This research was conducted to determine the effect of vegetable waste extract concentration, fermentation time, and the effect of its combination on ethanol content using Saccharomyces cerevisiae. This research used a complete randomized design with a factorial test consisting of two factors. The first factor is the vegetable waste extract concentration (100, 75, 50, and 25%). The second factor is the fermentation time (3, 6, 9, and 12 days). There were 16 treatments, each of which was performed 3 times. The dependent variable is ethanol content, while the control variables are pH, temperature, and Saccharomyces cerevisiae concentration of 10%. The measurement of reducing sugar used the luff method and the measurement of ethanol content used the pycnometry method. The data obtained were analyzed using two-way ANOVA, followed by the Duncan test on the difference between the treatments of waste extract concentrations and fermentation times. The results indicate that the concentration of vegetable waste extract, fermentation time, and its combination affect bioethanol production. The highest ethanol content was obtained at 100% vegetable waste extract concentration. The optimal time to produce ethanol is 9 days. The most optimal combination is at 100% concentration and 9 days of fermentation time with 4.40%.
|Journal||IOP Conference Series: Earth and Environmental Science|
|Publication status||Published - 26 Mar 2019|
|Event||International Conference Research Collaboration of Environmental Science 2018 - Surabaya, Indonesia|
Duration: 12 Mar 2018 → …