Access the UV-Vis Spectrum SIELC Library

UV-Vis Spectrum of Glutathione Reduced. Absorption starts high at 190 nm but quickly falls off and bottoms out around 245 nm.

If you are looking for optimized HPLC method to analyze Glutathione check our HPLC Applications library

For optimal results in HPLC analysis, it is recommended to measure absorbance at a wavelength that matches the absorption maximum of the compound(s) being analyzed. The UV spectrum shown can assist in selecting an appropriate wavelength for your analysis. Please note that certain mobile phases and buffers may block wavelengths below 230 nm, rendering absorbance measurement at these wavelengths ineffective. If detection below 230 nm is required, it is recommended to use acetonitrile and water as low UV-transparent mobile phases, with phosphoric acid and its salts, sulfuric acid, and TFA as buffers.

HPLC Method for Analysis of Glutathione on Primesep 100 by SIELC Technologies

L-Glutathione, also known as reduced glutathione or simply GSH, is a tripeptide made up of three amino acids: L-glutamic acid, L-cysteine, and glycine. It has the chemical formula C₁₀H₁₇N₃O₆S.

Glutathione is found in nearly all cells, and in its reduced form (GSH), it is a powerful antioxidant. It plays a crucial role in protecting cells against oxidative stress by neutralizing reactive oxygen species such as free radicals and peroxides.

The unique aspect of glutathione is the cysteine thiol group (SH) which acts as a reducing agent and can be reversibly oxidized and reduced. In cells, glutathione is maintained in the reduced form by the enzyme glutathione reductase, which reduces the disulfide form of the molecule (GSSG, glutathione disulfide) back to GSH.

Apart from being an antioxidant, glutathione also plays other important roles including detoxification, immune system support, protein function regulation, and as a cofactor for various enzymes. Its deficiency can lead to cellular stress and dysfunction, underscoring its vital role in maintaining cellular health.

In supplement form, L-Glutathione is often used with the intent to support antioxidant activity in the body. However, it is important to consult with a healthcare provider before starting any new supplement regimen.

Glutathione can be retained and analyzed using a reverse-phase Primesep 100 column. The mobile phase for this method consists of water, acetonitrile (MeCN), and sulfuric acid, which serves as a buffer. This analytical method can be monitored using UV detection at 200 nm.

LOD was determined for this combination of instrument, method, and analyte, and it can vary from one laboratory to another even when the same general type of analysis is being performed.

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HPLC Method for Separation of Cysteine, Glutathione, reduced, Cystine, Cysteine-glutathione disulfide, Glutathione oxidized on Primesep 100 by SIELC Technologies

These compounds are all involved in redox reactions and cellular defenses against oxidative stress in biological systems. Here’s a bit more about each of them:

Cysteine is an amino acid with the chemical formula C₅H₁₀N₂O₃. It is primarily a building block for protein, but it also has antioxidant effects. On occasion, it is used to support people dealing with cancer, diabetes, and hangover, but there is yet to be substantial evidence that it works. Poultry, egg, beef, and whole grains are rich sources of the amino acid. This is a sulfur-containing amino acid that’s used in the biosynthesis of proteins. Its thiol side chain often participates in enzymatic reactions, and contributes to the stability of proteins by forming disulfide bonds. You can find detailed UV spectra of Cysteine and information about its various lambda maxima by visiting the following link.

Glutathione, reduced (GSH) is a tripeptide (small protein) consisting of the amino acids glutamic acid, cysteine, and glycine. It has the chemical formula C₁₀H₁₇N₃O₆S. GSH serves as an antioxidant, helping to prevent damage to cellular components caused by reactive oxygen species such as free radicals and peroxides. In fact, it is the most prevalent endogenous antioxidant, protecting cells from damage by neutralizing harmful free radicals and reactive oxygen species. It also regenerates other antioxidants, like vitamins C and E, from their oxidized forms. It contributes to the neutralization of many different types of harmful substances, such as pollutants, heavy metals, and some drugs, thereby aiding in the detoxification process. Not only that, it plays a crucial role in the proper function of white blood cells, including T cell lymphocytes—the foundation of adaptive immunity. Low levels of glutathione have been linked to several diseases, including cancer, neurodegenerative disorders such as Parkinson’s disease, cardiovascular diseases, and HIV/AIDS. Additionally, glutathione levels typically decrease with age, which can contribute to the aging process. Glutathione is primarily synthesized in the liver and then distributed to other tissues in the body. It can also be obtained from some foods, especially fruits, vegetables, and meats. You can find detailed UV spectra of Glutathione and information about its various lambda maxima by visiting the following link.

