Ashoka (St. Bk.) : know more about Ayurvedic prep.
Ashoka (St. Bk.)
Ashoka consists of dried stem bark of Saraca asoca (Rose.) De. Willd , Syn. Saraca
indica Linn. (Fam. Leguminosae), collected in spring from mature, wild or cultivated trees,
found in Central and Eastern Himalayas, Western Ghats and Deccan.
SYNONYMS
Sanskrit : Kankeli
Assamese : Ashoka
Bengali : Ashoka
English : Asok Tree
Gujrati : Ashoka
Hindi : Ashoka
Kannada : Ashokadamara, Ashokamara, Kankalimara
Kashmiri : Ashok
Malayalam : Asokam
Marathi : Ashok
Oriya : Ashoka
Punjabi : Asok
Tamil : Asogam, Asogu, Asokam
Telugu : Ashokapatta
Urdu : --
DESCRIPTION
a) Macroscopic
Bark channelled, externally dark green to greenish grey, smooth with circular
lenticels and transversely ridged, sometimes cracked, internally reddish-brown with fine
longitudinal strands and fibers, fracture splintery exposing striated surface, a thin
whitish continuous layer is seen beneath the cork layer, taste, astringent.
b) Microscopic
Transverse section of stem bark shows periderm consisting of a wide layer of cork,
radially flattened narrow cork cambium, secondary cortex wide with one or two
continuous layers of stone cells with many patches of sclereids, parenchymatous tissue
contains yellow masses and prismatic crystals: secondary phloem consists of phloem
parenchyma, sieve tubes with companion cells and phloem fibres occuring in groups,
crystal fibres present.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 per cent, Appendix 2.2.2.
Total Ash Not more than 11 per cent, Appendix 2.2.3.
Acid-insoluble ash Not more than 1 per cent, Appendix 2.2.4.
Alcohol (90 per cent) Not less than 15 per cent, Appendix 2.2.6.
soluble extractive
Water-soluble extractive Not less than 11 per cent, Appendix 2.2.7.
CONSTITUENTS - Tannins and a crystalline glycoside.
PROPERTIES AND ACTION
Rasa : Tikta, Kasaya
Guna : Laghu, Ruksa
Virya : sita
Vipaka : Katu
Karma : Hardya, Visaghna, Grahi, Varnya, sothahara
IMPORTANT FORMULATIONS - Asokarista, Asokaghrta
THERAPEUTIC USES - sotha, Daha, Asrgdara, Apaci, Raktadosa
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DOSE - 20-30 g of the drug for decoction.
Ashoka consists of dried stem bark of Saraca asoca (Rose.) De. Willd , Syn. Saraca
indica Linn. (Fam. Leguminosae), collected in spring from mature, wild or cultivated trees,
found in Central and Eastern Himalayas, Western Ghats and Deccan.
SYNONYMS
Sanskrit : Kankeli
Assamese : Ashoka
Bengali : Ashoka
English : Asok Tree
Gujrati : Ashoka
Hindi : Ashoka
Kannada : Ashokadamara, Ashokamara, Kankalimara
Kashmiri : Ashok
Malayalam : Asokam
Marathi : Ashok
Oriya : Ashoka
Punjabi : Asok
Tamil : Asogam, Asogu, Asokam
Telugu : Ashokapatta
Urdu : --
DESCRIPTION
a) Macroscopic
Bark channelled, externally dark green to greenish grey, smooth with circular
lenticels and transversely ridged, sometimes cracked, internally reddish-brown with fine
longitudinal strands and fibers, fracture splintery exposing striated surface, a thin
whitish continuous layer is seen beneath the cork layer, taste, astringent.
b) Microscopic
Transverse section of stem bark shows periderm consisting of a wide layer of cork,
radially flattened narrow cork cambium, secondary cortex wide with one or two
continuous layers of stone cells with many patches of sclereids, parenchymatous tissue
contains yellow masses and prismatic crystals: secondary phloem consists of phloem
parenchyma, sieve tubes with companion cells and phloem fibres occuring in groups,
crystal fibres present.
IDENTITY, PURITY AND STRENGTH
Foreign matter Not more than 2 per cent, Appendix 2.2.2.
Total Ash Not more than 11 per cent, Appendix 2.2.3.
Acid-insoluble ash Not more than 1 per cent, Appendix 2.2.4.
Alcohol (90 per cent) Not less than 15 per cent, Appendix 2.2.6.
soluble extractive
Water-soluble extractive Not less than 11 per cent, Appendix 2.2.7.
CONSTITUENTS - Tannins and a crystalline glycoside.
PROPERTIES AND ACTION
Rasa : Tikta, Kasaya
Guna : Laghu, Ruksa
Virya : sita
Vipaka : Katu
Karma : Hardya, Visaghna, Grahi, Varnya, sothahara
IMPORTANT FORMULATIONS - Asokarista, Asokaghrta
THERAPEUTIC USES - sotha, Daha, Asrgdara, Apaci, Raktadosa
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