ACADEMIC ZONE

1.        With seven (7) examples describe how Latitude and Altitude affecting cultivation of medicinal plants a.        Gentian produce bitter constituents when grown in higher altitude b.       Thyme and Peppermint produce less constituents when grown in higher altitude c.        Coconut needs a maritime climate d.       Sugar cane is lowland plant e.        Tragacanth, Cinchona succirubra require elevation f.         Tea requires (1000-2000 M), coffee (800 – 1800 M), and cocoa (100 – 200 M) g.        Peanut & olive grown in the subtropics produce a higher unsaturated fat content. 2.        Define the following terms; Stomatal number, Stomatal index, Vein-islet number, Veinlet termination number, Pali...

  1.       Explain the following methods of extractions                                                        15 MARKS Continues hot extraction, Supercritical fluid extraction, counter current extraction ü   Soxhlet (hot continuous) extraction In this method; the fine ground crude drug is placed in a porous bag (Thimble), which is placed in the chamber of the soxhlet extractor. The extracting solvent in the flask is heated and its vapors condense in condenser. The condensed drops of solvent fall in the porous bag (thimble), dissolving out the desired component from a solid mixture. When the siphon tube fills to overflowing, it initiates a siphoning action into the flask. This p...