“…Recently several scientific investigations have been carried out to study the inhibitory action of various plant extracts containing poly phenolic compounds, tannins, alkaloids as well as carbohydrates. The reported extracts include, Rhus verniciflua [14], Aster koraiensis [15], Tragia plukenetii [16], Ligularia fischeri [17], Hibiscus sabdariffa [18], Eleusine aegyptiaca, Croton rottleri [19], Phoenix dactylifera [20], Piper guincense [21,22], Artememesia pallens [23], Schinopsis lorentzii [24], Lawsonia inermis [25], Oxandra asbeckii [26], Azadirachta indica [27], Justicia gendarussa [28] and Phyllanthus amarus [29].…”