Diacetyl: occurrence, analysis, and toxicity.

Area of Science:

• Food Science
• Analytical Chemistry
• Toxicology

Background:

• Diacetyl provides a butter-like flavor and is a common food additive.
• Its formation occurs through bacterial or heat processing of sugars and lipids in foods and beverages.
• Inhaled diacetyl toxicity has raised concerns among consumers and regulatory bodies.

Purpose of the Study:

• To review the formation mechanisms, analytical methods, occurrence, and toxicity of diacetyl.
• To highlight the challenges in accurately quantifying diacetyl in various matrices.
• To summarize common analytical techniques for diacetyl detection.

Main Methods:

• Literature review of diacetyl formation, analysis, and toxicity.
• Focus on the preparation of 2,3-dimethylquinoxaline followed by gas chromatography (GC) as a primary analytical method.
• Discussion of diacetyl's reactivity and solubility challenges in quantitative analysis.

Main Results:

• Diacetyl is formed via diverse biological and thermal pathways in food production.
• Accurate quantification of diacetyl is challenging due to its chemical properties.
• Gas chromatography after derivatization is a widely adopted method for diacetyl measurement.

Conclusions:

• Understanding diacetyl's formation and toxicity is crucial for food safety.
• Advanced analytical methods are necessary for precise diacetyl quantification.
• Regulatory attention underscores the importance of monitoring diacetyl in food and air.