(GPC)凝胶色谱法清洁食用油中的塑料添加剂

Plastics are ubiquitous in our society and are extensively used in a large variety of
packaged foods. A variety of chemicals that enhance the physical quality of plastics
are often added as well. Some commonly used additives include plasticizers (such
as phthalates) to improve flexibility, UV filters for protection from sunlight,
brightening agents, coloring agents, and preservatives. Enhanced by a number of
environmental factors, some of these additives may migrate into food products that
have been packaged using plastics. There is currently a great deal of interest in
measuring the migration of these compounds into food products, as considerable
uncertainty exists regarding the human health risks associated with exposure to
such compounds.

Gel permeation chromatography (GPC) is a highly effective method for the removal
of high molecular weight interferences such as lipids from a fatty food prior to
analysis for the compounds of interest. GPC has been used to clean up fatty foods
contaminated with plasticizers and other plastics additives.

This note describes the use of GPC clean‐up
to separate a variety of plastics additives,
such as phthalates, Chimassorb® 81 (a UV
absorber and stabilizer), Irganox® 1076 (an
optical brightener) and Uvitex® OB (an
antioxidant and thermal stabilizer) from a
representative edible oil sample prior to
analysis.