Syrup Clarification for Plantation White Sugar to meet New Quality Standards

Steindl, Roderick J. (2005) Syrup Clarification for Plantation White Sugar to meet New Quality Standards. In Hogarth, D.M. (Ed.) XXV Congress of International Society of Sugar Cane Technologists, 30 January - 4 February 2005, Guatemala, Guatemala City.


There is significant interest in many sugar producing countries towards producing a higher quality plantation white or direct consumption sugar with lower colour and lower residual sulfur dioxide levels. National standards for residual sulfur dioxide and colour have been lowered to reflect the growing demand for improved quality and concerns for health risks.

Investigations at SRI have focused on identifying optimum conditions for clarification options to remove scale components, colour and other impurities by clarifying intermediate and final effect syrups. Trials in two Australian factories demonstrated the benefits for improved sugar quality and productivity improvements for the pan and centrifugal stages.

Recent investigations in four overseas countries have focused on the application of syrup clarification with or without syrup sulfitation to achieve compliance with the changing standards.

Results show that syrup clarification technology can be used to achieve lower sugar colours and reduced residual sulfur dioxide. In one case where syrup clarification was used in conjunction with syrup sulfitation, the colour of the product sugar was reduced from about 150 IU to below 100 IU. In another case, the colour of the sugar was reduced from 150 IU down to 120 IU by replacing the syrup sulfitation process with syrup clarification. In the latter case, residual sulfur dioxide values were reduced from about 25 ppm down to about 14 ppm. There are other advantages to be derived from clarification of the raw syrup, including reduced turbidity and lower ash. A reduction in viscosity has provided productivity gains for the pan and centrifugal stations.

Impact and interest:

4 citations in Scopus
Search Google Scholar™
5 citations in Web of Science®

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

6,983 since deposited on 31 Aug 2006
896 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 4888
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: Flocculant, Clarification, Flotation, Colour, Sugar Quality
Divisions: Current > QUT Faculties and Divisions > Division of Research and Commercialisation
Copyright Owner: Copyright 2005 (please consult author)
Deposited On: 31 Aug 2006 00:00
Last Modified: 29 Feb 2012 13:15

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page