Food Sources Of Theanine

Food Sources Of Theanine
Food Sources Of Theanine

Theanine is one of the rarest amino acids currently being researched. It is found within a very small range of plants and are not regularly found that protein from dairy products animal or legumes. Research has shown that theanine acts as an antioxidant protecting cells against free radicals helping to induce relaxation and prevent anxiety. Theanine does this by helping to increase our serotonin and dopamine levels which in turn helps to improve mood concentration sleep and feeling of wellbeing.
Green Tea (Camelia sinensis)
In addition to a powerful antioxidant and anti-cancer agent green tea is also the food source with the highest density of theanine. Between one to two percent of the dry weight of the leaves with Camelia sinensis consists of this rare amino acid. The theanine is created in the roots of the plant and transferred to the leaves where it concentrates. How much theanine actually brought into each cup varies greatly depending on the quality and age of the leaves and the time spent brewing. A cup of green tea can provide up to 20 mg theanine.
Black Tea (Camelia sinensis)
Black tea is made from the same plant as green tea Camelia sinensis but the leaves are allowed to oxidize a much more resulting in fewer antioxidants but larger amounts of tannins caffeine and theanine. A cup of black tea can contain up to 22 mg theanine but again this depends on the quality of tea and time brewing.
Bay Boletus (Boletus badius or Boletus badius)
Bay Boletus is an edible mushroom forest native to North America and Europe and is found to contain significant amounts of theanine. Bay Boletus easy to find in the summer when it is most common and can be picked for consumption. The flesh of this mushroom is white to yellow with dark brown skin and a mild flavor.
Camelia japonica and Camelia sasanqua
These are two varieties of camellia family both at home in Japan which also contains some amount of theanine in their leaves shoots and roots. While mostly grown for its flowers and decorations there is mention of both leaves are used for tea too. The theanine content of these two plants is much less than Camelia sinensis.
Armored food and supplements
Currently in Japan theanine can be found in several foods as a legal food additive. After it was discovered that theanine could counterbalance some of caffeine’s negative side effects approved the Japanese Health and Welfare theanine as an additive in 1964 for soft drinks chewing gum snacks chocolate and tea. Theanine is not an approved additive in North America although it is available through health food stores and pharmacies as a supplement. The recommended dosage for supplements is 200 mg twice daily.