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KMID : 0380619850170040240
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Korean Journal of Food Science and Technology
1985 Volume.17 No. 4 p.240 ~ p.244
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Properties of Crude β - amylase from Korean ginseng , Panax ginseng C . A . Meyer .
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Abstract
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Curde β-amylase was prepared by frationation of the water extracts from Korean ginseng, Panax Ginseng C.A. Meyer, with 0.2-0.6 saturation of ammonium sulfate. The enzyme showed the typical properties of β-amylase, producing only maltase from starch. The enzyme preparation also showed no maltase activity. The enzyme was stable at the pH 5-9 and at the temperature below 40℃. The enzyme showed the optimum pH at 5.0 and the optimum temperature at 35℃. Its activities had proportional relations with substrate concentration below 12 ㎎%, showing Km V slues of 4.76 ㎎%. The enzyme was inhibited by Ag^+, Hg^(++), Cd^(++), Cu^(++), Al^(3+), and Fe^(3+).
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