Hexane turmeric extract and Isolation of
curcuminoids
Dry rhizomes of Curcuma longa (1.0 kg)
were extracted with hexane (6 L) for 10 h using a
soxhlet extractor to give hexane turmeric extract
as a yellow oil weighing 53.75 g (5.38% dry
weight). The hexane solution was evaporated to
dryness by a rotary evaporator to give hexane
turmeric extract containing 59.92% ar-turmerone
as the major compound. The hexane turmeric
extract was analyzed by GC-MS (Krittika et al.,
2007). The residue was then extracted with ethyl
acetate (6 L) for 40 h using a soxhlet extractor.
The ethyl acetate solution was concentrated,
filtered and recrystallized with ethanol to produce
32.76 g and 32.28% curcuminoids as orange
crystals, with a melting point of 176-178°C
(Jayaprakasha et al., 2005). The crystals contained
86.5% curcumin, 13.4% demethoxycurcumin and
0.1% bisdemethoxycurcumin by HPLC analysis.
The curcuminoids were analyzed by HPLC
(Marsin et al., 1993).
Hexane turmeric extract and Isolation ofcurcuminoidsDry rhizomes of Curcuma longa (1.0 kg)were extracted with hexane (6 L) for 10 h using asoxhlet extractor to give hexane turmeric extractas a yellow oil weighing 53.75 g (5.38% dryweight). The hexane solution was evaporated todryness by a rotary evaporator to give hexaneturmeric extract containing 59.92% ar-turmeroneas the major compound. The hexane turmericextract was analyzed by GC-MS (Krittika et al.,2007). The residue was then extracted with ethylacetate (6 L) for 40 h using a soxhlet extractor.The ethyl acetate solution was concentrated,filtered and recrystallized with ethanol to produce32.76 g and 32.28% curcuminoids as orangecrystals, with a melting point of 176-178°C(Jayaprakasha et al., 2005). The crystals contained86.5% curcumin, 13.4% demethoxycurcumin and0.1% bisdemethoxycurcumin by HPLC analysis.The curcuminoids were analyzed by HPLC(Marsin et al., 1993).
การแปล กรุณารอสักครู่..
