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1光生物反应器培养微藻研究进展显示文摘微藻具有固定CO2和净化有机废水的能力,在环保、食品饲(饵)料、医药和生物能源开发等领域备受关注,但规模化培养及其产业化仍是研究的难点,亟待解决。就常用于大规模培养微藻的光生物反应器的特点和结构进行了综述。其中,封闭式微藻光生物反应器能够较好地调控藻种的培养条件、不易遭受污染,藻种的纯度容易控制,但培养规模小,生产成本较高;而开放式微藻光生物反应器无法精确控制藻种生长环境,但生产规模大、产量高、生产成本低,因此应用广泛。最佳的方法是综合两者优点,即首先利用封闭式微藻光生物反应器进行中试放大,大量繁殖藻种,然后投入开放式微藻光生物反应器内进行大规模商业生产,此方法有望成为微藻光生物反应器的发展方向,以期为微藻大规模培养提供参考借鉴。李磊 张红兵 李文涛 李会宣 2020生物技术进展2020,10,2:8
2Characterization of wet microalgal cells pretreated with steam for lipid extraction显示文摘Steam pretreatment was employed to disrupt Microalgal cells for lipids extraction.Effects of steam pretreatment on microstructure of microalgal cells were investigated through scanning electron microscopy(SEM)and transmission electron microscopy(TEM).Effect of treatment on lipid extraction was also studied.Microalgal cell walls were distorted after steam pretreatment due to the hydrolysis of organic macromolecules contained in cell wall.Maximum curvature was increased from 1.88×10^(-6) m^(-1) to 1.43×10^(-7) m^(-1) after treatment with the steam at 130℃.The fractal dimension of microalgal cells increased from 1.25 to 1.30 after pretreatment for 15 min,and further increased to 1.47 when the pretreatment time was increased to 60 min.Increased steam pretreatment temperature and time enhanced the hydrolysis of organic macromolecules,and finally destroyed microalgal cell walls at pretreatment temperature of 130℃and pretreatment time of 60 min.Lipid extracted from wet microalgal was significantly increased(2.1-fold)after pretreatment.Wenlu Song Rui Huang Hao Guo Chunguang Yin Chuanling Wang Jun Cheng Weijuan Yang 2021Chinese Journal of Chemical Engineering2021,34,9:0
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