Lynne Wong's PhD thesis

Table 5.13. Equilibrium moisture content (on a dry basis) of dry leaf fibre from R 570 aged 52 weeks and 36 weeks at various temperatures and water activities.
30 o C 45 o C 55 o C 60 o C
Water water adsorbed Water water adsorbed Water water adsorbed Water water adsorbed
m/m of 96% activity, a w (g/100g dry fibre) activity, a w (g/100g dry fibre) activity, a w (g/100g dry fibre) activity, a w (g/100g dry fibre)
H 2SO 4 soln 52 weeks 36 weeks 52 weeks 36 weeks 52 weeks 36 weeks 52 weeks 36 weeks
5% 0.9808 26.21 28.02 0.9812 31.59 33.21 0.9816 31.65 33.21 0.9818 48.23 64.56
27.59 27.02 27.58 28.35 36.35 26.59 40.56 54.97
mean 26.90 27.52 29.59 30.78 34.00 29.90 44.40 59.77
10% 0.9746 25.49 25.58 0.9751 24.61 27.74 0.9760 26.14 25.09 0.9764 26.03 19.24
22.04 24.34 24.28 25.27 19.67 22.33 33.18 21.42
mean 23.77 24.96 24.45 26.51 22.91 23.71 29.61 20.33
20% 0.8814 16.75 17.12 0.8839 18.02 16.91 0.8868 16.94 17.13 0.8882 17.21 13.91
16.35 16.40 16.44 15.43 15.85 16.38 15.82 14.74
mean 16.55 16.76 17.23 16.17 16.40 16.76 16.52 14.33
30% 0.7549 17.51 13.29 0.7629 12.51 13.18 0.7684 14.44 12.50 0.7711 10.77 10.93
15.10 14.01 10.75 12.91 12.37 12.01 9.41 11.99
mean 16.31 13.65 11.63 13.05 13.41 12.26 10.09 11.46
40% 0.5711 10.80 8.92 0.5866 8.97 8.35 0.5948 8.58 9.73 0.5989 7.77 7.43
8.49 8.56 8.37 8.56 8.08 8.37 9.14 4.33
mean 9.65 8.74 8.67 8.46 8.33 9.05 8.46 5.88
50% 0.3574 5.98 5.97 0.3765 5.54 8.80 0.3879 5.29 5.49 0.3936 5.26 5.45
6.20 5.77 5.86 8.21 5.27 8.59 5.06 5.07
mean 6.09 5.87 5.70 8.51 5.28 7.04 5.16 5.26
60% 0.1677 4.11 4.83 0.1834 3.79 3.70 0.1937 3.73 4.08 0.1988 3.59 3.71
7.36 4.59 3.89 3.72 2.64 3.71 3.66 3.53
mean 5.74 4.71 3.84 3.71 3.19 3.90 3.63 3.62
Table 5.14. Equilibrium moisture content (on a dry basis) of dry leaf fines from R 570 aged 52 weeks and 36 weeks at various temperatures and water activities.
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