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1

Seaweed extract by microwave assisted extraction as plant growth biostimulant

100%

Michalak I., Tuhy Ł., Chojnacka K.

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issue 1

EN

Microwave Assisted Extraction (MAE) was used to obtain aqueous extracts of Baltic seaweeds. Three different temperatures: 25, 40, 60°C were examined. Algal extracts were characterized in terms of polyphenols, micro- and macroelements, lipids content and antibacterial properties. This is the first study that examines the effect of algal extract obtained by MAE in plant cultivation. The utilitarian properties were checked in the germination tests on Lepidium sativum for three dilutions of extract (0.5, 2.5 and 10%). Results showed that the content of polyphenols in extracts decreased with temperature, whereas the content of micro- and macroalements increased with temperature. The aqueous extracts did not contain fatty acids and did not show inhibitory effect on Escherichia coli and Staphylococcus aureus. Germination tests showed that plants in the experimental groups with an optimal concentration of extract had a higher height, weight, chlorophyll and micro- and macroelement content than plants in the control group. The algal extracts did not significantly influence the morphology of plants as shown in SEM pictures. Results show that algal extracts obtained by MAE have the highest potential applied in agriculture as biostimulants.

2

Patchiness of sympagic algae and meiofauna from the fast ice of North Open Water (NOW) Polynya

88%

Wiktor J., Szymelfenig M., Wiktor J., Szymelfenig M.

Polish Polar Research

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2002

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vol. 23

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issue 2

3

Relationship of cyanobacterial and algal assemblages with vegetation in the high Arctic tundra (West Spitsbergen, Svalbard Archipelago)

88%

Richter D., Pietryka M., Matuła J.

Polish Polar Research

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2015

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issue 3

4

Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica

88%

Coufalík P., Nývlt D., Prochazková P., Zvěřina O., Trnková K., Skácelová K., Komárek J.

Polish Polar Research

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2016

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vol. 37

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issue 4

5

Phytoplankton of the Olaf Prydz Bay (Indian Ocean, East Antarctica) in February 1969

88%

Ligowski R., Ligowski R.

Polish Polar Research

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1983

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vol. 4

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issue 1-4

6

The use of phytoplankton communities for assessment of water quality in the Wadaslintang Reservoir in Indonesia

75%

Piranti A. S., Wibowo D. N., Piranti A. S., Wibowo D. N.

Journal of Water and Land Development

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2020

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issue 46

7

α-Carotene and its derivatives have a sole chirality in phototrophic organisms?

75%

Takaichi S., Murakami A., Mochimaru M., Yokoyama A.

Acta Biochimica Polonica

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2012

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vol. 59

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issue 1

159-161

EN

Carotenoids in eukaryotic phototrophic organisms can be classified into two groups; β-carotene and its derivatives, and α-carotene and its derivatives. We re-examined distribution of α-carotene and its derivatives among various taxa of aquatic algae (17 classes) and land plants. α-carotene and its derivatives were found from Rhodophyceae (macrophytic type), Cryptophyceae, Euglenophyceae, Chlorarachniophyceae, Prasinophyceae, Chlorophyceae, Ulvophyceae, Charophyceae, and land plants, while they could not be detected from Glaucophyceae, Rhodophyceae (unicellular type), Chryosophyceae, Raphidophyceae, Bacillariophyceae, Phaeophyceae, Xanthophyceae, Eustigmatophyceae, Haptophyceae, and Dinophyceae. We also analyzed the chirality of α-carotene and/or its derivatives, such as lutein and siphonaxanthin, and found all of them had only (6'R)-type, not (6'S)-type.

8

Use of Algae in Active Biomonitoring of Surface Waters

75%

Rajfur M., Kłos A.

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issue 4

561-576

EN

Biomonitoring studies have been carried out in three retention reservoirs located in the Opole Province (southern Poland): Turawa reservoir, Nysa reservoir and Otmuchow reservoir. The increases of concentrations of Mn, Fe, Cu, Zn, Cd and Pb in fresh water algae Spirogyra sp. and sea water Palmaria palmata (Linnaeus) Weber & Mohr, exposed in the analysed waters, were determined by the atomic absorption spectrometry method (AAS). Also the waters pH, conductivity and Mn and Fe concentrations were determined. The concentrations of Cu, Zn, Cd and Pb in the analysed waters were lower than the method limit of determination. The analyses were carried out during the period from June to July 2014. The differences between the increases of heavy metal concentrations in the samples of algae found along the coastline were indicated; they result from different distances from the pollution sources, such as sediments or drainage from the areas adjacent to the reservoirs. Better sorption characteristics of Palmaria palmata in comparison to Spirogyra sp. were indicated. An empirical interrelation was also tested, the application of which after modification may enable the quantitative assessment of waters pollution with heavy metals, based on the analysis of the concentration of the element in the algae thallus.

9

Translocation of Cations During Sorption of Copper in the System Solution - Algae (Spirogyra sp.)/Translokacja Kationów Podczas Procesu Sorpcji Miedzi W Układzie Roztwór - Glony (Spirogyra Sp.)

