UPLC (ultra-performance liquid chromatography) detection method of multiple steroid saponins in Yunnan rhizoma paridis or its polygerm strain
A detection method and technology for steroidal saponins, which are applied in the field of UPLC detection of various steroidal saponins, can solve the problems of few research reports on quality evaluation, achieve stable and reliable sample addition and recovery test, shorten separation and analysis time, and repeatability. Stable and reliable effect
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Embodiment 1
[0050] 1 Apparatus and materials
[0051] Waters Acquity H-Class ultra-high performance liquid chromatograph (Waters, USA); KQ-5200E ultrasonic cleaner (40kHz, 250W, Kunshan Ultrasonic Instrument Co., Ltd.); BP211D electronic balance (Sartorius, Germany); METTLER AE240 electronic analytical balance ( Shanghai Mettler-Toledo Instruments Co., Ltd.). Acetonitrile is chromatographically pure (American Sigma Company); water is Watsons distilled water; methanol is analytically pure (Chengdu Kelon Chemical Reagent Factory).
[0052] Saponins I (batch number: MUST-15061611, Purity: 98.34%), Ⅱ (batch number: MUST-15060801, Purity: 98.45%), VI (batch number: MUST-14071904, Purity: 98.67%), Ⅶ (batch number: MUST -14060302, Purity: 99.03%), Dioscorea quinquefolium saponins (batch number: MUST-15081110, Purity: 98.86%) were purchased from Chengdu Master Biotech Co., Ltd.; Chonglou saponin H and Chonglou saponin V were purchased from Sichuan University West China Pharmaceutical The pharmacog...
Embodiment 2
[0085] (1) Take the dried Yunnan Chonglou multi-bud strain to be tested, pulverize, extract with methanol solvent, combine the extracts, and reconstitute the residue after removing the solvent with methanol to prepare the test solution;
[0086] (2) Take the mixture of saponins Ⅰ, Ⅱ, Ⅴ, Ⅵ, Ⅶ, H and Dioscorea nigra to prepare a reference solution;
[0087] (3) Inject the test solution and the reference solution into the ultra-high performance liquid chromatograph, and use the external standard method for detection; the chromatographic conditions are as follows:
[0088] Column: CQUITY BEH C18 chromatographic column, 2.1mm×50mm, 1.7μm;
[0089] ELSD detector conditions: drift tube temperature 55℃, nitrogen pressure 40psi, gain 500, cooling mode;
[0090] Mobile phase: acetonitrile (A)-water (B) system, the gradient program is as follows:
[0091] 0~1min 5%~25%A; 1~2.5min, 25%~30%A; 2.5~4min, 30%~35%A; 4~6min, 35%~40%A; 6~9min, 40% A~45%A; 9~21min, 45%A~50%A; 21~22min, 50%A~70%A; 22~23mi...
Embodiment 3
[0095] (1) Take the dried Yunnan Chonglou multi-bud strain to be tested, pulverize, extract with methanol solvent, combine the extracts, and reconstitute the residue after removing the solvent with methanol to prepare the test solution;
[0096] (2) Take the mixture of saponins Ⅰ, Ⅱ, Ⅴ, Ⅵ, Ⅶ, H and Dioscorea nigra to prepare a reference solution;
[0097] (3) Inject the test solution and the reference solution into the ultra-high performance liquid chromatograph, and use the external standard method for detection; the chromatographic conditions are as follows:
[0098] Column: CQUITY BEH C18 chromatographic column, 2.1mm×50mm, 1.7μm;
[0099] ELSD detector conditions: drift tube temperature 55℃, nitrogen pressure 40psi, gain 500, cooling mode;
[0100] Mobile phase: acetonitrile (A)-water (B) system, the gradient program is as follows:
[0101] 0~1min 10%~25%A; 1~2.5min, 25%~30%A; 2.5~4min, 30%~35%A; 4~6min, 35%~40%A; 6~8min, 40% A~45%A; 8~21min, 45%A~50%A; 21~23min, 50%A~90%A. Flow ...
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