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Showing 1 to 20 of 59 for “"Waxy"”.
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Electrical treatment of waxy model oil to improve its cold mobility
… challenges during offshore transportation of waxy crude oils. The sharp increase of viscosity due to wax precipitation increases the pressure drop and thus raises the capital and operating cost of transportation. Conventional methods of lowering the viscosity of waxy oils include adding …
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The rheological complexity of waxy crude oils : yielding, thixotropy and shear heterogeneities
… complexities associated with the rheology of waxy crude oils. These complex phenomena are often difficult to both quantify experimentally and capture with existing constitutive models. The contribution of this thesis is therefore to develop a detailed understanding of three of these particular …
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Characterisation of waxy gas-condensates by high temperature capillary gas chromatography and oxidative degradation
… geosphere. For example, the phase behaviour of waxy gas condensates is significantly affected by the varying proportions of HMW compounds. Similarly HMW compounds are amongst the most resistant petroleum components to biodegradation. The current study reports the development of reproducible …
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Investigation of the phase transitions of pregelatinized waxy maize starch at low moisture contents
… in the corresponding food system. Pregelatinized waxy maize starch was studied by MDSC as a function of moisture content and storage temperature. A sub-Tg endotherm was observed between 45-65°C in the non-reversing signal for pregelatinized waxy maize starch stored between 0 and 72% RH and over a …
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Preparation and structure of Octenyl succinic anhydride modified waxy maize starch, microporous starch and maltodextrin
… to investigate the reaction of OSA with granular waxy maize (WM) starch, microporous WM starch and soluble maltodextrin. OS starches were prepared in an aqueous slurry system, and the degree of substitution (DS) of OS starches was determined by titration and [superscript]1H-NMR spectroscopy. For …
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Cloning and characterisation of the waxy genes of wheat and investigation of their potential applications
… Amylose is synthesized by the waxy protein, a predominant enzyme in the endosperm, the granule-bound starch synthase (GBSSI). A great number of efforts are being made worldwide to produce the waxy wheat with amylose-free starch by breeding programs or biotechnological …
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Prolaminas, proteínas waxy y puroindolinas en trigo blando : herencia, influencia e interacción en la calidad
… genetico y funcional de las lineas parcial waxy, de la textura del grano y de las prolaminas. Y determinar la influencia de las subunidades de gluteninas de alto (HMW) y bajo peso molecular (LMW), las gliadinas, las secalinas, la sobreexpresion de la subunidad de gluteninas HMW Bx7, las …
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Impact of Low-Amylose, Waxy Wheat (Triticum Aestivum L.) Flour Blends on Functional Tortilla Characteristics
… is not well understood. However, the breeding of waxy wheat lines having low levels of amylose starch has provided new possibilities to characterize the impact of starch on end-use food quality and functionality. The unique rheological characteristics of waxy wheat may improve food texture and …
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Assessing bioactivity of peptide QUB2003 from the skin secretion of the Waxy monkey tree frog Phyllomedusa sauvagii
Frog skin acts as a first line barrier of defence in amphibians, is important in their daily lives and is having significant implications in current biomedical science research. According to this research, amphibian skin secretion is a rich source of bioactive materials, including antimicrobial …
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An Experimental Study on the Effects of Heat and Chemical Inhibitors on the Flow Behaviour of Waxy Crude Oils. The Effects of Heat and Chemical Inhibitors on the Rheological Properties of Waxy Crude Oils with regard to Pumping in Pipelines
Waxy crude oils (1/3 of oil produced worldwide), pumping through pipelines considered risky operation due to the crude wax content (15-40 wt.%) and to the temperature at which wax supersaturates and precipitates, leading to the danger of pipe blockage, eventually resulting, in multimillion dollars …
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Marker assisted selection and breeding for desirable thinner pericarp thickness and ear traits in fresh market waxy corn germplasm
… traits are important selection criteria in fresh waxy corn breeding programs as they are associated with consumer sensory and visual preferences. An F2:3 mapping population from the cross between South Korean inbreds BH20 and BH30 was developed in order to estimate genetic relationships among …
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Phylogenetic Relationships within Coleeae (Bignoniaceae Juss.)
… such as PCR by using universal primers for waxy nuclear gene, agarose electrophoresis, cloning and sequencing were performed. A total of 26 taxa were successfully amplified. Sequences were analyzed using three different phylogenetic programs (Maximum parsimony, maximum likelihood and …
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Nuclear magnetic relaxation studies of the hydration properties of potato starch and beef heart surimi analogs in relation to functionality in foods
… magnetic resonance (NMR) techniques. Several waxy and mealy potato cultivars were selected for these studies: LaSoda and Pontiac (waxy) and Russet Burbank and Norchip (mealy). Potato starch was employed as model systems for novel food formulations such as beef heart surimi (BHS) analogs, …
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Functional properties of banana starch
… Brabender Amylograph) of banana, corn, tapioca, waxy maize and cross-bonded waxy maize starches. Banana starch has functional properties generally similar to cross-bonded waxy maize, except that banana starch pastes tend to cook more slowly and are much less resistant to breakdown under acid …
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Structure-property relationships of novel cellulose esters
Cellulose “waxy” (long-chain aliphatic) tri-esters of lauric (C₁₂), myristic (C₁₄), stearic (C₁₈), and eicosanoic (C₂₀) acids; mixed esters of lauric and acetic acids; and fluorinated mixed esters of 2,2,2-trifluoroethoxyacetic (TFEA) and acetic acids were synthesized in homogeneous DMAc/LiCl …
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Rheometry and direct flow observations of a model wax-oil system
Waxy crude oils are a commonly encountered type of crude oil which must be dealt with by oil production companies. They are characterized by a gel-like behavior at temperatures below their wax appearance temperature (Twa) and often exhibit a yield stress. The restart of pipelines containing gelled …
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The Development of a Knowledge-Based Wax Deposition, Three Yield Stresses Model and Failure Mechanisms for Re-starting Petroleum Field Pipelines. Building on Chang and Boger’s Yield Stresses Model, Bidmus and Mehrotra’s Wax Deposition and Lee et al.’s Adhesive-Cohesive Failure Concepts to better Underpin Restart Operation of Waxy Crude Oil Pipelines
… and elastic limits) to describe yielding of waxy crude oils cooled below the wax appearance temperature (WAT). At the time, the limits in rheological instruments were such that they never actually measured the elastic-limit, a key fundamental property. Using modern instruments, this research …
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Characteristics of heat transfer fouling of thin stillage using model thin stillage and evaporator concentrates
… were performed with two varieties of starch, waxy and high amylose and short chain carbohydrates, corn syrup solids and glucose. Interaction effects of glucose with starch varieties were studied. In the first experiment, short chain carbohydrates individual and interaction effects with starch …
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Enhanced β-galctosidase activity in probiotics for improved bioconversion of soy isoflavones in dairy and soy-based yoghurt
… i.e. galactooligosaccharides (GOS), modified waxy maize starch (MWMS), inulin and β-glucan on the growth of selected organisms and on the physical attributes of yogurt and sogurt. The study also investigated the role of β-gal produced by LB and BB12 in biotransformation of isoflavone …
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