Fatty-Acid Compositions and Stability Of Cold-Pressed Oils
Cold-pressed edible oils are products extracted from certain raw materials through cold pressing at the temperature of up to 50 °C. Fatty acids are an important component of human diet, serving as both a source of energy and a component of cell material. Phospholipids, which make up cell membranes, include fatty acids. Linoleic and a-linolenic acid are two important fatty acids found in most vegetable oils. Oils also contain antioxidants, vitamin E, carotenoids, and phenolic acids, among other things. Because of the existence of bioactive ingredients, these oils have been referred to as functional nutrition. Essential fatty acids, sterols, and tocopherols, which are found in oils in nutrition, have a strong protective impact against cardiovascular disease, cancer, obesity, and other diseases.
Fig.1. Characteristics and Antioxidant Potential of Cold pressed oils (MDPI.com)
The research was conducted using cold-pressed edible non-refined vegetable oils produced from hull-less pumpkin, standard linoleic type of sunflower, and linseed seeds. At the various locations, adequate agrotechnical procedures for the cultivation of various oil seeds have been taken. The pumpkin was picked when it was fully mature, when the oil content in the seeds was between 40 and 50 percent. In order to avoid damage, the fruits were hand-picked. Harvesting of sunflower and linseeds was done mechanically after they reached full technological maturity, when the sunflower seed oil content was between 40 and 58 percent and the linseed oil content was between 35 and 47 percent. Cold pressing procedures were used to extract six samples of pumpkin seed, sunflower seed, and linseed oil for analysis. All the cold-pressed oil samples were kept in the original packaging and adequately stored up until the moment of testing.
Reference:
https://www.researchgate.net/publication/339014523_Fatty_Acid_Composition_and_Stability_of_Cold-Pressed_Vegetable_Oils