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野生蔬菜不仅具有较高的营养价值,还有相当高的医疗价值。近代研究表明,过量的食入硝酸盐,会诱发消化系统癌变,而维生素 C 有防癌作用,因此硝酸盐和维生素 C含量为评价蔬菜品质的重要指标之一。一般栽培的叶菜类蔬菜如白菜、菠菜、苔菜等硝酸盐含量很高,平均存4000mg/kg 鲜重左右。野生蔬菜中的硝酸盐及维生素 C 含量如何呢?我们仅对几种分布广泛,食用历史较长,营养价值较高的野生蔬菜进行了研究,以期为科学地有选择性地开发野生蔬菜资源提供有价值的依据。
Wild vegetables not only have high nutritional value, but also have very high medical value. Modern studies have shown that excessive intake of nitrate, will induce digestive cancer, while vitamin C has anti-cancer effect, so the nitrate and vitamin C content for the evaluation of vegetable quality is one of the important indicators. Generally cultivated leafy vegetables such as cabbage, spinach, moss and other nitrate content is high, the average deposit 4000mg / kg fresh weight around. What are the contents of nitrate and vitamin C in wild vegetables? We have studied only several wild vegetables that have a wide distribution, a long history of eating and high nutritional value, with a view to providing resources for the scientific and selective development of wild vegetables Valuable basis.