Drying Rate and Physicochemical Characteristics of Dried Ginseng Root at Different Temperature
Ha, D.C.(Nutratec Co., Yesan, Republic of Korea) | Ryu, G.H.(Kongju National University, Kongju, Republic of Korea)E-mail:ghryu@kongju.ac.kr | Lee, J.W.;Do, J.H.;Park, C.K.(KT&G Research Institute, Daejeon, Republic of Korea)
Drying of raw ginseng root down to 35% moisture content required for extrusion process. There were two kinds of pre-treatments of raw ginseng root which were chopping and whole-root ginseng before frying at 80, 100 and 120℃. Drying rate and physicochemical properties of dried ginseng were evaluated to determine optimum drying temperature for extrusion process. Drying time at 80℃ to decrease to 35% moisture was 6.5 hr and ginsenoside content in dried ginseng at 80℃ was lower than that of dried ginseng at 100 and 120℃. Drying time at 100 and 120℃ to decrease to 35% moisture was 5.5 and 3.5 hr and redness of dried ginseng powder was 5.20 and 7.23 respectively. Browness and redness of dried ginseng extract from 75% ethylene were significantly increased with the increase in drying temperature.
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