3个引进生菜品种的品质和硝酸盐含量分析

选取了直立生菜、细菊生菜和红叶生菜等3个生菜品种进行维生素(Vc)、还原糖、粗蛋白、可溶性固形物和硝酸盐做定量测定和比较分析.结果表明:(1)3种生菜均属于高Vc含量蔬菜;(2)3种生菜中以直立生菜还原糖含量最高;(3)3种生菜粗蛋白含量比大白菜、胡萝卜等其他大宗蔬菜高含量高;(4)3种生菜是水分含量较高的蔬菜品种;(5)3种生菜属低硝酸盐含量蔬菜,其硝酸盐含量大小顺序为:直立生菜<红叶生菜<细菊生菜.

Quality and nitrate analysis for three inducted lettuce varieties

In this paper,Rome lettuce,chrysanthemum lettuce and red leaf lettuce were selected to test and analyzed the contents of Vitamin C,reductive sugar,crude protein,soluble solids and nitrate.The result showed that(1) three kinds of inducted lettuce were high Vitamin C content of vegetables.(2) In three inducted lettuce varieties,the content of reductive sugar was the highest in Rome lettuce.(3) The crude protein content in three kinds of inducted lettuces was higher than the common vegetables,such as Chinese c...