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Catechin - Wikipedia, the free encyclopedia The concentration of catechins is higher in green and white tea. Researchers believe that catechin is effective because it easily sticks to proteins, blocking bacteria from adhering to cell walls and disrupting their ability to destroy them. Catechin reacts with toxins created by harmful bacteria (many of which belong to the protein family) and harmful metals such as lead, mercury, chrome, and cadmium. en.wikipedia.org /wiki/Catechin   (488 words)

Green Tea Catechins Green tea catechins have been found to have a number of antioxidant activities, including scavenging of such reactive oxygen species as superoxide, hydroxyl and peroxyl radicals, inhibition of lipid peroxidation, inhibition of 2'-deoxyguanosine oxidation in DNA to 8-hydroxy-2' -deoxyguanosine and inhibition of the oxidation of low-density lipoproteins. Green tea catechins have also been found to upregulate the synthesis of some hepatic phase II enzymes that are involved in the detoxication (detoxification) of some xenobiotics, including chemical carcinogens. A recent human study indicates that the green tea catechins are mainly found in blood in the protein-rich fraction of plasma and in high-density lipoproteins. www.pdrhealth.com /drug_info/nmdrugprofiles/nutsupdrugs/gre_0319.shtml   (2634 words)

The Tea Farm | Catechin Catechins are flavonoid phytochemical compounds that appear predominantly in green tea. Due to their potent antioxidant capabilities, catechins, often referred to as "tea flavonoids," are being investigated for their ability to prevent cancer and heart disease. Catechins exert significant antioxidant power and may prove to be important heart healthy agents in combating lipid peroxidation within cell membranes lining arterial walls and reducing formation of atherosclerotic plaque. www.theteafarm.com /tea_catechin.asp   (446 words)

Greenwood Health Systems ... Green Tea   (Site not responding. Last check: 2007-10-21) Green tea catechins are definitely included in a broad brush approach to the health benefits of flavonoids, which include potential for the prevention and treatment of cardiovascular disease, cancer, inflammatory conditions, asthma, periodontal disease, liver disease, cataracts, and macular degeneration. Catechins have anti-tumor activity, inducing phase I and II metabolic enzymes that increase the formation and excretion of detoxified metabolites of carcinogens, slowing the rate of cell replication and thus the growth and development of neoplasms, and preventing spontaneous and chemically-induced cancer development. Catechins bind to the hemagglutinin of the influenza virus and inhibit its absorption to the target cell, thereby inhibiting its ability to infect the target cell (Nakayama). www.greenwoodhealth.net /np/green_tea.htm   (1531 words)

Extension Ag Update - Research - November/December 2002 Now that catechin has been identified and isolated, and scientists can capture the chemical in the Department of Horticulture’s laboratory, Vivanco and a team of researchers at Colorado State are investigating a wealth of applications for the chemical. They have discovered that the weed produces two types of catechin that are the same chemical compound but the mirror image of each other in their structure. Catechin usually kills cells within the plants in an hour and kills the plants in about a week, but the team still is investigating the length of time that it remains active in the soil to prohibit plant growth. www.urbanext.uiuc.edu /agupdate/0211_research.html   (1165 words)

[No title]   (Site not responding. Last check: 2007-10-21) For example, substituted catechin multimers of the present invention may be administered alone, for the treatment of stenotic vascular diseases and disorders, such as atherosclerosis (also known as arteriosclerosis) and coronary heart disease (also known as coronary artery disease and ischemic heart disease). The monoterpene reacts with the catechin multimer to yield a complex wherein the monoterpene is embedded in the multimeric structure of the catechin multimer. The pendant nucleophilic units of the bioactive peptides react with the pendant hydroxyl groups of catechin to yield a complex wherein the bioactive peptide is embedded in the multimeric structure of the catechin multimer. www.wipo.int /cgi-pct/guest/getbykey5?KEY=03/92613.031113&ELEMENT_SET=DECL   (7812 words)

