| dc.description.abstract | One of important coconut water application is for preparation of nata de coco
or bacterial cellulose. The resulting bacterial cellulose in fact can be used in medical
application as temporary substitute for skin or wound cover, and the product through
fermentation process of coconut water can be improved by addition of carbohydtate
compound as source of glucose into prepared fermentation medium. In this research,
glucose of sucrose was used, and maltosa continued cabrohydrate was added to form
bacterial cytosan cellulose material whose application is expected to render medical
application with multiple properties.
By using 100 mL of coconut water being administered 0,5 g of urea and 10 g
of sucrose or maltosa and followed by addition of acetat acid until pH 4, the
fermentation was then made by using Acetobacter xylinum to produce the bacterial
cellulose. Furthermore, each fermentation medium could produce material of cytosan
bacteri cellulose cytosan cellulose by addition of cytosan in mass variations 0,5 g, 1,0
g, 1,5 g, 2,0 g for 12 hours.
The result gained is pellicle layer floating on medium surface. And then the
pellicle was dried out, and thin layer was formed as bacteri cellulose or bacteri
cellulose or bacterial cytosan cellulose material. From the result of SEM, FT-IR and
pulling analysis test, the best treatment result was variable by addition of cytosan for
0,5 g of sucrose, the ductile strength was 20,38 Mpa, and flexibility was 29,03 %,
however by using raw material of maltosa in treatment the best result was variable by
addition of 0,5 g maltosa, tensile strength was 9,60 Mpa, and flexibility was 48,38 %. | en_US |
