Abstract:
Gemor (Nothaphoebe coriacea) is one of the plants of Non-Timber Forest Product
typical of wetlands with secondary metabolite compounds such as alkaloids, steroids,
flavonoids, triterpenoids, and phenolics. Besides being used as an insecticide, gemor bark also
has antioxidant activities, anti-influenza, antivirus, antiherpes, and anti-inflammatory. This
study aimed to encapsulate gemor bark extract using cetyltrimethylammonium bromide
(CTAB)-modified nanocellulose to increase the effectiveness of its use. The result showed that
the gemor bark extract had the IC50 value of antioxidant activity was 39,97 ppm while
encapsulating gemor bark extract using CTAB-modified nanocellulose gave encapsulation
efficiency of 53,70%, which had a good antioxidant activity with an IC50 value is 98,41 ppm.
Keywords: gemor bark; encapsulation; nanocellulose, CTAB, antioxidant activity
