Authors:
Hamdan Azhari
1
;
Emma Zaidar Nasution
2
and
Rumondang Bulan Nasution
2
Affiliations:
1
Postgraduate Chemistry Study Programme, Universitas Sumatera Utara, Jl. Bioteknologi No. 1, Medan, Indonesia
;
2
Department of Chemistry, Universitas Sumatera Utara, Jl. Bioteknologi No. 1, Medan
Keyword(s):
Acid Hydrolysis, Bioethanol, Lindur Fruit, Strach, Zymomonas mobilis.
Abstract:
Bioethanol is the fermentation product of hydrolyzed carbohydrates by using acids or enzymes. Commonly, bioethanol uses fermented microbes, one of them is bacterium Zymomonas mobilis. Lindur ( Burguiera gymnorrhiza ) is the fruit of one kind mangrove plant which are not fully utilized. One of the chemical content of lindur Fruit is carbohydrate 23.53 %, it can be used for the production of bioethanol which uses fermentation of carbohydrates. Isolation of starch which is one kind of carbohydrates from lindur fruit by precipitation the starch using water. Pati will be hydrolyzed using HCl 20 % to obtain a solution of glucose around 7.49 %. after that, fermentation carried out using a different variation of the number of inoculums (5, 10 and 15 % (v/v)). Bioethanol obtained from the fermentation process will be measured using Gas Chromatography (GC ), density, acidity, and evaporation residue also tested. The result shows the highest content of bioethanol is 43.75 %.