Abstract Thanks to its rich content, propolis has been used to protect the hive from all kinds of external influences and for disinfection by bees. Furthermore, it is an important marker for monitoring environmental pollution because the main sources of propolis are plant and secretions. So, the present study aimed to research radiation attenuation capability and the natural radioactivity level of propolis samples. For this reason, both natural radioactivity concentrations (226Ra, 232Th and 40K) and attenuation coefficients (Linear and Mass) in the propolis samples collected from 10 different points in Turkey were measured using high purity germanium detector (HPGe). The average natural radioactivity concentrations in samples were found to be 0.56 ± 0.19, 2.65 ± 0.31 and 70.08 ± 2.42 Bq/kg for 226Ra, 232Th and 40K, respectively. These values were much lower than the average world values (35 Bq/kg for 226Ra, 30 Bq/kg for 232Th and 400 Bq/kg for 40K) reported by United Nations Scientific Committee on Effects of Atomic Radiation (UNSCEAR) in foodstuff. The average linear attenuation coefficient, mass attenuation coefficients and half value layer values for gamma rays with 59.54 keV energy were determined as 0.1970 cm−1, 0.1831 cm2 g−1 and 3.56 cm, respectively. In addition, antioxidant properties of the samples were measured using total phenolic content and ferric reducing antioxidant power. Their correlations with radioactivity were investigated.

中文翻译：

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蜂胶样品中天然放射性水平和伽马辐射衰减系数的测定及其抗氧化性能研究

摘要 由于蜂胶含量丰富，已被用于保护蜂巢免受各种外部影响和蜜蜂的消毒。此外，它是监测环境污染的重要标志，因为蜂胶的主要来源是植物和分泌物。因此，本研究旨在研究蜂胶样品的辐射衰减能力和天然放射性水平。因此，使用高纯度锗检测器 (HPGe) 测量了从土耳其 10 个不同地点收集的蜂胶样品中的天然放射性浓度（226Ra、232Th 和 40K）和衰减系数（线性和质量）。发现样品中 226Ra、232Th 和 40K 的平均天然放射性浓度分别为 0.56 ± 0.19、2.65 ± 0.31 和 70.08 ± 2.42 Bq/kg。这些数值远低于联合国原子辐射影响科学委员会 (UNSCEAR) 报告的世界平均数值（226Ra 为 35 Bq/kg，232Th 为 30 Bq/kg，40K 为 400 Bq/kg）。具有 59.54 keV 能量的伽马射线的平均线性衰减系数、质量衰减系数和半值层值分别确定为 0.1970 cm-1、0.1831 cm2 g-1 和 3.56 cm。此外，使用总酚含量和铁还原抗氧化能力测量样品的抗氧化性能。研究了它们与放射性的相关性。具有 59.54 keV 能量的伽马射线的平均线性衰减系数、质量衰减系数和半值层值分别确定为 0.1970 cm-1、0.1831 cm2 g-1 和 3.56 cm。此外，使用总酚含量和铁还原抗氧化能力测量样品的抗氧化性能。研究了它们与放射性的相关性。具有 59.54 keV 能量的伽马射线的平均线性衰减系数、质量衰减系数和半值层值分别确定为 0.1970 cm-1、0.1831 cm2 g-1 和 3.56 cm。此外，使用总酚含量和铁还原抗氧化能力测量样品的抗氧化性能。研究了它们与放射性的相关性。