63%

Rajfur M., Kłos A., Kříž J.

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issue 3

425-433

EN

Kinetics of the sorption of copper cations in Spirogyra sp. algae was analysed, together with the accompanying processes of hydrogen cations sorption and releasing to the solution the cations bonded in the algae: Na+, Mg2+, K+ and Ca2+. It was established that, in a static system, at the fixed proportion of algae mass to the solution volume, these processes occur simultaneously, however presumably the quantity of the released salts influences the parameters of heterophase equilibrium of ion exchange. In the experiment conditions, the quantity of the released cations was nearly 10 times larger than the quantity of the sorbed cations. The equilibrium parameters, determined from the model of pseudo second order reaction, were compared with the parameters obtained after 30 min of the process duration, ie at relatively stable indications of measuring equipment. On the example of the sorbed copper, the difference is approximately 8%. It was confirmed that the solution conductivity is a good parameter for the estimation of the state close to equilibrium.

PL

Zbadano kinetykę procesu sorpcji kationów miedzi w glonach Spirogyra sp. oraz towarzyszące mu procesy sorpcji kationów wodorowych i procesy uwalniania do roztworu kationów związanych w glonach: Na+, Mg2+, K+ i Ca2+. Stwierdzono, że w układzie statycznym, przy stałym stosunku masy glonów do objętości roztworu, procesy te zachodzą równocześnie, przy czym należy przypuszczać, że ilość uwalnianych soli ma wpływ na parametry heterofazowej równowagi wymiany jonowej. W warunkach prowadzenia eksperymentu ilość uwolnionych kationów była blisko 10-krotnie większa niż ilość kationów sorbowanych. Porównano parametry równowagi wyznaczone z modelu reakcji pseudo-drugiego rzędu z parametrami uzyskanymi po 30 min trwania procesu, to jest przy względnie stałych wskazaniach przyrządów pomiarowych. Różnica na przykładzie sorbowanej miedzi wynosi ok. 8%. Stwierdzono, że dobrym parametrem do szacowania stanu bliskiemu stanowi równowagi jest konduktywność roztworu.

10

Chemism of some species of Antarctic macroalgae of the genera Adenocystis, Himantothallus, Leptosomia and Monostroma

63%

Czerpak R., Mical A., Gutkowski R., Siegień I., Jackiewicz I., Czerpak R., Mical A., Gutkowski R., Siegień I., Jackiewicz I.

Polish Polar Research

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1981

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vol. 2

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issue 3-4

11

Algae - Heavy Metals Biosorbent / Glony - Biosorbent Metali Ciężkich

63%

Rajfur M.

Ecological Chemistry and Engineering S

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2013

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vol. 20

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issue 1

23-40

EN

The publication is a synthetic collection of information on the sorption properties of marine and freshwater algae. Kinetics and sorption equilibrium of heavy metals in algae-solution system, influence of abiotic factors on the process of sorption and desorption of analytes from biomass are discussed. In paper the results of laboratory tests conducted using different species and types of algae, which purpose was to assess their usefulness as natural sorbents, are described. The conclusions drawn from current research confirm the results from literature.

PL

Publikacja jest syntetycznym zbiorem informacji dotyczących właściwości sorpcyjnych glonów morskich i słodkowodnych. Omówiono kinetykę i równowagi sorpcji metali ciężkich w układzie glony - roztwór, wpływ czynników abiotycznych na proces sorpcji i desorpcji analitów z biomasy. Przedstawiono wyniki badań laboratoryjnych prowadzonych z wykorzystaniem różnych gatunków i rodzajów glonów, których celem była ocena ich przydatności jako naturalnych sorbentów. Analizę wyników badań omówionych w cytowanej literaturze poparto wnioskami z badań własnych.

Refine search results

Seaweed extract by microwave assisted extraction as plant growth biostimulant

Patchiness of sympagic algae and meiofauna from the fast ice of North Open Water (NOW) Polynya

Relationship of cyanobacterial and algal assemblages with vegetation in the high Arctic tundra (West Spitsbergen, Svalbard Archipelago)

Freshwater mineral nitrogen and essential elements in autotrophs in James Ross Island, West Antarctica

Phytoplankton of the Olaf Prydz Bay (Indian Ocean, East Antarctica) in February 1969

The use of phytoplankton communities for assessment of water quality in the Wadaslintang Reservoir in Indonesia

α-Carotene and its derivatives have a sole chirality in phototrophic organisms?

Use of Algae in Active Biomonitoring of Surface Waters

Translocation of Cations During Sorption of Copper in the System Solution - Algae (Spirogyra sp.)/Translokacja Kationów Podczas Procesu Sorpcji Miedzi W Układzie Roztwór - Glony (Spirogyra Sp.)

Chemism of some species of Antarctic macroalgae of the genera Adenocystis, Himantothallus, Leptosomia and Monostroma

Algae - Heavy Metals Biosorbent / Glony - Biosorbent Metali Ciężkich