What is the use of calcium hydroxide in the alkaloidal extraction?
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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What is the use of calcium hydroxide in the alkaloidal extraction?
Transcribed Image Text:Defat powdered plant
material using a non polar
solvent (Petroleurm ether
or N-Hexane)
Moist with water and
Extract with organic
treat with NH3 and
solvent like chloroform
Dil. Lime solution
or ether
Treat organic phase (Free
alkaloid) by separated
filtration or extraction w
organic solvent
Separate and basify
with NaHCO3 or NH3
Dissolve extract in dil.
aq acid, HCI or H2504
to form alkaloidal salt
Evaporate to
dryness
Collect crude
alkaloids
↑
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