Using Uruguayan pillared clays for bleaching corn oil.

T. Pagano; M. Sergio; A. Montenegro; W. Diano; M. A. Grompone

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

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

Pagano T, Sergio M, Montenegro A, Diano W, Grompone MA. Using Uruguayan pillared clays for bleaching corn oil. Grasas aceites [Internet]. 1998Feb.28 [cited 2025May24];49(1):50-4. Available from: https://grasasyaceites.revistas.csic.es/index.php/grasasyaceites/article/view/708

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Issue

Vol. 49 No. 1 (1998)

Section

Research

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