Page 198 - PG 504-theoretical notes-phyto-1-2024-2025..

Clinical pharmacy PharmD program Third level Phytochemistry-1 (PG-504)

Second degree of unsaturation p-menthadiene

1,3 2,5 1,8 ∆ 1,4(8) 1(7),2
∆ ∆ ∆ ∆

1,8
Limonene (∆ -p-menthadiene)
Source: Many oils as citrus fruits rind oils

Present as d-liomnene or l-limonene or dl mixture (dipentene)

Uses: - In cosmetics, perfumary and food manufacturing.

- Flavouring and masking agent in medicines.

- It dissolves gall bladder stones (Rowachol)

- Helpful in the treatment of hyperchlesterolemia

- Botanical Insecticide (d-liomnene is more active than l-limonene).
- Moisture and Air cause changes in the composition of some oils on storage.

Terpinolene (∆ 1,4(8) -p-menthadiene)
Source: Coriander, cardomom, Marjoram and orange oils

Uses: Scenting (perfumes), cosmetics, food Industries.

179