{"id":5891,"date":"2024-06-04T22:19:19","date_gmt":"2024-06-04T14:19:19","guid":{"rendered":"https:\/\/www.grherbs.com\/?post_type=product&#038;p=5891"},"modified":"2024-06-04T22:50:59","modified_gmt":"2024-06-04T14:50:59","slug":"l-theanine-powder","status":"publish","type":"product","link":"https:\/\/www.grherbs.com\/?product=l-theanine-powder","title":{"rendered":"L-Theanine Powder"},"content":{"rendered":"<p><strong>I. Basic Information<\/strong><\/p>\n<ul>\n<li>Chemical Name: L-Theanine<\/li>\n<li>Chemical Formula: C\u2087HN\u2082O\u2083<\/li>\n<li>Properties: L-Theanine is a unique free amino acid found in tea, accounting for 1%-2% of the weight of dry tea leaves.<\/li>\n<\/ul>\n<p><strong>II. Physical and Chemical Properties<\/strong><\/p>\n<ul>\n<li>Structure: L-Theanine belongs to the class of amide compounds and is chemically named N-ethyl-L-glutamine.<\/li>\n<li>Physical State: Naturally occurring L-Theanine is always in the L-form, existing as white needle-like crystals with a melting point of 217\u2103\u2013218\u2103 and a specific rotation of [\u03b1]=0.7\u00b0.<\/li>\n<li>Solubility: L-Theanine is highly soluble in water but insoluble in organic solvents such as ethanol and ether. Its aqueous solution is slightly acidic and has a caramel-like aroma and a refreshing taste similar to monosodium glutamate, with a taste threshold of 0.06%.<\/li>\n<\/ul>\n<p><strong>III. Presence and Sources<\/strong><\/p>\n<ul>\n<li>L-Theanine was first isolated from green tea in 1950 and is a characteristic amino acid of tea, as well as one of the flavor-forming substances in tea.<\/li>\n<li>L-Theanine content is relatively high in tea, accounting for approximately 50%\u201360% of the total amino acids in tea.<\/li>\n<li>In addition to trace amounts detected in plants such as tea camellia, mushrooms, and oil tea, L-Theanine has not been found in other plants.<\/li>\n<\/ul>\n<p><strong>IV. Absorption and Metabolism<\/strong><\/p>\n<ul>\n<li>L-Theanine is absorbed in the small intestine, and its absorption process may share a Na+-coupled co-transporter protein with glutamic acid.<\/li>\n<li>After ingestion of L-Theanine, intact L-Theanine, glutamic acid, and ethylamine can be detected in urine, with the quantities related to the administered dose of L-Theanine.<\/li>\n<li>L-Theanine may undergo enzymatic hydrolysis to glutamic acid and ethylamine in the body, and the metabolic site may be the kidneys.<\/li>\n<\/ul>\n<p><strong>V. Functions and Effects<\/strong><\/p>\n<ol>\n<li>Blood Pressure-Lowering Effect: L-Theanine can reduce 5-hydroxytryptamine content in the brain, thereby regulating blood pressure. When different doses of L-Theanine were injected into spontaneously hypertensive rats (SHR), the degree of blood pressure reduction was positively correlated with the dose.<\/li>\n<li>Auxiliary Tumor Suppression Effect: Although L-Theanine itself has no antitumor activity, it can enhance the efficacy of various antitumor drugs.<\/li>\n<li>Relaxation and Sedative Effects: L-Theanine can promote alpha brain wave activity, enabling people to reach a relaxed state, relieving mental and physical fatigue, and improving stress resistance.<\/li>\n<li>Improvement of Sleep Quality: Studies show that daily intake of a certain amount of L-Theanine can effectively improve sleep quality.<\/li>\n<li>Anti-Anxiety and Anti-Depression Effects: L-Theanine can actively alleviate anxiety symptoms and help improve depressive symptoms.<\/li>\n<\/ol>\n<p><strong>VI. Other Applications<\/strong><\/p>\n<ul>\n<li>L-Theanine can be used as a food additive in products such as beverages, biscuits, and candies, providing unique flavor and nutritional value to foods.<\/li>\n<\/ul>\n<hr \/>\n<p>In summary, L-Theanine is a unique free amino acid found in tea, possessing various physiological functions and pharmacological applications that positively impact human health.<\/p>\n","protected":false},"excerpt":{"rendered":"<p class=\"search-card-e-title\" data-aplus-auto-card-mod=\"area=title&amp;areaContent=2row&amp;target=detail\" data-aplus-ae=\"x23_28250805\" data-spm-anchor-id=\"a2700.galleryofferlist.p_offer.i3.132d69ccNFz5eI\" data-aplus-clk=\"x21_2a7e266a\">High Purity Food Grade L Theanine L-Theanine Powder<\/p>\n","protected":false},"featured_media":5854,"comment_status":"open","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}}},"product_cat":[44],"product_tag":[],"class_list":{"0":"post-5891","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-nutritional-supplements","7":"desktop-align-center","8":"tablet-align-center","9":"mobile-align-center","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.grherbs.com\/index.php?rest_route=\/wp\/v2\/product\/5891","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.grherbs.com\/index.php?rest_route=\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.grherbs.com\/index.php?rest_route=\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/www.grherbs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5891"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.grherbs.com\/index.php?rest_route=\/wp\/v2\/media\/5854"}],"wp:attachment":[{"href":"https:\/\/www.grherbs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5891"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.grherbs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_cat&post=5891"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.grherbs.com\/index.php?rest_route=%2Fwp%2Fv2%2Fproduct_tag&post=5891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}