ISSN 2321–3647
Sun, 19 Nov 2017

Insulin Plant (Costus pictus) Leaves: Pharmacognostical Standardization and Phytochemical Evaluation

Ajithadas Aruna1*, Ramraj Nandhini1, Venkatachalam Karthikeyan1, Pandi Bose1, Shanmuganathan Jegadeesh1, Kannappan Vijayalakshmi1

1.Professor, College of Pharmacy, Madurai Medical College, Madurai-20, Tamil Nadu, India.


To explore the micro morphology and physicochemical parameters of the leaves of Costus pictus D. Don (Costaceae). Macroscopy, microscopy, physicochemical analysis, preliminary phytochemical screening and other WHO recommended parameters for standardizations were performed. Costus pictus D. Don is a perennial herb and hardy vigorous growing ginger. The leaves are simple, spirally arranged, oblong-lanceolate with the length 10 to 25cm and width 2.5 to 6cm. The midrib consists of thin epidermal layer of small squarish cells on the adaxial side and fairly thick cylindrical epidermal cells on the abaxial side. The vascular system of the midrib includes an abaxial band of three vascular bundles and adaxial single median bundle. The adaxial epidermal layers of the lamina consist of thick, cylindrical cells. The abaxial epidermis is thin which consists of narrow tubular cells. The adaxial epidermis is apostomatic and abaxial side is stomatiferous. Calcium oxalate crystals of minute particle are aggregated into large masses in the mesophyll cells. Hexacytic type stomata are present. Vein islet numbers, vein termination numbers, stomatal number, stomatal index and other physico chemical tests like ash values, loss on drying and extractive values were determined. Preliminary phytochemical screening showed the presence of carbohydrates, triterpenoids, proteins, alkaloids, tannins, saponins, flavonoids, sterols and volatile oil. Powder microscopy of the leaf showed fragments of unicellular trichomes, hexacytic stomata, abaxial solitary bundle and calcium oxalate crystals. Microscopic analysis was informative and provides useful information in the botanical identification, standardization for purity & quality and immense value in authentication of the leaf.

Keywords:  Costus pictus, Insulin plant, Costaceae, Microscopical evaluation, Physico chemical analysis.

[PDF]  Viewed: 1654  Downloaded: 216
  • Call for paper
    Call for paper

    American Journal of Pharmacy and Health Research (AJPHR) is a peer-reviewed, monthly official international journal allowing access to abstracts and full-text.

  • Email & SMS Alerts
    Email & SMS Alerts

    Email/SMS alert system is one of the key features and gives update information about the submitted manuscript.


  • Article Statastics
    Article Statastics

    American Journal of Pharmacy and Health Research (AJPHR) provides unique facility for authors to know popularity of articles on basis of numbers of PDF download and views. It will display in tabulated format.

  • Online Submission
    Online Submission

    American Journal of Pharmacy and Health Research (AJPHR) is one of the International open access journal devoted to various disciplines in science and technology.


web counter
web counter