Petunidin-3-O-glucoside

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Petunidin-3-O-glucoside is an anthocyanin, a type of flavonoid pigment found in various plants. It is a glycoside derivative of petunidin, where the anthocyanidin petunidin is bonded to a glucose molecule. This compound is responsible for the red, purple, and blue colors in many fruits and flowers.

Chemical Structure

Petunidin-3-O-glucoside consists of the anthocyanidin petunidin attached to a glucose molecule at the third carbon position. The chemical formula for petunidin-3-O-glucoside is C₂₂H₂₃O₁₁.

Natural Occurrence

Petunidin-3-O-glucoside is found in various fruits and flowers, contributing to their vibrant colors. It is commonly present in:

• Grapes
• Blueberries
• Plums
• Chokeberries
• Petunias

Biological Role

As an anthocyanin, petunidin-3-O-glucoside plays a significant role in plant physiology. It helps in attracting pollinators and seed dispersers due to its vivid coloration. Additionally, it provides protection against various environmental stresses, including UV radiation and pathogen attacks.

Health Benefits

Petunidin-3-O-glucoside, like other anthocyanins, is known for its potential health benefits. It exhibits antioxidant properties, which can help in reducing oxidative stress and inflammation. Studies suggest that anthocyanins may contribute to cardiovascular health, improved vision, and reduced risk of certain chronic diseases.

Extraction and Analysis

The extraction of petunidin-3-O-glucoside from plant materials typically involves solvent extraction methods followed by chromatographic techniques for purification. High-performance liquid chromatography (HPLC) is commonly used for the analysis and quantification of this compound in various samples.

Related Compounds

Petunidin-3-O-glucoside is part of a larger group of anthocyanins, which include:

• Cyanidin-3-O-glucoside
• Delphinidin-3-O-glucoside
• Malvidin-3-O-glucoside
• Peonidin-3-O-glucoside

See Also

• Anthocyanin
• Flavonoid
• Glycoside
• Petunidin