Table 1.

Extraction of yohimbine from various natural sources.

Natural source	Plant part	Method of isolation	% yield	References
Pausinystalia yohimbe	Stem bark	HPTLC	0.56 mg/g	[24]
Pausinystalia yohimbe	Stem bark	Differential pulse voltammetry	2.3 μmol/L	[25]
Pausinystalia yohimbe	Stem bark	Non-aqueous capillary electrophoresis	1.17 mg/100 mg	[26]
Rauvolfia serpentina	Stem bark	Differential pulse voltammetry	2.9 μmol/L	[25]
Rauvolfia serpentina	Leaf	HPLC	0.537 mg/g	[27]
Rauvolfia serpentina	Root	HPLC	0.584 mg/g	[27]
Rauvolfia verticillata	Root	Ultrasonic-assisted extraction	3.841 mg/g	[28]
Rauwolfia serpentina	Whole plant	Column chromatography	2.1 mg/g	[29]
Rauvolfia tetraphylla	Leaves	HPLC	6.11%	[30]
Tribulus terrestris	Whole plant	UHPLC–MS/MS	62.74 pg/mg	[31]
Nicotiana tabacum	Stem	UHPLC–MS/MS	20.28 pg/mg	[31]
Peganum harmala	Seed	UHPLC–MS/MS	7.25 pg/mg	[31]
Rauvolfia verticillata	Root	pH-zone-refining counter-current chromatography	7.0 mg/g	[32]