplements DL-methionine (DLM) and liquid methionine hydroxyl analogue free acid (MHA-FA) under the aspect of low protein diets were investigated in this study based on performance parameters, footpad health, liver health and oxidative stress. In this study, 80 female turkeys (B.U.T. Big 6) of 63 day-old, were randomly assigned to four groups characterising a 2 × 2 factorial design with five replicates eac

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Magnuson, Andrew, Guanchen Liu, Tao Sun, Samar Tolba, Rose Whelan, and Xingen Lei. "128 Additional dietary DL-methionine affects tissue redox and inflammation status of broiler chicks in response to high stocking density." Journal of Animal Science 97, Supplement_3 (2019): 111–12. http://dx.doi.org/10.1093/jas/skz258.229.

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Abstract We determined if 30% extra supplemental DL-methionine affected oxidative and inflammatory responses of broilers stocked at a high density. A total of 560 day-old male Cornish cockerel chicks were divided into 4 groups: 2 stocking densities (2.9 and 3.8 kg/ft2) and 2 methionine supplementations (grower: 2.90 or 3.77 g/kg and finisher: 2.60 or 3.38 g/kg). Chicks were fed the same corn-soy starter diet and then respective experimental diets (grower: 6.4 g SAA/kg, finisher: 5.9 g SAA/kg, n = 10 pens/treatment). Blood and tissues (3 chicks/pen) were sampled at the end of each period. Data

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Eugenio, Francis Amann, Marta Isabel Gracia-Lorenzo, Dolores I. Batonon-Alavo, and Yves Mercier. "383 Performance of piglets in response to graded dietary supplementation of sulfur amino acids using either hydroxy-methionine or DL-Methionine during the post-weaning period." Journal of Animal Science 102, Supplement_3 (2024): 251–52. http://dx.doi.org/10.1093/jas/skae234.289.

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Abstract Providing piglets with their precise nutritional need is critical during the stressful post-weaning period. Methionine (Met), a sulfur-containing amino acid, has a crucial role in piglet growth and health. Stressful conditions may increase Met demand due to its involvement in maintaining redox balance via downstream metabolites such as glutathione. There are different sources of supplementary Met for pigs such as DL-methionine (DL-Met) and hydroxy-methionine. The latter comes mostly as an acidic liquid form (OH-Met) and to a lesser degree as a powder calcium-salt (OH-Met-Ca). This stu

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Skřivan, M., M. Englmaierová, G. Dlouhá, I. Bubancová, and V. Skřivanová. "High dietary concentrations of methionine reduce the selenium content, glutathione peroxidase activity and oxidative stability of chicken meat." Czech Journal of Animal Science 56, No. 9 (2011): 398–405. http://dx.doi.org/10.17221/1289-cjas.

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Three experiments (EXP) were conducted using two hundred seventy male chicks Ross 308 in each (90 cockerels per treatment; 3 replications, 30 chickens per pen) for 42, 38 and 35 days. The basal diets (treatment 1) for three EXPs contained the identical ingredients, and the concentration of selenium (Se), methionine (Met) and total sulphur amino acids (TSAA) in the control diet was 0.11 mg/kg, 5.65 g per kg and 9.25 g/kg, respectively. Chicks in dietary treatment 2 were fed a basal diet supplemented with 0.3&nbsp;mg/kg of Se (EXP 1, 2 and 3) and in dietary treatment 3 they were fed a basal

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Zeitz, Johanna O., Anne Fleischmann, Tamara Ehbrecht, et al. "Effects of supplementation of DL-methionine on tissue and plasma antioxidant status during heat-induced oxidative stress in broilers." Poultry Science 99, no. 12 (2020): 6837–47. http://dx.doi.org/10.1016/j.psj.2020.08.082.

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Okari, Karibo Amakiri, Owo, Gogo James, and Kpomah, Enyohwo Dennis. "Therapeutic Potential of Various Edible Vegetable Extracts for Managing DL-methionine-induced Hyperhomocysteinemia and Oxidative Stress in Wistar Rats." Asian Basic and Applied Research Journal 7, no. 1 (2025): 184–92. https://doi.org/10.56557/abaarj/2025/v7i1165.

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Wu, Pei, Yuening Su, Lin Feng, et al. "Optimal DL-Methionyl-DL-Methionine Supplementation Improved Intestinal Physical Barrier Function by Changing Antioxidant Capacity, Apoptosis and Tight Junction Proteins in the Intestine of Juvenile Grass Carp (Ctenopharyngodon idella)." Antioxidants 11, no. 9 (2022): 1652. http://dx.doi.org/10.3390/antiox11091652.

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The present study was a part of a larger research project that aimed to investigate the effects of Met-Met supplementation on fish growth and intestinal health. This study mainly focused on the relationship between dietary Met-Met and intestinal physical barrier function in fish. Seven iso-nitrogenous diets supplemented with 2.50 g/kg DL-methionine (DL-Met) and six graded levels of Met-Met (0.00, 0.79, 1.44, 1.84, 2.22, and 2.85 g/kg) were used to feed juvenile grass carp for 10 weeks, after which a 14-day Aeromonas hydrophila challenge test was performed. The results indicated that optimum le

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Micovic, Zarko, Sanja Kostic, Slavica Mutavdzin, et al. "The effects of acutely and subchronically applied DL-methionine on plasma oxidative stress markers and activity of acetylcholinesterase in rat cardiac tissue." Vojnosanitetski pregled 77, no. 2 (2020): 165–73. http://dx.doi.org/10.2298/vsp171213055m.

