course technologies for growing medicinal and aromatic plants

c) Shredding plant product: by increasing the contact surface of the plant product and
solvent extraction shrinks and grows during the extraction efficiency. The degree of
grinding is determined according to the method of extraction used: extraction by
maceration, infusion / decoction - shredding in larger particles, extraction by
percolation - fine grinding powder. Machinery: die grinders or shredders
d) Homogenization - plants are manually homogenized and the quality parameters of
the homogenized product are checked, recording the result of the flow analysis
e) Extraction of bioactive compounds can be achieved by either of the above. The
simplest method and providing the appropriate degree of extraction of active
principles from plants is soaking. The process is done in glass or stainless steel, with
intermittent shaking of the mixture to enhance extraction.
To obtain aqueous extracts by maceration working parameters are :
Extraction solvent ……………….. distilled water
Concentrate extract ……………..…..8-10% (g plant /mL water)
Extraction temperature……..……room temperature
Extraction time………………..…. 24 hours.
The working parameters for obtaining the hydro alcoholic extracts by maceration are :
Extraction solvent………………… alcohol 30-70%
Concentrate extract …………………8-10% (g plant /mL alcohol)
Extraction temperature …………… room temperature
Extraction time ………………………8-10 days