Medouze D.Pan C.-L.KUAN-CHEN CHENG2019-07-112019-07-11201816052471https://scholars.lib.ntu.edu.tw/handle/123456789/413409Fossil fuels heat our homes, run our vehicles, power industry and manufacturing, and provide us with electricity. However, as a result of our continual use the planets supply is diminishing, an alternative fuel source should thus be researched. Bioethanol is the ideal substitute as it is made up from the fermentation of organic substrates. In this study, Ulva lactuca was used as a feedstock for production of ethanol following different hydrolysis and fermentation strategies used to demonstrate the process ethanol production and influences of different conditions. The results of the agitation experiments revealed that static culture produced slightly higher ethanol (7.80 ¡Ó 0.40 g/L) than agitations at 50 rpm and 150 rpm (6.10 ¡Ó 0.70 g/L and 5.90 ¡Ó 0.23 g/L) for Kluyveromyces marxianus K-21 (K-21) and static culture, 50, 150 rpm for Pichia stipitis BCRC 21777 (BCRC 21777) was 5.21 ¡Ó 0.37 g/L, 4.90 ¡Ó 0.19 g/L, and 4.80 ¡Ó 0.35 g/L respectively, 10% substrate loading was the optimum for both yeast K-21 and BCRC 21777 with ethanol concentrations of 10.60 ¡Ó 0.31 g/L and 6.80 ¡Ó 0.20 g/L was obtained at optimized fermentation conditions of 35¢XC, static culture and a pH of 6. For the result of the co-culture a total amount of 11.5 ¡Ó 0.7 g/L bioethanol was produced. The results of this research proposes that Ulva lactuca could be used as a feedstock for bioethanol production. ? 2018 Chinese Agricultural Chemical Society. Ltd.All Rights Reserved.Co-fermentationKluyveromyces marxianus K-21Lignocellulosic materialPichia stipitis BCRC 21777Ulva lactuca[SDGs]SDG7[SDGs]SDG9journal article10.6578/TJACFS.201808_56(34).00022-s2.0-85062896076https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062896076&doi=10.6578%2fTJACFS.201808_56%2834%29.0002&partnerID=40&md5=241942b240b461678d0d91621e727101