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学科主题: Marine & Freshwater Biology
题名: Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya
作者: Chen, Li1, 2; Li, Tianli1; Guan, Liang1; Zhou, Yawei1; Li, Pengfu1
通讯作者: Chen, L, Nanjing Univ, Sch Life Sci, State Key Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China ; pengfuli@nju.edu.cn
关键词: Flocculating activity ; Released polysaccharide ; Marine cyanobacteria ; Microcoleus sp. ; Lyngbya sp.
刊名: AQUATIC BIOLOGY
发表日期: 2011
DOI: 10.3354/ab00309
卷: 11, 期:3, 页:243-248
收录类别: SCI
文章类型: Article
部门归属: [Chen, Li; Li, Tianli; Guan, Liang; Zhou, Yawei; Li, Pengfu] Nanjing Univ, Sch Life Sci, State Key Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China; [Chen, Li] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China [30670400]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
类目[WOS]: Marine & Freshwater Biology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Mat-forming cyanobacteria of the genera Microcoleus and Lyngbya were isolated from the Tainan Saltworks, China. The released polysaccharides (RPSs) from the 2 cyanobacterial isolates flocculated kaolin clay from suspensions, and this flocculating activity decreased with increasing pH from 3 to 10.5. The flocculating activities increased with increasing metal ion concentrations and reached plateaus when the concentrations of monovalent cations (Na+ or K+) and divalent cations (Mg2+ or Ca2+) increased to 0.4 and 0.2 mol l(-1), respectively. Compared with the previously reported data about the flocculating activities of exopolysaccharide from the freshwater cyanobacterium Phormidium J-1, the presence of higher concentrations of metal ions was required for the flocculating activities of the RPSs from the 2 marine cyanobacteria studied here. The production of extracellular bioflocculants by the benthic cyanobacteria could be of considerable importance in the flocculation and sedimentation of clay particles in brines, which in turn would allow light to penetrate to the sediment-water interface.
英文摘要: Mat-forming cyanobacteria of the genera Microcoleus and Lyngbya were isolated from the Tainan Saltworks, China. The released polysaccharides (RPSs) from the 2 cyanobacterial isolates flocculated kaolin clay from suspensions, and this flocculating activity decreased with increasing pH from 3 to 10.5. The flocculating activities increased with increasing metal ion concentrations and reached plateaus when the concentrations of monovalent cations (Na(+) or K(+)) and divalent cations (Mg(2+) or Ca(2+)) increased to 0.4 and 0.2 mol l(-1), respectively. Compared with the previously reported data about the flocculating activities of exopolysaccharide from the freshwater cyanobacterium Phormidium J-1, the presence of higher concentrations of metal ions was required for the flocculating activities of the RPSs from the 2 marine cyanobacteria studied here. The production of extracellular bioflocculants by the benthic cyanobacteria could be of considerable importance in the flocculation and sedimentation of clay particles in brines, which in turn would allow light to penetrate to the sediment-water interface.
关键词[WOS]: MICROBIAL MATS ; SEDIMENTS ; EXOPOLYSACCHARIDES ; MICROPHYTOBENTHOS ; BIOFLOCCULANT ; SUBSTANCES ; BINDING ; SUGARS ; FLATS
语种: 英语
WOS记录号: WOS:000287668300006
ISSN号: 1864-7790
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/15534
Appears in Collections:水生生物分子与细胞生物学研究中心_期刊论文

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作者单位: 1.Nanjing Univ, Sch Life Sci, State Key Lab Pharmaceut Biotechnol, Nanjing 210093, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China

Recommended Citation:
Chen, Li; Li, Tianli; Guan, Liang; Zhou, Yawei; Li, Pengfu.Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya,AQUATIC BIOLOGY,2011,11(3):243-248
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