The purpose of refining sunflower oil is to convert the crude oil, which has a high acidity level and/or organoleptic defects, to make it suitable for human consumption. The refining is also aimed at removing contaminants as pesticides and process solvents.
What are the by-products of refining soybean oil?
Refining of soybean oil, to make a neutral, bland-flavored, and light-colored oil, results in several by-products. The by-products consist of various mixtures of phosphatides, unsaponifiables, glycerides, free fatty acids, and soap. Lecithin contains mostly hydratable phosphatides, together with some free fatty acids and neutral oil (glycerides).
What is the average reduction in sunflower seed oil during refining process?
Total average reduction for sunflower seed oil samples during refining process was 32.9%. The level was about 13.8 mg/100 g in crude sunflower oil and about 9.2 mg/100 g in refined sunflower oil. Losses (%) of minor components during each step pf the refining process.
Why is refining important?
In general, refining is a necessary process to ensure the quality of edible oils. It is very important to remove unnecessary components while retaining the important components of the oils. However, the refining process may cause oxidation of the oils and produce unfavourable degradation products, which may affect the quality of the oils.
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