• There are two methods for finding fibre % cane
• (A) Direct Method
• (B) Indirect Method •
• Direct Method :-
(1) Laboratory Method :-
• In this method a few cane sticks are taken & some portion of cane is shredded or cut into fine pieces by means of a laboratory shredder.
• A sample of shredded cane is weighed and dried in air over to determine moisture % cane. • The remaining cane sticks are crushed into laboratory mill or crusher and brix of the juice so extracted is determined. • From these figs ,fibre ,cane is determined as follows. •
• (2) By Rapi – pol Extractor – Method :-
• The sugar cane sticks are cut into fine pieces.
• 250 gms of this sample along with 2000 ml water is transferred to rapi-pol vessel.
• Run the Rapi-pol extractor for 15 mints .
• Decant the whole liquid from vessel.
• Repeat the same above procedure for 2 or 3 times. Then take out the fibrous mass from vessel .
• after well squeezing with hand & dry the fibrous mass completely in drier and weigh it. The fibre % cane will be calculated as,
• Fibre%cane= Weight of the fibrous massx100/250 •
•Indirect Method:-
• Laboratory Method:-
Crush the weighed cane in a laboratory mill. Determine the wt. of juice extracted and analyse the juice for Brix %, Pol % & Purity. Bagasse is also analyzed for Pol % & moisture % as usual.
• From there analytical results fibre % cane is calculated as under - •
•Bagasse % cane = wt.of cane –wt.of juice extracted x 100
• Wt.of the cane •Brix % Bag. = Pol % bagx 100
• Pty of extracted juice •Fibre % Bag = 100 – Moist. % Bag – Brix % Bag.
•Fibre % cane = Fibre in bag. % cane
•Fibre % cane = fibre % Bag. X Bag. % cane • 100 •
• But ,in the factory ,fibre % cane is determined as follows
• Cane + A.W. = Mixed juice + Bagasse • 100 + A.W. % cane = M.J. % cane + Bag. % cane
• Bag. % cane = 100+A.W.%cane – M.J.% cane
• Fibre % cane = 100 – moist. % Bag – Brix % Bag
• Brix % Bag = Pol % Bag.x100/Purity LMJ
• Fibre % cane = fibre % Bag. x Bag. % cane 100
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