Analysis of fermentation process of Pichia pastoris by UV-Vis Spectroscopy (CAT#: STEM-MB-0873-WXH)

Introduction

Pichia pastoris is a species of methylotrophic yeast. It was found in the 1960s, with its feature of using methanol as a source of carbon and energy. After years of study, P. pastoris was widely used in biochemical research and biotech industries. With strong potential for being an expression system for protein production, as well as being a model organism for genetic study, P. pastoris has become important for biological research and biotech applications.
UV-Vis spectroscopy was able to quantify protein contents in the supernatants from a fermentation process of Pichia pastoris.

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Principle Applications Procedure Materials Notes Related Products

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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