E640i - Glycin

Origin

Glycine is a non-essential amino acid, meaning the human body can synthesize it. It is the simplest amino acid, with a single hydrogen atom as its side chain. Glycine can be produced synthetically or extracted from protein hydrolysates, such as gelatin. Industrial production often involves chemical synthesis using formaldehyde, ammonia, and hydrogen cyanide or enzymatic methods.

Usage

Glycine is used in the food industry as a flavor enhancer, masking agent, and stabilizer. It can improve the taste of processed foods, especially those with a salty or sweet profile. It is also used as a buffering agent and a component in nutritional supplements and protein drinks. In the pharmaceutical industry, glycine is used in intravenous nutrition and as a component of certain medications. Glycine is also used in animal feed and various industrial applications.

Side Effects

Glycine is generally recognized as safe (GRAS) by regulatory bodies like the FDA. However, excessive intake of glycine may lead to mild gastrointestinal discomfort in some individuals. High doses (above 60g/day) have been associated with nausea. The European Food Safety Authority (EFSA) has not established a specific Acceptable Daily Intake (ADI) for glycine when used as a food additive, indicating a low level of concern at typical usage levels. Individuals with kidney or liver problems should exercise caution when consuming large amounts of glycine.

Regulatory Status

Glycine is permitted as a food additive in many countries, including the United States and the European Union. In the US, it is GRAS. In the EU, it is approved as a flavor enhancer and is assigned the E number E640. The regulatory status is generally considered favorable due to its natural occurrence and low toxicity.