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A Simple and Rapid Protocol for Measuring Neutral Lipids in Algal Cells Using Fluorescence

A Simple and Rapid Protocol for Measuring Neutral Lipids in Algal Cells Using Fluorescence

Published on: May 30, 2014

Rapid quantitative analysis of lipids using a colorimetric method in a microplate format.

Yu-Shen Cheng¹, Yi Zheng, Jean S VanderGheynst

¹Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, USA.

|November 12, 2010

Summary

A new colorimetric sulfo-phospho-vanillin (SPV) method offers high-throughput total lipid analysis in microplates. This accurate and consistent assay simplifies lipid measurement across diverse sources, matching gravimetric results.

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Area of Science:

Biochemistry
Analytical Chemistry

Background:

Accurate total lipid quantification is crucial for various biological and industrial applications.
Existing lipid measurement methods can be time-consuming, involve hazardous reagents, or lack consistency.

Purpose of the Study:

To develop and validate a novel, high-throughput colorimetric method for total lipid analysis.
To offer an improved assay with enhanced accuracy, consistency, and safety compared to existing techniques.

Main Methods:

A colorimetric sulfo-phospho-vanillin (SPV) assay was optimized and adapted for a 96-well microplate format.
The SPV method was validated by comparing its lipid determination results against a standard macro-gravimetric method.

Main Results:

The developed SPV assay demonstrated high throughput and consistent color development for accurate absorbance measurements.
Background absorbance correction was simplified within each well, reducing handling risks associated with sulfuric acid.
Lipid content in microalgae extracts measured by the SPV method showed no significant difference compared to the macro-gravimetric method.

Conclusions:

The colorimetric sulfo-phospho-vanillin (SPV) method provides a robust, safe, and efficient high-throughput alternative for total lipid quantification.
This assay is suitable for analyzing lipids from diverse sources and offers comparable accuracy to traditional gravimetric approaches.