PRIYALA (Seed)
Priyala consists of seed of Buchanania lanzan Spreng. Syn. B. latifolia Roxb. (Farn, Anacardiacem); an evergreen tree upto 15 m high, found throughout the country in dry deciduous forests.
SYNONYMS
Sanskrit : Piyalaka, Bhaulavalkala
Assamese : —
Bengali : Chirangi, Chowl, Satdhan
English : —
Gujrati : Charal, Shalichokha
Hindi : Piyal, Piyar, Chiraungi
Kannada : Nurlaal
Kashmiri : —
Malayalam : Mural, Priyalam, Mural maram
Marathi : Charoli
Oriya : —
Punjabi : —
Tamil : Muolaima, Korka, Saraparuppu
Telugu : Sara, Sarapappu
Urdu : Chironji
DESCRIPTION
a) Macroscopic
Seed laterally much compressed, creamish-brown, mottled with darker brown lines, 0.4-0.6 cm long, 0.3-0.5 cm wide, occasionally separate cotyledons also occur, funicle stout, micropyle superior, linear, hilum present at the apex of round edge; slight pressure separates oily cotyledons; odour, pleasant; taste, sweetish-oily.
b) Microscopic
Seed – Longitudinal section of seed-coat shows epidermis consisting of polygonal cells with scattered, large, pitted, thick-walled, sclerenchymatous cells, occurring mostly in groups, followed by remnants of disorganised, collapsed cells of integument, which are of various size, thin-walled and parenchymatous cells filled with brownish content and form a pigment layer, below which a band of parenchymatous cells present, consisting of elongated or tubular cells; cotyledons consisting of epidermis and thin-walled parenchymatous cells, epidermal cells of cotyledons barrel-shaped and the parenchymatous cells polyhedral and filled with aleurone grains of globoid type,measuring 2.5-5.0 n in dia. and oil globules; procambium bundles, running longitudinally also occur among these parenchyma cells.
Powder – A creamish-brown paste; shows numerous mesophyll cells, filled with oil globules and aleurone grains of globoid type measuring 2.5-5.0 n in dia. and sclerenchymatous cells, in surface view seed coat polyhedral in shape, thick-walled and filled with brownish contents.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 per cent, Appendix 2.2.2.
Total Ash Not more than 4 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 10 per cent, Appendix 2.2.6.
Water-soluble extractive Not less than 7 per cent, Appendix 2.2.7.
T.L.C.
T.L.C. of alcoholic extract of the drug on Silica Gel ‘G’ plate using Benzene :
Ethylacetate (3:1) shows under U.V. (254 nm) two fluorescent zones at Rf. 0.72 and 0.94 (blue). On exposure to Iodine vapour seven spots appear at Rf. 0.08, 0.27, 0.54, 0.72, 0.91, 0.94 and 0.98 (all yellow). On spraying with Vanillin-Sulphuric acid reagent and on heating the plate for ten minutes at 105°c eight spots appear at Rf. 0.08, 0.27, 0.54, 0.72, 0.84, 0.91, 0.94 and 0.98 (all violet).
CONSTITUENTS – Albuminoids, Oil and Starch.
PROPERTIES AND ACTION
Rasa : Madhura
Guna : Guru, Sara, Snigdha
Virya : Sita
Vipaka : Madhura
Karma : Sramahara, Balya, Bhagnasadhaka, Hrdya, Kaphakara, Pittahara, Vatahara, Vrsya, Sukrakara, Brmhana, Amavardhaka
IMPORTANT FORMULATIONS – Pugakhanda, Priyala Taila.
THERAPEUTIC USES – Daha, Ksata, Raktapitta, Ksaya.
DOSE – 10 – 20 g. of the drug in powder form.
Latest Govt Job & Exam Updates: