Effects and Consumption Caffeine

BCH   September 15, 2009

Chemical Structure of CaffeineWhat is Caffeine? It is an alkaloid found naturally in such foods as coffee beans, tea, kola nuts, Yerba maté, guarana, and (in small amounts) cacao beans. Caffeine is created in plants as a form of pesticide, to kill of insects feeding on them. In its true form caffeine is a whitish-yellow powder substance, bitter in taste.

Caffeine’s main drug producing effects are: a stimulant that affect the central nervous system, effect the supply of oxygen to cells, the heart rate, and is a mild diuretic. Some studies show that small amounts of caffeine may increase our cognitive functioning and improve our mood.

One common source of caffeine is the coffee plant, the beans from which are used to produce coffee. Caffeine content varies substantially between Arabica and Robusta species  and to a lesser degree between varieties of each species. A single serving (6 to 8 fl oz) cup of  drip coffee contains around 100 to 125 mg of caffeine. However the world over coffee varies considerably in caffeine content per serving, and range from 75 mg to 250 mg.

Tea is another common source of caffeine in many cultures. In general tea contains half the amount of caffeine per serving than coffee, though certain types of tea, such as Lapsang sou chong smoked teas, and oolong contain less caffeine.

Just how much is a safe amount of caffeine, it is generally agreed that consuming up to 300 mg of caffeine per day is safe. That is the equivalence of drinking three cups of coffee or six cups of tea a day.



Getting to Know Oolong

BrewItUp   August 20, 2009

oolong tea

If you’re looking to branch out in your tea repertoire, try oolong tea. It is a traditional Chinese tea that’s somewhere between green and black in oxidation. It has a taste more akin to green tea, but lacks its grassy notes. It’s commonly brewed strong and has a bitterness that leaves a sweet aftertaste. In fact, oolong tea is unique in that high quality oolong can be brewed multiple times from the same leaves, and the flavor improves with reuse. Typically the third or fourth steeping is the best.

Oolong tea is often scented with jasmine flowers. A popular jasmine-scented tea is known as Dragon Pearls, which come rolled into tiny balls of leaves. When you add water to them, the pearls (or leaves) unroll. This is a fun way to make oolong tea, since it provides not only a delicious drink, but entertainment as well!



The study, which began in 1994, followed 40,530 adults, ranging in age from 40 to 79, in northeastern Japan for up to 11 years. Within this region, 80% of the population drinks green tea with more than half consuming at least 3 cups a day.

Compared with participants who consumed less than 1 cup of green tea per day, those drinking 5 or more cups a day had a significantly lower risk of death from all causes and, specifically, risk of death from CVD, with women receiving even stronger protection than men:

Health Benefits of Green Tea
In Women In Men
23% lower risk of dying from any cause 12% lower risk of dying from any cause
31% lower risk of dying from CVD 22% lower risk of dying from CVD
62% lower risk of dying from stroke 42% lower risk of dying from stroke

Only weak or neutral relationships were seen between black tea or oolong tea and all-cause or CVD mortality.

While this study found no cancer-preventive benefit from drinking green tea, other large studies, including a meta-analysis of 13 studies published July 2006 in Carcinogenesis (Sun CL et al), suggest that green tea reduces risk of breast cancer. In this study, compared to women who did not drink green tea, those consuming the most green tea were 22% less likely to develop breast cancer.

Often in studies, the effects of a certain health-promoting behavior are likely to be confounded by the fact that those who try to follow a healthy lifestyle practice a variety of healthy habits. In this study, however, since green tea is the most commonly consumed beverage in Japan, it is unlikely that study participants were choosing to drink green tea primarily for their health, and thus also unlikely that the significant drop in risk of death due to all causes and CVD was due to other habits related to health consciousness.

For more health related articles like these visit  http://www.whfoods.com



Types of Tea and Blends

BCH   July 23, 2009

Types of Tea

There are six types of tea– Black, Green,White, Oolong and Scented and Compressed.

Black tea includes Assam, Darjeeling and Nilgiri form India: Ceylon and from Sri Lanaka; and keemun and Lapsang Souchong form China. Each has its own distinctive flavor and aroma. The leaves undergo four processing stages: withering (which happens when the leaves are laid out to dry), rolling, fermenting (a process that makes the leaves turn their familiar brownish color and imparts a healthy flavor), and drying. Darjeeling – considered to be the Premier of teas – is grown at varying altitudes in the Himalayas; the higher up it is grown, the lighter the tea. Especially prized by connoisseurs is the new season’s tea, the light and fragrant first flush Darjeeling, picked in April.

Green tea, which is paler and milder than black tea, was the first to be enjoyed throughout the world, but its popularity waned as peopled showed a preference for a stronger brew. There are only two processing stages involved in producing green tea: rolling and drying. Varieties include gunpowder form China and Matcha and Sencha from Japan.

White tea is produced in very small quantities in China and Sri Lanka and is available from specialist tea suppliers. A tea for the connoisseur.

Oolong tea is semi-fermented and is generally the most expensive type of tea. The best varieties are produced in Taiwan and include the exclusive Monkey picked.

Scented teas are made from green, oolong, or black tea flavored with fruits, herbs spices and flowers, such as roses, orchids, and jasmine.

Compressed teas are formed into ball, brick, hest, and cake shapes. These are produced in China.


Blended Teas

Blended teas have an important place in modern tea-drinking, particularly the English Breakfast tea blend. Originally a mix of black Indian and Chinese teas, today Assam, Ceylon, and African teas are blended to provide drinkers with the three elements they require – strength, flavour and colour. More exotic sounding is the blend of Chinese tea called Russian Caravan tea, which is named after the camel caravan that bought Chinese tea to Europe along the silk and spice trade route.

Earl Grey, so called after Charles, the second Earl Grey who was the Prime Minister of Britain between 1830 and 1834, is a popular blend. Made with Indian and Chinese teas, flavoured with bergamot oil, it is a refreshing tea, best served black or with lemon.