[No title] The active fraction of the exudate was found to be composed of racemic catechin, a 50:50 mixture of (+)-catechin and (-)-catechin. Catechins are common components of foods and are among the most widespread flavanols. Using analytical and organic chemistry techniques, we have investigated sites in the catechin molecule that may account for phytotoxicity, and our results indicate that the antioxidant properties of catechin are not a determining factor for phytotoxicity. www.colostate.edu /Dept/AES/projs/185.html   (2294 words)

Catechin Abstracts Tea catechins, fl tea extract or oolong tea extract were given during the entire experimental period, during only the initiation period or during only the promotion period. Tea catechins and their epimers were shown to have 50% radical scavenging ability in the concentration range of 1 to 3 microM. No significant differences were observed between the scavenging activities of tea catechins and their epimers, and, hence, the scavenging effects of catechins are not dependent on their sterical structure. www.integratedhealth.com /infoabstract/catab.html   (3827 words)

Green Tea imapct on Liver Disease   (Site not responding. Last check: 2007-10-21) Catechin is considered effective in inhibiting the absorption of excessive cholesterol and in balancing the level of cholesterol in the blood by maintaining HDL (high-density lipoprotein) and decreasing LDL (low-density lipoprotein)**. Catechin is considered effective in inhibiting excessive activations of the enzyme and lowering the blood pressure accordingly. Catechin has effects on germs, but it does not harm such beneficial bacteria for health as lactobacillus bifidus*, and, furthermore, it helps them increase, while it inhibits the increase of harmful bacteria, both in the same intestines. www.ultimatewatermassage.com /research-health/green-tea-misc.htm   (1533 words)

Catechin Hydrate The most promising of these is catechin, a tannin derivative that gives tea its astringency and is common to many plants such as grapes, berries, and ferns. Catechin compounds are found in the leaves of both green and fl teas, but green teas have much higher levels of catechin than do fl teas. In the laboratory, animal studies have shown that catechins have other promising qualities: acting as an antibacterial and antiviral agent, regulating cholesterol and blood pressure, and reducing blood clotting tendencies that may cause heart attacks or strokes. www.tjclarkminerals.com /phytochemicals/catechin_hydrate.htm   (223 words)

Vitamins and Mineral Supplements and Herbal Supplements for your Health Catechins are the main components of tea, accounting for approximately 30 percent of the dry weight of green tea and 9 percent of the dry weight of fl tea (fl tea is fermented green tea). Catechin intakes from other foods may have confounded the results of previous studies that attempted to link tea consumption to risk of cardiovascular disease. The authors also found that a 50-mg increase in catechin intake was linked to a 25 percent decrease in risk; 50 mg is found in 1 cup of fl tea plus a small piece of dark chocolate or in two large apples. www.herbalgram.org /naturemade/herbalgram/articleview.asp?a=2545   (1063 words)

Catechins : by Ray Sahelian, M.D. Catechins exert diverse physiological effects against proliferative diseases by several mechanisms, most of which are not completely characterized. Catechins are the major source of flavonoids in a group of Australian women. Catechins were the major subclass of flavonoids in this group of women, providing 59% of the total intake, followed by the flavonols (20%) and flavonones (18%), and with a smaller contribution from the flavones (3%). www.raysahelian.com /catechins.html   (666 words)

SAF - Periodicals: Forestry Source - Scientists Solve the Mystery of Knapweed's Secret Weapon   (Site not responding. Last check: 2007-10-21) One of the most intriguing discoveries associated with the identification of catechin is the complexity of spotted knapweed's mechanism for dispensing it, says Vivanco. Now that catechin has been found, Vivanco and his colleagues are investigating a variety of applications for the chemical. So far the researchers have found that spraying catechin on plants or adding it to soil is as effective as the widely used herbicide 2,4-D against pigweed, lambs quarters, and other common weeds. www.safnet.org /archive/902_knapweed1.cfm   (524 words)

