Table 2 Effect of composition of blanching solution on the physicochemical and sensory properties of frozen Aster scaber

Properties Water 1% NaCl Sucrose concentration p
1% 2% 3%
Physicochemical properties
 Weight loss (%) 17.1±0.60b 18.9±4.74b 19.2±0.99b 19.9±0.89b 24.7±1.14a 0.022
 Moisture (%) 91.9±1.46 94.2±0.26 92.9±1.86 92.6±0.64 90.6±2.53 0.154
 Shear force (leaf, N) 11.6±0.44c 12.5±1.95c 14.3±1.86bc 15.6±2.08ab 17.7±0.34a 0.005
 Shear force (stem, N) 10.8±2.98b 10.4±5.13b 18.1±5.46ab 19.9±4.86ab 22.6±7.20a 0.050
 CIE L* 31.9±1.17 29.6±2.40 31.3±2.15 33.3±2.90 33.1±0.93 0.246
 CIE a*,1) 9.29±0.76a 4.18±2.63b 9.24±0.52a 8.38±0.45a 9.70±0.93a 0.003
CIE b* 15.9±2.62 14.7±3.28 13.3±2.34 14.4±2.04 16.9±1.46 0.457
Sensory properties
 Appearance 3.61±0.83 3.58±1.03 3.59±0.92 3.49±1.05 3.62±0.87 0.999
 Color 3.33±0.54 2.74±0.66 3.28±0.94 3.16±1.03 3.46±0.62 0.429
 Off-flavor 3.11±0.99 2.78±0.54 2.83±0.68 3.03±0.82 3.24±0.65 0.302
 Texture 3.26±0.88 3.44±0.85 3.37±0.66 3.56±0.63 3.22±0.84 0.688
Mean±SD
All values were expressed as absolute values as an indicator of greenness.
Means with different superscript within same row are significantly different (p<0.05).