Using Uruguayan pillared clays for bleaching corn oil.

Authors

  • T. Pagano Facultad de Química, Montevideo
  • M. Sergio Facultad de Química, Montevideo
  • A. Montenegro Facultad de Química, Montevideo
  • W. Diano Facultad de Química, Montevideo
  • M. A. Grompone Facultad de Química, Montevideo

DOI:

https://doi.org/10.3989/gya.1998.v49.i1.708

Keywords:

Bleaching, Corn oil, Montmorillonite, Pillared clays – Uruguay

Abstract


In the present paper adsorptive capacity to remove carotenes from a com oil by an Uruguayan montmorillonite modified by different treatments: exchange with Na+ ions (M-Na), acid-activation (Act), exchange with Ca2+ and pillaring with Keggin ions (Pile-Act), acid-activation and pillaring (Act Pil-Ca), is studied. Bleaching action of the Uruguayan modified montmorillonites is compared with two commercial days: Tonsil Optimum (Süd-Chemie) and montmorillonite of type K 10 (Aldrich). Our results demonstrate that Act and Pilc-Ca samples are so efficient bleaching clays as commercials but M-Na sample Is lower. Also, mixtures of Pilc-Ca with commercial clays, added together in one step or consecutively in two steps, are studied. These procedures do not improved the bleaching action. As conclusion, the modified clay Pilc-Ca allows to bleach a neutralized and degummed corn oil, giving an end product similar to edible commercial oils. Such effect is improved with the simultaneous action with activated clays.

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Published

1998-02-28

How to Cite

1.
Pagano T, Sergio M, Montenegro A, Diano W, Grompone MA. Using Uruguayan pillared clays for bleaching corn oil. grasasaceites [Internet]. 1998Feb.28 [cited 2021Jun.25];49(1):50-4. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/708

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Section

Research