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Optimisation of process parameters for the removal of hydroxycinnamic acids in sugar solutions

Nguyen, Danny M.T. & Doherty, William O.S. (2012) Optimisation of process parameters for the removal of hydroxycinnamic acids in sugar solutions. In Bruce, Robin C. (Ed.) Proceedings of the Australian Society of Sugar Cane Technologists 2012, Australian Society of Sugar Cane Technologists, Novotel Rockford Resort, Palm Cove, QLD.

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Abstract

Colour is one of the most important parameters in sugar quality and its presence in raw sugar plays a key role in the marketing strategy of sugar industries worldwide. This study investigated the degradation of a mixture of colour precursors using the Fenton oxidation process. These colour precursors are caffeic acid, p–coumaric acid and ferulic acid, which are present in cane juice. Results showed that with a Fe(II) to H2O2 molar ratio of 1:15 in an aqueous system at 25 °C, 77% of the total phenolic acid content was removed at pH 4.72. However, in a synthetic juice solution which contained 13 mass % sucrose (35 °C, pH 5.4), only 60% of the total phenolic acid content was removed.

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ID Code: 50485
Item Type: Conference Paper
Additional Information: A release form was signed by both authors and submitted to the editor of the Publishing company.
Subjects: Australian and New Zealand Standard Research Classification > MATHEMATICAL SCIENCES (010000) > STATISTICS (010400) > Applied Statistics (010401)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > ANALYTICAL CHEMISTRY (030100) > Separation Science (030108)
Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Solution Chemistry (030605)
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 2012 The Authors & Queensland University fo Technology
Deposited On: 22 May 2012 08:12
Last Modified: 27 Jan 2013 10:26

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