1. All these teas also have caffeine and theanine , which affect the brain and seem to heighten mental alertness.

2. Other brands have inactive forms of theanine that block the effectiveness.

3. Content in tea stems in Education Theanine and more can be transported through the water in the tea cells.

4. Theanine is a new kind of natural food additives and a peculiar amino acid in tea.

5. Objective: To study the effect of theanine on delaying exercise-induced fatigue, and reveal its possible mechanism.

6. Objective: To evaluate the effects of theanine on sedative effects induced by pentobarbital sodium.

6. try its best to collect and create good sentences.

7. For instance, tea contains theanine, which researchers argue has a relaxing effect and has been shown to reduce blood pressure.

8. We have had a deep study on the theanine in tea, and developed a direct analysis method of theanine with high performance liquid chromatography.

9. Tea also contains a calming amino acid called theanine which helps reduce "the jitters" and keeps the mind relaxed and focused.

10. Studies show that green tea contains antioxidants, polyphenols, theanine, as well as a wide variety of vitamins and minerals.

11. High performance liquid chromatography(HPLC) was used for determination and identification of theanine in tea and green tea extracts without derivatization.

12. Ligand exchange chromatography with chiral mobile phases was established for the separation of theanine enantiomers.

13. Water - maze and step-down method were used to test whether theanine would affect Mices learning and memorialcapabilities.

14. In this paper, research advances in physiological functions, preparation methods and application of theanine in the world were summarized.

15. Researchers at Harvard University found that drinking five cups of black tea a day quadrupled the body's immune defense system after two weeks, probably because of theanine.

16. At last, though renewing medium and prolonging the time of culturing, the content of theanine in tea cell was increased to a higher level.