title: Identification of red pepper powder irradiated with different types of radiation using luminescence methods: A comparative study.
abstract: The purpose of this study was to verify the reliability of photostimulated luminescence (PSL) and thermoluminescence (TL) methods for identifying irradiated foods, described in the European standards EN 13751:2002 and EN 1788:2001, respectively, which were established solely through interlaboratory studies on gamma-irradiated food. Red pepper powder samples irradiated with electron-beams (e-beams), gamma rays and high-energy X-rays were used as model foods. Samples irradiated with each radiation type at ⩾4 kGy could be correctly identified by the PSL method, whereas samples irradiated at ⩾0.5 kGy with each radiation type could be correctly recognized by the TL method when e-beams, gamma rays, or high-energy X-rays were used as normalization sources. However, different TL intensities were observed for minerals separated from red pepper powder for different irradiation sources, which was confirmed using pure quartz and K-feldspar minerals. Further interlaboratory studies are required to verify this phenomenon.
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea; Division of Agriculture and Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea. Electronic address: sbs0110@kaeri.re.kr.
authors.forename: Beom-Seok
authors.initials: BS
authors.lastname: Song
authors.affiliation: Food Safety Research Institute, Nong Shim Co., Ltd., Seoul 156-709, Republic of Korea.
authors.forename: Byeong-Keun
authors.initials: BK
authors.lastname: Kim
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Young-Min
authors.initials: YM
authors.lastname: Yoon
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Koo
authors.initials: K
authors.lastname: Jung
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Jong-Heum
authors.initials: JH
authors.lastname: Park
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Jae-Kyung
authors.initials: JK
authors.lastname: Kim
authors.affiliation: Food Safety Research Institute, Nong Shim Co., Ltd., Seoul 156-709, Republic of Korea.
authors.forename: Cheong-Tae
authors.initials: CT
authors.lastname: Kim
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Yunjong
authors.initials: Y
authors.lastname: Lee
authors.affiliation: Department of Biotechnology, Advanced Radiation Technology Institute, Jeongeup 580-185, Republic of Korea.
authors.forename: Dong-Ho
authors.initials: DH
authors.lastname: Kim
authors.affiliation: Division of Agriculture and Biotechnology, Seoul National University, Seoul 151-921, Republic of Korea.
authors.forename: Sang-Ryeol
authors.initials: SR
authors.lastname: Ryu
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry; D002212:Capsicum / Q000737:chemistry*; D005514:Food Irradiation; D008163:Luminescent Measurements / Q000379:methods*; D017680:Potassium Compounds / Q000737:chemistry; D011208:Powders; D011791:Quartz / Q000737:chemistry; D014965:X-Rays
chemical_list: D000538:Aluminum Silicates; D017680:Potassium Compounds; D011208:Powders; C016447:feldspar; D011791:Quartz
keywords: E-beam; Gamma ray; Photostimulated luminescence; Red pepper powder; Thermoluminescence; X-ray