Posted: 2008-06-16 13:20
Do read your labels of castor oil as well as you read your food labels?
Palma Christi l'Originelle and Palma Christi Gold are certified as cold pressed and hexane free.
Other grades of castor oil do not make these claims.
Understand the difference:
Cold Pressed vs Expeller Pressed
All cold pressed oils are expeller pressed. But all expeller pressed oils are not necessarily cold pressed. It all has to do with temperature.
What is Expeller Pressing?
Expeller pressing is a chemical-free mechanical process that extracts oil from seeds and nuts. This method of oil extraction is an alternative to the hexane-extraction method used for many conventional oils. The temperature reached during pressing depends on the hardness of the nut or seed. The harder the nut or seed, the more pressure required to extract the oil, which in turn creates more friction and higher heat. There is no external heat applied during the expeller pressing
Why Cold Press?
Delicate oils, or those in which flavor nuances are a key component, need to be treated with greater care in controlling processing factors. Oils that are cold pressed are expeller pressed in a heat-controlled environment to keep temperatures below 120 degrees F.
It’s important to note that, while Europe has rigorous standards in place for the terminology of cold pressing (fully unrefined oil extracted at temperatures below 122 degrees F), the phrase ‘cold pressed’ has been used erroneously in the U.S. for a number of years, often employed as a marketing technique for oils which have been expeller pressed or even refined (which exposes the oil to temperatures of up to 470 degrees F).




