Microalgal cell disruption via extrusion for the production of intracellular valuables | |
Wang, Meng1; Cheng, He2,3; Chen, Shibao1; Wen, Shumei2; Wu, Xia2; Zhang, Dongmei2; Yuan, Qipeng3; Cong, Wei2 | |
刊名 | ENERGY |
2018 | |
卷号 | 142页码:339-345 |
关键词 | Extrusion Microalgae Cell Disruption Intracellular Valuables |
ISSN号 | 0360-5442 |
DOI | 10.1016/j.energy.2017.10.061 |
文献子类 | Article |
英文摘要 | The objective of this study was to evaluate the effectiveness of extrusion on cell disruption of a marine alga Nannochloropsis oceanica with a single-screw extruder for the production of intracellular valuables. The effect of operating parameters including feed moisture (15-24%) and screw rotation speed (300-450 rpm) was also determined. Experimental results demonstrated that extrusion was effective in algal cell disruption indicated by direct observation of cell break-up through scanning electron microscope (SEM) and significant increases up to 94.3% and 68.7% in lipid and sugars yield, respectively between treatments and the control (no treatment). It was found that feed moisture (15%) generally improved cell disruption efficiency due to longer residence time of biomass in the extruder. Increasing screw rotation speed from 300 to 450 rpm tended to enhance cell disruption because of stronger shear forces on algae. However, the effectiveness was restricted by residence time of biomass in the extruder because a faster screw rotation speed resulted in a higher biomass flow rate. Thus, the optimal cell disruption was not always achieved at the fastest screw rotation speed; instead, it appeared at the levels depending on specific evaluation indicators (around 350 rpm), therefore the optimal conditions for algal cell disruption were obtained at about 15% of feed moisture and 350 rpm of screw rotation speed. This study also confirmed that extrusion was beneficial for the production of more valuables including polyunsaturated fatty acids (PUFA) and essential amino acids (EAA) from microalgae, for example up to 74.3% increase of PUFA and 20.5% increase of EAA after extrusion compared to the control. (C) 2017 Elsevier Ltd. All rights reserved. |
WOS关键词 | Twin-screw Extruder ; Biofuel Production ; Lipid Extraction ; Microbial-cells ; Oil Extraction ; Snack Products ; Biomass ; Acid ; Microorganisms ; Configuration |
WOS研究方向 | Thermodynamics ; Energy & Fuels |
语种 | 英语 |
WOS记录号 | WOS:000424854900031 |
资助机构 | National Natural Science Foundation of China(21706278) ; National Key Research and Development Program-China(2016YFB0601005) |
内容类型 | 期刊论文 |
源URL | [http://ir.ipe.ac.cn/handle/122111/24061] |
专题 | 过程工程研究所_生化工程国家重点实验室 |
作者单位 | 1.Chinese Acad Agr Sci, Minist Agr, Key Lab Plant Nutr & Fertilizer, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China 3.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, 15 East Rd North Third Ring, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Meng,Cheng, He,Chen, Shibao,et al. Microalgal cell disruption via extrusion for the production of intracellular valuables[J]. ENERGY,2018,142:339-345. |
APA | Wang, Meng.,Cheng, He.,Chen, Shibao.,Wen, Shumei.,Wu, Xia.,...&Cong, Wei.(2018).Microalgal cell disruption via extrusion for the production of intracellular valuables.ENERGY,142,339-345. |
MLA | Wang, Meng,et al."Microalgal cell disruption via extrusion for the production of intracellular valuables".ENERGY 142(2018):339-345. |
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