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Solid-phase colorimetric method for the quantification of fucoidan
Jung Min Lee1, Z-U Shin, Gafurjon T Mavlonov
1Graduate School of Biotechnology, Kyung Hee University, Yongin, Republic of Korea.
Applied Biochemistry and Biotechnology
|August 21, 2012
Summary
A new method quantifies fucoidans using methylene blue staining on filter paper. This simple, selective assay accurately measures fucoidan levels, even with interfering substances present.
Area of Science:
- Biochemistry
- Analytical Chemistry
- Marine Biology
Background:
- Fucoidans are sulfated polysaccharides with diverse biological activities.
- Accurate quantification of fucoidans is crucial for research and applications.
- Existing methods may lack selectivity or simplicity.
Purpose of the Study:
- To develop a simple, selective, and rapid method for fucoidan determination.
- To establish a solid-phase assay for quantifying fucoidans.
- To explore an alternative image-processing based quantification approach.
Main Methods:
- Immobilization of sulfated polysaccharides (fucoidans) onto filter paper.
- Staining with methylene blue dye.
- Measurement of eluted dye's optical density at 663 nm.
- Alternative quantification using image processing software.
Main Results:
- The method selectively determines 1-20 μg of fucoidan.
- The assay is effective in the presence of alginic acid, DNA, salts, proteins, and detergents.
- Image processing offers a dye-extraction-free quantification option.
Conclusions:
- A simple, selective, and rapid solid-phase method for fucoidan determination has been established.
- This method is robust and suitable for various sample matrices.
- The developed technique provides a valuable tool for fucoidan analysis in scientific research.
