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Spoilage Lactic Acid Bacteria in the Brewing Industry
( Zhenbo Xu ),( Yuting Luo ),( Yuzhu Mao ),( Ruixin Peng ),( Jinxuan Chen ),( Thanapop Soteyome ),( Caiying Bai ),( Ling Chen ),( Yi Liang ),( Jianyu Su ),( Kan Wang ),( Junyan Liu ),( Birthe V. Kjell 한국미생물 · 생명공학회 2020 Journal of microbiology and biotechnology Vol.30 No.7
Lactic acid bacteria (LAB) have caused many microbiological incidents in the brewing industry, resulting in severe economic loss. Meanwhile, traditional culturing method for detecting LAB are time-consuming for brewers. The present review introduces LAB as spoilage microbes in daily life, with focus on LAB in the brewing industry, targeting at the spoilage mechanism of LAB in brewing industry including the special metabolisms, the exist of the viable but nonculturable (VBNC) state and the hop resistance. At the same time, this review compares the traditional and novel rapid detection methods for these microorganisms which may provide innovative control and detection strategies for preventing alcoholic beverage spoilage, such as improvement of microbiological quality control using advanced culture media or different isothermal amplification methods.
Fortin, Dale A.,Tillo, Shane E.,Yang, Guang,Rah, Jong-Cheol,Melander, Joshua B.,Bai, Suxia,Soler-Cedeñ,o, Omar,Qin, Maozhen,Zemelman, Boris V.,Guo, Caiying,Mao, Tianyi,Zhong, Haining Society for Neuroscience 2014 The Journal of neuroscience Vol.34 No.50
<P>Stoichiometric labeling of endogenous synaptic proteins for high-contrast live-cell imaging in brain tissue remains challenging. Here, we describe a conditional mouse genetic strategy termed endogenous labeling via exon duplication (ENABLED), which can be used to fluorescently label endogenous proteins with near ideal properties in all neurons, a sparse subset of neurons, or specific neuronal subtypes. We used this method to label the postsynaptic density protein PSD-95 with mVenus without overexpression side effects. We demonstrated that mVenus-tagged PSD-95 is functionally equivalent to wild-type PSD-95 and that PSD-95 is present in nearly all dendritic spines in CA1 neurons. Within spines, while PSD-95 exhibited low mobility under basal conditions, its levels could be regulated by chronic changes in neuronal activity. Notably, labeled PSD-95 also allowed us to visualize and unambiguously examine otherwise-unidentifiable excitatory shaft synapses in aspiny neurons, such as parvalbumin-positive interneurons and dopaminergic neurons. Our results demonstrate that the ENABLED strategy provides a valuable new approach to study the dynamics of endogenous synaptic proteins <I>in vivo</I>.</P>