| 蔬菜硝酸盐分布规律及其转化机理 |
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| 引用本文： | 段咏新.蔬菜硝酸盐分布规律及其转化机理[J].徐州师范大学学报(自然科学版),1991(2). |
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| 作者姓名： | 段咏新 |
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| 作者单位： | 徐州师范学院生物系 |
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| 摘 要： | 不同种类蔬菜,硝酸盐含量以根菜类和叶菜类含量最高,茄果类、豆类和食用菌类含量最低;同种蔬菜不同年龄,年龄小的蔬菜硝酸盐含量高于年龄大的;同种蔬菜不同部位,硝酸盐含量为根>茎>叶柄>叶片。硝酸盐经硝酸还原酶作用,生成亚硝酸盐,亚硝酸盐经亚硝基化作用生成亚硝胺,这是一种强烈的致癌物。
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| 关 键 词： | 硝酸盐 分布规律 转化机理 蔬菜 |
DISTRIBUTION PATTERN AND CHANGE MECHANISM OF NITRATE IN VEGETABLE |
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| Duan Yongxin.DISTRIBUTION PATTERN AND CHANGE MECHANISM OF NITRATE IN VEGETABLE[J].Journal of Xuzhou Normal University(Natural Science Edition),1991(2). |
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| Authors: | Duan Yongxin |
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| Institution: | Duan Yongxin |
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| Abstract: | The contents of nitrate in the root-and leaf-vegetables arc maximum among various species, and the frui-, tbcan-vegetables and edible fungi arc minimum. Among various ages of the vegetables, the amount of nitrate is higher in young vegetables than in old ones. The accumulation of nitrate in the different parts of the vegetable will show as follows: root> stcm> pctiolc> blade. Nitrate can be changed into nitrite by the nitrate rcductasc. By the nitrition, nitrite can be turned into amine nitrite, which is a strongly kind of carcinogen. |
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| Keywords: | Nitrate Distribution pattern Change mechanism Vegetable |
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