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Nipa sap pretreatment for bioethanol fermentation |
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| รหัสดีโอไอ | |
| Creator | 1. Sininart Chongkhong 2. Kanokkan Srinoon |
| Title | Nipa sap pretreatment for bioethanol fermentation |
| 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. | 4 |
| Page no. | 960 |
| Keyword | nipa sap, pretreatment, bioethanol, microorganisms, natural yeast |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | The pretreatment of nipa sap to improve the efficiency of ethanol fermentation was investigated. The ability of thepretreatment to increase fermentable sugars and yeast cells in the sap, and the suitability of nipa sap for fermentation wasassessed. Effects of pH, temperature and duration of the pretreatment were studied, and response surface models were created forreducing sugar, total sugar, and yeast cell yields. Temperature was the most important pretreatment variable, followed by pHvalue, for all the outputs modeled. The maximum cell yield of 829% (from 0.7?105to 6.5?105 CFU/mL) was achieved with a pHof 5.3 at 44 ?C for 21 minutes. These conditions gave a total sugar yield of 39% (from 266 to 369 g/L) and a reducing sugar yieldof 422% (from 36 to 188 g/L). The fermentation of pretreated and non-pretreated saps was compared, and it was found that thepretreatment increased fermentation efficiency. |
