Results 1 to 10 of about 22,161 (255)
Determination of Hansen solubility parameters of water-soluble proteins using UV–vis spectrophotometry [PDF]
Heliyon, 2023 Determination of solubility parameters by dissolution tests are difficult for some valuable molecules, such as proteins, where the quantities available are small, UV–vis spectroscopy can determine dissolved concentrations of even small amounts of ...
Neveen AlQasas, Daniel Johnson
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Evaluating the Creaming of an Emulsion via Mass Spectrometry and UV–Vis Spectrophotometry [PDF]
ACS Omega, 2018 The creaming behavior of a turbid oil-in-water emulsion was observed via the processes of multiphoton ionization time-of-flight mass spectrometry (MPI-TOFMS) and ultraviolet-visible spectrophotometry (UV-vis), and the results were compared. The transmittance measurement by UV-vis showed that the turbidity of the toluene emulsion was decreased with time.
Ryo Shinoda, Tomohiro Uchimura
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Estimation of Fisetin in Strawberry (Fragaria ananassa) by UV-Vis Spectrophotometry [PDF]
Research and Innovation in Food Science and Technology, 2023 Flavonoids are naturally occurring plant molecules. Fisetin belongs to a class of flavonoids; it is a bioactive polyphenolic flavanol molecule found in fruits and vegetables with potential pharmacological activities. This study was designed to validate a
Subhadip Chakraborty +2 more
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Content determination of ampicillin by Ni(ii)-mediated UV-Vis spectrophotometry. [PDF]
RSC Adv, 2022 Ampicillin could be degraded under alkaline conditions, of which the degradation products formed a complex with Ni 2+ in a ratio of 2 : 1 in ammonium hydroxide.
Lin Y, Cen S.
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Determination of total flavonoids in three Sedum crude drugs by UV-Vis spectrophotometry. [PDF]
Pharmacogn Mag, 2010 A simple, rapid UV-Vis spectrophotometry method for the determination of total flavonoids in Sedum sarmentosum Bunge., S. lineare Thunb., and S. erythrostictum Migo. was developed, with a good linearity, precision, and stability. The detection wavelength was set at 500 nm, and an extraction solvent was optimized.
Chen Y, Wang J, Wan D.
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Química Nova, 2004 Spectrophotometry is one of the most widespread analytical techniques due to its simplicity, reliability, and low-cost instrumentation for both direct measurements and coupled to other techniques or processes such as chromatography, electrophoresis and ...
Fábio R. P. Rocha +1 more
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Descriminant analysis of flowers, leaves, stems of combretum indicum varr.M and Varr.B with UV-vis spectrophotometric chemometric method [PDF]
E3S Web of Conferences, 2023 Combertum indicum has two varieties, namely varr.M and Varr.B., so to maintain the truth of the sample it is necessary to discriminate. The way to distinguish these two varieties can use the UV-vis spectrophotometric approach.
Hadi Samsul +2 more
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Indonesian Journal of Educational Research and Technology, 2022 UV-VIS spectrophotometry is one of the methods used to perform qualitative and quantitative analysis of organic and inorganic compounds. However, until now there has been no further research that studies and describes the detailed analysis of UV-VIS ...
Restiani Alia Pratiwi +1 more
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Kovalen: Jurnal Riset Kimia, 2022 Boron analysis by UV-Vis spectrophotometry has been developed through distilling triethoxy borane into the curcumin solution. In the distillation of ester borane, an esterification reaction occurs between borate and ethanol.
Isna Lailatusholihah +3 more
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Validation of UV-Vis spectrophotometry methode for analysis of apigenin in celery extract (Apium graveolens L.) [PDF]
Pharmaciana, 2017 Apigenin is one of the flavonoid compounds contained in celery (Apium graveolens L.) and has been used for the treatment of various diseases. This study aims were to ensure the validity and accuracy of analytical method for apigenin assay in celery ...
Asep Nurrahman Yulianto +3 more
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