Shorea robusta, commonly known as sal tree, is a tree native to Nepal, India, and Bhutan that can reach 30 meters in height. Its oleo-resin is extracted from the bark, leaves, fruits, and seeds using solvent extraction. The resin contains chemicals like essential oils, dipterocarpol, and asiatic acid. Locally, the resin is used to treat conditions like dysentery, diarrhea, boils, and toothaches. Various parts of the plant also have traditional medicinal uses as an astringent and for skin diseases.

1. PRESENTED BY: Nabina, Puspa (NP)
UCMS, B.Pharma
4th batch

2. Shorea robusta

3. Synonyms:
 Saal, sakhwa, sal tree, jin, agrs, dhusin.

4. Biological source:
 It is the oleo-resin obtained from bark, leaves, fruits
and seed oils of shorea robusta gearth belonging to
family Dipterocarpaceae.

5. Geographical source:
 It is widely distributed in Nepal, India and Bhutan.
 It is distributed throughout Nepal to about 1400 m in
open sub-Himalayan tracts and outer region of the
hills.

6. Cultivation and collection:
 It is propagated by seedling methods.
 It is light demander.
 It grows on wide range of soil type except in the very
sandy, gravelly soils.

7. Preparation:
 The plant oleo-resin was shed dried and successfully
extracted with different solvents using soxhlet
apparatus.
 The extracts were filtrate and concentrated under
reduced pressure below 40°c to dryness.

8. Macroscopic characters:
 Tall, gregarious tree of
about 30 m height forming
dominant forests.
 Leaves 6-22 × 4-16 cm,
alternate, petiolate, ovate,
oblong, entire, glabrous.
 Flowers in axillary or
terminal panicles, cream
coloured.
 Fruits samara wings,
brownish yellow.

9. Chemicals constituents:
 Sal resin contains essential oil, dipterocarpol,
dammarenolic acid, asiatic acid, ᾀ- amyrin,
shoreaphenol.

10. Uses:
 The resins is valued for dysentery, gonorrhea, diarrhea,
boils and toothaches.
 A warm leaf is applied to swollen part of the body for
its quick effects.
 Seed oil is applied in case of skin disease, illumination.
 Bark and leaves are astringent, acrid, antihelmenthic,
bacterial infections, anemia etc.