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Values of the acetylation degree (DA), the deacetylation degree (DD) the acylation degree (DA, ) of acylated part, the total acylation degree (DAc), the molar mass average c chitosane monomer (Mm) and the concentration of free amino groups [-NH2] of chitosan and its derivatives regarding to this work. Table 3

Table 3 Values of the acetylation degree (DA), the deacetylation degree (DD) the acylation degree (DA, ) of acylated part, the total acylation degree (DAc), the molar mass average c chitosane monomer (Mm) and the concentration of free amino groups [-NH2] of chitosan and its derivatives regarding to this work. Table 3

Related Figures (7)

Fig. 1. FA or EF concentration in phosphate buffer (50 mM, pH 7.5) containing FA or EF + chitosan +laccase ((), FA or EF+ laccase without chitosan (@), FA or EF+ chitosan without laccase (control) (A) at 30°C. Results from triplicate experiments.
Fig. 1. FA or EF concentration in phosphate buffer (50 mM, pH 7.5) containing FA or EF + chitosan +laccase ((), FA or EF+ laccase without chitosan (@), FA or EF+ chitosan without laccase (control) (A) at 30°C. Results from triplicate experiments.
Each value is expressed as mean + standard deviation (n= 3). Color parameters (a*, b* and L*) and color difference (AE) of chitosan and its derivatives particles. Table 1
Each value is expressed as mean + standard deviation (n= 3). Color parameters (a*, b* and L*) and color difference (AE) of chitosan and its derivatives particles. Table 1
Fig. 2. UV/visible spectra for chitosan (i), chitosan control with laccase (CD), chitosan control with FA (a), chitosan control with EF (A), FA-chitosan derivative (), EF- chitosan derivative (@), and after washing with different solvents, chitosan samples were dissolved at 0.5% (w/v) in aqueous acetic acid 1% (pH 3) and then filtrated prior to measuring the spectra.
Fig. 2. UV/visible spectra for chitosan (i), chitosan control with laccase (CD), chitosan control with FA (a), chitosan control with EF (A), FA-chitosan derivative (), EF- chitosan derivative (@), and after washing with different solvents, chitosan samples were dissolved at 0.5% (w/v) in aqueous acetic acid 1% (pH 3) and then filtrated prior to measuring the spectra.
Fig. 3. FT-IR spectra (A) and amide | band (B) of chitosan (a), EF-chitosan derivative (b) and FA-chitosan derivative (c).
Fig. 3. FT-IR spectra (A) and amide | band (B) of chitosan (a), EF-chitosan derivative (b) and FA-chitosan derivative (c).
Fig. 4. (A) '7C NMR spectrum of chitosan (a), FA-chitosan derivative (b) and EF- chitosan derivative (c). (B) '3C NMR spectrum of chitosan hydration (a), FA-chitosan derivative hydration (b) and EF-chitosan derivative hydration (c).
Fig. 4. (A) '7C NMR spectrum of chitosan (a), FA-chitosan derivative (b) and EF- chitosan derivative (c). (B) '3C NMR spectrum of chitosan hydration (a), FA-chitosan derivative hydration (b) and EF-chitosan derivative hydration (c).
ECso values of chitosan and its derivatives in antioxidant properties.
ECso values of chitosan and its derivatives in antioxidant properties.
Fig. 5. Reducing activity of FA-chitosan derivative (A), EF-chitosan derivative (0) and chitosan (()). Each value is expressed as mean + standard deviation (n= 3). ECso value corresponds to the effective concentration necessary at which the antioxidant activity was 50%, ECso values were obtained by interpolation from linear regression analysis. Each value is expressed as mean + standard deviation (n= 3).
Fig. 5. Reducing activity of FA-chitosan derivative (A), EF-chitosan derivative (0) and chitosan (()). Each value is expressed as mean + standard deviation (n= 3). ECso value corresponds to the effective concentration necessary at which the antioxidant activity was 50%, ECso values were obtained by interpolation from linear regression analysis. Each value is expressed as mean + standard deviation (n= 3).
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