Detection of gamma irradiated spices with OSL method and its reliability

Year 2016, Volume: 2 Issue: 1, 11 - 9, 01.04.2016

Gizem Aygun , Faruk Bozoglu , Enver Bulur

https://doi.org/10.20863/nsd.44208

Cited By: 3

Abstract

Introduction: Irradiation has been accepted as an effective food safety method for various foods over 50 years. Gamma rays from radioactive isotopes of Cobalt 60 or Cesium 137 are used for food irradiation applications. Main concern about food irradiation is the detection of these irradiated foods and also loss of detection of irradiation through storage period. Photo Stimulated Luminescence (PSL) is one of the physical techniques that can be used for irradiation detection. The aim of this study is to analyze the behavior of PSL signals of irradiated spices with respect to storage period, storage temperature, origin and type of samples.  

Material and Methods: Red pepper, thyme and cumin were used as samples and 4°C and 25°C were selected as storage temperature. Storage period was set as six months after irradiation application. During six months storage period, PSL signal was not detectable for most of the origin and sample type. At the end of sixth month, an spin resonance spectroscopy (ESR) analysis was performed to detect the accuracy of the PSL technique. 

Results: With respect to the results of these experiments, it was seen that, most of the samples was observed as false unirradiated by PSL technique, however ESR analyze the samples as irradiated at the end of sixth month. 

Conclusion:  According to the statistical analysis, origin and type of sample were determined as the dependent parameters of PSL detection. 

Keywords

Spices; Gamma Irradiation; Photo Stimulated Luminescence (PSL)

Detection of gamma irradiated spices with OSL method and its reliability

Abstract

References

• Smith JS, Pillai S. Irradiation and food safety. Food technology. 2004;58(11):48-55.
• Wu VCH. A review of microbial injury and recovery methods in food. Food microbiology. 2008;25(6):735-44.
• Levanduski L, Jaczynski J. Increased resistance of Escherichia coli O157: H7 to electron beam following repetitive irradiation at sub-lethal doses. International journal of food microbiology. 2008;121(3):328-34.
• Rosenthal I. Analytical methods for post-irradiation dosimetry of foods (Technical Report). Pure and applied chemistry. 1993;65(1):165-72.
• Sommers CH, Fan X. Food irradiation research and technology: John Wiley & Sons; 2008.
• SádEcká J. Irradiation of spices-a review. Czech J Food Sci. 2007;25:231-42.
• Chauhan SK, Kumar R, Nadanasabapathy S, Bawa AS. Detection methods for irradiated foods. Comprehensive Reviews in Food Science and Food Safety. 2009;8(1):4-16.
• Alberti A, Corda U, Fuochi P, Bortolin E, Calicchia A, Onori S. Light-induced fading of the PSL signal from irradiated herbs and spices. Radiation Physics and Chemistry. 2007;76(8):1455-8.
• Boniglia C, Aureli P, Bortolin E, Onori S. Verification of imported food upon import for radiation processing: Dried herbs, including herbs used in food supplements, and spices by PSL and TL. Radiation Physics and Chemistry. 2009;78(7):679-81.
• Sanderson DCW. Photostimulated luminescence (PSL): A new approach to identifying irradiated foods. 1991.
• Alvarez S, Calderón T, Millán A, Beneitez P, Piters T, Barboza M, et al. Photoluminescence decay of irradiated herbs. Radiation protection dosimetry. 1999;85(1-4):477-80.
• Bøtter-Jensen L, McKeever SWS, Wintle AG. Optically stimulated luminescence dosimetry: Elsevier; 2003.
• Sharif MM, Farkas J. Analytical studies into radiation-induced starch damage in black and white peppers. Radiation Physics and Chemistry. 1993;42(1):383-6.
• Bortolin E, Boniglia C, Calicchia A, Alberti A, Fuochi P, Onori S. Irradiated herbs and spices detection: light‐induced fading of the photo‐stimulated luminescence response. International journal of food science & technology. 2007;42(3):330-5.