Publications by authors named "Yuzuki Nomura"
Article Synopsis
- The study investigated how l-theanine and l-arginine, two amino acids found in green tea, affect psychological stress in humans.
- A randomized, placebo-controlled trial with 120 young adults tested the effects of these amino acids on stress responses measured through a performance test and salivary alpha-amylase activity.
- Results showed both theanine and the combination of theanine/arginine reduced stress indicators compared to placebo, but there was no significant difference between the two supplement groups, indicating no clear enhancement of stress relief from combining them.
The young leaves of green tea become lighter in color than usual when protected from sunlight by a shading net for about two weeks while growing. These leaves are called "shaded white leaf tea" or SWLT. In the eluate of SWLT, the amount of amino acids (361 mg/L) was significantly higher than that in regular tea (53.
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