Abstract:
The interaction of some water soluble vitamins -thiamine
hydrochloride, riboflavin, nicotinarnide, pyridoxine hydrochloride
and ascorbic acid with a xmntnlorillonite clay (Veegum) has been
investigated. The data obtained from the interactive studies fitted well on the
isothermal equilibrium adsorption-like plots. The results were analyzed using
the Langmuir's equatim The Langmuirs plot yielded reasonable linearity
from which interactive constants were calculated. The theoretical maximum interactive capacity of Veegum for each of the vitamins, that is, the b-factor in mg/g, as calculated to be 21.69, 19.50, 13.67, I5.W and 3.38 respectively. The influence of some physiochemical factors such as temperature, pH, electrolytes and dielectric constant of the reaction medium and the presence of a preservative was equally examined.
