摘要：The research objective was to modify bioethanol fermentation by batch condition from seaweed (Eucheuma cottonii) as a substrate to produce a high yield of bioethanol.Type of sugar found in acid hydrolisates Eucheuma cottonii consisted of 4.95% galactose,0.25% glucose,0.04% xyllose,and 0.02% maltoheptaosa.The highest ethanol production from adapted Saccharomyces cerevisiae IPBCCAL IX was 2.38% (v/v) ethanol in fermentation broth,with 79.09% substrate efficiency and 56.30% fermentation efficiency which was fermented for 6 days.The highest ethanol production from adapted Pachysolen tannophilus IPBCC AC IX was 0.11% (v/v) ethanol in fermentation broth,with 15.39% substrate efficiency and 2.60% fermentation efficiency which fermented for 4 days.The highest ethanol production with culture refresh treatment using adapted Pachysolen tannophilus IPBCC AC IX after 24 hours fermentation by adapted Saccharomyces cerevisiae IPBCCAL IX was 0.81% (v/v) ethanol in fermentation broth,with 82.42% substrate efficiency and 19.79% fermentation efficiency which fermented for 6 days.The highest ethanol production with culture refresh treatment using adapted Saccharomyces cerevisiae IPBCCAL IX after 24 hours fermentation by adapted Saccharomyces cerevisiae IPBCCAL IX was 1.76% (v/v) ethanol in fermentation broth,with 53.06% substrate efficiency and 43.53% fermentation efficiency which fermented for 6 days.
其他摘要：Tujuan dari penelitian ini adalah adalah modifikasi fermentasi bioetanol secara curah dari rumput laut (Eucheuma cottonii) sebagai substrat sehingga dihasilkan rendemen produk bioetanol yang tinggi.Jenis gula yang terdapat pada hidrolisat asam Eucheuma co
