Effect of cane sugar juice composition on scaling rate and scale composition in sugar mills. The Australia sugar industry produces 1100 GWh of renewable electricity annually, abating ~1.1 M tonnes of CO2-equivalent of greenhouse gases. This can be increased if the juice evaporation performance, which largely determines the energy efficiency of the sugar factory, can be improved through reduced fouling of evaporators. This project will investigate the effect of juice composition on fouling of sug ....Effect of cane sugar juice composition on scaling rate and scale composition in sugar mills. The Australia sugar industry produces 1100 GWh of renewable electricity annually, abating ~1.1 M tonnes of CO2-equivalent of greenhouse gases. This can be increased if the juice evaporation performance, which largely determines the energy efficiency of the sugar factory, can be improved through reduced fouling of evaporators. This project will investigate the effect of juice composition on fouling of sugar factory evaporators so that a model to predict scale type and scale propensity can be developed. This will enable the development of better scale control strategies, resulting in reduced energy usage and reduced usage of the hazardous and polluting chemicals required to remove scale.Read moreRead less
Dietary sugarcane-derived polyphenols reduce obesity. The Australian Sugar Industry is a billion dollar industry with refined sugar being calorie-rich but nutrition poor. Consumption of refined sugar is a main contributor to the increasing problem of obesity and metabolic syndrome, costing the Australian health system billions of dollars annually. The principal outcomes of this project will be to show that the polyphenols contained in the waste products from sugar refining can be used to reduce ....Dietary sugarcane-derived polyphenols reduce obesity. The Australian Sugar Industry is a billion dollar industry with refined sugar being calorie-rich but nutrition poor. Consumption of refined sugar is a main contributor to the increasing problem of obesity and metabolic syndrome, costing the Australian health system billions of dollars annually. The principal outcomes of this project will be to show that the polyphenols contained in the waste products from sugar refining can be used to reduce body fat and insulin resistance. These outcomes have enormous implications for human health and disease, and for the sugar industry, thus providing a competitive edge in the world sugar market.Read moreRead less
Modification of lignin biosynthesis in sugarcane for the improved efficiency of pre-treatment in ethanol production. Sugarcane is one of Australia's most important rural industries. However, as a single product industry, declining sugar prices threaten the industry's long term economic sustainability unless alternative markets for sugarcane are created. Utilising the sugarcane waste for cellulosic ethanol would provide a new revenue stream, injecting life into the Australian sugarcane industry. ....Modification of lignin biosynthesis in sugarcane for the improved efficiency of pre-treatment in ethanol production. Sugarcane is one of Australia's most important rural industries. However, as a single product industry, declining sugar prices threaten the industry's long term economic sustainability unless alternative markets for sugarcane are created. Utilising the sugarcane waste for cellulosic ethanol would provide a new revenue stream, injecting life into the Australian sugarcane industry. In addition, cellulosic ethanol from sugarcane has the potential to substantially decrease the cost of biofuel production and significantly reduce greenhouse gas emissions. The research proposed here will advance our ability to improve sugarcane through biotechnology.Read moreRead less
Understanding an exotic disease: Initiation of sex and infection by the sugarcane smut Ustilago scitaminea. Australian sugar exports generate almost $2 billion in annual sales, making the sugar industry a critical facet of the Australian economy. In 2006, Australia's primary sugar producing region came under threat when an outbreak of sugarcane smut caused by the fungus Ustilago scitaminea first appeared in Queensland. Management of this potentially devastating disease has focused on breeding pr ....Understanding an exotic disease: Initiation of sex and infection by the sugarcane smut Ustilago scitaminea. Australian sugar exports generate almost $2 billion in annual sales, making the sugar industry a critical facet of the Australian economy. In 2006, Australia's primary sugar producing region came under threat when an outbreak of sugarcane smut caused by the fungus Ustilago scitaminea first appeared in Queensland. Management of this potentially devastating disease has focused on breeding programmes aimed at developing resistant sugarcane cultivars, a complex process hampered by a lack of information about the mechanisms of smut resistance. Our research will provide key insight into the mechanisms by which U. scitaminea infects sugarcane, directing future breeding efforts and protecting this valuable industry against further outbreaks.Read moreRead less
Sustainable dollar notes and other polypropylenes from bioderived feedstocks. Fossil fuels provide us with the essential chemicals for our life style. The chemical industry recognizes limited supply and a need to reduce carbon emissions. Microbes are able to supply green chemicals (e.g. bio-ethanol), but efficiencies are often low. This project will develop microbes for the fermentative production of plastics from cane sugar.
