稀土对茶叶中稀土结合糖蛋白的组成及活性的影响

应用电感偶合等离子体质谱（ＩＣＰ－ＭＳ）、气相色谱（ＧＣ）、氨基酸分析仪及动力物模型，研究了喷施稀土对茶叶中稀土结合糖蛋白（ＲＥＥ－ＴＧＰ）组成及活性的影响，成品茶中有稀土结合糖蛋白；稀土对单糖种类及组成没有明显影响，但ＲＥＥ－ＴＧＰ中羟脯氨酸（Ｈｙｐｒｏ）及丝氨酸（Ｓｅｒ）含量增加明显，而谷氨酸（Ｇｌｕ）含量则比对照区的低，稀土处理区茶叶制得的ＲＥＥ－ＴＧＰ中Ｌａ含量增加了１９３％；ＲＥＥ－ＴＧＰ具有明显的降血糖效果和增强免疫作用等活性。

Effects of Rare Earths on Composition and Activities of Rare Earth Elements Binding Glucoprotein in Tea

The effects of spraying rare earth on composition and activities of tea polysaccharide were measured by ICP MS, GC, amino acid analyzer and animal models. The results show that there are rare earth elements binding glucoprotein in tea (REE TGP). The effects of rare earth on composition and content of saccharides in REE TGP are not obvious. The contents of Hypro and Ser in REE TGP are evidently enhanced in comparison with control (not treated with rare earth), but the content of Glu is lower than that of control. The content of La in REE TGP from the tea garden sprayed rare earth increases by 193% in comparison with the control. REE TGP declines content of blood sugar in mice and enhances immunization of rat, which are very evident when the animals are treated by REE TGP from the tea garden sprayed rare earth.