FAQ / Häufig gestellte Fragen
How do I recognize rancid olive oil?
Rancid oil has a musty, stale odor and a severely unpleasant taste. Scent and taste intensify when heated.
Why does olive oil go rancid?
Oil goes rancid when the unsaturated fatty acids react (oxidize) with the oxygen in the air. This creates degradation products such as peroxides, alcohols, aldehydes and carboxylic acids, which affect the taste and smell. Light and heat accelerate the process.
How else can rancid olive oil be used?
Rancid oil should no longer be consumed. However, it can be used in the home for the care of wood products as well as leather care.
What is the correct way to dispose of rancid olive oil?
You can dispose of small amounts of oil in a closed container or soaked up in cat litter in the residual waste. Dispose of large quantities at the local waste disposal facility. Since cold oil can collect in pipes, it should never be disposed of through the sewage system.
Which criteria protect against rancid oil when buying?
When buying oil, there is no surefire protection against rancidity. However, good oil can be tested by smell and taste. If this is not possible then there should be confidence that the oil has been stored in a cool, dark place and has not been exposed to temperatures in excess of 22°C for an extended period of time. Oils with a high content of polyphenols (over 250 mg/kg) are also more stable and rarely go rancid. If you accidentally bought rancid oil, this is a reason for an exchange.