Cystine is an amino acid with the molecular formula C₆H₁₂N₂O₄S₂. It plays a crucial role in various biological processes due to its ability to stabilize protein three-dimensional structures. It is a covalently bonded dimer molecule of two cysteine molecules, connected through a disulfide bond. Disulfide bonds between cysteine residues in peptide chains contribute to the 3D structure of proteins. In dietary supplements and food labeling, this compound is often referred to as a conditionally essential amino acid. It serves as a major precursor for the synthesis of glutathione. UV spectra of Cystine and information about its various lambda maxima by visiting the following link.

Cysteine-glutathione disulfide (CySSG) is a mixed disulfide with the chemical formula C₁₃H₂₂N₄O₈S₂. It is formed by the reaction of glutathione with the oxidized form of cysteine (cystine). It is one of the forms in which cysteine is stored and transported in plasma. UV spectra of Cysteine-glutathione disulfide and information about its various lambda maxima by visiting the following link.

Oxidized glutathione, or glutathione disulfide (GSSG), is a form of the antioxidant molecule glutathione with the chemical formula C₂₀H₃₂N₆O₁₂S₂. Glutathione exists in two forms: the reduced form (GSH), which is the active antioxidant, and the oxidized form (GSSG). When glutathione neutralizes a free radical or a reactive oxygen species, it becomes oxidized and forms GSSG. The ratio of GSH to GSSG within cells is often used as a measure of cellular oxidative stress. The body can convert GSSG back into the active GSH form using an enzyme called glutathione reductase, provided there are adequate levels of NADPH, a compound integral to many cellular processes, including the antioxidant response.

Overall, these molecules play vital roles in the body’s antioxidant defenses, detoxification of xenobiotics, modulation of redox-controlled signaling pathways, and regulation of cellular proliferation and apoptosis.

Cysteine, Cystine, Cysteine-glutathione disulfide, Glutathione, Glutathione oxidized (GSSG) can be retained, separated, and analyzed using a reverse-phase Primesep 100 column. The mobile phase for this method consists of water, acetonitrile (MeCN), and Sulfuric acid, which serves as a buffer.

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HPLC Method for Separation of Glutathione on Primesep 100 by SIELC Technologies

High Performance Liquid Chromatography (HPLC) Method for Analysis of Glutathione.

Glutathione is a tripeptide composed of three amino acids: glutamate, cysteine, and glycine. It’s often referred to as the body’s “master antioxidant” because of its vital role in maintaining cellular health and preventing oxidative stress.

Here are some key functions and characteristics of glutathione:

1. Antioxidant Function: Glutathione is the most prevalent endogenous antioxidant, protecting cells from damage by neutralizing harmful free radicals and reactive oxygen species. It also regenerates other antioxidants, like vitamins C and E, from their oxidized forms.
2. Detoxification: Glutathione contributes to the neutralization of many different types of harmful substances, such as pollutants, heavy metals, and some drugs, thereby aiding in the detoxification process.
3. Immune System Support: It plays a crucial role in the proper function of white blood cells, including T cell lymphocytes—the foundation of adaptive immunity.
4. Health and Disease: Low levels of glutathione have been linked to several diseases, including cancer, neurodegenerative disorders such as Parkinson’s disease, cardiovascular diseases, and HIV/AIDS. Additionally, glutathione levels typically decrease with age, which can contribute to the aging process.

Glutathione is primarily synthesized in the liver and then distributed to other tissues in the body. It can also be obtained from some foods, especially fruits, vegetables, and meats.

Glutathione can be retained on Primesep 100 mixed-mode column using a mobile phase of Acetonitrile (ACN), water and Trifluoroacetic acid  (TFA) buffer.  This analysis method can be detected via Refraction Index (RI) Detection, mass spectrometry (MS), evaporative light scattering detection (ELSD) and Charged aerosol detection (CAD).

High Performance Liquid Chromatography (HPLC) Method for Analysis of Glutathione