Pharmacognostic study of Argyreia pilosa stem

Background and objectives: Argyreia pilosa (Convolvulaceae) has been utilized for many aliments in the conventional system ethnomedicinally; most significantly against sexually transmitted diseases, skin troubles, diabetes, rheumatism, cough, and quinsy. The key challenge experienced in the standardization of herbal drugs is the correct identification of the plant source. Thus, setting up quality control parameters by means of pharmacognostic and phytochemical analysis which assures the purity, safety, and efficiency of A. pilosa is necessary. The current research was conducted to assess the pharmacognostic characteristics including macroscopic, microscopic, phytochemical and physicochemical parameters of the stems of A. pilosa. Methods: Micro as well as macroscopic characteristics were investigated. Physicochemical parameters had been done by implementing WHO suggested parameters; preliminary phytochemical and fluorescent evaluation of stem was executed for appropriate identification and standardization.  Results: The color, shape, size, odor and surface characteristics were reported from the stem and powdered stem material of A. pilosa. Light microscope images of cross section and powdered stem revealed the presence of phloem fibers, multicellular uniseriate trichomes, sclerides, lignified xylem fibers, xylem vessels, parenchyma cells and medullary rays. Phytochemical testing confirmed the presence of flavonoids, alkaloids, tannins, phenols, steroids, fixed oils, fats, acid compounds, glycosides, amino acids, and proteins. Physicochemical parameters such as moisture content, ash value, extractive value and fluorescent behavior of stem powder have also been established. Conclusion: The current research would be useful in order to supplement the information regarding to standardization, identity and in performing additional explorations in Ayurvedic system of medicine

PHARMACOGNOSTIC STUDY OF MANSOA ALLIACEA LEAF

Mansoa alliacea Lam. (Family: Bignoniaceae) is a native plant from Amazonian basin in South America. Plant derivatives are used as anti-inflammatory, antioxidant, antiseptic and antibacterial agents. The study was aimed to determine the pharmacognostic and phytochemicals present in Mansoa alliacea. Micro and organoleptic characteristics of fresh and dried leaf samples had been examined. Physicochemical variables had been done by using WHO suggested variables; preliminary phytochemical of leaf sample had been performed to identify the presence of alkaloids, flavonoids, tannins and phenols, and quinones using the ethanolic extract of the leaves of M. alliacea