AMATALA

Light absorbing substances discharged by many industrial processes greatly affect the aesthetic value and transparency of water and reduce the amount of light available for synthesis. The long term net effect of light absorbing substances is a reduction in the depth of the euphotic zone and a probable negative effect on the ecosystem such as stimulation and depression of the primary production, which have an impact on the phytoplankton population.  This in turn affects higher trophic levels such as zooplackton and fish productivity and re-oxygenation of rivers or water courses.

Black Tea is defined as a product derived solely and exclusively, and produced by accepted processes, notably fermentation and drying of the leaves, buds and tender stems of varieties of the species Camellia Sinensis (Linnaeus). The differences in Black Tea occur due to variation in green leaf composition, genetic characteristics of the clones, growing conditions and the method of production of the finished material (Sapekoe).

Coffee is a member of the large Rubiacea family, within which it constitutes the coffea genus (Coste, 1992). The genus coffea contains approximately 70 species, of which the most widely grown are the arabica and the canephora specis (Cambrony, 1992).  It is no known who first thought of the idea of brewing a drink from coffee beans. However, coffee drinking has been known in the Middle East since long before our era. The first shipment of coffee arrived in Europe at Venice (then European trading headquarters) in 1615 from Turkey, and coffee houses quickly spread through Italy and to Vienna, then on to most of Europe.  Coffee drinking is today spread throughout the World, from the Americas to Europe, from Africa to Asia.