Ir spectra of ursolic acid
WebThe inhibitory potency of ursolic acid extracted from Ilex paraguariensis, a plant used in South American population for a tea preparation known as mate´, and its derivatives to inhibit aromatase activity was assessed and compared to a phytoestrogen apigenin and a steroidal aromatase ... Infrared spectra (IR) were recorded on a NICO-LET-210 ... WebAbstract. In this article, HRD2 double-beam grating monochromator was used to record the laser Raman spectra of the ursolic acid and get the Raman spectral characteristics of the …
Ir spectra of ursolic acid
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WebJournals Royal Society WebJan 23, 2024 · FT-IR spectra showed that in the gel state, the aliphatic C–H stretching vibration band of ursolic acid skeleton appeared at a lower wavenumber (2997 cm −1) compared with that in the solid state (3006 cm −1). It illustrated that the increased van der Waals interaction of aggregated gelators drive the gel formation.
WebApr 1, 2024 · Infrared spectroscopy (wavelengths ranging from 750–25,000 nm) offers a rapid means of assessing the chemical composition of a wide range of sample types, both for qualitative and quantitative analyses. Its use in the food industry has increased significantly over the past five decades and it is now an accepted analytical technique for …
WebAug 9, 2010 · Acetic acid n-octadecyl ester. Formula: C 20 H 40 O 2; Molecular weight: 312.5304; ... This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database . Mass spectrum (electron ionization) Go To: Top, Phase change data, IR … WebThe results showed that ursolic acid could aggregate into organogels in bromobenzene and some alcoholic solvents. It was proved that the driving forces for gel formation were intermolecular hydrogen bonding and packing interaction between the rigid backbones of ursolic acid through Fourier-transform infrared (FT-IR) spectra.
WebFeb 18, 2024 · Ursolic acid (UA) as a natural ursane-triterpenoid has rich pharmacological activities. We have found that it possesses aggregation properties and could self …
WebJan 23, 2024 · FT-IR spectra showed that in the gel state, the aliphatic C–H stretching vibration band of ursolic acid skeleton appeared at a lower wavenumber (2997 cm −1) … darlington amplifier is an emitter followerWebUrsolic acid was isolated from the methanolic extracts of the leaves of A. scholaris. The isolated marker ursolic acid was authenticated by UV, IR, Mass and NMR spectroscopy. A simple sensitive and HPTLC method was developed for the quantitative analysis of ursolic acid in leaves of A. scholaris. darlington alf rhode islandWebApr 26, 2024 · Ultra-performance liquid chromatography (UPLC) interfaced with atmospheric pressure chemical ionization mass–spectrometry was used to separate and quantify ursolic acid (UA) and oleanolic acid (OA) in human plasma. UA and OA were extracted from 0.5 mL human plasma using supported liquid extraction and separated utilizing an Acquity UPLC … darlington and district badminton leagueWebData treatment. The UV/Vis spectra collected are taken mainly in the liquid phase (this reflects the nature of the literature the spectra are abstracted from). Consequently the data on the solvent used are included. In some rare cases when data published were obtained in the gas or vapor phases just such spectra were included in the collection. bismarck to harvey ndWebJan 1, 2024 · In infrared spectroscopy, OA and UA show strong absorption bands at stretching frequencies 3562 [hydroxyl functional group (OH)], 2937 [carboxylic acid (COOH) functionality], ... Rapid solubility determination of the triterpenes oleanolic acid and ursolic acid by UV-spectroscopy in different solvents. Phytochemistry Letters, 2 (2009), pp. 85-87. bismarck to grand rapids miWebMar 12, 2024 · In thecurrent research work,eleven metal complexes were synthesized from the hydrazide derivative of ursolic acid. Metal complexes of tin, antimony and iron were synthesized and characterized by FT-IR and NMR spectroscopy. The antibacterial and antioxidant activities were performed for these complexes, which revealed that the metal … bismarck to grand forks milesWebJan 1, 2024 · IR spectra showed frequencies of the functional groups characteristic of UA (Fig. A.1 ). However, to elucidate the structure of a complex molecule such as ursolic acid … darlington and burgess park camping