Losses of sugar due to growth of microorganisms are considered to be occurring only during milling, and are judged on the basis of incorrect method of Purity Drop. Obvious sampling errors in collecting primary juice make the proper evaluation further difficult. Thus use of chemicals for mill sanitation not evaluated properly, this have led to overall confusion and use of improper chemicals for mill sanitation. Mill sanitation 'biocide' should have ability to kill 90% bacteria in cane juice within 10 minutes at low dose say 10 ppm, and only such chemical would be able to save microbial losses of sugar throughout the process and would yield economic benefits to the factory. Polmax ESR, chemical formulation having ability to kill 90% bacteria in cane juice within 10 minutes at 10 ppm dose, have been found to exert effect up to analysis of final molasses. Reducing sugars per 100 brix as well as acidity by titration per 100 brix of PJ, MJ, CI.J, Syrup and final molasses were used for proper evaluation. Use of such biocide reduces rise in reducing sugars as well as titratable acidity at every stage. Tiratable acidity of final molasses could be considered as most appropriate method of evaluation of sugar losses. Data of one sugar factory will be presented.
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