Preparative HPLC for large scale isolation, and salting-out assisted liquid–liquid extraction based method for HPLC–DAD determination of khat (Catha edulis Forsk) alkaloids

Table 1 Comparison of the precision and extraction efficiency of SALLE with UAE–SPE

Protocol	Norephedrine^a (µg/g)	% RSD	Cathine^a (µg/g)	% RSD	Cathinone^a (µg/g)	% RSD
SALLE	96 ± 9.1	9.5	1210 ± 120	9.9	1560 ± 190	12.2
UAE–SPE	170 ± 12	7.6	1290 ± 68	5.3	1400 ± 94	6.71

^aValues are represented by mean ± SD (n = 4); RSD relative standard deviation

ISSN: 2661-801X