Page 156 - Pharmacognosy-II (06-PG 303)

Juices

Definition and preparation: Juices are fluid plant saps composed of aqueous
liquid containing dissolved substances. They are usually present in cells (e.g.
Aloes) or cavities ( e.g. Kino or orange).
Juices could be obtained from plants by incision (e.g. Kino), drainage of cut
organs (e.g. Aloes) or by expression (e.g. Echinaceae).
After collection they are dried by evaporation of the water contents

1.Aloes

Botanical origin:The concentrated and dried juice of the leaves of various Aloe
species family liliaceae. It contains not less than 28.0 per cent of
hydroxyanthracene derivatives, expressed as barbaloin.

Preparation
• Aloe juice is in the pericycle outside each vascular bundle, while Aloe gel
at the lower surface of the leaf.
• The Aloe juice is prepared by cutting transversely. The collected juice is
then boiled for concentration

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