Metabolic engineering of sugarcane: production of a biodegradable bioplastic as a test-case. The aim of this project is to produce a commercially valuable bioplastic called PHB in transgenic sugarcane. This bioplastic has similar properties to petrochemically produced polypropylene, but is fully biodegradable. PHB has been produced in the model plant Arabidopsis thaliana at commercially viable levels. The expected outcome of high-level production of PHB in sugarcane would have significant ben ....Metabolic engineering of sugarcane: production of a biodegradable bioplastic as a test-case. The aim of this project is to produce a commercially valuable bioplastic called PHB in transgenic sugarcane. This bioplastic has similar properties to petrochemically produced polypropylene, but is fully biodegradable. PHB has been produced in the model plant Arabidopsis thaliana at commercially viable levels. The expected outcome of high-level production of PHB in sugarcane would have significant benefits to the Australian sugar industry, the rural economy, and the Australian environment.Read moreRead less
Genetic variation in the Cotesia flavipes complex of parasitic wasps: towards the effective biological control of stem-borer pests. This project will determine the genetic variation among world populations of the parasitic wasp Cotesia flavipes, as a prelude to the preemptive biological control of stemborer pests of sugarcane in Australia. These pests currently do not occur in Australia, but are found in crops across New Guinea and Indonesia, so that their incursion into Australia is highly lik ....Genetic variation in the Cotesia flavipes complex of parasitic wasps: towards the effective biological control of stem-borer pests. This project will determine the genetic variation among world populations of the parasitic wasp Cotesia flavipes, as a prelude to the preemptive biological control of stemborer pests of sugarcane in Australia. These pests currently do not occur in Australia, but are found in crops across New Guinea and Indonesia, so that their incursion into Australia is highly likely in the future. The results of this project will clarify the taxonomic status of C. flavipes-like species in Australia and provide the means, using molecular markers, to select host strains of this wasp suitable for the control of specific stemborer speciesRead moreRead less
Phylogeography and host specificity of stemborer parasitoids: essential components for the pre-emptive biocontrol of sugarcane pests in Australia. Stemboring insects cause huge economic losses to the sugar industry world-wide but fortunately these pests are largely absent from Australia, in part because quarantine measures have prevented their introduction. However, given their proximity, incursion of foreign stemborers from Asia pose a serious threat to Australian sugarcane. To prepare effectiv ....Phylogeography and host specificity of stemborer parasitoids: essential components for the pre-emptive biocontrol of sugarcane pests in Australia. Stemboring insects cause huge economic losses to the sugar industry world-wide but fortunately these pests are largely absent from Australia, in part because quarantine measures have prevented their introduction. However, given their proximity, incursion of foreign stemborers from Asia pose a serious threat to Australian sugarcane. To prepare effective pest management plans that can be adopted promptly in a worst-case scenario, this study will 1) develop molecular diagnostic tools to select wasp biocontrol agents that are suitable for the control of specific foreign stemborer pests, and 2) evaluate whether any Australian native wasps have the ability to kill foreign stemborers. Read moreRead less
Enhanced biocontrol options for the Australian sugar industry: a proteomic approach. Sugarcane is the second largest field crop grown in Australia and raw sugar is the third largest export product. Canegrubs are the major insect pest affecting production of sugarcane in Australia, currently costing the industry more than $12 million annually in insecticides and lost production. Biological control of insect pests provides an environmentally sound option of reducing these losses. Here we propos ....Enhanced biocontrol options for the Australian sugar industry: a proteomic approach. Sugarcane is the second largest field crop grown in Australia and raw sugar is the third largest export product. Canegrubs are the major insect pest affecting production of sugarcane in Australia, currently costing the industry more than $12 million annually in insecticides and lost production. Biological control of insect pests provides an environmentally sound option of reducing these losses. Here we propose to use proteomics to identify the key pathogenicity determinants in the biological control fungus Metarhizium during infection of canegrubs. The genes and proteins identified in this project will contribute to developing enhanced biocontrol options for Australian sugar industry.Read moreRead less
Effect of cane sugar juice composition on scaling rate and scale composition in sugar mills. The Australia sugar industry produces 1100 GWh of renewable electricity annually, abating ~1.1 M tonnes of CO2-equivalent of greenhouse gases. This can be increased if the juice evaporation performance, which largely determines the energy efficiency of the sugar factory, can be improved through reduced fouling of evaporators. This project will investigate the effect of juice composition on fouling of sug ....Effect of cane sugar juice composition on scaling rate and scale composition in sugar mills. The Australia sugar industry produces 1100 GWh of renewable electricity annually, abating ~1.1 M tonnes of CO2-equivalent of greenhouse gases. This can be increased if the juice evaporation performance, which largely determines the energy efficiency of the sugar factory, can be improved through reduced fouling of evaporators. This project will investigate the effect of juice composition on fouling of sugar factory evaporators so that a model to predict scale type and scale propensity can be developed. This will enable the development of better scale control strategies, resulting in reduced energy usage and reduced usage of the hazardous and polluting chemicals required to remove scale.Read moreRead less