Tea & Coffee 11/00 - Monitoring in Tea Production (#)

„If leaf temperature goes above 43ºC, the cell walls begin to break down, release enzymes and the catechins in the leaf begin to oxidize. What plantation workers often do not appreciate is the fact that when leaf is picked in a field where the ambient temperature is 40ºC and is loaded into a sack where the ambient temperature is also 40ºC, the temperature of the leaves nearest the outside of the sack will drop down to 28º, 29º, or 30º, as water is evaporated from the leaf. But the water stops evaporating in the middle of the sack where the leaf is packed more tightly and no air is circulating, and here the temperature can rise to as high as 50ºC due to the heat of respiration.“

http://www.teaandcoffee.net/1100/tea.htm - Cached

Tea & Coffee 07/04 - Magical, Mystical Darjeeling: Taking Tea in the Clouds Part I (#)

„Next, the tea is rolled on a rolling machine, where the tea is subjected to a rolling movement under pressure which twists the leaf. The main purpose of this step is to prepare the leaf for fermenting by rupturing the cell membranes so that oxygen begins to act with its polyphenols, a main element of tea, also called catechins. Care is taken not to provide too much heat from the friction of the rollers because this can damage the essential oils, which are developed during this time. Some very delicate teas are rolled by hand.“

http://www.teaandcoffee.net/0704/tea.htm - Cached

Amazon.com: Books: Caffeinated Beverages: Health Benefits, Physiological Effects, and Chemistry (Acs Symposium Series) (#)

„The book concludes with four sections on the chemistry of coffee, tea, and cocoa as well as methods of analysis of such products. Among the topics are antioxidative polyphenolic substances in cacao liquor, the role of green tea catechins in the improvement of intestinal conditions, sensory studies on the key odorants of roasted coffee, flavor development of cocoa during roasting, and capillary electrophoresis of some caffeinated soft drinks.Book News, Inc.®, Portland, OR“

http://www.amazon.com/exec/obidos/tg/detail/-/ 0841236542?v=glance - Cached

Amazon.com: Books: Green Tea Health Benefits and Applications (#)

„Ltd., and other researchers. The book deals primarily with the health benefits of tea polyphenols--in particular, tea catechins, which are the major component of fresh tea leaves and the element that gives green tea its pungency. Papers review the biosynthesis and fermentation processes in green and black teas, analyze effective methods for extracting tea polyphenols, and investigate the cancer-fighting and other beneficial properties of tea.Book News, Inc.®, Portland, OR“

http://www.amazon.com/exec/obidos/asin/0824704703/greentealover-20/.../ 002-4967967-9569669 - Cached

Amazon.com: Health & Personal Care: Natrol Green Tea, 500 mg (60 Capsules) (#)

„Of the four primary polyphenols in green tea, research reveals that epigallocatechin gallate (EGCG) is the most effective. Natrol's Green Tea offers a polyphenol content of 50 percent, with 25 percent of total catechins. The formula also contains 35 mg of caffeine.“

http://www.amazon.com/exec/obidos/tg/detail/-/ b0000danyk?v=glance - Cached

Tea & Coffee 10/01 - Product Showcase (#)

„An all natural, Power Chai, developed for the discriminating, health conscious consumer. Made with tea catechins, (a natural anti-oxidant), and honey, (known to cure many ailments) this chai has many health benefits.“

http://www.teaandcoffee.net/1001/product.htm - Cached