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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
2018
发表期刊ENERGY
ISSN0360-5442
卷号142页码:339-345
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.
关键词Extrusion Microalgae Cell Disruption Intracellular Valuables
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1016/j.energy.2017.10.061
收录类别SCI
语种英语
关键词[WOS]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
WOS类目Thermodynamics ; Energy & Fuels
项目资助者National Natural Science Foundation of China(21706278) ; National Key Research and Development Program-China(2016YFB0601005)
WOS记录号WOS:000424854900031
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/24061
专题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
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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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