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A simple, rapid and precise reverse-phase high performance liquid chromatographic method has been developed for the quantitative determination of eugenol from the extract of dried powder of Cinnamomum tamala leaves and its polyherbal formulation. Chromatographic analysis was carried out on Zorbax C18 column (150 mm × 4.6 mm, 5 μm) with a mobile phase of mixture of water, acetonitrile and methanol in the volume ratio of 50:40:10, at a flow rate of 1.0 mL min-1. Quantitation was performed using a UV-visible detector at 210 nm. Good linearity was obtained over the ranges of 0.20–3.0 μg mL-1 for eugenol. 相似文献
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Dighe Vidya V. Sane Ramesh T. Menon Shashikumar N. Tambe Harsha N. Pillai Sreedevi 《平面色谱法杂志一现代薄层色谱法》2006,19(4):319-323
JPC – Journal of Planar Chromatography – Modern TLC - A normal-phase high-performance thin-layer chromatographic (HPTLC) method has been established for quantitative estimation of... 相似文献
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Dighe Vidya V. Pathak Gayatri M. Tulpule Ketan M. Gokarn Vijay N. 《平面色谱法杂志一现代薄层色谱法》2007,20(3):179-182
JPC – Journal of Planar Chromatography – Modern TLC - A sensitive high-performance thin-layer chromatographic method has been established for quantification of apigenin in dried root... 相似文献
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Satish N. Dighe Ravindra V. Bhattad Raghunath R. Kulkarni Kishor S. Jain 《合成通讯》2013,43(23):3522-3527
The synergy of the combined use of DMSO and an ionic liquid viz. (bbim)+Br? has brought about a rapid and efficient esterification of sodium carboxylates with acyl and alkyl halides under ambient conditions in excellent isolated yields (90–95%) in short reaction times (12–40 min). 相似文献
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Satish N. Dighe 《Tetrahedron letters》2009,50(45):6139-6142
The synergy of the combined use of DMSO and an ionic liquid viz. (bbim)+Br− has brought about a mild, convenient, efficient, and rapid protocol for the synthesis of 1-substituted-1H-1,2,3,4-tetrazoles via the condensation of amines, triethyl orthoformate, and sodium azide at ambient temperature in excellent isolated yields (85-90%). The inherent Bronsted acidity of ionic liquid and high polarity of both IL and DMSO resulted in a significant enhancement in the reaction rate. 相似文献
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An LC method has been developed for the simultaneous quantitative determination of eugenol, cinnamaldehyde and isoeugenol from dried leaf powder of Cinnamomum tamala Nees & Eberm and stem bark powder of Cinnamomum zeylanicum Breyn. Linear responses for eugenol, cinnamaldehyde and isoeugenol were obtained over the concentration ranges of 0.20–2.50, 5.00–100.00 and 0.10–1.00 μg mL?1, respectively. 相似文献
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Juliana S Luz Celso RR Ramos Márcia CT Santos Patricia P Coltri Fernando L Palhano Debora Foguel Nilson IT Zanchin Carla C Oliveira 《BMC biochemistry》2010,11(1):22
Background
The archaeal exosome is formed by a hexameric RNase PH ring and three RNA binding subunits and has been shown to bind and degrade RNA in vitro. Despite extensive studies on the eukaryotic exosome and on the proteins interacting with this complex, little information is yet available on the identification and function of archaeal exosome regulatory factors. 相似文献10.
JPC – Journal of Planar Chromatography – Modern TLC - A sensitive and accurate high-performance thin-layer chromatographic method has been developed, validated, and used for... 相似文献