Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 水生生物分子与细胞生物学研究中心 > 期刊论文

	Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya
	Chen, Li 1,2; Li, Tianli 1; Guan, Liang 1; Zhou, Yawei 1; Li, Pengfu 1
刊名	AQUATIC BIOLOGY
	2011
卷号	11 期号:3 页码:243-248
关键词	Flocculating activity Released polysaccharide Marine cyanobacteria Microcoleus sp. Lyngbya sp.
ISSN号	1864-7790
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
中文摘要	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 (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.
学科主题	Marine & Freshwater Biology
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Marine & Freshwater Biology
研究领域[WOS]	Marine & Freshwater Biology
关键词[WOS]	MICROBIAL MATS ; SEDIMENTS ; EXOPOLYSACCHARIDES ; MICROPHYTOBENTHOS ; BIOFLOCCULANT ; SUBSTANCES ; BINDING ; SUGARS ; FLATS
收录类别	SCI
资助信息	National Natural Science Foundation of China [30670400]; Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry
语种	英语
WOS记录号	WOS:000287668300006
公开日期	2011-04-14
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/15534]
专题	水生生物研究所_水生生物分子与细胞生物学研究中心_期刊论文
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
推荐引用方式 GB/T 7714	Chen, Li,Li, Tianli,Guan, Liang,et al. Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya[J]. AQUATIC BIOLOGY,2011,11(3):243-248.
APA	Chen, Li,Li, Tianli,Guan, Liang,Zhou, Yawei,&Li, Pengfu.(2011).Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya.AQUATIC BIOLOGY,11(3),243-248.
MLA	Chen, Li,et al."Flocculating activities of polysaccharides released from the marine mat-forming cyanobacteria Microcoleus and Lyngbya".AQUATIC BIOLOGY 11.3(2011):243-248.