Production of 2,3-butanediol from Ulva pertusa hydrolysate using hydrothermal pretreatment followed by enzymatic hydrolysis

IF 7.4 2区 工程技术 Q1 ENGINEERING, CHEMICAL Journal of Environmental Chemical Engineering Pub Date : 2024-09-23 DOI:10.1016/j.jece.2024.114225
Du Eon Kim, Gwi-Taek Jeong
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Abstract

This study aimed to evaluate the effectiveness of the marine macro-algae Ulva pertusa as a potential source of important chemicals, including 2,3-butanediol (2,3-BDO). This study examined how pretreatment conditions like liquid-to-solid ratio, reaction temperature, and reaction time influence the hydrolysis of U. pertusa biomass through hydrothermal pretreatment followed by enzymatic hydrolysis. Consequently, 23.44 g/L (12.7 % based on biomass weight) of reducing sugar was produced under hydrothermal pretreatment conditions (liquid-to-solid ratio of 6:1, reaction temperature of 165 °C, and reaction time of 15 min), followed by enzymatic hydrolysis. During hydrothermal pretreatment, the sugar concentration peaked at 3.68 g/L within the severity factor (SF) range of 3.5–4.4. During subsequent enzymatic hydrolysis, the sugar concentration remained stable until the SF reached 4.0. However, when SF exceeded 4.0, the sugar concentration rapidly decreased. The effectiveness of U. pertusa hydrolysate was evaluated via the fermentation of 2,3-BDO. Pantoea agglomerans successfully produced 2,3-BDO with a yield of 0.299 g/g-sugar from U. pertusa hydrolysate. In summary, this study demonstrated the effectiveness of U. pertusa hydrolysate as a bioresource for producing biochemicals, including 2,3-BDO.
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利用热液预处理和酶水解从孔石莼水解物中生产 2,3-丁二醇
本研究旨在评估海洋大型藻类百日草(Ulva pertusa)作为重要化学物质(包括 2,3-丁二醇(2,3-BDO))潜在来源的有效性。本研究考察了液固比、反应温度和反应时间等预处理条件如何影响通过水热预处理然后进行酶水解的孔石莼生物质。结果,在水热预处理条件下(液固比为 6:1、反应温度为 165 ℃、反应时间为 15 分钟),产生了 23.44 g/L(按生物质重量计算为 12.7%)还原糖,然后进行酶水解。在水热预处理过程中,糖浓度在 3.5-4.4 严重因子(SF)范围内达到峰值 3.68 克/升。在随后的酶水解过程中,糖浓度保持稳定,直到 SF 达到 4.0。然而,当 SF 超过 4.0 时,糖浓度迅速下降。通过发酵 2,3-BDO,评估了 U. pertusa 水解产物的有效性。从百日草水解物中成功生产出 2,3-BDO,产量为 0.299 克/克-糖。总之,本研究证明了百日草水解物作为生产生化物质(包括 2,3-BDO)的生物资源的有效性。
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来源期刊
Journal of Environmental Chemical Engineering
Journal of Environmental Chemical Engineering Environmental Science-Pollution
CiteScore
11.40
自引率
6.50%
发文量
2017
审稿时长
27 days
期刊介绍: The Journal of Environmental Chemical Engineering (JECE) serves as a platform for the dissemination of original and innovative research focusing on the advancement of environmentally-friendly, sustainable technologies. JECE emphasizes the transition towards a carbon-neutral circular economy and a self-sufficient bio-based economy. Topics covered include soil, water, wastewater, and air decontamination; pollution monitoring, prevention, and control; advanced analytics, sensors, impact and risk assessment methodologies in environmental chemical engineering; resource recovery (water, nutrients, materials, energy); industrial ecology; valorization of waste streams; waste management (including e-waste); climate-water-energy-food nexus; novel materials for environmental, chemical, and energy applications; sustainability and environmental safety; water digitalization, water data science, and machine learning; process integration and intensification; recent developments in green chemistry for synthesis, catalysis, and energy; and original research on contaminants of emerging concern, persistent chemicals, and priority substances, including microplastics, nanoplastics, nanomaterials, micropollutants, antimicrobial resistance genes, and emerging pathogens (viruses, bacteria, parasites) of environmental significance.
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