The composition of sugarcane juices dervied from burnt cane and whole green cane crop

Thai, Caroline C.D. & Doherty, William O.S. (2011) The composition of sugarcane juices dervied from burnt cane and whole green cane crop. In Bruce, Robin (Ed.) Proceedings of the 33rd Annual Conference of the Australian Society of Sugar Cane Technologists 2011, Curran Associates, Inc., Mackay, Qld., pp. 368-376.

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There has been substantial interest within the Australian sugar industry in product diversification as a means to reduce its exposure to fluctuating raw sugar prices and in order to increase its commercial viability. In particular, the industry is looking at fibrous residues from sugarcane harvesting (trash) and from sugarcane milling (bagasse) for cogeneration and the production of biocommodities, as these are complementary to the core process of sugar production. A means of producing surplus residue (biomass) is to process whole sugarcane crop. In this paper, the composition of different juices derived from different harvesting methods, viz. burnt cane with all trash extracted (BE), green cane with half of the trash extracted (GE), and green cane (whole sugarcane crop) with trash unextracted (GU), were investigated and the results and comparison presented. The determination of electrical conductivity, inorganic composition, and organic acids indicate that both GU and GE cane juice contain a higher proportion of soluble inorganic ions and ionisable organic acids, compared to BE cane juice. It is important to note that there are considerably higher levels of Na ions and citric acid, but relatively low P levels in the GU samples. A higher level of reducing sugars was analysed in the GU samples than the BE samples due to the higher proportion of impurities found naturally in sugarcane tops and leaves. The purity of the first expressed juice (FEJ) of GU cane was on average higher than that of FEJ of BE cane. Results also show that GU juices appear to contain higher levels of proteins and polysaccharides, with no significant difference in starch levels.

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ID Code: 50296
Item Type: Conference Paper
Refereed: Yes
Keywords: Whole Sugarcane Crop, Trash, Juice Composition, Clarification, Sugar Quality, Burnt Cane Juice
ISBN: 9781617829215
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300) > Chemical Characterisation of Materials (030301)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > OTHER CHEMICAL SCIENCES (039900) > Industrial Chemistry (039903)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2011 The authors.
Copyright Statement: A release form was signed and submitted by the authors to the editor of the publishing company.
Deposited On: 22 May 2012 05:29
Last Modified: 28 Feb 2015 11:59

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