Pharmacognostical, Phytochemical and Antimicrobial Studies of Leaves
Research Journal of Pharmacognosy and Phytochemistry
Pimenta dioica commonly known as allspice or pimento. Here we have made an attempt to explore pharmacognostical characters and preliminary phytochemical characters of pimento leaves. Ovate shaped leaves present in Pimento tree are petiolate with entire margin and mucronate apex. The spicy green leaves have symmetric base with opposite phyllotaxy. Powder microscopy of air dried pulverized powder of Pimenta dioica showed epidermal trichomes, calcium oxalate prisms, cells containing volatile oil,
... ning volatile oil, starch grains and lignified phloem fibers. Pwder microscopy also reveals the presence of paracytic stomata in epidermal cells. Various leaf constants like stomatal number, stomatal index, palisade ratio, vein-islet number and vein termination number have been found out. Moisture content of the pimento leaf also determined. Different ash values like total ash value, acid insoluble ash value and water soluble ash values also found out. Alcohol soluble extractive value and water soluble extractive values were 19.2 % and 3.6 % respectively. The presence of alkaloids, saponins, Tannins, flavanoids, proteins and triterpenoids are indicated by phytochemical screening of aqueous alcoholic extract of Pimento leaves. These results will help the fellow scientists and others who will research in Pimenta dioica to identify the plant and species.