Efficient approach for bioethanol production from red seaweed Gelidium amansii
Efficient approach for bioethanol production from red seaweed Gelidium amansii
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DOI：
10.1016/j.biortech.2014.10.050
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发表时间：
2015-01-01
影响因子：
11.4
通讯作者：
Bae, Hyeun-Jong
中科院分区：
文献类型：
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作者：
Kim, Ho Myeong;Wi, Seung Gon;Bae, Hyeun-Jong
石花菜 (GA) 是一种红海藻，由于半乳糖和葡萄糖含量高，是一种受欢迎的食品和化学品来源。在这项研究中，我们研究了用高压釜处理的 GA (ATGA) 生产生物乙醇的潜力。所提出的方法包括将 GA 高压灭菌 60 分钟以水解为葡萄糖。单独水解和发酵处理 (SHF) 的最大乙醇浓度为 3.33 mg/mL，6 小时后转化率为 74.7%（2% 底物负载，w/v）。相比之下，同时糖化发酵（SSF）产生的乙醇浓度为3.78 mg/mL，12小时后乙醇转化率为84.9%。我们还记录了 24 小时后来自 ATGA 的 15%（w/v）干物质的 SSF 处理的乙醇浓度为 25.7 mg/mL。这些结果表明，高压灭菌可以提高GA的葡萄糖和乙醇转化率，并且SSF在乙醇生产方面优于SHF。 (C) 2014 Elsevier Ltd. 保留所有权利。
Gelidium amansii (GA), a red seaweed species, is a popular source of food and chemicals due to its high galactose and glucose content. In this study, we investigated the potential of bioethanol production from autoclave-treated GA (ATGA). The proposed method involved autoclaving GA for 60 min for hydrolysis to glucose. Separate hydrolysis and fermentation processing (SHF) achieved a maximum ethanol concentration of 3.33 mg/mL, with a conversion yield of 74.7% after 6 h (2% substrate loading, w/v). In contrast, simultaneous saccharification and fermentation (SSF) produced an ethanol concentration of 3.78 mg/mL, with an ethanol conversion yield of 84.9% after 12 h. We also recorded an ethanol concentration of 25.7 mg/mL from SSF processing of 15% (w/v) dry matter from ATGA after 24 h. These results indicate that autoclaving can improve the glucose and ethanol conversion yield of GA, and that SSF is superior to SHF for ethanol production. (C) 2014 Elsevier Ltd. All rights reserved.