paraffin
Paraffin is not nutritive and is indigestible; it passes through the digestive system essentially unchanged. It is considered safe in small incidental quantities on food surfaces, though modern food safety protocols minimize its use.
About
Paraffin, also known as paraffin wax, is a colorless, odorless, tasteless hydrocarbon wax derived from petroleum refining. It is a mixture of straight-chain alkane hydrocarbons with carbon numbers primarily between C₂₀ and C₄₀. The substance exists as a crystalline solid at room temperature and melts at approximately 47–65°C (117–149°F) depending on grade and purity. Paraffin is classified into two main types: fully refined paraffin (used in food applications) and technical-grade paraffin (used in non-food applications). In culinary contexts, food-grade paraffin is the only variant acceptable for human consumption and must meet strict purity and safety standards set by food regulatory bodies.
Culinary Uses
Food-grade paraffin wax has limited but specific culinary applications. Historically, it was used as a sealant for jams, jellies, and preserves to create an airtight barrier that extended shelf life by preventing mold and bacterial contamination. It serves as a coating for certain cheeses to preserve moisture and protect from contamination during aging and storage. In confectionery, paraffin may be used as a glazing agent on chocolates and sweets to provide shine and protect against oxidation. Modern food safety practices have largely superseded paraffin with safer alternatives, though it remains approved for certain applications where direct food contact is avoided or where residual contact is considered negligible and non-toxic.