The Antibacterial Activity of Chitosan Products Blended with Monoterpenes and Their Biofilms against Plant Pathogenic Bacteria

Table 2

Physicochemical properties of the modified chitosan film with geraniol and thymol.

Film	Dry weight (g) ± SE	Thickness (mm) ± SE	WVP (g/m^2·d) ± SE	Antioxidant activity	Swelling index at time (h)
					0.5	2.5	4	24
Ch/starch	0.150 ± 0.01	0.068 ± 0.01	40.12 ± 8.87	0.173 ± 0.01	0.85	1.36	2.14	1.15
Ch/starch + 0.1% G	0.206 ± 0.01	0.104 ± 0.01	48.88 ± 1.65	0.182 ± 0.02	1.75	4.27	4.69	5.10
Ch/starch + 0.5% G	0.208 ± 0.01	0.107 ± 0.01	70.49 ± 5.48	0.186 ± 0.06	1.93	4.69	4.85	5.34
Ch/starch + 0.1% T	0.217 ± 0.00	0.114 ± 0.01	36.48 ± 1.53	0.188 ± 0.08	3.35	3.81	3.89	3.96
Ch/starch + 0.5% T	0.231 ± 0.00	0.124 ± 0.01	29.76 ± 3.29	0.192 ± 0.08	1.44	2.25	3.38	2.97

Ch: chitosan; G: geraniol; T: thymol.
WVP: water vapor permeability.
Antioxidant activity expressed as mg equivalents of ascorbic acid equivalent per g of film ± SE.
Different letters in the same column indicate significant differences according to the Student-Newman-Keuls (SNK) test (). Values are the mean of five replicates and are given as mean ± standard error.