Active sites for adsorption of B-carotene

The adsorption activities of various cation exchanged zeolites were studied to investigate the nature of the active sites for adsorption of beta-carotene. The activities were found to be in the order: Fe (III) NaY more than HNaY much more than MgNaX more or less equal CaNaX more or less equal NaX more or less equal NaY. This study was extended to include various catiosn exchanged bleaching earth. On exchanging the exchangeable cations on Filtrol 105 with Na positive, the activities decreased as the cations were progressively exchanged. Reexchanging the N2 positive on the exchanged Filtrol with H positive, Fe3 positive, Mg2 positive and Ca2 positive restored the activity. The efficiency of the various ions in imparting activity on the bleaching earth is in the order Fe3 positive more than H positive more than Mg2 positive more than Ca2 positive more than Na positive. The adsorption activities of the earth increased linearly with the concentrations of H positive and Fe3 positive on the surface. These results indicate that it is possible to fabricate bleaching earth to a certain desired level of activity for beta-carotene removal by ion-exchange

Bibliographic Details

Main Authors:	123340 Tan, S.H., 82937 Khoo, L.E. Universiti Sains Malaysia, Penang (Malasia), 86657 Liew, K.Y., 96848 Morsingh, F., 107224 Pushparajah, E., 108427 Rajadurai, M. eds., 15747 Palm Oil Research Inst. of Malaysia, Kuala Lumpur (Malasia), 10819 Incorporated Society of Planters, Kuala Lumpur (Malasia), 35748 International Conference on Palm Oil Product Technology in the Eighties Kuala Lumpur (Malasia) 22-24 Jun 1981
Format:	biblioteca
Published:	Kuala Lumpur (Malasia) 1983
Subjects:	ELAEIS GUINEENSIS, ACEITES DE PALMAS, CAROTENOIDES, ABSORCION, ZEOLITAS,
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