Bj. Desai et Pj. Dubash, RECOVERY OF CAROTENES FROM CRUDE PALM OIL BY ADSORPTION METHOD, Journal of Food Science and Technology, 31(1), 1994, pp. 60-61
Acid-treated bentonite and alumina gel mixture, as adsorbents in varyi
ng ratios, recovered significant amounts of carotenoids from crude pal
m oil, without affecting its quality. As the clay level increased, the
amount of residual carotenoids in the palm oil decreased. The maximum
adsorption of 79% carotenoids was possible at 4:1 ratio of bentonite
and alumina gel.