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Physical refining was utilized as early as 1930 as a process for the preneutralization of products with a high initial FFA content. In this case, preneutralization was followed by caustic refining. Later, it was found possible to physically refine lauric oils and tallow if the proper pretreatment was applied before steam distillation. Physical refining became … Continue reading
Crude oil contains desirable and undesirable compounds. Desirable compounds include triacylglycerides (TAGs) (neutral lipids) and health beneficial compounds such as tocopherols and phytosterols. Undesirable compounds or impurities consist of non-triacylglycerol components such as free fatty acids (FFA), partial acylglycerols, phosphatides, metallic compounds, pigments, oxidation products, pesticides, glycolipids, hydrocarbons, sterols, waxes, etc. Impurities can negatively influence … Continue reading
Oil Palm Knowledge Base 