Decomposition of Guanosine-5’-Monophosphate by Heat Treatment

구아닌 산의 열(熱) 분해(分解)에 관(關)한 연구(硏究)

  • Lee, Jae-Heung (Cheil Sugar Co., Ltd., Food Research and Development Center) ;
  • Ko, Jung-Hwan (Cheil Sugar Co., Ltd., Food Research and Development Center) ;
  • Kim, Hong-Jip (Cheil Sugar Co., Ltd., Food Research and Development Center) ;
  • Bae, Jong-Chan (Cheil Sugar Co., Ltd., Food Research and Development Center) ;
  • Yu, Ju-Hyun (Department of Food Engineering, Yonsei University)
  • 이재흥 (제일제당 주식회사 식품연구소) ;
  • 고중환 (제일제당 주식회사 식품연구소) ;
  • 김홍집 (제일제당 주식회사 식품연구소) ;
  • 배종찬 (제일제당 주식회사 식품연구소) ;
  • 유주현 (연세대학교 식품공학과)
  • Published : 1979.09.15

Abstract

The heat decomposition rate of guanosine-5'-monophosphate was investigated in pH range from 5.52 to 7.00, and 0.1 of the ionic strength. The result showed that the rate was a first-order reaction and the rate of guanosine-5'-monophosphate loss was maximum near $pKa_2$. The loss of guanosine-5'-monophosphate was temperature dependent and followed to the Arrhenius equation in the temperature region from $93^{\circ}C$ to $108^{\circ}C$. The rate constant as function of temperature ($93^{\circ}C$ to $108^{\circ}C$) and neutral pH($pKa_2$, 6.0, to 7.0) was correlated by least-square fit of the experimental data; $$K=4.19{\times}10^{26}\;{\exp}\;[-1.3(pH+E/RT)]$$

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