| dc.description.abstract | This research aims to determine the effect of total flavonoid concentration and
contact time the flavonoid of katuk leaves extract as antioxidants in coconut oil. The
process used is extraction of katuk leaves then extract with the total flavonoid
concentration 6,668%, 7,748% and 27,909% was used as a sample and contacted in
the coconut oil with the contact time of 2, 4 and 6 days. Then, analysis which done
of the coconut oil are the acid number, the iodine number and the peroxide number.
The result obtained are the total flavonoid concentration increasing cause a decrease
the acid number, the iodine number increase and decrease the peroxide number
which proved that katuk leaves extract can be used as antioxidants in the coconut oil
with the best result is the total flavonoid concentration in 27,909% where the acid
number is 0,962 mg KOH/g, the iodine number is 38,705 g I2/100 g and the peroxide
number is 13,333 Meq/kg. The contact time of flavonoid in the coconut oil which
increasing cause oil properties is getting worse but the results are better than the oil
without the addition of extract. | en_US |
