Page 14 - Pharmacognosy-II (06-PG 303)

Diagram of T.S of Fennel mericarp

Powdered Fennel :

It is yellowish-brown to greenish-brown, characterized micro-
scopically by :

1- Fragments of epicarp cells, polygonal with smooth cuticle and
anomocytic stomata.

2- Fragments of the endocarp composed of thin-walled cells in a parquet-
arrangement.

3- Numerous fragments of yellowish brown vittae composed of thin-
walled polygonal secretory cells.

4- Lignified reticulate parenchyma of the mesocarp composed of thin-
walled lignified cells having oval pits.

5- Fragments of endosperm showing micro-rosette crystals of Ca Ox.,
fixed oil globules and aleurone grains.

Constitutes :

1- Fennel contains 2-6% essential oil mainly consists of anethole (50-
82%), and fenchone (6-27%).

2- Flavonoids, fixed oil, proteins.

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