Hermansyah, Hermansyah (2021) Candida tropicalis isolated from tuak, a north sumatera Indonesia traditional beverage, for bioethanol production (Peer Review). Fakultas MIPA, Universitas Sriwijaya, Unsri. (Unpublished)
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Abstract
Tuak is a traditional alcoholic beverage, one of the most widely known in the North Sumateran region of Indonesia. It is produced by a spontaneous fermentation process through the application of one or more several kinds of wood bark or root, called raru (Xylocorpus wood bark or a variety of forest mangosteen), into the sap water of sugar palm (Arenga pinnata) for 2−3 days. In this research, yeast that are potentially useful for ethanol production was isolated from Tuak and identified. Based on analysis of D1/D2 domain sequence of LSU (large subunit) rRNA genes, those isolated yeast strains, HT4, HT5, and HT10 were identified as Candida tropicalis. Fermentation test of these C. tropicalis isolates displayed an ability to pro- duce 6.55% (v/v) and 4.58% ethanol at 30oC and 42oC, respectively. These results indicated C. tropicalis isolates more o rapidly utilize glucose and obtain higher levels of the production of ethanol at the higher temperature of 42 C than S. cerevisiae, a common yeast used for bioethanol fermentation.
| Item Type: | Other |
|---|---|
| Subjects: | |
| Divisions: | 08-Faculty of Mathematics and Natural Science > 47201-Chemistry (S1) |
| Depositing User: | Hermansyah Hermansyah |
| Date Deposited: | 26 Aug 2020 16:23 |
| Last Modified: | 17 Sep 2021 14:53 |
| URI: | http://repository.unsri.ac.id/id/eprint/33848 |
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