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).
Does soybean distillate have -tocopherol?
Although distillate from other oils may have higher levels of ¦Á-tocopherol, the larger volume of soybean oil processed makes soybean distillate an important source of natural vitamin E. TABLE 17.5. Deodorizer Distillate from Different Oils ( 3)
How does edible oil refining reduce production costs?
In edible oil refining, the continuous effort to reduce overall production costs is mainly achieved by increasing plant capacities, installation of mono feedstock plants, and increasing the degree of automation. Over the years, more energy-efficient processes and technologies, resulting in a higher refined oil yield, have gradually been introduced.
How is soybean oil made?
Shijing, the Book of Odes, contains several poems mentioning soybeans. [ 4] To produce soybean oil, the soybeans are cracked, adjusted for moisture content, heated to between 60 and 88 °C (140 and 190 °F), rolled into flakes, and solvent-extracted with hexanes. The oil is then refined, blended for different applications, and sometimes hydrogenated.
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