Is red wine just as heart-healthy without the alcohol? The research by Bell et al focussed on catechin, a flavonoid which is found abundantly in red wine. Catechin concentrations rose sharply in both groups through the third hour after ingestion of the beverage, but persisted for significantly less time (an average of 22%) in those who drank the alcoholic beverage. These results could mean that the alcohol caused the catechin to be either excreted or metabolized more quickly in the presence of alcohol than in the non-alcoholic sample. www.eurekalert.org /pub_releases/1999-12/AJoC-Irwj-291299.php   (321 words)

Nutrition Research Newsletter: Catechin In The Mediterranean Diet: Vegetable, Fruit Or Wine? - Brief Article In the same way, catechin, a naturally occurring flavonoid, has been demonstrated to prevent human plasma oxidation and to inhibit oxidation of low-density lipoprotein. The aim of this recently published study was to determine which type of diet contributes most to plasma concentrations of catechin. Food intake was assessed using a food recall method to test the relationship between dietary catechin intake and catechin concentration in plasma. www.findarticles.com /p/articles/mi_m0887/is_2_20/ai_71350207   (412 words)

Green Tea, White Tea: Health Catechin Catechin - Catechin is a tannin peculiar to green tea because the fl tea fermentation process reduces catechins in fl tea. Catechin is a powerful, water soluable polyphenol and antioxidant that is easily oxidized. Green tea is manufactured from fresh, unfermented tea leaves; the oxidation of catechins is minimal, and hence they are able to serve as antioxidants. www.greentealovers.com /greenteahealthcatechin.htm   (2548 words)

Catechin - Ask Mr. Vitamins Catechin has been shown helpful in the treatment of viral hepatitis. When taken as part of Green Tea, catechin also appears to inhibit the growth of stomach cancer cells. Contraindications: Catechin should not be taken with Iron, as the combination may cause red blood cell damage. www.askmrvitamins.com /science/nutrients/catechin.asp   (264 words)

Catechins - Flavonoids Predominantly Found in Green Tea - Sarasota Florida Teas Researchers speculate that green tea's higher concentration of catechins is due to the way it is processed. In particular, the tea catechin, epigallocatechin gallate (EGCG), is currently being studied for its role as a chemoprotective agent. Scientists speculate that EGCG may be responsible for suppressing growth of tumors as well as inhibiting enzymes that are involved in spread of cancer cells. www.relaxsipenjoy.com /catechins_flavonoids_antioxidant_powers.aspx   (505 words)

ScienceDaily: Colorado State University Identifies Natural, Plant-Produced Herbicide They have discovered that the weed produces two types of catechin that are the same chemical compound but the mirror image of each other in structure. The two different types of catechin are produced and secreted by spotted knapweed at the same time and in the same amounts. They occur in chemical synthesis in laboratory settings, but the spotted knapweed's catechin is one of the first examples of racemic compounds that occur naturally in plants. www.sciencedaily.com /releases/2002/06/020627003508.htm   (2274 words)

CATECHIN Specialty definitions using "CATECHIN": catechol ♦ dark cutch ♦ kath, katha, keersel ♦ pale cutch, pegu cutch, pyrocatechol. catechol (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), catechine (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), catechien (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), pyrocatechol (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), o-dihydroxybenzeen (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), lichtkleurige katechu (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol). Catechol (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), Catechin (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), Pyrocatechin (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), Hellkatechu (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), Brenzkatechin (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol), Brenzcatechin (catechol, catechu, kath, katha, keersel, pale cutch, pyrocatechol). www.websters-online-dictionary.org /definition/english/Ca/Catechin.html   (727 words)

