Halløjsa endnu en gang.
Jeg er gået igang med endnu et projekt i form af ekstraktion af alkaloider fra Peganum Harmala frø.
Her er metoden som jeg lige har et teoretisk spørgsmål til:
The seeds of Peganum harmala are crushed or ground [3] and covered with 3 times their weight of 3% acetic acid [4]. A thick dough is formed which is pressed [5] after 2 or 3 days. Then, twice the weight of seeds worth of acetic acid is added and after maceration they are pressed again. The two liquids are combined and sodium chloride (100 grams per liter of liquid; i.e. 1 gram per 10 ml) is added. This is then refrigerated until cold and the bulk of the liquid is siphoned off leaving the crystalline residue layer on the bottom. The crystalline residue is filtered with suction (i.e. with a Buchner Funnel) and then redissolved in hot water. The subsequent addition of sodium chloride and chilling will cause the hydrochlorides (harmine and harmaline) to precipitate as a "crystalline mush".
Det er den sidste sætning der undrer mig; omdanner saltet acetatet til hydrochlorid?
Eller er det en fejl og derimod acetaterne der er uopløselige i kold salt-opløsning?
Ikke at det gør så forfærdeligt meget om jeg kommer til at stå med Hcl- eller acetatsalt, men kunne godt tænke mig at vide hvilket jeg ender op med
//blazR
