Chemical analysis and acetylcholinesterase inhibitory effect of anthocyanin‐rich red leaf tea (cv. Sunrouge)

Abstract

These results suggested that 'Sunrouge' might protect humans from humans from AChE-related diseases by suppressing AChE activity. To obtain sufficient amounts of anthocyanins, catechins and/or caffeine for a functional food material, 'Sunrouge' from the third crop season should be used.

The Inhibitory Effects of Anthocyanin-Rich Sunrouge Tea on Pancreatic Lipase Activity

“…EGCG and ECG have previously been shown to produce strong inhibitory effects on lipase activity 1,15 19 . A previous report showed that SR also contained a small amount of EGCG-3-O-methyl 12 . Benifuuki green tea, which contains high levels of EGCG-3-O-methyl, was shown to suppress postprandial hypertriglyceridemia in rats 20 .…”

“…SR tea has higher levels of anthocyanins than other more common green tea varieties such as Yabukita YK ; these are effective for the prevention of eyestrain 8 and have antioxidant activity 9 11 . Furthermore, SR also contains similar levels of catechins such as epigallocatechin gallate EGCG as other green tea varieties 12 . On the other hand, green tea leaves including SR have the other useful components such as fat-soluble vitamins.…”

Comparison of the Effects of Three Tea Cultivars (<i>Camellia sinensis</i> L.) on Nitric Oxide Production and Aortic Soluble Guanylate Cyclase Expression in High-Salt Diet-Fed Spontaneously Hypertensive Rats

“…In accordance with our previous study (13), we determined the levels of two myricetin, five quercetin, and three kaempferol glycosides. With regard to anthocyanins, four delphinidin and four cyaniding glycosides were determined by high-performance liquid chromatography (HPLC), as described in our previous report (15). In addition to these ingredients, catechin, caffeine and amino acid levels in the tea samples were also measured by HPLC, as described in previous reports (16,17).…”

Examination of Conditions for the Efficient Extraction of Various Functional Ingredients from Tea Leaves (<i>Camellia sinensis </i>L.) using a Tea Infuser, ‘Rich plus’ (RICH+^®)

“…れている嗜好飲料である．茶葉中には， カテキン類， カフェ イン，テアニン，加水分解型タンニン，アントシアニン， 水溶性ビタミン，脂溶性ビタミンなど様々な健康機能性を 有する成分が含まれている 1) ．カテキン類は抗酸化作用 2) ， 生活習慣病予防作用 3) ∼5) ，免疫賦活作用 6) 7) ，抗アレルギー作 用 8) ∼10) ，抗がん作用 11) 12) ，抗菌作用 13) 14) など，テアニンは α 波 (脳波)の出現頻度の増加作用 15,16) ，脳の神経保護作用 17) ，ス トリクチニンなどの加水分解型タンニンは IgE 産生抑制 作用 18) ，アントシアニンはアセチルコリンエステラーゼ抑 制作用 19…”