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Minor constituents of palm oil

  • Technical
  • Published:
Journal of the American Oil Chemists’ Society

Abstract

Crude palm oil contains about 1% of minor components including carotenoids, tocopherols, sterols, triterpene alcohols, phospholipids, glycolipids and terpenic and paraffinic hydrocarbons. The nutritionally important components such as carotenes and tocopherols also improve stability of the oil. Although a highly valued product, carotene unfortunately is bleached or destroyed in refining because suitable recovery technology is not available. Thermal degradation of carotene, previously suspected of giving rise to undesirable chemicals, now is known to furnish mainly harmless hydrocarbons, most of which are removed by the deodorization step in refining. Tocopherols, being natural antioxidants, need to be carefully preserved during milling, refining, fractionation and modification of palm oils. The accumulation of tocopherols in the palm fatty acid distillate promises to provide a new source for the recovery of this valuable substance. The role played by phospholipids is frequently misunderstood because they can act in two ways, i.e. as an antioxidant synergist and a surface active agent to disperse impurities in oil. In crude palm oil the phospholipid content is small, because most of it is removed during milling; the phosphorus content is due mainly to inorganic phosphorus. Among the sterols, cholesterol constitutes too small a percentage to be of much concern. Sterols, triterpenoids and terpenoid hydrocarbons are also potentially useful side products should recovery technology become available. Other newly characterized minor and trace components also are discussed.

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Authors and Affiliations

  1. Chemistry Department, University of Malaya, Kuala Lumpur, Malaysia

    S. H. Goh

  2. Palm Oil Research Institute of Malaysia, Kuala Lumpur, Malaysia

    Y. M. Choo & S. H. Ong

Authors
  1. S. H. Goh
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  2. Y. M. Choo
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  3. S. H. Ong
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Goh, S.H., Choo, Y.M. & Ong, S.H. Minor constituents of palm oil. J Am Oil Chem Soc 62, 237–240 (1985). https://doi.org/10.1007/BF02541384

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