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아임계수 추출에서 6-gingerol의 6-shogaol 전환을 위한 생강 건조 조건 최적화

Optimization of drying conditions for the conversion of 6-gingerol to 6-shogaol under subcritical water extraction from ginger

한국식품과학회지 2019년 51권 5호 p.447 ~ 451
고민정 ( Ko Min-Jung ) - 한경대학교 식품생물공학과

남화현 ( Nam Hwa-Hyun ) - 이화여자대학교 식품공학과
정명수 ( Chung Myong-Soo ) - 이화여자대학교 식품공학과


6-gingerol can be converted to 6-shogaol, one of the predominant active compounds found in ginger, via processing such as drying and extraction. Subcritical water extraction is the environmentally friendly method of extraction of bioactive compounds using only purified water as a solvent. This study investigated subcritical water extraction (190oC, 15 min) of 6-gingerol, and 6-shogaol from dried ginger (Zingiber officinale) including drying conditions such as temperature (room temperature, 60, 80oC, and freeze drying) and time duration for drying (1-4 h). The amount of 6- gingerol was found to be reduced, and that of 6-shogaol was found to be increased depending upon the water content of dried ginger. Upon oven-drying ginger at 60oC for 2 h, the maximum yields of 6-gingerol (0.18±0.02 mg/g fresh weight), and 6-shogaol (0.47±0.02 mg/g fresh weight) were obtained upon subcritical water extraction.


subcritical water extraction; ginger; drying; 6-gingerol; 6-shogaol
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