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박석호 ( Seok Ho Park ),박종우 ( Jong Woo Park ),최동수 ( Dong Soo Choi ),김진세 ( Jin Se Kim ),김용훈 ( Yong Hun Kim ),최승렬 ( Seung Ryul Choi ),오성식 ( Sung Sik Oh ),오유석 ( Yu Seok Oh ),이진수 ( Jin Su Lee ) 한국산업식품공학회 2016 산업 식품공학 Vol.20 No.1
This study was conducted to develop and evaluate an appropriate control device for a purge type controlled atmosphere (CA) storage in Korea. To determine ideal performance, oxygen and carbon dioxide control capability and airtightness were analyzed according to the postharvest management manual of CA storage of Fuji apples. In shortened experiments for CA storage, the condition was delayed CA at 0-0.5oC for three days and stored at 0.1-0.5% carbon dioxide levels for 3 days and then further stored 6 days under 1% carbon dioxide. As a result, the temperature control range of a developed CA container was 0.0-0.5oC, and the relative humidity was more than 90%, except for the defrosting step for the freezer during the storage period. The rate of pressure reduction for the CA container in the negative and positive pressure states was 0.45 and 0.21 mmH2O/min, respectively, and it was twofolds higher than standard airtightness for CA storage. After nitrogen injection, oxygen concentration was achieved at 2%, and carbon dioxide concentration was maintained at 0.1-0.5% for 6 days. Afterwards, carbon dioxide levels were tightly controlled between 0.1-1.0%. These results suggest that a developed purge type CA container could be effective in commercially maintaining the quality of agricultural products.
(+)-Chromen 유도체의 합성 및 이들의 Wnt/β-catenin pathway 억제 활성 평가
이지현,조수현,윤은주,오유석,송규용 충남대학교 약학대학 의약품개발연구소 2013 藥學論文集 Vol.28 No.-
(+)-Decursin and GCK062, which is decursin derivative, showed strong inhibitory activity for Wnt/β-catenin signaling and suppressed concentration-dependently PC3 cell growth. These compounds have pyranocoumarin ring as backbone and acryloyl group as side chain. In this study, we introduced (+)-chromen ring as backbond, that is more simplified than pyranocoumarin, and synthesized (+)-chromen derivatives. As a results, in most cases, (+)-chromen derivatives disappeared or lowered the inhibitory activities for Wnt/β -catenin signaling. However (+)-chromen derivative (SLC-G005, 92.0%), introduced 3,4-dihydroxycinnamoyl group, showed potent inhibitory activity, not as much as GCK062 (99.5%).