Minor constituents of palm oil View Full Text


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Article Info

DATE

1985-02

AUTHORS

S. H. Goh, Y. M. Choo, S. H. Ong

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. More... »

PAGES

237-240

References to SciGraph publications

  • 1973-04. Sterol composition of 19 vegetable oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1983-02. Palm oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1983-02. Detection of adulteration in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1973-08. Methylsterol compositions of 19 vegetable oils in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1982-07. Phospholipids of palm oil (Elaeis guineensis) in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
  • 1981-10. Colored components of processed palm oil in JOURNAL OF THE AMERICAN OIL CHEMISTS' SOCIETY
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    http://scigraph.springernature.com/pub.10.1007/bf02541384

    DOI

    http://dx.doi.org/10.1007/bf02541384

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