This is a case study of an irrigated sugar cane Estate owned by the Company that mills sugar cane from the irrigated farms that make up the Estate and also from a wide range of other suppliers. The agricultural land on which the sugar cane is grown is threatened by divestiture in that the Mill could conceivably obtain supplies from other Private Growers and other contracted suppliers who are the potential purchasers of divested land. This is the problem that the research addresses. The case study addresses this problem by analysing the relationship between a specific sugar mill and its company owned Estate which supplies cane to the Mill, from irrigated sugar cane lands. In other cane growing areas Estate operations have been divested and the cane supplies outsourced to Private Growers. The case study evaluates this management strategy in the particular case of the Heatonville irrigation Estate supplying sugar cane to the Felixton sugar mill, both of which are owned by Tongaat-Hulett Sugar Limited. In 1993 the Company had vertically integrated backwards, and invested in agricultural land in a move to secure strategic cane supplies for the Felixton Mill. The Mill was at that time, and still is, under supplied with sugar cane on an annual basis. The case study provides a review of the relevant literature in the fields of vertical integration, divestiture and outsourcing which are concepts that can be related to the actions that the Company is taking in selling off significant potions of its agricultural land holdings. An overview of the concepts of marginal cost and marginal revenue are given in order to assist in the understanding of the relationship between the sugar mill and the Company owned Estate. The research design is guided by five main research questions around which the methodology and data collection processes are focused. These research questions are all related to the research problem. Computer generated budget models are used to evaluate financial and production information, with the assistance of tables and graphs. The specific relationship that the Estate has with the Mill in terms of its financial contribution towards milling revenues is also highlighted as a strategic benefit. A summary of results is presented by answering the specific research questions. The case study concludes that the Heatonville Miller Cum Planter irrigation operation provides strategic cane supplies to the Felixton Mill, which if outsourced to third parties may be at risk. The case study makes no attempt to generalise findings to other cane growing irrigation schemes. However where similar situations prevail management decisions could well be guided by the findings of this study, given the systematic application of the budget models in each situation. / Thesis (MBA)-University of Natal, Durban, 2003.

No abstract available. / Thesis (M.Sc.)-University of Durban-Westville, 1989.

No description available.

The cholesterol-lowering efficacy of the original sugarcane-derived Cuban policosanol (OPC) supplement has been attributed to an exclusive policosanol purity and composition. The first objective of the following study was to compare the purity and composition of the OPC and alternative sugarcane derived policosanol (APC) products. Second, to measure blood lipids and policosanol levels in tissues, plasma and feces in hamsters receiving diet fortified with no policosanols, OPC, or an APC (APC1) product. Results indicated that the policosanol purity and composition of the OPC and APC formulations are similar. Lipid levels were not significantly different between groups. Policosanols were undetectable in the plasma and tissues of any animals following policosanol supplementation. Policosanols were excreted at a higher rate in animals consuming APC1. Sugarcane-derived policosanols are not an efficacious cholesterol-lowering therapy. The purity and relative percent composition of the OPC supplement cannot account for its efficacy as a lipid lowering agent.

Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1972. / Bibliography: leaves [160]-168. / xii, 168 l illus. tables

Typescript. Bibliography: leaves 75-80

Transgenic lines of sugarcane with increased total sugar content have been obtained in previous work in our lab, through the introduction of a sucrose isomerase (SI) gene designed vacuole-targeting of the SI gene product. Some of the resulting transgenic lines accumulate the high value sugar isomaltulose (IM) without decrease in stored sucrose content. Other lines show enhanced sucrose content with low levels of IM in mature storage tissues. Under containment glasshouse conditions, these “SugarBooster™” lines have shown up to two-fold increase in the total sugar concentration in the harvested juice. This remarkable step above the former ceiling in stored sugar concentration may permit new insights into the mechanisms by which plants regulate sugar accumulation, a pivotal question in plant biology. Studies conducted in this thesis are a part of the effort to understand the underlying mechanisms. Experiments were focused on the regulation of SI and endogenous genes related to sucrose metabolism, as revealed by transcript levels. Enzyme activity was also tested for sucrose phosphate synthase (SPS), a key enzyme in plant sucrose biosynthesis. Initially, the relationship between IM content and SI transcript level was analyzed. Real-time quantitative polymerase chain reaction (RT-qPCR) successfully detected SI gene transcripts in internodes of different maturities in SugarBooster™ lines, but no correlation was found between the transcript level and IM content. In contrast, northern blotting to distinguish full-length SI mRNA from degraded transcripts revealed a positive relationship between IM content and functional transcripts of SI. The results imply that stabilization of SI mRNA is important for high IM content but that high sucrose accumulation accompanied by low IM involves other mechanisms. Therefore, transcript levels of several key genes in sucrose metabolism were analyzed in internodes at various developmental stages in SugarBooster™ iv and control lines. These genes encode sucrose phosphate synthase (SPS), sucrose synthase (SuSy), soluble acid invertase (SAI), neutral invertase (NI), cell wall invertase (CWI), a putative sugar transporter type 2a (Type2a) and sucrose transporter type 6 (Type6). Sucrose content was negatively correlated to the transcript levels of SAI, but there were no significant correlations between sugar content and mRNA levels of other tested enzymes across all developmental stages. However, interesting transcript patterns that might contribute to high sucrose accumulation were observed in some lines. Examples from different lines include: SuSy transcripts increased in immature internodes but decreased in mature ones; NI expression decreased in mature internodes and sugar transporters increased in some cases. Further analysis was undertaken on transcript regulation of five SPS families, as SPS is the rate-limiting enzyme for sucrose biosynthesis in some plant systems. As recently reported from a CSIRO analysis of sugarcane progeny segregating for sucrose content, transcripts of SPS family 2 predominated in the stem for both SugarBooster™ and control lines. Transcripts of SPS families 3 and 4 were less abundant and families 1 and 5 were rare. More abundant mRNAs of SPS families 2, 3 and 4 indicate that they play an important role in sucrose accumulation in the stem. However, none of the mRNA levels of the five families had a significant correlation to the SPS enzyme activity or to the sucrose content measured in corresponding tissues. In contrast, SPS enzyme activity was found positively correlated to sucrose content. It revealed that regulation of SPS in sugarcane is mainly at the level of enzyme activity. These studies have been constrained by the availability of experimental material in early vegetative generations of SugarBooster™ lines under containment glasshouse conditions. As the opportunity emerges for more material from approved field trials, it will be important to identify the most stable lines under field conditions, for further studies on metabolites, carbon partitioning and enzyme activity to fill the gap in understanding between regulation at transcript level and the SugarBooster™ phenotypes.

Dissertation (PhD)--University of Stellenbosch, 2006. / Bibliography. Also available via the Internet.

Thesis (M.A.)--York University, 2005. Graduate Programme in Geography. / Typescript. Includes bibliographical references (leaves 135-138). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url_ver=Z39.88-2004 & res_dat=xri:pqdiss & rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation & rft_dat=xri:pqdiss:MR11809.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1983. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 76-84).