Is olive oil precipitation normal?

Olive oil has a low ignition point and is easy to solidify. When the temperature is relatively low, some white precipitates will appear. It is normal for olive oil to be turbid at low temperature. Because it contains different proportions of wax, it will condense at low temperature. The standards of olive oil in international olive oil council and EU stipulate the wax content of various grades of olive oil.

Different manufacturers, different years/batches of olive oil have different wax content. The wax content of olive oil depends on the olive fruit, and the wax content of olive fruit is influenced by the origin and tree species. Even in the same producing area, the same variety will have different wax content due to the change of climatic conditions every year.

The forgery of extra virgin olive oil can meet the acidity standard of extra virgin olive oil, including wax content, by mixing refined olive oil with ordinary virgin olive oil. It is impossible to distinguish good from bad simply by physical observation. What's more, it makes extra virgin olive oil by mixing refined hazelnut oil with virgin olive oil, making huge profits. General standard physical and chemical detection can no longer distinguish authenticity.

Extended data:

Olive is a famous tree species with a long history in the world. In plant taxonomy, olive belongs to Oleaceae, Oleaceae and small evergreen trees. The Mediterranean coast has the most suitable climatic conditions such as soil and temperature, sunshine, air humidity and precipitation.

Except the Mediterranean coast, other areas can only be planted sporadically in suitable areas. Olive is a long-lived tree, which begins to bear fruit after 4-5 years of planting, and the full fruit period can last for 50 years to 100 years. The fruit is drupe and looks like jujube. Every year from March to June is the time for olive trees to blossom and set fruit, and 7- 10 fruits begin to develop and mature.

The fruit turns from green to red and purple, and finally to black. The fruit picking season is from 10 to10.55438+065438. Due to different varieties, maturity, geographical environment, soil texture and planting methods, the physical characteristics and chemical composition of olive fruit are also different.

References:

Olive oil _ Baidu Encyclopedia