Studies on radiation stability of natural caffeine

Sayantani Mitra; Nabanita Naskar; Kalpita Ghosh; Aparna Dutta; Susanta Lahiri; Punarbasu Chaudhuri; Abhijit Saha

doi:10.1016/j.apradiso.2022.110148

Studies on radiation stability of natural caffeine

Appl Radiat Isot. 2022 May:183:110148. doi: 10.1016/j.apradiso.2022.110148. Epub 2022 Feb 15.

Authors

Sayantani Mitra¹, Nabanita Naskar², Kalpita Ghosh³, Aparna Dutta⁴, Susanta Lahiri⁵, Punarbasu Chaudhuri¹, Abhijit Saha⁴

Affiliations

¹ Department of Environmental Science, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
² Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700064, India.
³ Department of Chemistry, Charuchandra College, 22, Lake Place Road, Lake Market, Kolkata, 700029, India.
⁴ UGC-DAE Consortium for Scientific Research, Kolkata Centre, III/LB-8 Bidhannagar, Kolkata, 700098, India.
⁵ Saha Institute of Nuclear Physics, 1/AF, Bidhannagar, Kolkata, 700064, India; Homi Bhabha National Institute, Mumbai, India. Electronic address: susanta.lahiri.sinp@gmail.com.

PMID: 35193082
DOI: 10.1016/j.apradiso.2022.110148

Abstract

Behavior of isolated caffeine in ⁶⁰Co- γ radiation environment was studied in solid form as well as in aqueous medium. No degradation in solid caffeine structure was observed after exposing up to a dose of 10 kGy. In aqueous medium, 98% radiolytic degradation of caffeine was observed after application of 1.26 kGy γ dose. Radiation chemical yield decreased with increasing dose. The degradation was mostly favored in neutral medium. Addition of ethanol decreased the radiolytic degradation efficiency.

Keywords: Caffeine; Radiation chemical yield; Radiolytic degradation; γ radiation.