TALISA (Leaves)
Talisa consist of dried needle like leaves of Abies webbiana Lindl (Fam. Pinacem), plant is a tall, evergreen tree with thick, spreading, horizontal branches attaining a height of 60 m found in Himalayas at an altitude of 2800-10000 m.
SYNONYMS
Sanskrit : Patradhyam
Assamese : Talish
Bengali : Talish Pala, Taleesh Patra
English : Himalayan Siver
Gujrati : Talish Patra
Hindi : Talish Patra
Kannada : Tales Patra, Talisapathra, Shukodara
Kashmiri : —
Malayalam : Talisapatra, Taleesapatri
Marathi : Laghu Taleespatra
Oriya : Talis
Punjabi : —
Tamil : Talispatra, Taleesapatri
Telugu : Taleesapatri
Urdu : Zarnab
DESCRIPTION
a) Macroscopic
Leaves flat, 1 to 5.5 cm long, about 2 mm broad; shining, midrib in the upper surface channelled down the middle but raised beneath; with two faint white lines on either side of the midrib beneath, petiole very short, greyish-brown; odour, terebinthinelike; taste, astringent.
b) Microscopic
Mature leaf shows single layered epidermis on either side covered with thick cuticle; upper epidermis followed by single layered sclerenchymatous hypodermis, lower epidermis shows papillate projections at some places followed by 1 or 2 layers sclerenchymatous hypodermis; palisade 2 layered; spongy parenchyma 4-6 layered; vascular bundle single, situated centrally, consisting of xylem and phloem, enclosed by a single layered endodermis; xylem on upper side and phloem on lower side; cambium inconspicuous; secretory cavities two in numbers, located on either side of vascular bundle, stomata sunken type, present only on the lower surface.
Powder – Greenish-brown; shows sclerenchymatous cells, palisade, spongy parenchyma and a few epidermal cells.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 per cent, Appendix 2.2.2.
Total Ash Not more than 6 per cent, Appendix 2.2.3.
Acid-insoluble ash Not more than 0.5 per cent, Appendix 2.2.4.
Alcohol-soluble extractive Not less than 14 per cent, Appendix 2.2.6.
Water-soluble extractive Not less than 15 per cent, Appendix 2.2.7.
T.L.C.
T.L.C. of alcoholic extract on Silica Gel ‘G’ using Toluene: Ethylacetate (9:1) shows in visible light five spots at Rf. 0.09, 0.41, 0.59, 0.67 (all green) and 0.92 (light green). Under U.V. (366 nm) eight fluorescent zones visible at Rf. 0.05 (orange), 0.09 (blackish) 0.14 (orange), 0.43 (red), 0.54 (blue), 0.62 (blackish red), 0.67 and 0.92 (both red). On exposure to iodine vapour eleven spots appear at Rf. 0.04, 0.08, 0.12, 0.17, 0.39, 0.50, 0.57, 0.65, 0.73, 0.85 and 0.92 (all yellow). On spraying with Vanillin Sulphuric acid reagent and heating the plate at 105oC for ten minutes eleven spots appear at Rf. 0.04, 0.08, 0.12, 0.17, 0.39, 0.50, 0.57, 0.65, 0.73, 0.85 and 0.92 (all violet).
CONSTITUENTS – Essential Oil & Alkaloid.
PROPERTIES AND ACTION
Rasa : Madhura, Katu, Tikta
Guna : Laghu, Tiksna
Virya : Usna
Vipaka : Katu
Karma : Dipana, Hrdya, Vatakaphapham, Slesmapittajit
IMPORTANT FORMULATIONS – Draksadi Curna, Talisadi Curna, Bhaskara Lavana, Pranada Gutika, Jatiphaladi Curna, Puga Khanda, Talisadi Modaka
THERAPEUTIC USES – Kasa, Agnimandya, Hikka, Krmi, Ksaya, Mukharoga, Svasa, Gulma, Amadosa, Chardi, Aruci
DOSE – 2-3 gm of the drug in powder form.
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