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Gyo In,Nam-Geun Ahn,Bong-Seok Bae,Myoung-Woo Lee,Hee-Won Park,Kyoung Hwa Jang,Byung-Goo Cho,Chang Kyun Han,Chae Kyu Park,Yi-Seong Kwak 고려인삼학회 2017 Journal of Ginseng Research Vol.41 No.3
Background: The chemical constituents of Panax ginseng are changed by processing methods such as steaming or sun drying. In the present study, the chemical change of Panax ginseng induced by steaming was monitored in situ. Methods: Samples were separated from the same ginseng root by incision during the steaming process, for in situ monitoring. Sampling was sequentially performed in three stages; FG (fresh ginseng) / SG (steamed ginseng) / RG (red ginseng) and 60 samples were prepared and freeze dried. The samples were then analyzed to determine 43 constituents among three stages of P. ginseng. Results: The results showed that six malonyl-ginsenoside (Rg1, Rb1, Rb3, Rc, Rd, Rb2) and 15 amino acids were decreased in concentration during the steaming process. In contrast, ginsenoside-Rh1, 20(S)-Rg2, 20(S, R)-Rg3 and Maillard reaction product such as AF (arginine-fructose), AFG (arginine-fructoseglucose), and maltol were newly generated or their concentrations were increased. Conclusion: This study elucidates the dynamic changes in the chemical components of P. ginseng when the steaming process was induced. These results are thought to be helpful for quality control and standardization of herbal drugs using P. ginseng and they also provide a scientific basis for pharmacological research of processed ginseng (Red ginseng).
In, Gyo,Ahn, Nam-Geun,Bae, Bong-Seok,Lee, Myoung-Woo,Park, Hee-Won,Jang, Kyoung Hwa,Cho, Byung-Goo,Han, Chang Kyun,Park, Chae Kyu,Kwak, Yi-Seong The Korean Society of Ginseng 2017 Journal of Ginseng Research Vol.41 No.3
Background: The chemical constituents of Panax ginseng are changed by processing methods such as steaming or sun drying. In the present study, the chemical change of Panax ginseng induced by steaming was monitored in situ. Methods: Samples were separated from the same ginseng root by incision during the steaming process, for in situ monitoring. Sampling was sequentially performed in three stages; FG (fresh ginseng) ${\rightarrow}$ SG (steamed ginseng) ${\rightarrow}$ RG (red ginseng) and 60 samples were prepared and freeze dried. The samples were then analyzed to determine 43 constituents among three stages of P. ginseng. Results: The results showed that six malonyl-ginsenoside (Rg1, Rb1, Rb3, Rc, Rd, Rb2) and 15 amino acids were decreased in concentration during the steaming process. In contrast, ginsenoside-Rh1, 20(S)-Rg2, 20(S, R)-Rg3 and Maillard reaction product such as AF (arginine-fructose), AFG (arginine-fructose-glucose), and maltol were newly generated or their concentrations were increased. Conclusion: This study elucidates the dynamic changes in the chemical components of P. ginseng when the steaming process was induced. These results are thought to be helpful for quality control and standardization of herbal drugs using P. ginseng and they also provide a scientific basis for pharmacological research of processed ginseng (Red ginseng).
장문교 ( Jang Mun Gyo ),김지영 ( Kim Ji Yeong ),최명숙 ( Choe Myeong Sug ),오구택 ( O Gu Taeg ),복성해 ( Bog Seong Hae ),박용복 ( Park Yong Bog ) 한국지질동맥경화학회 ( 구 한국지질학회 ) 2002 韓國脂質學會誌 Vol.12 No.1
The identification of monocytic genes differentially expressed by oxidized low-density lipoproteins (oxLDL) may be important for understanding the molecular basis of various inflammatory processes including atherosclerosis. The genes induced or suppressed
김동성(Dong-seong Kim),장승교(Seung-gyo Jang) 한국추진공학회 2023 한국추진공학회지 Vol.27 No.3
Pyrotechnic Devices used in the aerospace industry are required to be highly reliable as one-shot devices, and in particular when applied to space launch vehicles, they are required to have enhanced reliability according to relevant standards. The required reliability assuming that the operating characteristics of the pyrotechnic device follow a binomial distribution can be verified by not failing even once in a test using more than about 600 samples. For this reason, when conducting tests that include extreme environments, Bayesian methodology, which is costly and time-consuming for reducing the number of samples to prove required reliability except when developing a completely new pyrotechnic device, is in the spotlight. In this study, a reliability verification method applying the Bayesian methodology to electric initiators, which are commonly used in most pyrotechnic devices, is presented and reliability is estimated based on initiator operation tests of a relatively small samples.