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Analysis of Interaction between Diosmetin and serum albumin by UV-Vis Spectroscopy (CAT#: STEM-MB-0934-WXH)

Introduction

Diosmetin is an O-methylated flavone and the aglycone part of the flavonoid glycosides diosmin that occurs naturally in citrus fruits. Pharmacologically, diosmetin is reported to exhibit anticancer, antimicrobial, antioxidant, oestrogenic and anti-inflamatory activities. It also acts as a weak TrkB receptor agonist.
Serum albumins (SAs), the most abundant proteins in blood plasma, play important roles in the transport and deposition of a variety of endogenous and exogenous substances including fatty acids, amino acids, metals, and pharmaceuticals in blood. The binding of toxins to serum albumins may have physiological importance, because they controls their free, active concentrations and affect the duration and intensity of their effects.




Principle

UV-Vis spectroscopy is an analytical technique that measures the amount of discrete wavelengths of UV or visible light that are absorbed by or transmitted through a sample in comparison to a reference or blank sample. This property is influenced by the sample composition, potentially providing information on what is in the sample and at what concentration. The only requirement is that the sample absorb in the UV-Vis region, i.e. be a chromophore. Absorption spectroscopy is complementary to fluorescence spectroscopy. Parameters of interest, besides the wavelength of measurement, are absorbance (A) or transmittance (%T) or reflectance (%R), and its change with time.

Applications

UV/Vis spectroscopy is routinely used in analytical chemistry for the quantitative determination of diverse analytes or sample, such as transition metal ions, highly conjugated organic compounds, and biological macromolecules. Spectroscopic analysis is commonly carried out in solutions but solids and gases may also be studied.

Procedure

1. Calibrate the Spectrometer
2. Perform an Absorbance Spectrum
3. Kinetics Experiments with UV-Vis Spectroscopy

Materials

UV/VIS Spectrophotometer
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