Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 38 for “"xylitol"”.
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Xylitol metabolism and oxalate synthesis in the rat
vi, 90 leaves : tables, graphs ; 30 cm.
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Xylitol Production From D-Xylose by Facultative Anaerobic Bacteria
… were screened for the production of xylitol; a sugar alcohol used as a sweetener in the pharmaceutical and food industries. A chromogenic assay of both solid and liquid cultures showed that 10 of the 17 species screened could grow on D-xylose and produce detectable quantities of …
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Naturopathic Physicians’ Attitudes, Knowledge, and Practices Regarding Xylitol in Clinical Practice
… attitudes, and practices regarding the use of xylitol clinical practice. Methods: This study utilized a convenience sample of naturopathic physicians (NPs) (N=325) through an online survey via SurveyMonkey®. Results: The majority of NPs were knowledgeable of the medical and dental uses of …
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Recovery of Xylitol from Fermentation of Model Hemicellulose Hydrolysates Using Membrane Technology
Xylitol can be produced from xylose or hemicellulose hydrolysates by either chemical reduction or microbial fermentation. Current technology for commercial production is based on chemical reduction of xylose or hemicellulose, and xylitol is separated and purified by chromatographic methods. The …
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Optimizing xylitol production: a molecular and experimental study of xylose reductase in Candida tropicalis
Xylitol, a naturally occurring sugar alcohol, is widely used in the food and pharmaceutical industries as both an artificial sweetener and an anticariogenic agent. Traditional xylitol production relies on harsh chemicals and energy-intensive processes, making microbial fermentation a more …
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Engineering robust yeast strains for the conversion of xylose derived from lignocellulosic biomass to xylitol
… of the low-calorie sugar substitute, xylitol which has a well-established market, as well as other chemicals. The construction of a xylitolproducing S. cerevisiae strain represents an economically feasible and environmentally friendly approach to xylitol production. Moreover, the …
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Engineering a Fungal L-Arabinose Pathway Towards the Co-Utilization of Hemicellulosic Sugars for Production of Xylitol
… of such high levels of desired product. Xylitol is an attractive pentose sugar alcohol that has many applications in the food, pharmaceutical, and high-value based biochemical product industries. It is still, however, relatively expensive to produce, which prevents its economical …
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Engineering a Fungal L-Arabinose Pathway Towards the Co-Utilization of Hemicellulosic Sugars for Production of Xylitol
… of such high levels of desired product. Xylitol is an attractive pentose sugar alcohol that has many applications in the food, pharmaceutical, and high-value based biochemical product industries. It is still, however, relatively expensive to produce, which prevents its economical …
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Raman spectroscopy for the microbiological characterization and identification of medically relevant bacteria
… of the cells. </p> <p>The five-carbon sugar xylitol, which cannot be metabolized by the oral and nasopharyngeal bacteria, had been recognized by clinicians as a preventive agents for dental caries and many studies have demonstrated that xylitol causes a reduction in otitis media (chronic …
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Manufacture of Low Fat Process Cheese with Improved Functional Properties and Manufacture of Full Fat, Reduced Fat and Low Fat Process Cheese with 50% Reduced Sodium
… fat PC with improved functional properties using xylitol as a fat replacer. Three different low fat PC formulations were prepared with 0, 2, and 4% xylitol. All three PC formulations were formulated to contain 5% fat. Each treatment was manufactured in triplicate. Rheological characteristics …
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Investigating the loss of crystal structure in carbohydrate materials
… (erythitol, maltitol, mannitol, sorbitol and xylitol) exhibited little to no change in Tm onset regardless of heating rate and were classified in the no/low heating rate dependency group. The eleven compounds (D and L arabinose, fructose, glucose anhydrous, glucose monohydrate, lactose …
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Stanovení obsahu náhradních sladidel ve žvýkačkách
… acesulfam K, mannitol, maltitol, sukralóza a xylitol) a optimalizaci složení mobilní fáze. Bylo zjištěno, že není možné jednou univerzální metodou stanovit všechny náhradní sladidla, nicméně s využitím kolony Agilent Hi-Plex Ca (300 x 7,7 mm) a mobilní fáze acetonitril:voda v poměru 7:93 %v/v …
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Improved xylose fermentation by expression of a putative xylose transporter encoding gene HXT2.4 in Saccharomyces cerevisiae
… into the yeast cell, intracellular xylose and xylitol concentrations were measured using 100% methanol quenching and extraction. The results showed that the HXT2.4 expressing S. cerevisiae could accumulate 10% more xylose and 40% more xylitol than the control strain. Sugar uptake kinetic …
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Using Statistical Techniques and Machine Learning to Assess Potential Biomarkers and Clinical Characteristics for Differences between Chronic Hepatitis C Virus and Hepatocellular Carcinoma
… Proline, Octadecanedioate, Pantoprazole, and Xylitol. Logistic Regression identified 3-hydroxypropanoate, Laurylcarnitine, N4-acetylcytidine, N6-acetyllysine, Octadecanedioate, Oleoylcarnitine, Pantoprazole, and Xylitol.
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Optimal yeast strains for the production of fuels and chemicals from lignocellulosic biomass
… pathway consisting of xylose reductase (XR), xylitol dehydrogenase (XDH), and xylulose kinase (XK), coded by XYL1, XYL2, and XYL3, respectively. Finding XYL2 as an overexpression target, I optimized the expression levels of XYL1/XYL2/XYL3 to maximize the ethanol yield with a minimum xylitol …
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Understanding, Optimization, and Application of Phosphite Dehydrogenase: Advancing NAD(P)H Regeneration
… industrially interesting compounds such as xylitol and L- tert-leucine. The results obtained show that the combined mutant PTDH enzymes allow high productivity and conversion, representing one of the best NAD(P)H regeneration methods currently available.
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Studies of the effects of various lithogenic and antilithogenic dietry supplements on calcium oxalate kidney stone risk factors in South African black and white subjects
… selected for study were glucose, sorbitol and xylitol, while the oxalatecontaining agents were rhubarb, spinach and an aqueous solution of sodium oxalate itself. Finally, taurine, which has been shown to reduce urinary glycolate and oxalate in animal models, was also selected for investigation …
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Design and development of drug delivery systems for immediate and sustained release utilizing hot melt extrusion
… The sugar alcohols (Mannitol, Sorbitol, and Xylitol) investigated in this study proved to be very effective in forming solid dispersions and enhancing solubility of CBZ form III. Xylitol exhibited good processability. Chlorpheniramine Maleate (CLPM) and Diltiazem Hydrochloride (DTZ) were used …
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Synergy of protein and genome engineering for fuels and chemicals production
… for the production of the sugar substitute, xylitol, from a mixture of hemicellulosic hydrolysate sugars. First, a xylose-specific xylose reductase enzyme was engineered for higher substrate specificity. However, after significant loss in enzymatic activity, genome engineering was targeted as …
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