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RISS 인기검색어
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- 저자 : Yuyuan He (검색결과 3 건)
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Huang Yuyuan,Dong Lingzhi,Gong Jian,Yang Jing,Lu Shan,Lai Xin-He,Jin Dong,Huang Qianni,Pu Ji,Liu Liyun,Xu Jianguo 한국미생물학회 2022 The journal of microbiology Vol.60 No.10
Two strictly aerobic, Gram-staining-positive, non-spore-forming, regular rod-shaped (approximately 0.7 × 1.9 mm) bacteria (HY170T and HY001) were isolated from bat feces collected from Chongzuo city, Guangxi province (22°20 54 N, 106°49 20 E, July 2011) and Chuxiong Yi Autonomous Prefecture, Yunnan province (25°09 10 N, 102°04 39 E, October 2013) of South China, respectively. Optimal growth is obtained at 25–28°C (range, 4–32°C) on BHI-5% sheep blood plate with pH 7.5 (range, 5.0–10.0) in the presence of 0.5– 1.0% NaCl (w/v) (range, 0–15% NaCl [w/v]). The phylogenetic and phylogenomic trees based respectively on the 16S rRNA gene and 845 core gene sequences revealed that the two strains formed a distinct lineage within the genus Brevibacterium, most closely related to B. aurantiacum NCDO 739T (16S rRNA similarity, both 98.5%; dDDH, 46.7–46.8%; ANI, 91.9–92.1%). Strain HY170T contained MK-8(H2), diphosphatidylglycerol (DPG) and phosphatidylglycerol (PG), galactose and ribose as the predominant menaquinone, major polar lipids, and main sugars in the cell wall teichoic acids, respectively. The meso-diaminopimelic acid (meso-DAP) was the diagnostic diamino acid of the peptidoglycan found in strain HY170T. Anteiso-C15:0 and anteiso-C17:0 were the major fatty acids (> 10%) of strains HY170T and HY001, with anteiso-C17:1A predominant in strain HY170T but absent in strain HY001. Mining the genomes revealed the presence of secondary metabolite biosynthesis gene clusters encoding for non-alpha poly-amino acids (NAPAA), ectoine, siderophore, and terpene. Based on results from the phylogenetic, chemotaxonomic and phenotypic analyses, the two strains could be classified as a novel species of the genus Brevibacterium, for which the name Brevibacterium zhoupengii sp. nov. is proposed (type strain HY170T = CGMCC 1.18600T = JCM 34230T).
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Xiuli Han,Yuyuan He,Haohao Zhao,Duo Wang 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.10
Activated carbon could be prepared from residue of rice husk using physical activation with steam as ac-tivating agent. Response surface methodology (RSM) was applied to optimize the effects of processing parameters,and regression analysis was performed on the data obtained. The optimal conditions for adsorption capacity of activatedcarbon from the residue of rice husk were activation temperature of 946 oC, activation time of 31 min and water (18 g)which changed to steam by heating, resulting in 970.06 mg·g−1of iodine adsorption capacity and 31.36% of activatedcarbon yield. The activated carbon prepared under optimum condition was mesoporous with BET surface area of 1,004.296m2·g−1, total pore volume of 0.9388 cm3·g−1and average pore diameter of 2.043 nm. The surface chemical functionalgroups of activated carbon were identified by FT-IR, and its microstructure was examined by scanning electron micro-scopy (SEM). We concluded that the process of physical activation with steam could be an environmentally harmoniousand effective method for preparing activated carbon from residue of desilicated rice husk.
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Zhu Wentao,Zhou Juan,Lu Shan,Yang Jing,Lai Xin-He,Jin Dong,Pu Ji,Huang Yuyuan,Liu Liyun,Li Zhenjun,Xu Jianguo 한국미생물학회 2022 The journal of microbiology Vol.60 No.2
Four novel Gram-negative, mesophilic, aerobic, motile, and cocci-shaped strains were isolated from tick samples (strains 546T and 573) and respiratory tracts of marmots (strains 1318T and 1311). The 16S rRNA gene sequencing revealed that strains 546T and 573 were 97.8% identical to Roseomonas wenyumeiae Z23T, whereas strains 1311 and 1318T were 98.3% identical to Roseomonas ludipueritiae DSM 14915T. In addition, a 98.0% identity was observed between strains 546T and 1318T. Phylogenetic and phylogenomic analyses revealed that strains 546T and 573 clustered with R. wenyumeiae Z23T, whereas strains 1311 and 1318T grouped with R. ludipueritiae DSM 14915T. The average nucleotide identity between our isolates and members of the genus Roseomonas was below 95%. The genomic G+C content of strains 546T and 1318T was 70.9% and 69.3%, respectively. Diphosphatidylglycerol (DPG) and phosphatidylethanolamine (PE) were the major polar lipids, with Q-10 as the predominant respiratory quinone. According to all genotypic, phenotypic, phylogenetic, and phylogenomic analyses, the four strains represent two novel species of the genus Roseomonas, for which the names Roseomonas haemaphysalidis sp. nov. and Roseomonas marmotae sp. nov. are proposed, with 546T (= GDMCC 1.1780T = JCM 34187T) and 1318T (= GDMCC 1.1781T = JCM 34188T) as type strains, respectively.
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