Results 191 to 200 of about 11,761 (211)

Chromatography of microcystins

Analytica Chimica Acta, 1997
Abstract This review deals with the analytical and preparative chromatography of microcystins and nodularins, cyclic peptide liver toxins and tumor promoters from cyanobacteria. The chemistry of the toxins, extraction from various matrices, separation on different stationary phases, and detection of intact and derivatized toxins are considered.
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Microcystin-LR Adsorption by Activated Carbon

Journal of Colloid and Interface Science, 2001
We use a selection of wood-based and coconut-based activated carbons to investigate the factors controlling the removal of the hepatotoxin microcystin-LR (m-LR) from aqueous solutions. The wood carbons contain both micropores and mesopores. The coconut carbons contain micropores only.
Phillip, Pendleton, Russell, Schumann, Shiaw Hui, Wong   +2 more
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Microcystin in Missouri reservoirs

Lake and Reservoir Management, 2009
Abstract During summers (May–Aug) 2004–2006, 177 Missouri reservoirs were sampled monthly at open pelagic locations to assess regional patterns in microcystin concentration, frequency of occurrence over successive summer seasons and relations with environmental factors. Microcystin was detected in 58% of Missouri reservoirs and 23% of samples (n = 1402)
Jennifer L. Graham, John R. Jones
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Automated purification of microcystins

Journal of Chromatography A, 1996
Abstract A simplified method for the concentration and purification of microcystins was developed. A 3-1 volume of cyanobacterial scum (equivalent to 124 g dry mass of cells) collected from Rutland and Water, Leicestershire, in 1989 was extracted in methanol and centrifuged and the supernatant was retained. This was diluted to ca.
Christine Edwards, Linda A. Lawton, Sadie M. Coyle, Paul Ross   +3 more
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The biological functions of microcystins

Water Research
Microcystins are potent hepatotoxins predominantly produced by bloom-forming freshwater cyanobacteria (e.g., Microcystis, Planktothrix, Dolichospermum). Microcystin biosynthesis involves large multienzyme complexes and tailoring enzymes encoded by the mcy gene cluster. Mutation, recombination, and deletion events have shaped the mcy gene cluster in the
Nian Wei, Chenlin Hu, Elke Dittmann, Lirong Song, Nanqin Gan   +4 more
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Microcystins

2009
Dorota Szydlowska, Marek Trojanowicz
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Trace analysis of microcystins

Phycologia, 1996
Abstract It has recently become important to determine trace amounts of microcystins in complicated matrices such as water and biological samples, because they show potent hepatotoxicity and tumour-promoting activity on the liver. For development of an analytical method, it is essential to understand the physical, chemical and biological properties of ...
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Microcystin: Isolation by Supercritical Fluid Extraction

2005
Huwei Liu, Bing Yu
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Microcystin Toxicity

2004
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Microcystin-LR

2014
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