ESR dosimetry and radical kinetics of gamma-irradiated propyl gallate

被引：11

作者：

Bal, M. O. ^{[1
]}

Tuner, H. ^{[1
]}

机构：

[1] Balikesir Univ, Fac Art & Sci, Dept Phys, TR-10145 Cagis, Balikesir, Turkey

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2014年 / 1071卷

关键词：

Electron Spin Resonance (ESR); Dosimetry; Irradiation; Radical; Propyl gallate; RADIATION-PROCESSED FOOD; EPR RESPONSE FUNCTION; GALLIC ACID; BUTYLATED HYDROXYTOLUENE; TARTARIC ACID; RESONANCE; IDENTIFICATION; SPECTROSCOPY; ANTIOXIDANTS; FEATURES;

D O I：

10.1016/j.molstruc.2014.04.083

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Propyl gallate (PG) is one of the most effective synthetic antioxidant. In the present work, the effects of gamma radiation on powder PG were investigated by Electron Spin Resonance (ESR) spectroscopy. The experimental spectra of irradiated PG were found to be consisted of two different overlapped spectra that originated for different radical species. Structural and kinetic features of the radicals which are responsible for experimental ESR spectrum were explored through the variations of the signal intensity with applied microwave power, variable sample temperature, and high-temperature annealing studies. Activation energies of the radical species were determined using the data derived from annealing studies. The dosimetric potential was also investigated in the range of 0.5-25.0 kGy. It was found that the G value of PG is about 0.35. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：123 / 127

页数：5

共 41 条

[1] Gamma-rays interactions on optical, FTIR absorption and ESR spectra of 3d transition metals-doped sodium silicophosphate glasses [J].

Abdelghany, A. M. ;

ElBatal, H. A. .

JOURNAL OF MOLECULAR STRUCTURE, 2014, 1067 :138-146

[2]

Barr D., 1998, 6 BRUK BIOSP

[3] Final report on the amended safety assessment of Propyl Gallate [J].

Becker, Lillian .

INTERNATIONAL JOURNAL OF TOXICOLOGY, 2007, 26 :89-118

[4] IDENTIFICATION OF IRRADIATED FOODS - METHODS, DEVELOPMENT AND CONCEPTS [J].

BOGL, KW .

APPLIED RADIATION AND ISOTOPES, 1989, 40 (10-12) :1203-1210

[5] ESR and TL studies of irradiated Anatolian laurel leaf (Laurus nobilis L.) [J].

Cam, Semra Tepe ;

Aydas, Canan ;

Engin, Birol ;

Yuce, Ulku Rabia ;

Aydin, Talat ;

Polat, Mustafa .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 2012, 167 (06) :410-420

[6] Determination of free radical on polycrystal of 4,4′-bis(chloroacetyl)diphenylether: An ESR study [J].

Ceylan, Yusuf ;

Usta, Ayhan ;

Usta, Keziban ;

Durmaz, Fatih ;

Coskun, Ahmet .

JOURNAL OF MOLECULAR STRUCTURE, 2013, 1050 :69-72

[7] METABOLIC ASPECTS OF ANTIOXIDANTS AND PRESERVATIVES [J].

DANIEL, JW .

XENOBIOTICA, 1986, 16 (10-11) :1073-1078

[8] ESTIMATION OF THE ABSORBED DOSE IN RADIATION-PROCESSED FOOD .1. TEST OF THE EPR RESPONSE FUNCTION BY A LINEAR-REGRESSION ANALYSIS [J].

DESROSIERS, MF ;

WILSON, GL ;

HUNTER, CR ;

HUTTON, DR .

APPLIED RADIATION AND ISOTOPES, 1991, 42 (07) :613-616

[9] ESTIMATION OF THE ABSORBED DOSE IN RADIATION-PROCESSED FOOD .2. TEST OF THE EPR RESPONSE FUNCTION BY AN EXPONENTIAL FITTING ANALYSIS [J].

DESROSIERS, MF .

APPLIED RADIATION AND ISOTOPES, 1991, 42 (07) :617-619

[10] ELECTRON-SPIN-RESONANCE DETECTION OF IRRADIATED FOOD [J].

DODD, NJF ;

LEA, JS ;

SWALLOW, AJ .

NATURE, 1988, 334 (6181) :387-387

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