EPR studies of gamma-irradiated L-alanine ethyl ester hydrochloride, L-arginine and alanyl-L-glutamine

Aydin, Murat; Başkan, M. Halim; Yakar, Sedat; Ulak, F.Şadan; Aydinol, M.; Aydinol, Belkıs; Büyüm, Muharrem

doi:10.1080/10420150701552642

Cited by 15 publications

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“…The g value measured from the spectrum of DL-asparagine monohydrate is g= 2.0024. It can be expressed that the g value of the radical discussed here in agreement with the literature data [28][29][30][31]. The simulated spectra in Figure 3c…”

Section: Resultssupporting

confidence: 88%

Gama Işınları ile Işınlanmış Amino Asit Türevlerinin EPR ve Simulasyon Metodu ile İncelenmesi

Işıkcı¹,

Osmanoğlu²

2020

El-Cezeri Fen Ve Mühendislik Dergisi

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Amino acids of solid state DL-beta-amino-n-butyric acid (BABA), Triethylene tetramine hexa acetic acid (TTHAA) and DL-Asparagine monohydrate (DLAMH) have been investigated by Electron Paramagnetic Resonance Spectroscopy. Free radicals formed in irradiated powder crystals have been examined at temperatures of 300 Kelvin. The structure of the free radical and the hyperfine structure constants were reported. The free radicals formed in the compounds were found to be stable for three months, fifteen days and two months respectively. The obtained results are in agreement with the literature values.

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Section: Resultssupporting

confidence: 88%

Gama Işınları ile Işınlanmış Amino Asit Türevlerinin EPR ve Simulasyon Metodu ile İncelenmesi

Işıkcı¹,

Osmanoğlu²

2020

El-Cezeri Fen Ve Mühendislik Dergisi

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“…2b spectrum. Another spectrum was observed in γ-irradiated L-alanine ethyl ester hydrochloride (LAEEHCl) (23). The magnetic parameters of paramagnetic center induced in γ-irradiated LAEEHCl are smaller than our experimental results.…”

Section: Resultscontrasting

confidence: 72%

Katı durumdaki glycine tertbutyl ester hydrochloride and L-α-alanin eter ester’de oluşan serbest radikallerin similasyon metodu ile incelenmesi

Osmanoğlu¹

2020

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The paramagnetic centers formed in glycine tert-butyl ester hydrochloride and L-α-alanine ethyl ester after irradiated was determined using EPR spectroscopy. The EPR spectra of the samples were attributed to the H 2 NĊHCO 2 C(CH 3 ) 3 .HCl and CH 3 ĊHCOCH 2 CH 3 radicals, respectively. The magnetic parameters obtained from the spectra were evaluated. The spectra were seen to be stable for more than 2 months at 300 K. Magnetic parameters and the electronic structure of the paramagnetic centers (radicals) were determined with a simulation method.

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“…Similar EPR spectrum and intensity distribution were observed for the gamma-irradiated L-arginine powders at room temperature [16]. In this case, the same radical produced by the abstraction of one hydrogen atom form the same carbon atom.…”

Section: Resultssupporting

confidence: 59%

Study of the structure of free radicals in gamma: irradiated amino acid derivatives

Aydin¹

2010

Braz. J. Phys.

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Electron paramagnetic resonance spectroscopy has been used for the study of the free radicals produced in the powders of L-arginine monohydrochloride, ala-ala and DL-β-leucine gamma-irradiated at room temperature.The structures of the radicals formed in compounds were determined as NH 2 (NH)NHĊHCH 2 CH 2 CH(NH 2 )COOH, CH 3Ċ HCOOH and (CH 3 ) 2Ċ CH(NH 2 )CH 2 COOH respectively. The paramagnetic species were found to be stable at room temperature more than three months. It was determined that unpaired electron interacted with nearby protons and 14 N nucleus in these radicals. The g values of the radicals and the hyperfine structure constants of the free electron were also measured. These results were compared with the earlier studies in amino acid and derivatives radicals and discussed.

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EPR studies of gamma-irradiated L-alanine ethyl ester hydrochloride, L-arginine and alanyl-L-glutamine

Cited by 15 publications

References 0 publications

Gama Işınları ile Işınlanmış Amino Asit Türevlerinin EPR ve Simulasyon Metodu ile İncelenmesi

Gama Işınları ile Işınlanmış Amino Asit Türevlerinin EPR ve Simulasyon Metodu ile İncelenmesi

Katı durumdaki glycine tertbutyl ester hydrochloride and L-α-alanin eter ester’de oluşan serbest radikallerin similasyon metodu ile incelenmesi

Study of the structure of free radicals in gamma: irradiated amino acid derivatives

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