Polyphenols Extracted from Black Tea (Camellia sinensis) Residue by Hot-Compressed Water and Their Inhibitory Effect on Pancreatic Lipasein vitro

2012 ◽  
Vol 77 (12) ◽  
pp. H254-H261 ◽  
Author(s):  
Naoki Yuda ◽  
Miyuki Tanaka ◽  
Manabu Suzuki ◽  
Yuzo Asano ◽  
Hiroshi Ochi ◽  
...  
Keyword(s):  
Camellia Sinensis ◽  
Black Tea ◽  
Inhibitory Effect ◽  
Hot Compressed Water

Inhibitory effect of black tea ( Camellia sinensis ) theaflavins and thearubigins against HCT 116 colon cancer cells and HT 460 lung cancer cells

2019 ◽  
Vol 43 (5) ◽  
pp. e12822 ◽  
Author(s):  
Ali Imran ◽  
Masood Sadiq Butt ◽  
Hang Xiao ◽  
Muhammad Imran ◽  
Abdur Rauf ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Colon Cancer ◽  
Cancer Cells ◽  
Camellia Sinensis ◽  
Black Tea ◽  
Inhibitory Effect ◽  
Lung Cancer Cells ◽  
Colon Cancer Cells ◽  
Hct 116

Effect of black tea brew of Camellia sinensis on sexual competence of male rats

2008 ◽  
Vol 118 (3) ◽  
pp. 373-377 ◽  
Author(s):  
W.D. Ratnasooriya ◽  
T.S.P. Fernando
Keyword(s):  
Camellia Sinensis ◽  
Black Tea ◽  
Male Rats

A mechanism of the thearubigin fraction of black tea (camellia sinensis) extract protecting against the effect of tetanus toxin.

2002 ◽  
Vol 27 (5) ◽  
pp. 441-447 ◽  
Author(s):  
Eiki SATOH ◽  
Toshiaki ISHII ◽  
Yoshio SHIMIZU ◽  
Shin-ichi SAWAMURA ◽  
Masakazu NISHIMURA
Keyword(s):  
Camellia Sinensis ◽  
Tetanus Toxin ◽  
Black Tea

Comparison of Antimutagenic Effect of Various Tea Extracts (Green, Oolong, Pouchong, and Black Tea)

1994 ◽  
Vol 57 (1) ◽  
pp. 54-58 ◽  
Author(s):  
GOW-CHIN YEN ◽  
HUI-YIN CHEN
Keyword(s):  
Salmonella Typhimurium ◽  
Green Tea ◽  
Aflatoxin B1 ◽  
Black Tea ◽  
Inhibitory Effect ◽  
Manufacturing Processes ◽  
Antimutagenic Effect ◽  
Oolong Tea ◽  
Tea Extract

The antimutagenic effects of various tea extracts prepared from nonfermented tea (green tea), semifermented tea (oolong tea and pouchong tea), and fermented tea (black tea) were investigated by Salmonella/microsome assay. No mutagenicity or toxicity in Salmonella typhimurium TA98 and TA100 was observed with any tea extract. The tea extracts markedly inhibited the mutagenicity of 2-amino-3-methylimidazo(4,5-f)quinoline, 3-amino-1,4-dimethyl-5H-pyridol(4,3-b)indole,2-amino-6-methyldipyrido(l,2-a:3′,2′-d)imidazole, benzo[a]pyrene, and aflatoxin B1 toward S. typhimurium TA98 and TA100 in the presence of S9 mixture, especially those of oolong and pouchong teas inhibited over 90% mutagenicity of these five mutagens at the dosage of 1 mg per plate. Among four tea extracts, black tea exhibited the weakest inhibitory effect on mutagenicity of these five mutagens. The mutagenicity of 4-nitroquinoline-N-oxide, a direct mutagen, was not inhibited by black and oolong tea extracts to S. typhimurium TA98 in the absence of S9 mixture but was increased by the tea extracts at the dose of 1 mg per plate to S. typhimurium TA100. As the antimutagenic effect of semifermented tea was stronger than nonfermented and fermented teas, some antimutagenic substances might be formed during manufacturing processes of tea.

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