TY - JOUR
T1 - Simultaneous determination of eight anthraquinones in Semen Cassiae by HPLC-DAD
AU - Xu, Lijia
AU - Chan, Chi On
AU - Lau, Ching Ching
AU - YU, Zhiling
AU - Mok, Daniel K.W.
AU - Chen, Sibao
N1 - Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2012
Y1 - 2012
N2 - Introduction Semen Cassiae (SC), a traditional Chinese herbal medicine for the treatment of various diseases, is known to contain active anthraquinone ingredients. However, since the content of some anthraquinones is too low, previous analytical methods only allow the quantitation of a few anthraquinones or a hydrolysis step has to be included in the sample preparation. A rapid and accurate method to examine the content of as many anthraquinones as possible in SC would be desirable. Objective To develop a rapid, sensitive and accurate high-performance liquid chromatography-diode array detection (HPLC- DAD) method to simultaneously quantify eight major anthraquinones (obtusifolin-2-glucoside, aurantio-obtusin, aloe- emodin, rhein, obtusifolin, emodin, chrysophanol and physcion) in SC. Methodology The separation of anthraquinones was achieved on a C18-column with a gradient elution using acetonitrile and 0.1% phosphoric acid. The detection wavelength was 278 nm and the analysis finished within 25 min. Results The limits of detection of these compounds ranged from 0.07 to 0.15 μg/mL while the limits of quantitation ranged from 0.24 to 0.51 μg/mL. All calibration curves showed good linearities (r2 > 0.999) within the test ranges. This validated method was successfully used to analyse 22 batches of SC samples collected from various geographical locations. Conclusion The method was validated to be simple, rapid, accurate and reliable to simultaneously determine eight major anthraquinones in SC. Meanwhile, a more specific anthraquinone, obtusifolin, was proposed to serve as a marker for SC, replacing chrysophanol.
AB - Introduction Semen Cassiae (SC), a traditional Chinese herbal medicine for the treatment of various diseases, is known to contain active anthraquinone ingredients. However, since the content of some anthraquinones is too low, previous analytical methods only allow the quantitation of a few anthraquinones or a hydrolysis step has to be included in the sample preparation. A rapid and accurate method to examine the content of as many anthraquinones as possible in SC would be desirable. Objective To develop a rapid, sensitive and accurate high-performance liquid chromatography-diode array detection (HPLC- DAD) method to simultaneously quantify eight major anthraquinones (obtusifolin-2-glucoside, aurantio-obtusin, aloe- emodin, rhein, obtusifolin, emodin, chrysophanol and physcion) in SC. Methodology The separation of anthraquinones was achieved on a C18-column with a gradient elution using acetonitrile and 0.1% phosphoric acid. The detection wavelength was 278 nm and the analysis finished within 25 min. Results The limits of detection of these compounds ranged from 0.07 to 0.15 μg/mL while the limits of quantitation ranged from 0.24 to 0.51 μg/mL. All calibration curves showed good linearities (r2 > 0.999) within the test ranges. This validated method was successfully used to analyse 22 batches of SC samples collected from various geographical locations. Conclusion The method was validated to be simple, rapid, accurate and reliable to simultaneously determine eight major anthraquinones in SC. Meanwhile, a more specific anthraquinone, obtusifolin, was proposed to serve as a marker for SC, replacing chrysophanol.
KW - anthraquinone
KW - Cassia obtusifolia L.
KW - HPLC-DAD
KW - obtusifolin
KW - Semen Cassiae
UR - http://www.scopus.com/inward/record.url?scp=84857233812&partnerID=8YFLogxK
U2 - 10.1002/pca.1331
DO - 10.1002/pca.1331
M3 - Journal article
C2 - 21618311
AN - SCOPUS:84857233812
SN - 0958-0344
VL - 23
SP - 110
EP - 116
JO - Phytochemical Analysis
JF - Phytochemical Analysis
IS - 2
ER -