Glycerol Assay
Glycerol Assay - Related Videos
02:35
Long-Term Cryopreservation of Cyanobacterial Strains Using Glycerol or Dimethyl Sulfoxide
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2025
Source: Lea-Smith, D. J., et al. Generation of Marked and Markerless Mutants in Model Cyanobacterial Species. J. Vis. Exp. (2016)This video demonstrates the cryopreservation of cyanobacterial strains by combining concentrated cell suspensions with glycerol or DMSO and storing them at low temperatures, enabling long-term maintenance of viable cultures for photosynthesis and genetic studies.
13:02
Archimedes-Based Glycerol Displacement for Electrode Porosity Measurement in Lead-Acid Batteries
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2026
Here, we present a simple and low-cost glycerol displacement method based on Archimedes' principle for measuring lead-acid battery electrode porosities. The method demonstrates good reproducibility and is safer than traditional techniques, requiring low-hazard chemicals and equipment. Combining the technique with microstructural analysis by X-ray diffraction provides information on battery electrode properties and degradation.
08:03
Electrospun Fibrous Scaffolds of Poly(glycerol-dodecanedioate) for Engineering Neural Tissues From Mouse Embryonic Stem Cells
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Cited by 9 •
2014
Synthesis and fabrication of electrospun long fibers spanning a larger deposit area via a newly designed collector from a novel biodegradable polymer named poly(glycerol-dodecanoate) (PGD) was reported. The fibers were able to support the growth of cells derived from mouse pluripotent stem cells.
02:48
Examine Chemoavoidance Behavior in Transgenic Worms Using Osmotic Avoidance Assay
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2025
This video describes an osmotic avoidance assay to examine chemoavoidance behavior in a transgenic worm model. Avoidance behavior is tested in a plate in the presence of a high-osmotic barrier and chemoattractant. The worms with a functional loss of neurons get attracted by the chemoattractant, cross the high-osmotic barrier, and become paralyzed in the trap zone because of the anesthetic solution.
08:12
The TUNEL Assay
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2023
One of the hallmarks of apoptosis is the nuclear DNA fragmentation by nucleases. These enzymes are activated by caspases, the family of proteins that execute the cell death program. TUNEL assay is a method that takes advantage of this feature to detect apoptotic cells. In this assay, an enzyme called terminal deoxynucleotidyl transferase catalyzes the addition of dUTP nucleotides to the free 3’ ends of fragmented DNA. By using dUTPs that are labeled with chemical tags that can produce...
FAQs
The reaction sequence converts glycerol first into glycerol-3-phosphate through glycerol kinase activity. A subsequent oxidation step is coupled to production of a measurable colorimetric or fluorescent signal. Because signal intensity corresponds to glycerol present, measuring that output provides an indirect but quantitative readout of glycerol concentration in the original sample.
Glycerol kinase initiates the assay pathway by phosphorylating glycerol to form glycerol-3-phosphate. This transformation places glycerol into the coupled reaction sequence that ultimately generates the detectable signal. Its role connects the amount of starting glycerol with the downstream optical response, allowing the assay to quantify glycerol through enzymatic conversion rather than direct observation.
The measured color or fluorescence represents the signal produced after glycerol enters the coupled enzymatic reactions. Within the assay, a stronger signal corresponds to more glycerol in the sample, whereas a weaker signal corresponds to less. This relationship enables concentration measurements and supports comparisons among biological, food-related, or reaction-mixture samples.
Suitable sample categories include blood, cell extracts, food products, and reaction mixtures. These materials represent different research and quality-control contexts, but the assay uses the same underlying measurement principle: glycerol is processed enzymatically and the resulting signal is measured. The broad sample range makes the method useful for both biochemical investigations and assessment of food-related materials.
Glycerol measurement helps researchers evaluate free glycerol separately from glycerol released during triglyceride analysis. This distinction matters because the measured glycerol may reflect either glycerol already present in a sample or glycerol generated when triglycerides break down. Keeping these sources conceptually separate improves interpretation of lipid measurements and related biochemical results.
In biochemistry, glycerol assays support studies of triglyceride breakdown, lipolysis, lipid metabolism, and enzyme activity. Measuring glycerol can therefore provide evidence about how lipid-related reactions proceed or how enzyme activity changes under investigation. The same approach also supports quality control in food-related samples, extending its use beyond cellular and metabolic research.