Effect of gamma irradiation on the color values and physiological properties of spent coffee ground extraction

감마선 조사가 커피박 추출물의 색도 및 생리활성에 미치는 영향

  • Song, Ha-Yeon (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Hye-Min (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Kim, Woo Sik (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Yang, Mi-So (Department of Microbiology, Cancer Research Institute, School of Medicine, Chungnam National University) ;
  • Byun, Eui-Hong (Department of Food Science and Technology, Kongju National University) ;
  • Jang, Beom-Su (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Choi, Dae Seong (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute) ;
  • Byun, Eui-Baek (Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute)
  • 송하연 (한국원자력연구원 생명공학연구부) ;
  • 김혜민 (한국원자력연구원 생명공학연구부) ;
  • 김우식 (한국원자력연구원 생명공학연구부) ;
  • 양미소 (충남대학교 의과대학) ;
  • 변의홍 (공주대학교 식품공학과) ;
  • 장범수 (한국원자력연구원 생명공학연구부) ;
  • 최대성 (한국원자력연구원 생명공학연구부) ;
  • 변의백 (한국원자력연구원 생명공학연구부)
  • Received : 2017.05.29
  • Accepted : 2017.07.11
  • Published : 2017.10.31


The spent coffee grounds (SCG) are considered valuable by-products because they contain various bioactive compounds. The SCG extraction (SCGE) was irradiated at doses ranging between 30 and 50 kGy. The deep dark-brown color of SCGE was changed to a bright yellow color by gamma irradiation. The content of the bioactive compounds of gamma-irradiated SCGE was analyzed by high-performance liquid chromatography. Interestingly, the content of quinic acid was increased by gamma irradiation, whereas other compounds were decreased. Although the contents of bioactive compounds were changed by gamma irradiation, the biological activities (radical scavenging activity and whitening effects) of SCGE were unaffected. Our findings suggest that gamma irradiation can effectively improve the color values of SCGE without the loss of biological activities. Consequently, gamma irradiation can be a useful tool for improving the utilization of SCGE in the cosmetic industry.


Supported by : 한국연구재단


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