Page 336 - Applied Pharmacognosy

Problems of UTnypreegs uoflaCtheedmHicearlbmaal rDkreursgs
 DeteriorationofHerbalDrugs Light

 Photo-decomposition occurs with Wormseed
santonin, the principal constituent of
wormseed, which on exposure to light
darkensandeventuallybecomesblack.

Santonin

 Directsunlight cancausedecomposition
ofvitaminsin codliveroil .

 Powderedrhubarb storedinclearglass Fresh Rhubarb
jars rapidly changes as the exposed Stored Rhubarb

surfaces turning from yellow to more
reddishcolor.

 Ingeneral,drugsshouldbeprotectedby

suitable light-proofwrapping orbythe
useof ambercolorcontainers .