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PRESENTATION ON
ASHOKA
- Neel Ratnam
DIPSAR
University of Delhi
It is the type of Condensed tannin.
Synonyms:
The another name is Ashoka, Ashoka bark.
Biological source:
It is obtained from dried stem bark of the plant
Saraca indica Linn.
Family:
It belongs to the family Leguminosae.
WHAT IS CONDENSED TANNIN?
 It is also known as CATECHOL TANNIN.
 They lack sugar in their structures.
 It do not hydrolysed as it is less soluble in water.
 On dry distillation they give catechol.
 Their structures are similar to Flavonoid.
 It is present in cinnamon, cinchona and tea.
Plant of Saraca indica Linn.
Geographical
Source:
It is distributed in
South Asia i.e. in
Malaysia, Indonesia,
Sri Lanka and India.
In India mainly found in
central and eastern
Himalaya.
CULTIVATION AND COLLECTION
 It is found at an altitude of 750m in the Himalayas, Khasi,
Garo and Lushai hills.
 It thrives in shady locations, especially near water in semi-
dry to wet areas in tropical and subtropical climates.
 It is an evergreen tree of height 9m.
 It can be easily propagated from seeds.
 It bear dark red colored flowers.
 The bark is marked by bluish and ash white patches of
Lichens.
 Bark is collected from the plant by making transverse and
longitudinal incisions.
CULTIVATION
COLLECTION BY LONGITUDINAL INCISIONS METHOD.
MACROSCOPIC CHARACTERS
 Colour :Outer side is dark brown or almost black with warty
surface. Internally, it is reddish-brown with fine longitudinal
striation.
 Odour :None
 Taste :Astringent and bitter
 Size :Length is up to 50 cm and thickness is 1 cm.
 Shape :Occurs in form of channels.
DRIED STEM BARK OF THE PLANT SARACA
INDICA LINN.
MICROSCOPIC CHARACTERS
 Phloem(cork) and
phelloderm form the
outer most layers.
 Cortex shows the
presence of stone
cells.
 Sclerenchymatous
patches are found in
phloem.
 Medullar rays are
multisteriate.
CHEMICAL CONSTITUENTS
It contains
• Condensed tannin(6%)
• Haemotoxylin
• Ketosterol(androgenic in nature)
• Saponin
• Calcium
• Iron compounds
• Glycoside P2
 The activity of drug is due to the presence of steroidal
component and calcium salt.
USES:
 Uterine tonic and it stimulate the uterus by prolonged and
frequent uterine contraction.
 It is used in uterine bleeding.
 Useful in menorrhagia.
 Sedative
 Oxytocic
Ashoka

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Ashoka

  • 1. PRESENTATION ON ASHOKA - Neel Ratnam DIPSAR University of Delhi
  • 2. It is the type of Condensed tannin. Synonyms: The another name is Ashoka, Ashoka bark. Biological source: It is obtained from dried stem bark of the plant Saraca indica Linn. Family: It belongs to the family Leguminosae.
  • 3. WHAT IS CONDENSED TANNIN?  It is also known as CATECHOL TANNIN.  They lack sugar in their structures.  It do not hydrolysed as it is less soluble in water.  On dry distillation they give catechol.  Their structures are similar to Flavonoid.  It is present in cinnamon, cinchona and tea.
  • 4. Plant of Saraca indica Linn.
  • 5. Geographical Source: It is distributed in South Asia i.e. in Malaysia, Indonesia, Sri Lanka and India. In India mainly found in central and eastern Himalaya.
  • 6. CULTIVATION AND COLLECTION  It is found at an altitude of 750m in the Himalayas, Khasi, Garo and Lushai hills.  It thrives in shady locations, especially near water in semi- dry to wet areas in tropical and subtropical climates.  It is an evergreen tree of height 9m.  It can be easily propagated from seeds.  It bear dark red colored flowers.  The bark is marked by bluish and ash white patches of Lichens.  Bark is collected from the plant by making transverse and longitudinal incisions.
  • 8. COLLECTION BY LONGITUDINAL INCISIONS METHOD.
  • 9. MACROSCOPIC CHARACTERS  Colour :Outer side is dark brown or almost black with warty surface. Internally, it is reddish-brown with fine longitudinal striation.  Odour :None  Taste :Astringent and bitter  Size :Length is up to 50 cm and thickness is 1 cm.  Shape :Occurs in form of channels.
  • 10. DRIED STEM BARK OF THE PLANT SARACA INDICA LINN.
  • 11. MICROSCOPIC CHARACTERS  Phloem(cork) and phelloderm form the outer most layers.  Cortex shows the presence of stone cells.  Sclerenchymatous patches are found in phloem.  Medullar rays are multisteriate.
  • 12. CHEMICAL CONSTITUENTS It contains • Condensed tannin(6%) • Haemotoxylin • Ketosterol(androgenic in nature) • Saponin • Calcium • Iron compounds • Glycoside P2  The activity of drug is due to the presence of steroidal component and calcium salt.
  • 13. USES:  Uterine tonic and it stimulate the uterus by prolonged and frequent uterine contraction.  It is used in uterine bleeding.  Useful in menorrhagia.  Sedative  Oxytocic