An HPLC separation of the geometric isomers of β-carotene was developed
to evaluate the Provitamin A content of Palm oil . Different stationary phases
were studied, the best separation of all-trans-, 9-cis- and 13-cis-β-carotene were
obtained with
calcium hydroxide columns using isocratic elution . Eluent was nhexane
or isooctane or mixtures of them. These techniques were used to
determine the provitamin A content of palm oil .
Sweeteners are used as alternatives of Sugar because of their slow
absorption and incomplete metabolism in human body, which are positively
destinies in setting free small amount of calorie.
This research presents the influence of ultrasonic on th
e sorbitol synthesis,
starting from Glucose by implementing hydrogenation using Lithium
Aluminum Hydride. The result we have reached by using the ultrasonic as
compared with mechanical mixing or other method have lead us to two
conclusions:
The first was that we have obtained almost the same quantity of the sorbitol.
The second was that by using ultrasonic, micelles of colloid Aluminum
hydroxide were accumulated. This accumulation resulted in an easy separation
by purification, which eventually lead to a super pure sorbitol solution.
We hope that these results will be useful for the Crystallography science.
