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Pregled bibliografske jedinice broj: 601830

Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater


Strmečki Kos, Slađana; Plavšić, Marta
Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater // Book of Abstracts / Fojta, M., Navratil, T., Pivonkova, H. (ur.).
Brno, Czech Republic, 2012. str. O-50 (predavanje, međunarodna recenzija, sažetak, znanstveni)


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Naslov
Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater

Autori
Strmečki Kos, Slađana ; Plavšić, Marta

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / Fojta, M., Navratil, T., Pivonkova, H. - Brno, Czech Republic, 2012, O-50

ISBN
978-80-87541-03-6

Skup
45th Heyrovsky Discussion: Electrochemistry of Biopolymers and Bioactive Compounds

Mjesto i datum
Brno, Češka Rapublika, 13-17.08.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Carrageenans; Chronopotentiometric stripping; Peak H; Seawater

Sažetak
Sulphated polysaccharides (S-PS) are a “presodium” catalyst of hydrogen evolution on mercury electrode in a buffered solution. Chronopotentiometric stripping (CPS) method detects two peaks named peak H'PS (more negative one) and peak HPS (less negative one) as a result of catalytic hydrogen evolution. It is not possible to detect peaks H directly in seawater. An ex situ procedure of adsorptive transfer (AdT) is applied to transfer adsorbed S-PS from seawater (pH 8.2) to the buffered solution (pH 5.1) where chronopotentiometric stripping and detection of catalytic peaks was possible (Fig.1) Sulphated galactans carrageenans differ in sulphate content and in the presence of the 3, 6- anhydro-D- galactose, which both influence their conformation in water solution. A static mercury drop electrode having drop size 0.40 and 0.52 mm2 was a working electrode. The catalytic peak HPS of κ-, ι-, and λ- carrageenan in seawater was examined at different experimental conditions using AdT procedure coupled with constant current chronopotentiometric stripping and detection. The relation of κ-, ι-, and λ-carrageenan structure and conformation with obtained AdT CPS results was interpreted.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekti:
098-098-2934-2717

Ustanove:
Institut "Ruđer Bošković", Zagreb

Profili:

Avatar Url Slađana Strmečki Kos (autor)

Avatar Url Marta Plavšić (autor)


Citiraj ovu publikaciju:

Strmečki Kos, Slađana; Plavšić, Marta
Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater // Book of Abstracts / Fojta, M., Navratil, T., Pivonkova, H. (ur.).
Brno, Czech Republic, 2012. str. O-50 (predavanje, međunarodna recenzija, sažetak, znanstveni)
Strmečki Kos, S. & Plavšić, M. (2012) Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater. U: Fojta, M., Navratil, T., Pivonkova, H. (ur.)Book of Abstracts.
@article{article, year = {2012}, pages = {O-50}, keywords = {Carrageenans, Chronopotentiometric stripping, Peak H, Seawater}, isbn = {978-80-87541-03-6}, title = {Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater}, keyword = {Carrageenans, Chronopotentiometric stripping, Peak H, Seawater}, publisherplace = {Brno, \v{C}e\v{s}ka Rapublika} }
@article{article, year = {2012}, pages = {O-50}, keywords = {Carrageenans, Chronopotentiometric stripping, Peak H, Seawater}, isbn = {978-80-87541-03-6}, title = {Ex situ Chronopotentiometric Stripping of Sulphated Polysaccharides κ-, ι-, and λ- carrageenan in Seawater}, keyword = {Carrageenans, Chronopotentiometric stripping, Peak H, Seawater}, publisherplace = {Brno, \v{C}e\v{s}ka Rapublika} }




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