Product Specification 30% L- Theanine (HPLC) Latin Name Camellia sinensis O. Ktze. Product Type: Light Yellow Powdered Extract Part of the Plant Used Leaf  Extract Method: Water/Grain alcohol Add.: F25,Jiahege BLDG, #217 Wanjiali Road,Changsha China, 410016 Website: http://www.nutra-max.comTelephone: 86-731-2939657 Mobile: +86-15974104490 Fax number: 86-731-2938822 r: E-mail: gouruiping@nutra-max.com MSN:gouruiping@nutra-max.com E-mail:What is Green Tea Extract L-theanine?  L-theanine is a non-protein amino acid mainly found naturally in the green tea plant (Camellia sinensis). L-theanine is the predominant amino acid in green tea and makes up 50% of the total free amino acids in the plant. The amino acid constitutes between 1% and 2% of the dry weight of green tea leaves. L-theanine is considered the main component responsible for the taste of green tea, which in Japanese is called umami. L-theanine is marketed in Japan USA, and European as a nutritional supplement for mood modulation.  gouruipingxx@126.com. Linkman:oven