Determination of natural radioactivity levels and gamma radiation attenuation coefficients in propolis samples and the study of its antioxidant properties


Dizman S., Yıldız O. , Boyracı G. M. , Kolaylı S.

Radiochimica Acta, cilt.1, ss.1-9, 2020 (SCI Expanded İndekslerine Giren Dergi)

  • Cilt numarası: 1 Konu: 11
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1515/ract-2019-3191
  • Dergi Adı: Radiochimica Acta
  • Sayfa Sayıları: ss.1-9

Özet

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 UnitedNations 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.