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Background/Aim. Chronically induced hypermethioninemia leads to hyperhomocysteinemia which causes oxidative stress, atherogenesis, neurodegeneration and cancer. However, little is known about the acute and subchronic effects of DL-methionine (Met). The aim of study was to assess the effects of acutely and subchronically applied Met on oxidative stress parameters in rat plasma [enzymes: catalase (CAT), glutathione peroxidise (GPx), superoxide dismutase (SOD) and index of lipid peroxidation, malondialdehyde (MDA)], and acetylcholinesterase (AChE) activity in rat cardiac tissue. Methods. The enzy

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Blavi, Laia, David Solà-Oriol, Pol Llonch, Sergi López-Vergé, Susana María Martín-Orúe, and José Francisco Pérez. "Management and Feeding Strategies in Early Life to Increase Piglet Performance and Welfare around Weaning: A Review." Animals 11, no. 2 (2021): 302. http://dx.doi.org/10.3390/ani11020302.

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The performance of piglets in nurseries may vary depending on body weight, age at weaning, management, and pathogenic load in the pig facilities. The early events in a pig’s life are very important and may have long lasting consequences, since growth lag involves a significant cost to the system due to reduced market weights and increased barn occupancy. The present review evidences that there are several strategies that can be used to improve the performance and welfare of pigs at weaning. A complex set of early management and dietary strategies have been explored in sows and suckling piglets

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Zhao, Depeng, Yushi Shi, Xia Long, Qisong Tan, Jinlin Yang, and Hui Li. "Effects of Dendrobium nobile on antioxidant capacity, hormone levels, testicular metabolism, and reproductive performance of aged roosters." PLOS One 20, no. 5 (2025): e0322853. https://doi.org/10.1371/journal.pone.0322853.

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Oxidative stress is a major cause of semen quality decline in old roosters. Dendrobium nobile Lindl (DNL), a Chinese herbal medicine, exhibits excellent antioxidant activity. Therefore, the present study aimed to investigate the effects of dietary DNL supplementation on semen quality, antioxidant capacity, reproductive hormone levels, and testicular tissue structure in aged roosters. This study further aimed to elucidate the potential mechanism for improving reproductive performance. Thus, the expression of antioxidant defense system-related genes was verified, and metabolomic analysis was per

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Pavlova, Natalia S., Galina I. Pavlenko, Dmitry A. Drozdov, Natalya A. Brichko, and Lyubov L. Zakharova. "The effect of feed additive Phytodoc® Carnitine on the blood parameters of white rats during experimental cadmium and lead intoxication." Veterinariya, Zootekhniya i Biotekhnologiya 12/1, no. 132 (2024): 62–69. https://doi.org/10.36871/vet.zoo.bio.202412106.

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Cadmium and lead practically do not decompose in the environment, entering the body of farm animals with water and feed, accumulate in organs and tissues, having a negative impact, reduce productivity, induce a number of diseases, including long-term consequences. Thus, with an increase in the level of toxic elements in the environment, the problem of reducing their negative effects and obtaining safe products becomes more acute. To reduce the accumulation and negative effects of cadmium and lead, the use of biologically active substances that reduce oxidative stress, damage active groups of p

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Courtois, F., I. Suc, C. Garofalo, M. Ledoux, E. Seidman, and E. Levy. "Iron-ascorbate alters the efficiency of Caco-2 cells to assemble and secrete lipoproteins." American Journal of Physiology-Gastrointestinal and Liver Physiology 279, no. 1 (2000): G12—G19. http://dx.doi.org/10.1152/ajpgi.2000.279.1.g12.

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Although oxidative stress has been implicated in development of gut pathologies, its role in intestinal fat transport has not been investigated. We assessed the effect of Fe2+-ascorbate-mediated lipid peroxidation on lipid synthesis, apolipoprotein biogenesis, and lipoprotein assembly and secretion. Incubation of postconfluent Caco-2 cells with iron(II)-ascorbate (0.2 mM/2 mM) in the apical compartment significantly promoted malondialdehyde formation without affecting sucrase activity, transepithelial resistance, DNA and protein content, and cell viability. However, addition of the oxygen radi

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"Oxidation Kinetics of DL Methionine, a Sulphur containing Amino acid by Tripropylammonium Chlorochromate." Journal of Chemical, Biological and physical sciences 15, no. 2 (2025). https://doi.org/10.24214/jcbps.a.15.2.15664.

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"Oxidation of DL - Methionine by Imidazolium Chlorochromate and Benzimidazolium Chlorochromate in Aqueous Perchlorate Medium." Chemical Science Transactions, December 15, 2013. http://dx.doi.org/10.7598/cst2014.278.

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