Piper longum Linn Dried spike is used for diseases of respiratory tract, viz. cough, bronchitis, asthma,
By Ashwani Kumar
| September 19th 2009 11:20 AM | Print
Scientific Name Piper longum Linn
Used Part Dried spike
Distribution Area A climber occurring in the hotter parts of India, from Central Himalayas to Assam, Khasi and Mikir hills, lower hills of Bengal, and evergreen forests of western ghats from Konkan to Travancore: and also from Car Nicobar Islands.
Common Uses . The fruits as well as the roots are attributed with numerous medicinal uses, and may be used for diseases of respiratory tract, viz. cough, bronchitis, asthma, etc.; as counter-irritant and analgesic when applied locally for muscular pains and inflammation; as snuff in coma and drowsiness and internally as carminative; as sedative in insomnia and epilepsy; as general tonic and haematinic; as cholagogue in obstruction of bile duct and gall bladder; as an emmenagogue and abortifacient; and for miscellaneous purposes as anthelmintic, and in dysentery and leprosy.
Indian Long pepper forms one of the ingredients of Ayurvedic drug `Trikatu' whose constituents and piperin (a major alkaloid of peppers) are reported to possess bioavailability enhancing activity which increases the efficacy of the co-administered Ayurvedic formulations or medicaments. It also forms the ingredient of Ayurvedic drugs `Mrtyunjayarasavati' used for chronic sinusitis and `Anand Bhairava Ras', used for the treatment of amoebiasis
Besides fruits, the roots and thicker parts of stem are cut and dried and used as an important drug (Piplamul) in the Ayurvedic and Unani systems.
Similar crude drugs (1)P. peepuloides, (2) P. retrofractum.
Pharmacological Effect Alkaloid A showed significant in vitro antitubercular activity against Mycobacterium tuberculosis H-37 Rv strain; it inhibited the growth of the bacillus in 20µg./ml. concentrations.
Alcoholic extracts of the dry fruits and aqueous extracts of the
leaves showed activity against Micrococcus pyogenes var. aureus and Escherichia coli. Ether extract of the fruits showed larvicidal properties.
In China, the unsaponifiable matter of Piper longum oil is reported to significantly decrease the serum total cholesterol and hepatic cholesterol in hyper cholesterolemic mice induced by feeding with 5% lard containing diet. The oil constituents also reported to inhibit the increase in serum total cholesterol induced by triton in mice.
Others The fruits are used as spice and also in pickles and preserves. They have a pungent pepper-like taste and produce salivation and numbness of the mouth
In Chota Nagpur the root is used to ferment rice beer. In Andaman Islands, the leaves are chewed like betel leaves.
There are three grades of Piplamul, Grade I with thick roots and underground stems fetching higher price than Grade II or III, which comprise either thin roots, stems or broken fragments. Commercial drug consists almost entirely of transversely cut pieces (length, 5-25 mm.; diam., 2-7 mm.) which are cylindrical, straight or slightly curved, and some with distinct, swollen internodes showing a number of leaf and rootlet scars. The surface of the pieces is dirty, light brown in colour. The drug has a peculiar odour and a pungent bitter taste producing numbness on the tongue. It contains piperine (0.15-0.18%), piplartine (0.13-0.20%), and traces of a yellow crystalline pungent . alkaloid (m.p. 116-17°). Other constituents found in the drug include triacontane, dihydrostigmasterol, an unidentified steroid (m.p. 122-
23°), reducing sugars and glycosides. Two new alkaloids, named
piperlongumine (probably identical with piplartine; (C17H19O5N, m.p. 124°; 0.2-0.25%) and piperlonguminine (C16H19O3N, m.p. 166-80°; 0.02%), besides piperine have been isolated from the roots in another investigation.