Počet záznamů: 1  

A comparison of the character of algal extracellular versus cellular organic matter produced by cyanobacterium, diatom and green alga

  1. 1.
    SYSNO ASEP0422041
    Druh ASEPJ - Článek v odborném periodiku
    Zařazení RIVJ - Článek v odborném periodiku
    Poddruh JČlánek ve WOS
    NázevA comparison of the character of algal extracellular versus cellular organic matter produced by cyanobacterium, diatom and green alga
    Tvůrce(i) Pivokonský, Martin (UH-J) SAI, ORCID, RID
    Šafaříková, Jana (UH-J) RID
    Barešová, Magdalena (UH-J) RID, ORCID, SAI
    Pivokonská, Lenka (UH-J) SAI, ORCID, RID
    Kopecká, Ivana (UH-J) SAI, RID, ORCID
    Zdroj.dok.Water Research. - : Elsevier - ISSN 0043-1354
    Roč. 51, March (2014), s. 37-46
    Poč.str.10 s.
    Forma vydáníTištěná - P
    Jazyk dok.eng - angličtina
    Země vyd.GB - Velká Británie
    Klíč. slovaAlgal organic matter ; Extracellular organic matter ; Cellular organic matter ; Peptide/protein content ; Hydrophobicity ; Molecular weight fractionation
    Vědní obor RIVBK - Mechanika tekutin
    Obor OECDEnvironmental sciences (social aspects to be 5.7)
    CEPIAA200600902 GA AV ČR - Akademie věd
    Institucionální podporaUH-J - RVO:67985874
    UT WOS000331681200004
    EID SCOPUS84891616283
    DOI10.1016/j.watres.2013.12.022
    AnotaceThis study investigated characteristics of algal organic matter (AOM) derived from three species (cyanobacterium Microcystis aeruginosa, diatom Fragilaria crotonensis and green alga Chlamydomonas geitleri) which dominate phytoplanktonic populations in reservoirs supplying drinking water treatment plants. Algal growth was monitored by cell counting, optical density and dissolved organic carbon concentration measurements. Extracellular organic matter (EOM) released at exponential and stationary growth phases and cellular organic matter (COM) were characterised in terms of specific UV absorbance (SUVA), peptide/protein and non-peptide content, hydrophobicity and molecular weight (MW). It was found that both EOM and COM were predominantly hydrophilic with low SUVA. COM was richer in peptides/proteins, more hydrophilic (with about 89 % of hydrophilic fraction for all three species) and had lower SUVA than EOM. MW fractionation showed that both EOM and COM of all three species contain large portions of low-MW (< 1 kDa) compounds and high-MW (> 100 kDa) polysaccharides. Peptides/proteins exhibited narrower MW distribution than non-peptide fraction and it widened as the cultures grew. The highest amount of peptides/proteins with a significant portion of high-MW ones (22 %) was observed in COM of M. aeruginosa. The results imply that the knowledge of AOM composition and characteristics predetermine which processes would be effective in the treatment of AOM laden water.
    PracovištěÚstav pro hydrodynamiku
    KontaktSoňa Hnilicová, hnilicova@ih.cas.cz, Tel.: 233 109 003
    Rok sběru2017
Počet záznamů: 1  

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