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Publisert 2022

Les på engelsk

Publikasjonsdetaljer

Tidsskrift : Molecules , vol. 27 , 2022

Utgiver : MDPI

Internasjonale standardnummer :
Trykt : 1420-3049
Elektronisk : 1420-3049

Publikasjonstype : Vitenskapelig artikkel

Bidragsytere : Sharmin, Nusrat; Rosnes, Jan Thomas; Prabhu, Leena Amit; Böcker, Ulrike; Sivertsvik, Morten

Sak : 16

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Kjetil Aune
Bibliotekleder
kjetil.aune@nofima.no

Sammendrag

In this study, acetic acid (AA-2% w/v), a combination of acetic acid and citric acid
(AA-1% w/v + CA-1% w/w), and three different concentrations of citric acid (CA-2, 4 and 6%
w/w) were used to create chitosan solution. The FTIR analysis showed the presence of residual CA
in all the CA-containing samples where no trace of AA was observed. The tensile strengths of the
CA-containing samples were lower than the AA samples. Whereas the values for the elongation at
break of the CA samples were higher than the AA samples, which kept increasing with an increasing
CA content due to the plasticizing effect from residual citric acid. The elongation at break values for
4 and 6% CA-containing samples were 98% higher than the AA samples. The samples prepared with
CA showed shorter LVE regions that reduced with an increasing CA concentration compared to the
AA samples. Different acid concentrations did not have a large effect on the gelation time. However,
CA-containing samples showed higher viscosities as compared to the AA-containing solution, which
increased with an increasing CA content. The water vapour transmission rates of the CA-containing
samples were lower than the others. All the chitosan solutions suppressed the growth of the two test
strains, and none of the variants reached an abs 600 nm at 0.2.

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