About Lesson
Scarification & Expression Methods for Essential Oils or fragnance
- Based on puncturing & squeezing of the plant material to liberate the oil, which is collected.
- Used for Preparation of heat sensitive oils, present in large amounts in outer peels of fruits
- g. Citrus fruits (Rutaceae) as orange, lemon & bergamot.
Steps of scarification and expression
- Squeezing of the peel under a stream of water —> emulsion (volatile oil + water + pectin + cellulose + pigments + traces of waxes).
- Centrifugation (to remove water + pectin + cellulose)
- Strong cooling (to remove waxes)