Lynne Wong's PhD thesis

% EM in cane
0 5 10 15 20
-2
T
G
-7
y = - 0.499 (% D) R 2 = 0.98
= - 0.264 (% G) R 2 = 0.98
= - 0.180 (% T) R 2 = 0.98
D
-12
Figure 2.22. Changes in overall recovery due to dry trash (D), green leaves (G) and cane tops (T).
2.1.7 Conclusions
The different effects of various kinds of extraneous matter, notably dry trash, green leaves
and cane tops, have been clearly demonstrated in the experiment.
Among the most important findings are:
• Extraneous matter, whatever its nature, serves as a diluent in direct analyses such
as pol % cane.
• Dry trash has by far a more adverse effect than green leaves or tops on juice
extraction, sugar recovery, boiling house recovery and overall recovery.
One unit of dry trash increases fibre % cane, mass of bagasse % cane and sucrose
loss in bagasse % cane and in molasses % cane by 0.57, 1.17, 0.030 and 0.011
units respectively, and decreases juice extraction and sugar recovery by 0.22 and
0.23 units, respectively.
• The detrimental effect of green leaves is intermediate between those of dry trash
and cane tops.
• Cane tops do not seem to affect fibre % cane, the mass of bagasse % cane and
juice extraction.
One unit of cane tops increases the non-sucrose level in mixed juice, which
increases the mass of molasses at 85° Brix produced % cane by 0.041 unit,
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