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Alternative energy under the Royal Initiative of His Majesty the King:ethanol from nipa sap with yeast isolated |
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| รหัสดีโอไอ | |
| Creator | 1. Sininart Chongkhong 2. Sirinun Puangpee |
| Title | Alternative energy under the Royal Initiative of His Majesty the King:ethanol from nipa sap with yeast isolated |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2561 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 3 |
| Page no. | 648 |
| Keyword | ethanol, nipa sap, yeast isolated, fermentation, Royal Initiative Project |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The objective of this work was to add value to nipa sap from nipa palm. Nipa palm is a plant grown in a conservationprogram under a Royal Initiative Project. The potential of the nipa sap was assessed for bioethanol production. The sap wasfermented using the yeast isolated from the fresh sap. The fermentation variables including total sugar concentration, pH, yeastsuspension, temperature, and time were analyzed with response surface methodology on the ethanol concentration, ethanol yield,and fermentation efficiency. Time was the most significant effect, whereas the yeast suspension had the least effect. The yield isconsidered the priority. The optimum total sugar concentration was 212.6 g/L with a pH of 4.8, and 106cells/mL of yeastsuspension at 32 ?C for 77 h. An experimental yield of 53.2% was achievable under these conditions. The achieved experimentalconcentration of ethanol was 113.1 g/L. Ethanol productivity and efficiency were 1.5 g/L.h and 98.6%, respectively |
