When it comes to extracting oil from seeds or nuts, there are two main methods used in the industry: cold pressed oil extraction and solvent based oil extraction. Both methods have their own set of advantages and disadvantages, but what exactly is the difference between the two?
What is Cold Pressed Oil Extraction?
Cold pressed oil extraction is a method that involves crushing the seeds or nuts and forcing out the oil through pressure. This process is done at low temperatures, usually below 120 degrees Fahrenheit, to preserve the natural flavor and nutritional value of the oil. The oil is extracted without the use of heat or chemicals, making it a more natural and pure form of oil.
What is Solvent Based Oil Extraction?
Solvent based oil extraction, on the other hand, involves using chemical solvents such as hexane to extract the oil from the seeds or nuts. The solvent is mixed with the crushed seeds to dissolve the oil, which is then separated from the solvent. The oil is then heated to evaporate the solvent, leaving behind the extracted oil.
Key Differences
One of the main differences between cold pressed oil extraction and solvent based oil extraction is the use of heat and chemicals. Cold pressed oil extraction retains more of the natural nutrients and antioxidants present in the seeds or nuts, while solvent based extraction may alter the chemical composition of the oil due to the use of heat and chemicals.
Additionally, cold pressed oil extraction is considered a more environmentally friendly method as it does not involve the use of chemical solvents that can be harmful to the environment. It also produces less waste compared to solvent based extraction.
Conclusion
In conclusion, the main difference between cold pressed oil extraction and solvent based oil extraction lies in the methods used to extract the oil. Cold pressed oil extraction is a more natural and pure method that preserves the nutritional value of the oil, while solvent based extraction may alter the chemical composition of the oil. When choosing between the two, it is important to consider the quality and purity of the oil, as well as the environmental impact of the extraction method.