Hara Masakazu, Ito Fumio, Asai Tatsuo, Kuboi Toru
Faculty of Agriculture, Shizuoka University, Suruga-ku, Shizuoka, Japan.
Plant Foods Hum Nutr. 2009 Sep;64(3):188-92. doi: 10.1007/s11130-009-0129-9.
The radish (Raphanus sativus) is a root vegetable of the Brassicaceae family which shows amylolytic activity in the taproot. However, there is little information about differences in these amylolytic activities among radish cultivars. We analyzed the amylase activities and starch contents of 7 kinds of radish cultivars. The Koshin cultivar showed the highest amylase activity, with a level approximately 6 times higher than that of the Sobutori cultivar, which had the lowest. Cultivars with higher amylase activities showed higher starch contents. These results suggest that there are intraspecies variations in amylolytic activities in radishes, and positive correlations between amylase activity and starch content.
萝卜（Raphanus sativus）是十字花科的一种根菜类蔬菜，其主根具有淀粉分解活性。然而，关于不同萝卜品种间这些淀粉分解活性的差异，相关信息较少。我们分析了7种萝卜品种的淀粉酶活性和淀粉含量。越光品种的淀粉酶活性最高，其水平约为淀粉酶活性最低的早生丸太品种的6倍。淀粉酶活性较高的品种淀粉含量也较高。这些结果表明，萝卜的淀粉分解活性存在种内差异，且淀粉酶活性与淀粉含量之间呈正相关。
