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Файл:Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_5857_Библиотеки_им_академика_М_И_Перельмана.pdf
The bitter substances are mostly of terpenoid
structure, especially the sesquiterpene lactones,
monoterpene iridoids and the secoiridoids example:
Cnicus benedictus (blessed thistle), and Ginkgo
biloba (ginkgo). Iridoids are responsible for
the chief bitter constituents of the plant family
Gentianaceae, Cichorium intybus (chicory),
Valeriana officinalis (valerian) and Quassia bark.
SOME IMPORTANT OF PLANT DRUGS
QUASSIA
Many alkaloids also contribute to the bitter taste
as in the protoberberine isoquinoline alkaloids of
golden seal (Hydrastis canadensis), and Berberis,
the morphine alkaloids, the quinoline alkaloids of
quinine and angostura and the purine alkaloids. In
addition, miscellaneous compounds like ketones
and amino acids are responsible for the bitterness,
as found in hops.
Chemical Constitutents of Quassia
Section 2 Pharmacognosy
229
SENNA
Microscopy of Quassia
Section 2 Pharmacognosy
230
ALOE
Microscopy of Senna
Section 2 Pharmacognosy
231
PODOPHYLLUM
Section 2 Pharmacognosy
232
Microscopy of Podophyllum Root
Section 2 Pharmacognosy
233
DIGITALIS
Section 2 Pharmacognosy
234
Digitoxin
CASCARA
Microscopy of Cascara
Section 2 Pharmacognosy
235
THEVETIA
Section 2 Pharmacognosy
236
SQUILL
Microscopy of Squill
Section 2 Pharmacognosy
237
OLEANDER
Section 2 Pharmacognosy
238
Microscopy of Oleander