• 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).
  • Should you buy crude degummed soybean oil for refining?
  • Buyers of crude degummed soybean oil for refining soybean oil should consider the compositional differences between oil derived from soybeans of different origins. The oil composition can significantly impact the refining process in terms of refined oil yields and refining costs.
  • What should be considered when buying soybean oil?
  • Soybean oil compositional differences should be considered when making purchasing decisions based on soybean oil (or whole soybean) origin. Buyers of crude degummed soybean oil for refining soybean oil should consider the compositional differences between oil derived from soybeans of different origins.
  • Why does soybean oil quality vary by origin?
  • Soybean oil quality varies by origin. These variations are due to the geographic location where the whole soybeans were grown, storage conditions and handling prior to processing. Variations in the quality of CDSBO can lead to a longer, more costly refining process, while simultaneously lowering refining yields.
  • What percentage of soybean oil is recovered by water degumming?
  • The amount recovered by water degumming varies depending upon the oil quality but will usually be 2.5 to 3.0% of the crude soybean oil degummed. Lecithin processing and utilization are covered in detail in Chapter 10. Soapstock, or refining byproduct lipids, consists of soap, neutral oil, phosphatides, and some unsaponifiables.
  • 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)