Lynne Wong's PhD thesis

0.6
y = 0.030 (% D) R 2 = 0.98
= 0.004 (% G) R 2 = 0.60
= - 0.006 (% T) R 2 = 0.37
D
0.2
G
T
-0.2
0 5 10 15 20
% EM in cane
Figure 2.11. Changes in sucrose in bagasse % cane due to dry trash (D), green leaves (G) and cane tops (T).
2.1.6.3 Mixed juice quality
The decrease in mixed juice Clerget purity by the different kinds of extraneous matter
studied appears to be more or less the same (Fig 2.12). The same applies to the ash content
in mixed juice (Fig 2.13). However, the increase in reducing sugars, namely fructose and
glucose, in mixed juice is most pronounced in the case of cane tops (Fig 2.14).
As shown in Fig 2.12, each 1% increase in dry trash causes a decrease in mixed juice
Clerget purity of 0.26 unit; for green leaves and cane tops, it is 0.25 and 0.29 respectively.
This concurs well with the findings of factory trials performed by other workers. For 1%
increase in trash, the decrease in mixed juice purity found in South Africa by Reid and
Lionnet (1989) was 0.43, and in Australia, 0.30 and 0.27 by Kent et al. (1999, 2003).
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