B4-KH-25B ing state of the gear unit e g not at low ambien Bevel-helical gearbox B4

Flender/Flender Gear Units/Bevel-helical gearbox B4

ute. Young leaves and branches are processed in way similar to that used for black tea. Convenience products such as tea concentrate and bottled tea have been produced from this native of South Africa since the early 2th century (. 3.3 Decaffeinated Teas Caffeine The effect of caffeine is most commonly linked to stimulating action on the central nervous system. Caffeine is useful for several purposes, including increase in muscular work, al-lergy relief, obesity control, diuresis, and treatment of the common cold. However, exces-sive consumption can lead to caffeism, which causes anxiety and neurosis. Doses of 1mg/kg body weight are serious poisoning hazard in children; the acute human fatal dose is 1 mg/kg body weight. Increase in caffeine intake may also lead to increased heartbeat, promote secretion of stomach acids, step up production of urine, and cause skin disorders(. Hence, decaffeination of tea is desirable to regulate caffeine intake. Decaffeinatedtea is produced by removing 6% to 9% of the caffeine from black tea by solvent extrac-tion as prescribed by local legislation. The decaffeinated product generally contains 0.2%to 0.8% caffeine. The raw material contains bound caffeine, about 1% to 1.5% which cannot be removed by simple extraction, unless some chemical/enzyme treatment is given. Hence decaffeination means the percentage of caffeine removal from black tea, dependingon soluble caffeine content of the raw material. In decaffeinated teas, total solubles vary3.8%3.5%, tannins 7.2%7.8%, TR 3.1%5.9%, and TF 0.1%0.2% (. Decaffeinated tea is always found to be inferior to normal tea in appearance and avor quality because of the various processing steps involved in its manufacture. Ethylacetate and supercritical liquid carbon dioxide are the only two solvents permitted for decaffeinating black tea. Tea requires high moisture content for decaffeination. minimal water content of 1% is required and as much as 5% moisture is helpful for solvent ex- tra