[No title]   (Site not responding. Last check: 2007-10-21) Shimamura(#18) has determined that green tea catechin and theaflavin (an oxidized form of catechin) present in fl tea have a stron effect on the influenza virus. This effect is increased by keeping the green tea catechin and the virus in contact as long as possible. It is also hoped that the antiviral capability of green tea catechin may have some beneficial effect on the AIDS (Acquired Immune Deficiency Syndrome) virus, which is now the world's most feared infectious disease. www.green-tea.com /articles/12/1/Green-tea-fights-virus/print/12   (360 words)

Catechin intake and associated dietary and lifestyle factors in a representative sample of Dutch men and women   (Site not responding. Last check: 2007-10-21) Catechins, dietary components that belong to the flavonoid family, potentially protect against chronic diseases such as cancer and cardiovascular diseases. Tea was the main catechin source in all age groups, whereas chocolate was second in children, and apples and pears were second in adults and elderly. Catechin intake is only moderately associated with the intake of other nutrients, but much stronger with certain health behaviours such as smoking. www.nature.com /ejcn/journal/v55/n2/abs/1601115a.html   (423 words)

Tea Council of Canada - Media   (Site not responding. Last check: 2007-10-21) The purpose of this study was to determine the usefulness of green tea catechin for the improvement of periodontal disease. Hydroxypropylcellulose strips containing green tea catechin as a slow release local delivery system were applied in pockets in patients once a week for 8 weeks. Green tea catechin showed a bactericidal effect against BPR and the combined use of mechanical treatment and the application of green tea catechin using a slow release local delivery system was effective in improving periodontal status. www.tea.ca /recent-research-Improvement.asp?section=healthpro   (264 words)

could resveratrol/catechin reverse Alzheimer's disease? In the presence of 40 microM catechin and 10 microM resveratrol or 20 microM resveratrol and 10 microM catechin, the toxicity determined by 10(-7) M beta-AP (1-41) was almost completely removed. When peptide 6-20 of cell division kinase p34cdc2 was utilized, catechin showed an opposite effect, inhibiting soluble tyrosine kinase activity and increasing particulate activity. The different activity of resveratrol and catechin on signal transduction pathways, as well as the differences in metal chelation, partition coefficient between water and lipids, hydrogen donation redox potential and enzyme inhibition may be at least in part based on synergistic protection against beta-AP (1-41) toxicity. www.cryonet.org /cgi-bin/dsp.cgi?msg=24324   (664 words)

happylife: Catechin "Catechin" is such a popular word these years in Japan that most Japanese know the word while my friend who went to Vancouver ten years ago and has been living there didn't know this word. Several years ago, some beverage company used this catechin as a keyword of the sales promotion of their bottled green tea and that made this material so popular. The power of catechin is still going strong and the bottled green tea with specially condensed catechin was one of the smash hit products of the last year. mochi.blogs.com /happylife/2005/01/catechin.html   (405 words)

ScienceDaily: Weed Takes Over By Triggering Other Plants To Self Destruct A chemical called catechin from spotted knapweed, which was documented in Colorado State research a year ago as a natural herbicide that is released by the plant's roots to kill other plants, actually makes native plants that compete with spotted knapweed turn on themselves. The team also compared levels of catechin in the soil in Colorado and Montana to levels in soil in Europe, where the spotted knapweed is native. Catechin stopped the stream of cytoplasm within the root cells and burst root hairs, dropped the plant's pH level to be more acidic, and triggered stress messengers, called reactive oxygen species, or ROSS, which turned on genetic production of oxidants and triggered death. www.sciencedaily.com /releases/2003/09/030909071258.htm   (1994 words)

Health Benefits - Tea Time World Wide Studies have shown that in order for cancer to form two things have to be present; an "initiator" which damages DNA in the cell rendering it subject to cancer and a " promotor" which activates cancer, leading to a malignancy. The tanninand catechin in green tea reduces both the "initiator" and "promotor". Green tea catechinand theaflavin (an oxidized form of catechin present in fl tea) have a strong effect on the influenza virus. www.teatimeworldwide.com /About_Tea/health_benefits.html   (362 words)

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