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不同生长发育阶段几种野菜中硝酸盐、亚硝酸盐及维生素C的含量
引用本文:邱贺媛,曾宪锋.不同生长发育阶段几种野菜中硝酸盐、亚硝酸盐及维生素C的含量[J].食品科学,2005,26(8):324-326.
作者姓名:邱贺媛  曾宪锋
作者单位:韩山师范学院化学系,广东,潮州,521041
摘    要:测定了荠菜、泥胡菜和多头苦荬菜等3种野菜不同发育阶段叶中的硝酸盐、亚硝酸盐和维生素C的含量。参考蔬菜中硝酸盐含量分级评价标准,参考我国制定的无公害蔬菜亚硝酸盐含量限量标准(以NaNO2计≤4.0mg/kg),考虑到各种野菜的维生素C的含量,对这3种野菜评价如下:泥胡菜和多头苦荬菜的各个时期的叶,硝酸盐含量低于轻度污染水平444mg/kg,亚硝酸盐含量低于我国制定的无公害蔬菜亚硝酸盐含量的限量标准,所以,它们属于一级野菜,可以安全食用;果期荠菜的叶,硝酸盐含量低于807mg/kg,属于中度污染水平,亚硝酸盐含量低于我国制定的无公害蔬菜亚硝酸盐含量的限量标准,属二级蔬菜范围,不宜生食,煮熟或盐渍可安全食用:荠菜的期于各期叶的硝酸盐含量高于807mg/kg而低于1268mg/kg,亚硝酸盐含量低于我国制定的无公害蔬菜亚硝酸盐含量的限量标准,属于三级蔬菜,不可生食和盐渍,可熟食。

关 键 词:野菜  发育阶段  硝酸盐  亚硝酸盐  维生素C
文章编号:1002-6630(2005)08-0324-03
收稿时间:2005-05-28
修稿时间:2005-05-28

The Contents of Nitrate, Nitrite and Vitamin C at Different Growth Stages in Leaves of 3 Wild Vegetables
QIU He-yuan,ZENG Xian-feng.The Contents of Nitrate, Nitrite and Vitamin C at Different Growth Stages in Leaves of 3 Wild Vegetables[J].Food Science,2005,26(8):324-326.
Authors:QIU He-yuan  ZENG Xian-feng
Abstract:In order to research the scientific data of wild vegetables in guangdong , the contents of nitrate, nitrite and vitamin C in leaves of 3 wild plants were determined. The results and conclusions were as follows : Hemisteptalyrata (Bung.) Bung.. and Ixeris polycephala Cass; at every stage ,belong to the first class edible wild vegetables and they can beeaten anyway(in fresh, after salted or cooked ); at fruit stage , Capsella bursa-pastoris (L.) Medic. belongs to the second classand it can be eaten by cooked or salted.; at other stages , Capsella bursa-pastoris (L.)Medic. belongs to the third class edible wildvegetables and must be eaten after cooked.
Keywords:wild vegetables  growth phase  nitrate  nitrite  VC
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