E445 - Glycerol esters of wood rosin

Origin

E445, glycerol esters of wood rosin, is a complex mixture derived from wood rosin, a resinous extract of pine stumps after the extraction of turpentine and other volatile components. The wood rosin is esterified with glycerol to produce a more stable and soluble product. The esterification process involves reacting glycerol with the rosin acids present in wood rosin.

Usage

Glycerol esters of wood rosin are primarily used as a food additive to increase the density of citrus oils in beverages, preventing separation of the oil and providing a cloudy appearance. This is particularly important in citrus-flavored soft drinks. It is also used as a masticatory substance in chewing gum. The typical usage levels are relatively low, sufficient to achieve the desired emulsification and density adjustment.

Side Effects

Glycerol esters of wood rosin are generally considered safe for human consumption at the levels typically used in food products. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established an Acceptable Daily Intake (ADI) of up to 12.5 mg/kg body weight. Studies have shown no significant adverse effects at these levels. However, as with any food additive, some individuals may exhibit sensitivity or allergic reactions, although these are rare. Long-term studies have not revealed any carcinogenic or teratogenic effects. Regulatory bodies like the EFSA and FDA have reviewed the safety data and have approved its use within specified limits.

Regulatory Status

Glycerol esters of wood rosin are approved for use as a food additive in several countries, including the United States and within the European Union. In the EU, it is designated as E445. The FDA includes it in its list of substances affirmed as Generally Recognized As Safe (GRAS) when used in accordance with good manufacturing practices. The regulatory status is continuously monitored and reviewed based on new scientific evidence.